a ``noexcept`` function should transitively unwind to a terminateblock. Throw
specifications are not implemented by MSVC, and are not yet supported.
-Each of these new EH pad instructions has a label operand that indicates which
+Each of these new EH pad instructions has a way to identify which
action should be considered after this action. The ``catchpad`` and
-``terminatepad`` instructions are terminators, and this label is considered to
-be an unwind destination analogous to the unwind destination of an invoke. The
+``terminatepad`` instructions are terminators, and have a label operand considered
+to be an unwind destination analogous to the unwind destination of an invoke. The
``cleanuppad`` instruction is different from the other two in that it is not a
-terminator, and this label operand is not an edge in the CFG. The code inside a
-cleanuppad runs before transferring control to the next action, so the
-``cleanupret`` instruction is the instruction that unwinds to the next EH pad.
-All of these "unwind edges" may refer to a basic block that contains an EH pad
-instruction, or they may simply unwind to the caller. Unwinding to the caller
-has roughly the same semantics as the ``resume`` instruction in the
-``landingpad`` model. When inlining through an invoke, instructions that unwind
-to the caller are hooked up to unwind to the unwind destination of the call
-site.
+terminator. The code inside a cleanuppad runs before transferring control to the
+next action, so the ``cleanupret`` instruction is the instruction that holds a
+label operand and unwinds to the next EH pad. All of these "unwind edges" may
+refer to a basic block that contains an EH pad instruction, or they may simply
+unwind to the caller. Unwinding to the caller has roughly the same semantics as
+the ``resume`` instruction in the ``landingpad`` model. When inlining through an
+invoke, instructions that unwind to the caller are hooked up to unwind to the
+unwind destination of the call site.
Putting things together, here is a hypothetical lowering of some C++ that uses
all of the new IR instructions:
; EH scope code, ordered innermost to outermost:
lpad.cleanup: ; preds = %invoke.cont
- cleanuppad [label %lpad.catch]
+ %cleanup = cleanuppad []
call void @"\01??_DCleanup@@QEAA@XZ"(%struct.Cleanup* nonnull %obj) nounwind
- cleanupret unwind label %lpad.catch
+ cleanupret %cleanup unwind label %lpad.catch
lpad.catch: ; preds = %entry, %lpad.cleanup
- catchpad void [%rtti.TypeDescriptor2* @"\01??_R0H@8", i32 0, i32* %e]
+ %catch = catchpad [%rtti.TypeDescriptor2* @"\01??_R0H@8", i32 0, i32* %e]
to label %catch unwind label %lpad.terminate
catch: ; preds = %lpad.catch
%9 = load i32, i32* %e, align 4
- catchret label %return
+ catchret %catch label %return
lpad.terminate:
terminatepad [void ()* @"\01?terminate@@YAXXZ"]
::
- <resultval> = catchpad
<resultty> [<args>*]
+ <resultval> = catchpad [<args>*]
to label <normal label> unwind label <exception label>
Overview:
exception. Control is tranfered to the ``exception`` label if the
``catchpad`` is not an appropriate handler for the in-flight exception.
The ``normal`` label should contain the code found in the ``catch``
-portion of a ``try``/``catch`` sequence. It defines values supplied by
-the :ref:`personality function <personalityfn>` upon re-entry to the
-function. The ``resultval`` has the type ``resultty``.
+portion of a ``try``/``catch`` sequence. The ``resultval`` has the type
+:ref:`token <t_token>` and is used to match the ``catchpad`` to
+corresponding :ref:`catchrets <i_catchret>`.
Arguments:
""""""""""
Semantics:
""""""""""
-The '``catchpad``' instruction defines the values which are set by the
-:ref:`personality function <personalityfn>` upon re-entry to the function, and
-therefore the "result type" of the ``catchpad`` instruction. As with
-calling conventions, how the personality function results are
-represented in LLVM IR is target specific.
-
When the call stack is being unwound due to an exception being thrown,
the exception is compared against the ``args``. If it doesn't match,
then control is transfered to the ``exception`` basic block.
+As with calling conventions, how the personality function results are
+represented in LLVM IR is target specific.
The ``catchpad`` instruction has several restrictions:
catch block.
- A basic block that is not a catch block may not include a
'``catchpad``' instruction.
+- A catch block which has another catch block as a predecessor may not have
+ any other predecessors.
- It is undefined behavior for control to transfer from a ``catchpad`` to a
- ``cleanupret`` without first executing a ``catchret`` and a subsequent
- ``cleanuppad``.
-- It is undefined behavior for control to transfer from a ``catchpad`` to a
- ``ret`` without first executing a ``catchret``.
+ ``ret`` without first executing a ``catchret`` that consumes the
+ ``catchpad`` or unwinding through its ``catchendpad``.
+- It is undefined behavior for control to transfer from a ``catchpad`` to
+ itself without first executing a ``catchret`` that consumes the
+ ``catchpad`` or unwinding through its ``catchendpad``.
Example:
""""""""
.. code-block:: llvm
;; A catch block which can catch an integer.
- %res = catchpad { i8*, i32 } [i8** @_ZTIi]
+ %tok = catchpad [i8** @_ZTIi]
to label %int.handler unwind label %terminate
.. _i_catchendpad:
'``catchendpad``' instruction.
- Exactly one catch block may unwind to a ``catchendpad``.
- The unwind target of invokes between a ``catchpad`` and a
- corresponding ``catchret`` must be its ``catchendpad``.
+ corresponding ``catchret`` must be its ``catchendpad`` or
+ an inner EH pad.
Example:
""""""""
::
- catchret <type> <value> to label <normal>
+ catchret <value> to label <normal>
Overview:
"""""""""
Arguments:
""""""""""
-The '``catchret``' instruction requires one argument which specifies
-where control will transfer to next.
+The first argument to a '``catchret``' indicates which ``catchpad`` it
+exits. It must be a :ref:`catchpad <i_catchpad>`.
+The second argument to a '``catchret``' specifies where control will
+transfer to next.
Semantics:
""""""""""
arbitrary code to, for example, run a C++ destructor.
Control then transfers to ``normal``.
It may be passed an optional, personality specific, value.
+It is undefined behavior to execute a ``catchret`` whose ``catchpad`` has
+not been executed.
+It is undefined behavior to execute a ``catchret`` if any ``catchpad`` or
+``cleanuppad`` has been executed, without subsequently executing a
+corresponding ``catchret``/``cleanupret`` or unwinding out of the inner
+pad, following the most recent execution of the ``catchret``'s corresponding
+``catchpad``.
+
Example:
""""""""
.. code-block:: llvm
- catchret label %continue
+ catchret %catch label %continue
.. _i_cleanupret:
::
- cleanupret <type> <value> unwind label <continue>
- cleanupret <type> <value> unwind to caller
+ cleanupret <value> unwind label <continue>
+ cleanupret <value> unwind to caller
Overview:
"""""""""
Arguments:
""""""""""
-The '``cleanupret``' instruction requires one argument, which must have the
-same type as the result of any '``cleanuppad``' instruction in the same
-function. It also has an optional successor, ``continue``.
+The '``cleanupret``' instruction requires one argument, which indicates
+which ``cleanuppad`` it exits, and must be a :ref:`cleanuppad <i_cleanuppad>`.
+It also has an optional successor, ``continue``.
Semantics:
""""""""""
:ref:`personality function <personalityfn>` that one
:ref:`cleanuppad <i_cleanuppad>` it transferred control to has ended.
It transfers control to ``continue`` or unwinds out of the function.
+It is undefined behavior to execute a ``cleanupret`` whose ``cleanuppad`` has
+not been executed.
+It is undefined behavior to execute a ``cleanupret`` if any ``catchpad`` or
+``cleanuppad`` has been executed, without subsequently executing a
+corresponding ``catchret``/``cleanupret`` or unwinding out of the inner pad,
+following the most recent execution of the ``cleanupret``'s corresponding
+``cleanuppad``.
Example:
""""""""
.. code-block:: llvm
- cleanupret void unwind to caller
- cleanupret { i8*, i32 } %exn unwind label %continue
+ cleanupret %cleanup unwind to caller
+ cleanupret %cleanup unwind label %continue
.. _i_terminatepad:
::
- <resultval> = cleanuppad
<resultty> [<args>*]
+ <resultval> = cleanuppad [<args>*]
Overview:
"""""""""
The ``args`` correspond to whatever additional
information the :ref:`personality function <personalityfn>` requires to
execute the cleanup.
-The ``resultval`` has the type ``resultty``.
+The ``resultval`` has the type :ref:`token <t_token>` and is used to
+match the ``cleanuppad`` to corresponding :ref:`cleanuprets <i_cleanupret>`.
Arguments:
""""""""""
""""""""""
The '``cleanuppad``' instruction defines the values which are set by the
-:ref:`personality function <personalityfn>` upon re-entry to the function, and
-therefore the "result type" of the ``cleanuppad`` instruction. As with
-calling conventions, how the personality function results are
+:ref:`personality function <personalityfn>` upon re-entry to the function.
+As with calling conventions, how the personality function results are
represented in LLVM IR is target specific.
When the call stack is being unwound due to an exception being thrown,
cleanup block.
- A basic block that is not a cleanup block may not include a
'``cleanuppad``' instruction.
+- All ``cleanupret``s which exit a cleanuppad must have the same
+ exceptional successor.
- It is undefined behavior for control to transfer from a ``cleanuppad`` to a
- ``catchret`` without first executing a ``cleanupret`` and a subsequent
- ``catchpad``.
-- It is undefined behavior for control to transfer from a ``cleanuppad`` to a
- ``ret`` without first executing a ``cleanupret``.
+ ``ret`` without first executing a ``cleanupret`` that consumes the
+ ``cleanuppad`` or unwinding out of the ``cleanuppad``.
+- It is undefined behavior for control to transfer from a ``cleanuppad`` to
+ itself without first executing a ``cleanupret`` that consumes the
+ ``cleanuppad`` or unwinding out of the ``cleanuppad``.
Example:
""""""""
.. code-block:: llvm
- %res = cleanuppad { i8*, i32 } [label %nextaction]
+ %tok = cleanuppad []
.. _intrinsics:
FUNC_CODE_INST_CMPXCHG = 46, // CMPXCHG: [ptrty,ptr,valty,cmp,new, align,
// vol,ordering,synchscope]
FUNC_CODE_INST_LANDINGPAD = 47, // LANDINGPAD: [ty,val,num,id0,val0...]
- FUNC_CODE_INST_CLEANUPRET = 48, // CLEANUPRET: [] or [val] or [bb#] or [val,bb#]
- FUNC_CODE_INST_CATCHRET = 49, // CATCHRET: [bb#]
- FUNC_CODE_INST_CATCHPAD = 50, // CATCHPAD: [ty,val,val,num,args...]
+ FUNC_CODE_INST_CLEANUPRET = 48, // CLEANUPRET: [val] or [val,bb#]
+ FUNC_CODE_INST_CATCHRET = 49, // CATCHRET: [val,bb#]
+ FUNC_CODE_INST_CATCHPAD = 50, // CATCHPAD: [bb#,bb#,num,args...]
FUNC_CODE_INST_TERMINATEPAD = 51, // TERMINATEPAD: [bb#,num,args...]
FUNC_CODE_INST_CLEANUPPAD = 52, // CLEANUPPAD: [num,args...]
FUNC_CODE_INST_CATCHENDPAD = 53, // CATCHENDPAD: [] or [bb#]
return Insert(ResumeInst::Create(Exn));
}
- CleanupReturnInst *CreateCleanupRet(BasicBlock *UnwindBB = nullptr,
- Value *RetVal = nullptr) {
- return Insert(CleanupReturnInst::Create(Context, RetVal, UnwindBB));
+ CleanupReturnInst *CreateCleanupRet(CleanupPadInst *CleanupPad,
+ BasicBlock *UnwindBB = nullptr) {
+ return Insert(CleanupReturnInst::Create(CleanupPad, UnwindBB));
}
- CatchPadInst *CreateCatchPad(Type *Ty, BasicBlock *NormalDest,
- BasicBlock *UnwindDest, ArrayRef<Value *> Args,
- const Twine &Name = "") {
- return Insert(CatchPadInst::Create(Ty, NormalDest, UnwindDest, Args), Name);
+ CatchPadInst *CreateCatchPad(BasicBlock *NormalDest, BasicBlock *UnwindDest,
+ ArrayRef<Value *> Args, const Twine &Name = "") {
+ return Insert(CatchPadInst::Create(NormalDest, UnwindDest, Args), Name);
}
CatchEndPadInst *CreateCatchEndPad(BasicBlock *UnwindBB = nullptr) {
return Insert(TerminatePadInst::Create(Context, UnwindBB, Args), Name);
}
- CleanupPadInst *CreateCleanupPad(Type *Ty, ArrayRef<Value *> Args,
+ CleanupPadInst *CreateCleanupPad(ArrayRef<Value *> Args,
const Twine &Name = "") {
- return Insert(CleanupPadInst::Create(Ty, Args), Name);
+ return Insert(CleanupPadInst::Create(Context, Args), Name);
}
- CatchReturnInst *CreateCatchRet(BasicBlock *BB, Value *RetVal = nullptr) {
- return Insert(CatchReturnInst::Create(BB, RetVal));
+ CatchReturnInst *CreateCatchRet(CatchPadInst *CatchPad, BasicBlock *BB) {
+ return Insert(CatchReturnInst::Create(CatchPad, BB));
}
UnreachableInst *CreateUnreachable() {
void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
assert(idx < getNumSuccessors() && "Successor # out of range for Branch!");
- *(&Op<-1>() - idx) = (Value*)NewSucc;
+ *(&Op<-1>() - idx) = NewSucc;
}
/// \brief Swap the successors of this branch instruction.
}
void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
assert(idx < getNumSuccessors() && "Successor # out of range for switch!");
- setOperand(idx*2+1, (Value*)NewSucc);
+ setOperand(idx * 2 + 1, NewSucc);
}
// Methods for support type inquiry through isa, cast, and dyn_cast:
return cast<BasicBlock>(getOperand(i+1));
}
void setSuccessor(unsigned i, BasicBlock *NewSucc) {
- setOperand(i+1, (Value*)NewSucc);
+ setOperand(i + 1, NewSucc);
}
// Methods for support type inquiry through isa, cast, and dyn_cast:
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ResumeInst, Value)
-//===----------------------------------------------------------------------===//
-// CleanupReturnInst Class
-//===----------------------------------------------------------------------===//
-
-class CleanupReturnInst : public TerminatorInst {
- CleanupReturnInst(const CleanupReturnInst &RI);
-
-private:
- void init(Value *RetVal, BasicBlock *UnwindBB);
- CleanupReturnInst(LLVMContext &C, Value *RetVal, BasicBlock *UnwindBB,
- unsigned Values, Instruction *InsertBefore = nullptr);
- CleanupReturnInst(LLVMContext &C, Value *RetVal, BasicBlock *UnwindBB,
- unsigned Values, BasicBlock *InsertAtEnd);
-
- int getUnwindLabelOpIdx() const {
- assert(hasUnwindDest());
- return 0;
- }
-
- int getRetValOpIdx() const {
- assert(hasReturnValue());
- if (hasUnwindDest())
- return 1;
- return 0;
- }
-
-protected:
- // Note: Instruction needs to be a friend here to call cloneImpl.
- friend class Instruction;
- CleanupReturnInst *cloneImpl() const;
-
-public:
- static CleanupReturnInst *Create(LLVMContext &C,
- Value *RetVal = nullptr,
- BasicBlock *UnwindBB = nullptr,
- Instruction *InsertBefore = nullptr) {
- unsigned Values = 0;
- if (RetVal)
- ++Values;
- if (UnwindBB)
- ++Values;
- return new (Values)
- CleanupReturnInst(C, RetVal, UnwindBB, Values, InsertBefore);
- }
- static CleanupReturnInst *Create(LLVMContext &C, Value *RetVal,
- BasicBlock *UnwindBB,
- BasicBlock *InsertAtEnd) {
- unsigned Values = 0;
- if (RetVal)
- ++Values;
- if (UnwindBB)
- ++Values;
- return new (Values)
- CleanupReturnInst(C, RetVal, UnwindBB, Values, InsertAtEnd);
- }
-
- /// Provide fast operand accessors
- DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
-
- bool hasUnwindDest() const { return getSubclassDataFromInstruction() & 1; }
- bool unwindsToCaller() const { return !hasUnwindDest(); }
- bool hasReturnValue() const { return getSubclassDataFromInstruction() & 2; }
-
- /// Convenience accessor. Returns null if there is no return value.
- Value *getReturnValue() const {
- if (!hasReturnValue())
- return nullptr;
- return getOperand(getRetValOpIdx());
- }
- void setReturnValue(Value *RetVal) {
- assert(hasReturnValue());
- setOperand(getRetValOpIdx(), RetVal);
- }
-
- unsigned getNumSuccessors() const { return hasUnwindDest() ? 1 : 0; }
-
- BasicBlock *getUnwindDest() const;
- void setUnwindDest(BasicBlock *NewDest);
-
- // Methods for support type inquiry through isa, cast, and dyn_cast:
- static inline bool classof(const Instruction *I) {
- return (I->getOpcode() == Instruction::CleanupRet);
- }
- static inline bool classof(const Value *V) {
- return isa<Instruction>(V) && classof(cast<Instruction>(V));
- }
-
-private:
- BasicBlock *getSuccessorV(unsigned Idx) const override;
- unsigned getNumSuccessorsV() const override;
- void setSuccessorV(unsigned Idx, BasicBlock *B) override;
-
- // Shadow Instruction::setInstructionSubclassData with a private forwarding
- // method so that subclasses cannot accidentally use it.
- void setInstructionSubclassData(unsigned short D) {
- Instruction::setInstructionSubclassData(D);
- }
-};
-
-template <>
-struct OperandTraits<CleanupReturnInst>
- : public VariadicOperandTraits<CleanupReturnInst> {};
-
-DEFINE_TRANSPARENT_OPERAND_ACCESSORS(CleanupReturnInst, Value)
-
//===----------------------------------------------------------------------===//
// CatchEndPadInst Class
//===----------------------------------------------------------------------===//
CatchPadInst(const CatchPadInst &CPI);
- explicit CatchPadInst(Type *RetTy, BasicBlock *IfNormal,
- BasicBlock *IfException, ArrayRef<Value *> Args,
- unsigned Values, const Twine &NameStr,
- Instruction *InsertBefore);
- explicit CatchPadInst(Type *RetTy, BasicBlock *IfNormal,
- BasicBlock *IfException, ArrayRef<Value *> Args,
- unsigned Values, const Twine &NameStr,
- BasicBlock *InsertAtEnd);
+ explicit CatchPadInst(BasicBlock *IfNormal, BasicBlock *IfException,
+ ArrayRef<Value *> Args, unsigned Values,
+ const Twine &NameStr, Instruction *InsertBefore);
+ explicit CatchPadInst(BasicBlock *IfNormal, BasicBlock *IfException,
+ ArrayRef<Value *> Args, unsigned Values,
+ const Twine &NameStr, BasicBlock *InsertAtEnd);
protected:
// Note: Instruction needs to be a friend here to call cloneImpl.
CatchPadInst *cloneImpl() const;
public:
- static CatchPadInst *Create(Type *RetTy, BasicBlock *IfNormal,
- BasicBlock *IfException, ArrayRef<Value *> Args,
- const Twine &NameStr = "",
+ static CatchPadInst *Create(BasicBlock *IfNormal, BasicBlock *IfException,
+ ArrayRef<Value *> Args, const Twine &NameStr = "",
Instruction *InsertBefore = nullptr) {
unsigned Values = unsigned(Args.size()) + 2;
- return new (Values) CatchPadInst(RetTy, IfNormal, IfException, Args, Values,
+ return new (Values) CatchPadInst(IfNormal, IfException, Args, Values,
NameStr, InsertBefore);
}
- static CatchPadInst *Create(Type *RetTy, BasicBlock *IfNormal,
- BasicBlock *IfException, ArrayRef<Value *> Args,
- const Twine &NameStr, BasicBlock *InsertAtEnd) {
+ static CatchPadInst *Create(BasicBlock *IfNormal, BasicBlock *IfException,
+ ArrayRef<Value *> Args, const Twine &NameStr,
+ BasicBlock *InsertAtEnd) {
unsigned Values = unsigned(Args.size()) + 2;
- return new (Values) CatchPadInst(RetTy, IfNormal, IfException, Args, Values,
- NameStr, InsertAtEnd);
+ return new (Values)
+ CatchPadInst(IfNormal, IfException, Args, Values, NameStr, InsertAtEnd);
}
/// Provide fast operand accessors
// get*Dest - Return the destination basic blocks...
BasicBlock *getNormalDest() const { return cast<BasicBlock>(Op<-2>()); }
BasicBlock *getUnwindDest() const { return cast<BasicBlock>(Op<-1>()); }
- void setNormalDest(BasicBlock *B) { Op<-2>() = reinterpret_cast<Value *>(B); }
- void setUnwindDest(BasicBlock *B) { Op<-1>() = reinterpret_cast<Value *>(B); }
+ void setNormalDest(BasicBlock *B) { Op<-2>() = B; }
+ void setUnwindDest(BasicBlock *B) { Op<-1>() = B; }
BasicBlock *getSuccessor(unsigned i) const {
assert(i < 2 && "Successor # out of range for catchpad!");
void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
assert(idx < 2 && "Successor # out of range for catchpad!");
- *(&Op<-2>() + idx) = reinterpret_cast<Value *>(NewSucc);
+ *(&Op<-2>() + idx) = NewSucc;
}
unsigned getNumSuccessors() const { return 2; }
}
void setUnwindDest(BasicBlock *B) {
assert(B && hasUnwindDest());
- Op<-1>() = reinterpret_cast<Value *>(B);
+ Op<-1>() = B;
}
unsigned getNumSuccessors() const { return hasUnwindDest() ? 1 : 0; }
CleanupPadInst(const CleanupPadInst &CPI);
- explicit CleanupPadInst(Type *RetTy, ArrayRef<Value *> Args,
+ explicit CleanupPadInst(LLVMContext &C, ArrayRef<Value *> Args,
const Twine &NameStr, Instruction *InsertBefore);
- explicit CleanupPadInst(Type *RetTy, ArrayRef<Value *> Args,
+ explicit CleanupPadInst(LLVMContext &C, ArrayRef<Value *> Args,
const Twine &NameStr, BasicBlock *InsertAtEnd);
protected:
CleanupPadInst *cloneImpl() const;
public:
- static CleanupPadInst *Create(Type *RetTy, ArrayRef<Value *> Args,
+ static CleanupPadInst *Create(LLVMContext &C, ArrayRef<Value *> Args,
const Twine &NameStr = "",
Instruction *InsertBefore = nullptr) {
- return new (Args.size()) CleanupPadInst(RetTy, Args, NameStr, InsertBefore);
+ return new (Args.size()) CleanupPadInst(C, Args, NameStr, InsertBefore);
}
- static CleanupPadInst *Create(Type *RetTy, ArrayRef<Value *> Args,
+ static CleanupPadInst *Create(LLVMContext &C, ArrayRef<Value *> Args,
const Twine &NameStr, BasicBlock *InsertAtEnd) {
- return new (Args.size()) CleanupPadInst(RetTy, Args, NameStr, InsertAtEnd);
+ return new (Args.size()) CleanupPadInst(C, Args, NameStr, InsertAtEnd);
}
/// Provide fast operand accessors
CatchReturnInst(const CatchReturnInst &RI);
private:
- void init(BasicBlock *BB, Value *RetVal);
- CatchReturnInst(BasicBlock *BB, Value *RetVal, unsigned Values,
+ void init(CatchPadInst *CatchPad, BasicBlock *BB);
+ CatchReturnInst(CatchPadInst *CatchPad, BasicBlock *BB,
Instruction *InsertBefore = nullptr);
- CatchReturnInst(BasicBlock *BB, Value *RetVal, unsigned Values,
+ CatchReturnInst(CatchPadInst *CatchPad, BasicBlock *BB,
BasicBlock *InsertAtEnd);
protected:
CatchReturnInst *cloneImpl() const;
public:
- static CatchReturnInst *Create(BasicBlock *BB, Value *RetVal = nullptr,
+ static CatchReturnInst *Create(CatchPadInst *CatchPad, BasicBlock *BB,
Instruction *InsertBefore = nullptr) {
+ assert(CatchPad);
assert(BB);
- unsigned Values = 1;
- if (RetVal)
- ++Values;
- return new (Values) CatchReturnInst(BB, RetVal, Values, InsertBefore);
+ return new (2) CatchReturnInst(CatchPad, BB, InsertBefore);
}
- static CatchReturnInst *Create(BasicBlock *BB, Value *RetVal,
+ static CatchReturnInst *Create(CatchPadInst *CatchPad, BasicBlock *BB,
BasicBlock *InsertAtEnd) {
+ assert(CatchPad);
assert(BB);
- unsigned Values = 1;
- if (RetVal)
- ++Values;
- return new (Values) CatchReturnInst(BB, RetVal, Values, InsertAtEnd);
+ return new (2) CatchReturnInst(CatchPad, BB, InsertAtEnd);
}
/// Provide fast operand accessors
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
/// Convenience accessors.
- BasicBlock *getSuccessor() const { return cast<BasicBlock>(Op<-1>()); }
- void setSuccessor(BasicBlock *NewSucc) { Op<-1>() = (Value *)NewSucc; }
- unsigned getNumSuccessors() const { return 1; }
+ CatchPadInst *getCatchPad() const { return cast<CatchPadInst>(Op<0>()); }
+ void setCatchPad(CatchPadInst *CatchPad) {
+ assert(CatchPad);
+ Op<0>() = CatchPad;
+ }
- bool hasReturnValue() const { return getNumOperands() > 1; }
- Value *getReturnValue() const { return Op<-2>(); }
- void setReturnValue(Value *RetVal) { Op<-2>() = RetVal; }
+ BasicBlock *getSuccessor() const { return cast<BasicBlock>(Op<1>()); }
+ void setSuccessor(BasicBlock *NewSucc) {
+ assert(NewSucc);
+ Op<1>() = NewSucc;
+ }
+ unsigned getNumSuccessors() const { return 1; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const Instruction *I) {
template <>
struct OperandTraits<CatchReturnInst>
- : public VariadicOperandTraits<CatchReturnInst> {};
+ : public FixedNumOperandTraits<CatchReturnInst, 2> {};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(CatchReturnInst, Value)
+//===----------------------------------------------------------------------===//
+// CleanupReturnInst Class
+//===----------------------------------------------------------------------===//
+
+class CleanupReturnInst : public TerminatorInst {
+ CleanupReturnInst(const CleanupReturnInst &RI);
+
+private:
+ void init(CleanupPadInst *CleanupPad, BasicBlock *UnwindBB);
+ CleanupReturnInst(CleanupPadInst *CleanupPad, BasicBlock *UnwindBB,
+ unsigned Values, Instruction *InsertBefore = nullptr);
+ CleanupReturnInst(CleanupPadInst *CleanupPad, BasicBlock *UnwindBB,
+ unsigned Values, BasicBlock *InsertAtEnd);
+
+ int getUnwindLabelOpIdx() const {
+ assert(hasUnwindDest());
+ return 0;
+ }
+
+protected:
+ // Note: Instruction needs to be a friend here to call cloneImpl.
+ friend class Instruction;
+ CleanupReturnInst *cloneImpl() const;
+
+public:
+ static CleanupReturnInst *Create(CleanupPadInst *CleanupPad,
+ BasicBlock *UnwindBB = nullptr,
+ Instruction *InsertBefore = nullptr) {
+ assert(CleanupPad);
+ unsigned Values = 1;
+ if (UnwindBB)
+ ++Values;
+ return new (Values)
+ CleanupReturnInst(CleanupPad, UnwindBB, Values, InsertBefore);
+ }
+ static CleanupReturnInst *Create(CleanupPadInst *CleanupPad,
+ BasicBlock *UnwindBB,
+ BasicBlock *InsertAtEnd) {
+ assert(CleanupPad);
+ unsigned Values = 1;
+ if (UnwindBB)
+ ++Values;
+ return new (Values)
+ CleanupReturnInst(CleanupPad, UnwindBB, Values, InsertAtEnd);
+ }
+
+ /// Provide fast operand accessors
+ DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
+
+ bool hasUnwindDest() const { return getSubclassDataFromInstruction() & 1; }
+ bool unwindsToCaller() const { return !hasUnwindDest(); }
+
+ /// Convenience accessor.
+ CleanupPadInst *getCleanupPad() const {
+ return cast<CleanupPadInst>(Op<-1>());
+ }
+ void setCleanupPad(CleanupPadInst *CleanupPad) {
+ assert(CleanupPad);
+ Op<-1>() = CleanupPad;
+ }
+
+ unsigned getNumSuccessors() const { return hasUnwindDest() ? 1 : 0; }
+
+ BasicBlock *getUnwindDest() const {
+ return hasUnwindDest() ? cast<BasicBlock>(Op<-2>()) : nullptr;
+ }
+ void setUnwindDest(BasicBlock *NewDest) {
+ assert(NewDest);
+ assert(hasUnwindDest());
+ Op<-2>() = NewDest;
+ }
+
+ // Methods for support type inquiry through isa, cast, and dyn_cast:
+ static inline bool classof(const Instruction *I) {
+ return (I->getOpcode() == Instruction::CleanupRet);
+ }
+ static inline bool classof(const Value *V) {
+ return isa<Instruction>(V) && classof(cast<Instruction>(V));
+ }
+
+private:
+ BasicBlock *getSuccessorV(unsigned Idx) const override;
+ unsigned getNumSuccessorsV() const override;
+ void setSuccessorV(unsigned Idx, BasicBlock *B) override;
+
+ // Shadow Instruction::setInstructionSubclassData with a private forwarding
+ // method so that subclasses cannot accidentally use it.
+ void setInstructionSubclassData(unsigned short D) {
+ Instruction::setInstructionSubclassData(D);
+ }
+};
+
+template <>
+struct OperandTraits<CleanupReturnInst>
+ : public VariadicOperandTraits<CleanupReturnInst, /*MINARITY=*/1> {};
+
+DEFINE_TRANSPARENT_OPERAND_ACCESSORS(CleanupReturnInst, Value)
+
//===----------------------------------------------------------------------===//
// UnreachableInst Class
//===----------------------------------------------------------------------===//
bool CallAnalyzer::visitCatchReturnInst(CatchReturnInst &CRI) {
// FIXME: It's not clear that a single instruction is an accurate model for
- // the inline cost of a cleanupret instruction.
+ // the inline cost of a catchret instruction.
return false;
}
/// GetVal - Get a value with the specified name or ID, creating a
/// forward reference record if needed. This can return null if the value
/// exists but does not have the right type.
-Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
- Type *Ty, LocTy Loc) {
+Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
+ LocTy Loc, OperatorConstraint OC) {
// Look this name up in the normal function symbol table.
Value *Val = F.getValueSymbolTable().lookup(Name);
// If we have the value in the symbol table or fwd-ref table, return it.
if (Val) {
+ // Check operator constraints.
+ switch (OC) {
+ case OC_None:
+ // no constraint
+ break;
+ case OC_CatchPad:
+ if (!isa<CatchPadInst>(Val)) {
+ P.Error(Loc, "'%" + Name + "' is not a catchpad");
+ return nullptr;
+ }
+ break;
+ case OC_CleanupPad:
+ if (!isa<CleanupPadInst>(Val)) {
+ P.Error(Loc, "'%" + Name + "' is not a cleanuppad");
+ return nullptr;
+ }
+ break;
+ }
if (Val->getType() == Ty) return Val;
if (Ty->isLabelTy())
P.Error(Loc, "'%" + Name + "' is not a basic block");
// Otherwise, create a new forward reference for this value and remember it.
Value *FwdVal;
- if (Ty->isLabelTy())
+ if (Ty->isLabelTy()) {
+ assert(!OC);
FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
- else
+ } else if (!OC) {
FwdVal = new Argument(Ty, Name);
+ } else {
+ switch (OC) {
+ case OC_CatchPad:
+ FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {},
+ Name);
+ break;
+ case OC_CleanupPad:
+ FwdVal = CleanupPadInst::Create(F.getContext(), {}, Name);
+ break;
+ default:
+ llvm_unreachable("unexpected constraint");
+ }
+ }
ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
return FwdVal;
}
-Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
- LocTy Loc) {
+Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc,
+ OperatorConstraint OC) {
// Look this name up in the normal function symbol table.
Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
// If we have the value in the symbol table or fwd-ref table, return it.
if (Val) {
+ // Check operator constraint.
+ switch (OC) {
+ case OC_None:
+ // no constraint
+ break;
+ case OC_CatchPad:
+ if (!isa<CatchPadInst>(Val)) {
+ P.Error(Loc, "'%" + Twine(ID) + "' is not a catchpad");
+ return nullptr;
+ }
+ break;
+ case OC_CleanupPad:
+ if (!isa<CleanupPadInst>(Val)) {
+ P.Error(Loc, "'%" + Twine(ID) + "' is not a cleanuppad");
+ return nullptr;
+ }
+ break;
+ }
if (Val->getType() == Ty) return Val;
if (Ty->isLabelTy())
P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
// Otherwise, create a new forward reference for this value and remember it.
Value *FwdVal;
- if (Ty->isLabelTy())
+ if (Ty->isLabelTy()) {
+ assert(!OC);
FwdVal = BasicBlock::Create(F.getContext(), "", &F);
- else
+ } else if (!OC) {
FwdVal = new Argument(Ty);
+ } else {
+ switch (OC) {
+ case OC_CatchPad:
+ FwdVal = CatchPadInst::Create(&F.getEntryBlock(), &F.getEntryBlock(), {});
+ break;
+ case OC_CleanupPad:
+ FwdVal = CleanupPadInst::Create(F.getContext(), {});
+ break;
+ default:
+ llvm_unreachable("unexpected constraint");
+ }
+ }
ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
return FwdVal;
std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
ForwardRefValIDs.find(NameID);
if (FI != ForwardRefValIDs.end()) {
- if (FI->second.first->getType() != Inst->getType())
+ Value *Sentinel = FI->second.first;
+ if (Sentinel->getType() != Inst->getType())
return P.Error(NameLoc, "instruction forward referenced with type '" +
getTypeString(FI->second.first->getType()) + "'");
- FI->second.first->replaceAllUsesWith(Inst);
- delete FI->second.first;
+ // Check operator constraints. We only put cleanuppads or catchpads in
+ // the forward value map if the value is constrained to match.
+ if (isa<CatchPadInst>(Sentinel)) {
+ if (!isa<CatchPadInst>(Inst))
+ return P.Error(FI->second.second,
+ "'%" + Twine(NameID) + "' is not a catchpad");
+ } else if (isa<CleanupPadInst>(Sentinel)) {
+ if (!isa<CleanupPadInst>(Inst))
+ return P.Error(FI->second.second,
+ "'%" + Twine(NameID) + "' is not a cleanuppad");
+ }
+
+ Sentinel->replaceAllUsesWith(Inst);
+ delete Sentinel;
ForwardRefValIDs.erase(FI);
}
std::map<std::string, std::pair<Value*, LocTy> >::iterator
FI = ForwardRefVals.find(NameStr);
if (FI != ForwardRefVals.end()) {
- if (FI->second.first->getType() != Inst->getType())
+ Value *Sentinel = FI->second.first;
+ if (Sentinel->getType() != Inst->getType())
return P.Error(NameLoc, "instruction forward referenced with type '" +
getTypeString(FI->second.first->getType()) + "'");
- FI->second.first->replaceAllUsesWith(Inst);
- delete FI->second.first;
+ // Check operator constraints. We only put cleanuppads or catchpads in
+ // the forward value map if the value is constrained to match.
+ if (isa<CatchPadInst>(Sentinel)) {
+ if (!isa<CatchPadInst>(Inst))
+ return P.Error(FI->second.second,
+ "'%" + NameStr + "' is not a catchpad");
+ } else if (isa<CleanupPadInst>(Sentinel)) {
+ if (!isa<CleanupPadInst>(Inst))
+ return P.Error(FI->second.second,
+ "'%" + NameStr + "' is not a cleanuppad");
+ }
+
+ Sentinel->replaceAllUsesWith(Inst);
+ delete Sentinel;
ForwardRefVals.erase(FI);
}
//===----------------------------------------------------------------------===//
bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
- PerFunctionState *PFS) {
+ PerFunctionState *PFS,
+ OperatorConstraint OC) {
if (Ty->isFunctionTy())
return Error(ID.Loc, "functions are not values, refer to them as pointers");
+ if (OC && ID.Kind != ValID::t_LocalID && ID.Kind != ValID::t_LocalName) {
+ switch (OC) {
+ case OC_CatchPad:
+ return Error(ID.Loc, "Catchpad value required in this position");
+ case OC_CleanupPad:
+ return Error(ID.Loc, "Cleanuppad value required in this position");
+ default:
+ llvm_unreachable("Unexpected constraint kind");
+ }
+ }
+
switch (ID.Kind) {
case ValID::t_LocalID:
if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
- V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
+ V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc, OC);
return V == nullptr;
case ValID::t_LocalName:
if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
- V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
+ V = PFS->GetVal(ID.StrVal, Ty, ID.Loc, OC);
return V == nullptr;
case ValID::t_InlineAsm: {
assert(ID.FTy);
}
}
-bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
+bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS,
+ OperatorConstraint OC) {
V = nullptr;
ValID ID;
- return ParseValID(ID, PFS) ||
- ConvertValIDToValue(Ty, ID, V, PFS);
+ return ParseValID(ID, PFS) || ConvertValIDToValue(Ty, ID, V, PFS, OC);
}
bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
PerFunctionState &PFS) {
- if (ParseToken(lltok::lsquare, "expected '[' in cleanuppad"))
+ if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
return true;
while (Lex.getKind() != lltok::rsquare) {
}
/// ParseCleanupRet
-/// ::= 'cleanupret' ('void' | TypeAndValue) unwind ('to' 'caller' | TypeAndValue)
+/// ::= 'cleanupret' Value unwind ('to' 'caller' | TypeAndValue)
bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
- Type *RetTy = nullptr;
- Value *RetVal = nullptr;
- if (ParseType(RetTy, /*AllowVoid=*/true))
- return true;
+ Value *CleanupPad = nullptr;
- if (!RetTy->isVoidTy())
- if (ParseValue(RetTy, RetVal, PFS))
- return true;
+ if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS, OC_CleanupPad))
+ return true;
if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
return true;
}
}
- Inst = CleanupReturnInst::Create(Context, RetVal, UnwindBB);
+ Inst = CleanupReturnInst::Create(cast<CleanupPadInst>(CleanupPad), UnwindBB);
return false;
}
/// ParseCatchRet
-/// ::= 'catchret' ('void' | TypeAndValue) 'to' TypeAndValue
+/// ::= 'catchret' Value 'to' TypeAndValue
bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
- Type *RetTy = nullptr;
- Value *RetVal = nullptr;
+ Value *CatchPad = nullptr;
- if (ParseType(RetTy, /*AllowVoid=*/true))
+ if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS, OC_CatchPad))
return true;
- if (!RetTy->isVoidTy())
- if (ParseValue(RetTy, RetVal, PFS))
- return true;
-
BasicBlock *BB;
if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
ParseTypeAndBasicBlock(BB, PFS))
return true;
- Inst = CatchReturnInst::Create(BB, RetVal);
+ Inst = CatchReturnInst::Create(cast<CatchPadInst>(CatchPad), BB);
return false;
}
/// ParseCatchPad
-/// ::= 'catchpad' Type ParamList 'to' TypeAndValue 'unwind' TypeAndValue
+/// ::= 'catchpad' ParamList 'to' TypeAndValue 'unwind' TypeAndValue
bool LLParser::ParseCatchPad(Instruction *&Inst, PerFunctionState &PFS) {
- Type *RetType = nullptr;
-
SmallVector<Value *, 8> Args;
- if (ParseType(RetType, /*AllowVoid=*/true) || ParseExceptionArgs(Args, PFS))
+ if (ParseExceptionArgs(Args, PFS))
return true;
BasicBlock *NormalBB, *UnwindBB;
ParseTypeAndBasicBlock(UnwindBB, PFS))
return true;
- Inst = CatchPadInst::Create(RetType, NormalBB, UnwindBB, Args);
+ Inst = CatchPadInst::Create(NormalBB, UnwindBB, Args);
return false;
}
/// ParseCleanupPad
/// ::= 'cleanuppad' ParamList
bool LLParser::ParseCleanupPad(Instruction *&Inst, PerFunctionState &PFS) {
- Type *RetType = nullptr;
-
SmallVector<Value *, 8> Args;
- if (ParseType(RetType, /*AllowVoid=*/true) || ParseExceptionArgs(Args, PFS))
+ if (ParseExceptionArgs(Args, PFS))
return true;
- Inst = CleanupPadInst::Create(RetType, Args);
+ Inst = CleanupPadInst::Create(Context, Args);
return false;
}
unsigned MDKind, MDSlot;
};
+ /// Indicates which operator an operand allows (for the few operands that
+ /// may only reference a certain operator).
+ enum OperatorConstraint {
+ OC_None = 0, // No constraint
+ OC_CatchPad, // Must be CatchPadInst
+ OC_CleanupPad // Must be CleanupPadInst
+ };
+
SmallVector<Instruction*, 64> InstsWithTBAATag;
// Type resolution handling data structures. The location is set when we
/// GetVal - Get a value with the specified name or ID, creating a
/// forward reference record if needed. This can return null if the value
/// exists but does not have the right type.
- Value *GetVal(const std::string &Name, Type *Ty, LocTy Loc);
- Value *GetVal(unsigned ID, Type *Ty, LocTy Loc);
+ Value *GetVal(const std::string &Name, Type *Ty, LocTy Loc,
+ OperatorConstraint OC = OC_None);
+ Value *GetVal(unsigned ID, Type *Ty, LocTy Loc,
+ OperatorConstraint OC = OC_None);
/// SetInstName - After an instruction is parsed and inserted into its
/// basic block, this installs its name.
};
bool ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
- PerFunctionState *PFS);
+ PerFunctionState *PFS,
+ OperatorConstraint OC = OC_None);
bool parseConstantValue(Type *Ty, Constant *&C);
- bool ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS);
- bool ParseValue(Type *Ty, Value *&V, PerFunctionState &PFS) {
- return ParseValue(Ty, V, &PFS);
+ bool ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS,
+ OperatorConstraint OC = OC_None);
+ bool ParseValue(Type *Ty, Value *&V, PerFunctionState &PFS,
+ OperatorConstraint OC = OC_None) {
+ return ParseValue(Ty, V, &PFS, OC);
}
bool ParseValue(Type *Ty, Value *&V, LocTy &Loc,
PerFunctionState &PFS) {
SWITCH_INST_MAGIC = 0x4B5 // May 2012 => 1205 => Hex
};
+/// Indicates which operator an operand allows (for the few operands that may
+/// only reference a certain operator).
+enum OperatorConstraint {
+ OC_None = 0, // No constraint
+ OC_CatchPad, // Must be CatchPadInst
+ OC_CleanupPad // Must be CleanupPadInst
+};
+
class BitcodeReaderValueList {
std::vector<WeakVH> ValuePtrs;
}
Constant *getConstantFwdRef(unsigned Idx, Type *Ty);
- Value *getValueFwdRef(unsigned Idx, Type *Ty);
+ Value *getValueFwdRef(unsigned Idx, Type *Ty,
+ OperatorConstraint OC = OC_None);
- void assignValue(Value *V, unsigned Idx);
+ bool assignValue(Value *V, unsigned Idx);
/// Once all constants are read, this method bulk resolves any forward
/// references.
StructType *createIdentifiedStructType(LLVMContext &Context);
Type *getTypeByID(unsigned ID);
- Value *getFnValueByID(unsigned ID, Type *Ty) {
+ Value *getFnValueByID(unsigned ID, Type *Ty,
+ OperatorConstraint OC = OC_None) {
if (Ty && Ty->isMetadataTy())
return MetadataAsValue::get(Ty->getContext(), getFnMetadataByID(ID));
- return ValueList.getValueFwdRef(ID, Ty);
+ return ValueList.getValueFwdRef(ID, Ty, OC);
}
Metadata *getFnMetadataByID(unsigned ID) {
return MDValueList.getValueFwdRef(ID);
/// past the number of slots used by the value in the record. Return true if
/// there is an error.
bool popValue(SmallVectorImpl<uint64_t> &Record, unsigned &Slot,
- unsigned InstNum, Type *Ty, Value *&ResVal) {
- if (getValue(Record, Slot, InstNum, Ty, ResVal))
+ unsigned InstNum, Type *Ty, Value *&ResVal,
+ OperatorConstraint OC = OC_None) {
+ if (getValue(Record, Slot, InstNum, Ty, ResVal, OC))
return true;
// All values currently take a single record slot.
++Slot;
/// Like popValue, but does not increment the Slot number.
bool getValue(SmallVectorImpl<uint64_t> &Record, unsigned Slot,
- unsigned InstNum, Type *Ty, Value *&ResVal) {
- ResVal = getValue(Record, Slot, InstNum, Ty);
+ unsigned InstNum, Type *Ty, Value *&ResVal,
+ OperatorConstraint OC = OC_None) {
+ ResVal = getValue(Record, Slot, InstNum, Ty, OC);
return ResVal == nullptr;
}
/// Version of getValue that returns ResVal directly, or 0 if there is an
/// error.
Value *getValue(SmallVectorImpl<uint64_t> &Record, unsigned Slot,
- unsigned InstNum, Type *Ty) {
+ unsigned InstNum, Type *Ty, OperatorConstraint OC = OC_None) {
if (Slot == Record.size()) return nullptr;
unsigned ValNo = (unsigned)Record[Slot];
// Adjust the ValNo, if it was encoded relative to the InstNum.
if (UseRelativeIDs)
ValNo = InstNum - ValNo;
- return getFnValueByID(ValNo, Ty);
+ return getFnValueByID(ValNo, Ty, OC);
}
/// Like getValue, but decodes signed VBRs.
Value *getValueSigned(SmallVectorImpl<uint64_t> &Record, unsigned Slot,
- unsigned InstNum, Type *Ty) {
+ unsigned InstNum, Type *Ty,
+ OperatorConstraint OC = OC_None) {
if (Slot == Record.size()) return nullptr;
unsigned ValNo = (unsigned)decodeSignRotatedValue(Record[Slot]);
// Adjust the ValNo, if it was encoded relative to the InstNum.
if (UseRelativeIDs)
ValNo = InstNum - ValNo;
- return getFnValueByID(ValNo, Ty);
+ return getFnValueByID(ValNo, Ty, OC);
}
/// Converts alignment exponent (i.e. power of two (or zero)) to the
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ConstantPlaceHolder, Value)
}
-void BitcodeReaderValueList::assignValue(Value *V, unsigned Idx) {
+bool BitcodeReaderValueList::assignValue(Value *V, unsigned Idx) {
if (Idx == size()) {
push_back(V);
- return;
+ return false;
}
if (Idx >= size())
WeakVH &OldV = ValuePtrs[Idx];
if (!OldV) {
OldV = V;
- return;
+ return false;
}
// Handle constants and non-constants (e.g. instrs) differently for
} else {
// If there was a forward reference to this value, replace it.
Value *PrevVal = OldV;
+ // Check operator constraints. We only put cleanuppads or catchpads in
+ // the forward value map if the value is constrained to match.
+ if (CatchPadInst *CatchPad = dyn_cast<CatchPadInst>(PrevVal)) {
+ if (!isa<CatchPadInst>(V))
+ return true;
+ // Delete the dummy basic block that was created with the sentinel
+ // catchpad.
+ BasicBlock *DummyBlock = CatchPad->getUnwindDest();
+ assert(DummyBlock == CatchPad->getNormalDest());
+ CatchPad->dropAllReferences();
+ delete DummyBlock;
+ } else if (isa<CleanupPadInst>(PrevVal)) {
+ if (!isa<CleanupPadInst>(V))
+ return true;
+ }
OldV->replaceAllUsesWith(V);
delete PrevVal;
}
+
+ return false;
}
return C;
}
-Value *BitcodeReaderValueList::getValueFwdRef(unsigned Idx, Type *Ty) {
+Value *BitcodeReaderValueList::getValueFwdRef(unsigned Idx, Type *Ty,
+ OperatorConstraint OC) {
// Bail out for a clearly invalid value. This would make us call resize(0)
if (Idx == UINT_MAX)
return nullptr;
// If the types don't match, it's invalid.
if (Ty && Ty != V->getType())
return nullptr;
- return V;
+ if (!OC)
+ return V;
+ // Use dyn_cast to enforce operator constraints
+ switch (OC) {
+ case OC_CatchPad:
+ return dyn_cast<CatchPadInst>(V);
+ case OC_CleanupPad:
+ return dyn_cast<CleanupPadInst>(V);
+ default:
+ llvm_unreachable("Unexpected operator constraint");
+ }
}
// No type specified, must be invalid reference.
if (!Ty) return nullptr;
// Create and return a placeholder, which will later be RAUW'd.
- Value *V = new Argument(Ty);
+ Value *V;
+ switch (OC) {
+ case OC_None:
+ V = new Argument(Ty);
+ break;
+ case OC_CatchPad: {
+ BasicBlock *BB = BasicBlock::Create(Context);
+ V = CatchPadInst::Create(BB, BB, {});
+ break;
+ }
+ default:
+ assert(OC == OC_CleanupPad && "unexpected operator constraint");
+ V = CleanupPadInst::Create(Context, {});
+ break;
+ }
+
ValuePtrs[Idx] = V;
return V;
}
}
}
- ValueList.assignValue(V, NextCstNo);
+ if (ValueList.assignValue(V, NextCstNo))
+ return error("Invalid forward reference");
++NextCstNo;
}
}
}
break;
}
- // CLEANUPRET: [] or [ty,val] or [bb#] or [ty,val,bb#]
+ // CLEANUPRET: [val] or [val,bb#]
case bitc::FUNC_CODE_INST_CLEANUPRET: {
- if (Record.size() < 2)
+ if (Record.size() != 1 && Record.size() != 2)
return error("Invalid record");
unsigned Idx = 0;
- bool HasReturnValue = !!Record[Idx++];
- bool HasUnwindDest = !!Record[Idx++];
- Value *RetVal = nullptr;
- BasicBlock *UnwindDest = nullptr;
-
- if (HasReturnValue && getValueTypePair(Record, Idx, NextValueNo, RetVal))
+ Value *CleanupPad = getValue(Record, Idx++, NextValueNo,
+ Type::getTokenTy(Context), OC_CleanupPad);
+ if (!CleanupPad)
return error("Invalid record");
- if (HasUnwindDest) {
- if (Idx == Record.size())
- return error("Invalid record");
+ BasicBlock *UnwindDest = nullptr;
+ if (Record.size() == 2) {
UnwindDest = getBasicBlock(Record[Idx++]);
if (!UnwindDest)
return error("Invalid record");
}
- if (Record.size() != Idx)
- return error("Invalid record");
-
- I = CleanupReturnInst::Create(Context, RetVal, UnwindDest);
+ I = CleanupReturnInst::Create(cast<CleanupPadInst>(CleanupPad),
+ UnwindDest);
InstructionList.push_back(I);
break;
}
- case bitc::FUNC_CODE_INST_CATCHRET: { // CATCHRET: [bb#]
- if (Record.size() != 1 && Record.size() != 3)
+ case bitc::FUNC_CODE_INST_CATCHRET: { // CATCHRET: [val,bb#]
+ if (Record.size() != 2)
return error("Invalid record");
unsigned Idx = 0;
+ Value *CatchPad = getValue(Record, Idx++, NextValueNo,
+ Type::getTokenTy(Context), OC_CatchPad);
+ if (!CatchPad)
+ return error("Invalid record");
BasicBlock *BB = getBasicBlock(Record[Idx++]);
if (!BB)
return error("Invalid record");
- Value *RetVal = nullptr;
- if (Record.size() == 3 &&
- getValueTypePair(Record, Idx, NextValueNo, RetVal))
- return error("Invalid record");
- I = CatchReturnInst::Create(BB, RetVal);
+ I = CatchReturnInst::Create(cast<CatchPadInst>(CatchPad), BB);
InstructionList.push_back(I);
break;
}
- case bitc::FUNC_CODE_INST_CATCHPAD: { // CATCHPAD: [ty,bb#,bb#,num,(ty,val)*]
- if (Record.size() < 4)
+ case bitc::FUNC_CODE_INST_CATCHPAD: { // CATCHPAD: [bb#,bb#,num,(ty,val)*]
+ if (Record.size() < 3)
return error("Invalid record");
unsigned Idx = 0;
- Type *Ty = getTypeByID(Record[Idx++]);
- if (!Ty)
- return error("Invalid record");
BasicBlock *NormalBB = getBasicBlock(Record[Idx++]);
if (!NormalBB)
return error("Invalid record");
if (Record.size() != Idx)
return error("Invalid record");
- I = CatchPadInst::Create(Ty, NormalBB, UnwindBB, Args);
+ I = CatchPadInst::Create(NormalBB, UnwindBB, Args);
InstructionList.push_back(I);
break;
}
InstructionList.push_back(I);
break;
}
- case bitc::FUNC_CODE_INST_CLEANUPPAD: { // CLEANUPPAD: [ty, num,(ty,val)*]
- if (Record.size() < 2)
+ case bitc::FUNC_CODE_INST_CLEANUPPAD: { // CLEANUPPAD: [num,(ty,val)*]
+ if (Record.size() < 1)
return error("Invalid record");
unsigned Idx = 0;
- Type *Ty = getTypeByID(Record[Idx++]);
- if (!Ty)
- return error("Invalid record");
unsigned NumArgOperands = Record[Idx++];
SmallVector<Value *, 2> Args;
for (unsigned Op = 0; Op != NumArgOperands; ++Op) {
if (Record.size() != Idx)
return error("Invalid record");
- I = CleanupPadInst::Create(Ty, Args);
+ I = CleanupPadInst::Create(Context, Args);
InstructionList.push_back(I);
break;
}
// Non-void values get registered in the value table for future use.
if (I && !I->getType()->isVoidTy())
- ValueList.assignValue(I, NextValueNo++);
+ if (ValueList.assignValue(I, NextValueNo++))
+ return error("Invalid forward reference");
}
OutOfRecordLoop:
case Instruction::CleanupRet: {
Code = bitc::FUNC_CODE_INST_CLEANUPRET;
const auto &CRI = cast<CleanupReturnInst>(I);
- Vals.push_back(CRI.hasReturnValue());
- Vals.push_back(CRI.hasUnwindDest());
- if (CRI.hasReturnValue())
- PushValueAndType(CRI.getReturnValue(), InstID, Vals, VE);
+ pushValue(CRI.getCleanupPad(), InstID, Vals, VE);
if (CRI.hasUnwindDest())
Vals.push_back(VE.getValueID(CRI.getUnwindDest()));
break;
case Instruction::CatchRet: {
Code = bitc::FUNC_CODE_INST_CATCHRET;
const auto &CRI = cast<CatchReturnInst>(I);
+ pushValue(CRI.getCatchPad(), InstID, Vals, VE);
Vals.push_back(VE.getValueID(CRI.getSuccessor()));
- if (CRI.hasReturnValue())
- PushValueAndType(CRI.getReturnValue(), InstID, Vals, VE);
break;
}
case Instruction::CatchPad: {
Code = bitc::FUNC_CODE_INST_CATCHPAD;
const auto &CPI = cast<CatchPadInst>(I);
- Vals.push_back(VE.getTypeID(CPI.getType()));
Vals.push_back(VE.getValueID(CPI.getNormalDest()));
Vals.push_back(VE.getValueID(CPI.getUnwindDest()));
unsigned NumArgOperands = CPI.getNumArgOperands();
case Instruction::CleanupPad: {
Code = bitc::FUNC_CODE_INST_CLEANUPPAD;
const auto &CPI = cast<CleanupPadInst>(I);
- Vals.push_back(VE.getTypeID(CPI.getType()));
unsigned NumOperands = CPI.getNumOperands();
Vals.push_back(NumOperands);
for (unsigned Op = 0; Op != NumOperands; ++Op)
if (isa<CatchPadInst>(TI) || isa<CatchEndPadInst>(TI) ||
isa<TerminatePadInst>(TI))
return BB;
- return cast<CleanupPadInst>(cast<CleanupReturnInst>(TI)->getReturnValue())
- ->getParent();
+ return cast<CleanupReturnInst>(TI)->getCleanupPad()->getParent();
}
static void calculateExplicitStateNumbers(WinEHFuncInfo &FuncInfo,
// The token consumed by a CatchReturnInst must match the funclet token.
bool IsUnreachableCatchret = false;
if (auto *CRI = dyn_cast<CatchReturnInst>(TI))
- IsUnreachableCatchret = CRI->getReturnValue() != CatchPad;
+ IsUnreachableCatchret = CRI->getCatchPad() != CatchPad;
// The token consumed by a CleanupPadInst must match the funclet token.
bool IsUnreachableCleanupret = false;
if (auto *CRI = dyn_cast<CleanupReturnInst>(TI))
- IsUnreachableCleanupret = CRI->getReturnValue() != CleanupPad;
+ IsUnreachableCleanupret = CRI->getCleanupPad() != CleanupPad;
if (IsUnreachableRet || IsUnreachableCatchret || IsUnreachableCleanupret) {
new UnreachableInst(BB->getContext(), TI);
TI->eraseFromParent();
writeOperand(LPI->getClause(i), true);
}
} else if (const auto *CPI = dyn_cast<CatchPadInst>(&I)) {
- Out << ' ';
- TypePrinter.print(I.getType(), Out);
-
Out << " [";
for (unsigned Op = 0, NumOps = CPI->getNumArgOperands(); Op < NumOps;
++Op) {
else
Out << "to caller";
} else if (const auto *CPI = dyn_cast<CleanupPadInst>(&I)) {
- Out << ' ';
- TypePrinter.print(I.getType(), Out);
-
Out << " [";
for (unsigned Op = 0, NumOps = CPI->getNumOperands(); Op < NumOps; ++Op) {
if (Op > 0)
} else if (isa<ReturnInst>(I) && !Operand) {
Out << " void";
} else if (const auto *CRI = dyn_cast<CatchReturnInst>(&I)) {
- if (CRI->hasReturnValue()) {
- Out << ' ';
- writeOperand(CRI->getReturnValue(), /*PrintType=*/true);
- } else {
- Out << " void";
- }
+ Out << ' ';
+ writeOperand(CRI->getCatchPad(), /*PrintType=*/false);
Out << " to ";
writeOperand(CRI->getSuccessor(), /*PrintType=*/true);
} else if (const auto *CRI = dyn_cast<CleanupReturnInst>(&I)) {
- if (CRI->hasReturnValue()) {
- Out << ' ';
- writeOperand(CRI->getReturnValue(), /*PrintType=*/true);
- } else {
- Out << " void";
- }
+ Out << ' ';
+ writeOperand(CRI->getCleanupPad(), /*PrintType=*/false);
Out << " unwind ";
if (CRI->hasUnwindDest())
case ExtractValue: return "extractvalue";
case InsertValue: return "insertvalue";
case LandingPad: return "landingpad";
- case CleanupPad: return "cleanuppad";
+ case CleanupPad: return "cleanuppad";
default: return "<Invalid operator> ";
}
CRI.getNumOperands()) {
SubclassOptionalData = CRI.SubclassOptionalData;
setInstructionSubclassData(CRI.getSubclassDataFromInstruction());
- if (Value *RetVal = CRI.getReturnValue())
- setReturnValue(RetVal);
- if (BasicBlock *UnwindDest = CRI.getUnwindDest())
- setUnwindDest(UnwindDest);
+ Op<-1>() = CRI.Op<-1>();
+ if (CRI.hasUnwindDest())
+ Op<-2>() = CRI.Op<-2>();
}
-void CleanupReturnInst::init(Value *RetVal, BasicBlock *UnwindBB) {
+void CleanupReturnInst::init(CleanupPadInst *CleanupPad, BasicBlock *UnwindBB) {
SubclassOptionalData = 0;
if (UnwindBB)
setInstructionSubclassData(getSubclassDataFromInstruction() | 1);
- if (RetVal)
- setInstructionSubclassData(getSubclassDataFromInstruction() | 2);
+ Op<-1>() = CleanupPad;
if (UnwindBB)
- setUnwindDest(UnwindBB);
- if (RetVal)
- setReturnValue(RetVal);
+ Op<-2>() = UnwindBB;
}
-CleanupReturnInst::CleanupReturnInst(LLVMContext &C, Value *RetVal,
+CleanupReturnInst::CleanupReturnInst(CleanupPadInst *CleanupPad,
BasicBlock *UnwindBB, unsigned Values,
Instruction *InsertBefore)
- : TerminatorInst(Type::getVoidTy(C), Instruction::CleanupRet,
+ : TerminatorInst(Type::getVoidTy(CleanupPad->getContext()),
+ Instruction::CleanupRet,
OperandTraits<CleanupReturnInst>::op_end(this) - Values,
Values, InsertBefore) {
- init(RetVal, UnwindBB);
+ init(CleanupPad, UnwindBB);
}
-CleanupReturnInst::CleanupReturnInst(LLVMContext &C, Value *RetVal,
+CleanupReturnInst::CleanupReturnInst(CleanupPadInst *CleanupPad,
BasicBlock *UnwindBB, unsigned Values,
BasicBlock *InsertAtEnd)
- : TerminatorInst(Type::getVoidTy(C), Instruction::CleanupRet,
+ : TerminatorInst(Type::getVoidTy(CleanupPad->getContext()),
+ Instruction::CleanupRet,
OperandTraits<CleanupReturnInst>::op_end(this) - Values,
Values, InsertAtEnd) {
- init(RetVal, UnwindBB);
-}
-
-BasicBlock *CleanupReturnInst::getUnwindDest() const {
- if (hasUnwindDest())
- return cast<BasicBlock>(getOperand(getUnwindLabelOpIdx()));
- return nullptr;
-}
-void CleanupReturnInst::setUnwindDest(BasicBlock *NewDest) {
- assert(NewDest);
- setOperand(getUnwindLabelOpIdx(), NewDest);
+ init(CleanupPad, UnwindBB);
}
BasicBlock *CleanupReturnInst::getSuccessorV(unsigned Idx) const {
//===----------------------------------------------------------------------===//
// CatchReturnInst Implementation
//===----------------------------------------------------------------------===//
-void CatchReturnInst::init(BasicBlock *BB, Value *RetVal) {
- Op<-1>() = BB;
- if (RetVal)
- Op<-2>() = RetVal;
+void CatchReturnInst::init(CatchPadInst *CatchPad, BasicBlock *BB) {
+ Op<0>() = CatchPad;
+ Op<1>() = BB;
}
CatchReturnInst::CatchReturnInst(const CatchReturnInst &CRI)
: TerminatorInst(Type::getVoidTy(CRI.getContext()), Instruction::CatchRet,
- OperandTraits<CatchReturnInst>::op_end(this) -
- CRI.getNumOperands(),
- CRI.getNumOperands()) {
- Op<-1>() = CRI.Op<-1>();
- if (CRI.getNumOperands() != 1) {
- assert(CRI.getNumOperands() == 2);
- Op<-2>() = CRI.Op<-2>();
- }
+ OperandTraits<CatchReturnInst>::op_begin(this), 2) {
+ Op<0>() = CRI.Op<0>();
+ Op<1>() = CRI.Op<1>();
}
-CatchReturnInst::CatchReturnInst(BasicBlock *BB, Value *RetVal, unsigned Values,
+CatchReturnInst::CatchReturnInst(CatchPadInst *CatchPad, BasicBlock *BB,
Instruction *InsertBefore)
: TerminatorInst(Type::getVoidTy(BB->getContext()), Instruction::CatchRet,
- OperandTraits<CatchReturnInst>::op_end(this) - Values,
- Values, InsertBefore) {
- init(BB, RetVal);
+ OperandTraits<CatchReturnInst>::op_begin(this), 2,
+ InsertBefore) {
+ init(CatchPad, BB);
}
-CatchReturnInst::CatchReturnInst(BasicBlock *BB, Value *RetVal, unsigned Values,
+CatchReturnInst::CatchReturnInst(CatchPadInst *CatchPad, BasicBlock *BB,
BasicBlock *InsertAtEnd)
: TerminatorInst(Type::getVoidTy(BB->getContext()), Instruction::CatchRet,
- OperandTraits<CatchReturnInst>::op_end(this) - Values,
- Values, InsertAtEnd) {
- init(BB, RetVal);
+ OperandTraits<CatchReturnInst>::op_begin(this), 2,
+ InsertAtEnd) {
+ init(CatchPad, BB);
}
BasicBlock *CatchReturnInst::getSuccessorV(unsigned Idx) const {
std::copy(CPI.op_begin(), CPI.op_end(), op_begin());
}
-CatchPadInst::CatchPadInst(Type *RetTy, BasicBlock *IfNormal,
- BasicBlock *IfException, ArrayRef<Value *> Args,
- unsigned Values, const Twine &NameStr,
- Instruction *InsertBefore)
- : TerminatorInst(RetTy, Instruction::CatchPad,
+CatchPadInst::CatchPadInst(BasicBlock *IfNormal, BasicBlock *IfException,
+ ArrayRef<Value *> Args, unsigned Values,
+ const Twine &NameStr, Instruction *InsertBefore)
+ : TerminatorInst(Type::getTokenTy(IfNormal->getContext()),
+ Instruction::CatchPad,
OperandTraits<CatchPadInst>::op_end(this) - Values, Values,
InsertBefore) {
init(IfNormal, IfException, Args, NameStr);
}
-CatchPadInst::CatchPadInst(Type *RetTy, BasicBlock *IfNormal,
- BasicBlock *IfException, ArrayRef<Value *> Args,
- unsigned Values, const Twine &NameStr,
- BasicBlock *InsertAtEnd)
- : TerminatorInst(RetTy, Instruction::CatchPad,
+CatchPadInst::CatchPadInst(BasicBlock *IfNormal, BasicBlock *IfException,
+ ArrayRef<Value *> Args, unsigned Values,
+ const Twine &NameStr, BasicBlock *InsertAtEnd)
+ : TerminatorInst(Type::getTokenTy(IfNormal->getContext()),
+ Instruction::CatchPad,
OperandTraits<CatchPadInst>::op_end(this) - Values, Values,
InsertAtEnd) {
init(IfNormal, IfException, Args, NameStr);
std::copy(CPI.op_begin(), CPI.op_end(), op_begin());
}
-CleanupPadInst::CleanupPadInst(Type *RetTy, ArrayRef<Value *> Args,
+CleanupPadInst::CleanupPadInst(LLVMContext &C, ArrayRef<Value *> Args,
const Twine &NameStr, Instruction *InsertBefore)
- : Instruction(RetTy, Instruction::CleanupPad,
+ : Instruction(Type::getTokenTy(C), Instruction::CleanupPad,
OperandTraits<CleanupPadInst>::op_end(this) - Args.size(),
Args.size(), InsertBefore) {
init(Args, NameStr);
}
-CleanupPadInst::CleanupPadInst(Type *RetTy, ArrayRef<Value *> Args,
+CleanupPadInst::CleanupPadInst(LLVMContext &C, ArrayRef<Value *> Args,
const Twine &NameStr, BasicBlock *InsertAtEnd)
- : Instruction(RetTy, Instruction::CleanupPad,
+ : Instruction(Type::getTokenTy(C), Instruction::CleanupPad,
OperandTraits<CleanupPadInst>::op_end(this) - Args.size(),
Args.size(), InsertAtEnd) {
init(Args, NameStr);
/// \brief Track unresolved string-based type references.
SmallDenseMap<const MDString *, const MDNode *, 32> UnresolvedTypeRefs;
- /// \brief The result type for a catchpad.
- Type *CatchPadResultTy;
-
- /// \brief The result type for a cleanuppad.
- Type *CleanupPadResultTy;
-
/// \brief The result type for a landingpad.
Type *LandingPadResultTy;
public:
explicit Verifier(raw_ostream &OS)
- : VerifierSupport(OS), Context(nullptr), CatchPadResultTy(nullptr),
- CleanupPadResultTy(nullptr), LandingPadResultTy(nullptr),
+ : VerifierSupport(OS), Context(nullptr), LandingPadResultTy(nullptr),
SawFrameEscape(false) {}
bool verify(const Function &F) {
// FIXME: We strip const here because the inst visitor strips const.
visit(const_cast<Function &>(F));
InstsInThisBlock.clear();
- CatchPadResultTy = nullptr;
- CleanupPadResultTy = nullptr;
LandingPadResultTy = nullptr;
SawFrameEscape = false;
void Verifier::visitCatchPadInst(CatchPadInst &CPI) {
visitEHPadPredecessors(CPI);
- if (!CatchPadResultTy)
- CatchPadResultTy = CPI.getType();
- else
- Assert(CatchPadResultTy == CPI.getType(),
- "The catchpad instruction should have a consistent result type "
- "inside a function.",
- &CPI);
-
BasicBlock *BB = CPI.getParent();
Function *F = BB->getParent();
Assert(F->hasPersonalityFn(),
"CatchPadInst not the first non-PHI instruction in the block.",
&CPI);
+ if (!BB->getSinglePredecessor())
+ for (BasicBlock *PredBB : predecessors(BB)) {
+ Assert(!isa<CatchPadInst>(PredBB->getTerminator()),
+ "CatchPadInst with CatchPadInst predecessor cannot have any other "
+ "predecessors.",
+ &CPI);
+ }
+
BasicBlock *UnwindDest = CPI.getUnwindDest();
Instruction *I = UnwindDest->getFirstNonPHI();
Assert(
BasicBlock *BB = CPI.getParent();
- if (!CleanupPadResultTy)
- CleanupPadResultTy = CPI.getType();
- else
- Assert(CleanupPadResultTy == CPI.getType(),
- "The cleanuppad instruction should have a consistent result type "
- "inside a function.",
- &CPI);
-
Function *F = BB->getParent();
Assert(F->hasPersonalityFn(),
"CleanupPadInst needs to be in a function with a personality.", &CPI);
"CleanupPadInst not the first non-PHI instruction in the block.",
&CPI);
+ CleanupReturnInst *FirstCRI = nullptr;
+ for (User *U : CPI.users())
+ if (CleanupReturnInst *CRI = dyn_cast<CleanupReturnInst>(U)) {
+ if (!FirstCRI)
+ FirstCRI = CRI;
+ else
+ Assert(CRI->getUnwindDest() == FirstCRI->getUnwindDest(),
+ "Cleanuprets from same cleanuppad have different exceptional "
+ "successors.",
+ FirstCRI, CRI);
+ }
+
visitInstruction(CPI);
}
}
void visitCleanupPadInst(CleanupPadInst &I) {
- if (!I.getType()->isVoidTy()) {
- setShadow(&I, getCleanShadow(&I));
- setOrigin(&I, getCleanOrigin());
- }
+ setShadow(&I, getCleanShadow(&I));
+ setOrigin(&I, getCleanOrigin());
}
void visitCatchPad(CatchPadInst &I) {
- if (!I.getType()->isVoidTy()) {
- setShadow(&I, getCleanShadow(&I));
- setOrigin(&I, getCleanOrigin());
- }
+ setShadow(&I, getCleanShadow(&I));
+ setOrigin(&I, getCleanOrigin());
}
void visitTerminatePad(TerminatePadInst &I) {
if (auto *CRI = dyn_cast<CleanupReturnInst>(BB->getTerminator())) {
if (CRI->unwindsToCaller()) {
- CleanupReturnInst::Create(CRI->getContext(), CRI->getReturnValue(),
- UnwindDest, CRI);
+ CleanupReturnInst::Create(CRI->getCleanupPad(), UnwindDest, CRI);
CRI->eraseFromParent();
UpdatePHINodes(BB);
}
--- /dev/null
+; RUN: sed -e s/.T1:// %s | not llvm-as -disable-output 2>&1 | FileCheck --check-prefix=CHECK1 %s
+; RUN: sed -e s/.T2:// %s | not llvm-as -disable-output 2>&1 | FileCheck --check-prefix=CHECK2 %s
+; RUN: sed -e s/.T3:// %s | not llvm-as -disable-output 2>&1 | FileCheck --check-prefix=CHECK3 %s
+; RUN: sed -e s/.T4:// %s | not llvm-as -disable-output 2>&1 | FileCheck --check-prefix=CHECK4 %s
+; RUN: sed -e s/.T5:// %s | not llvm-as -disable-output 2>&1 | FileCheck --check-prefix=CHECK5 %s
+; RUN: sed -e s/.T6:// %s | not llvm-as -disable-output 2>&1 | FileCheck --check-prefix=CHECK6 %s
+
+;T1: define void @f() {
+;T1: entry:
+;T1: ; operator constraint requires an operator
+;T1: catchret undef to label %entry
+;T1: ; CHECK1: [[@LINE-1]]:15: error: Catchpad value required in this position
+;T1: }
+
+;T2: define void @f() {
+;T2: entry:
+;T2: %x = cleanuppad []
+;T2: ; catchret's first operand's operator must be catchpad
+;T2: catchret %x to label %entry
+;T2: ; CHECK2: [[@LINE-1]]:15: error: '%x' is not a catchpad
+;T2: }
+
+;T3: define void @f() {
+;T3: entry:
+;T3: ; catchret's first operand's operator must be catchpad
+;T3: ; (forward reference case)
+;T3: catchret %x to label %next
+;T3: ; CHECK3: [[@LINE-1]]:15: error: '%x' is not a catchpad
+;T3: next:
+;T3: %x = cleanuppad []
+;T3: ret void
+;T3: }
+
+;T4: define void @f() {
+;T4: entry:
+;T4: ; operator constraint requires an operator
+;T4: cleanupret undef unwind label %entry
+;T4: ; CHECK4: [[@LINE-1]]:17: error: Cleanuppad value required in this position
+;T4: }
+
+;T5: define void @f() {
+;T5: entry:
+;T5: %x = catchpad []
+;T5: to label %next unwind label %entry
+;T5: next:
+;T5: ; cleanupret first operand's operator must be cleanuppad
+;T5: cleanupret %x unwind to caller
+;T5: ; CHECK5: [[@LINE-1]]:17: error: '%x' is not a cleanuppad
+;T5: }
+
+;T6: define void @f() {
+;T6: entry:
+;T6: ; cleanupret's first operand's operator must be cleanuppad
+;T6: ; (forward reference case)
+;T6: cleanupret %x unwind label %next
+;T6: ; CHECK6: [[@LINE-1]]:17: error: '%x' is not a cleanuppad
+;T6: next:
+;T6: %x = catchpad [] to label %entry unwind label %next
+;T6: }
; CHECK: merge:
; CHECK-NOT: = phi
%phi = phi i32 [ %x, %left ], [ %y, %right ]
- %cp = catchpad token [] to label %catch unwind label %catchend
+ %cp = catchpad [] to label %catch unwind label %catchend
catch:
; CHECK: catch:
; CHECK: [[Reload:%[^ ]+]] = load i32, i32* [[Slot]]
; CHECK-NEXT: call void @h(i32 [[Reload]])
call void @h(i32 %phi)
- catchret token %cp to label %exit
+ catchret %cp to label %exit
catchend:
catchendpad unwind to caller
merge.inner:
; CHECK: merge.inner:
; CHECK-NOT: = phi
- ; CHECK: catchpad token
+ ; CHECK: catchpad []
%x = phi i32 [ 1, %left ], [ 2, %right ]
- %cpinner = catchpad token [] to label %catch.inner unwind label %catchend.inner
+ %cpinner = catchpad [] to label %catch.inner unwind label %catchend.inner
catch.inner:
; Need just one store here because only %y is affected
to label %catchret.inner unwind label %merge.outer
catchret.inner:
- catchret token %cpinner to label %exit
+ catchret %cpinner to label %exit
catchend.inner:
catchendpad unwind label %merge.outer
merge.outer:
; CHECK: merge.outer:
; CHECK-NOT: = phi
- ; CHECK: [[CatchPad:%[^ ]+]] = catchpad token
+ ; CHECK: [[CatchPad:%[^ ]+]] = catchpad []
%y = phi i32 [ %x, %catchend.inner ], [ %z, %catch.inner ]
- %cpouter = catchpad token [] to label %catch.outer unwind label %catchend.outer
+ %cpouter = catchpad [] to label %catch.outer unwind label %catchend.outer
catchend.outer:
catchendpad unwind to caller
; CHECK: catch.outer:
; CHECK-DAG: load i32, i32* [[Slot1]]
; CHECK-DAG: load i32, i32* [[Slot2]]
- ; CHECK: catchret token [[CatchPad]] to label
+ ; CHECK: catchret [[CatchPad]] to label
call void @h(i32 %x)
call void @h(i32 %y)
- catchret token %cpouter to label %exit
+ catchret %cpouter to label %exit
exit:
ret void
to label %exit unwind label %catchpad
catchpad:
- %cp = catchpad token [] to label %catch unwind label %catchend
+ %cp = catchpad [] to label %catch unwind label %catchend
catch:
; Need to reload %B here
; CHECK: %phi = phi i32 [ [[ReloadX]], %left ]
%phi = phi i32 [ %x, %left ], [ 42, %right ]
call void @h(i32 %phi)
- catchret token %cp to label %exit
+ catchret %cp to label %exit
catchend:
catchendpad unwind to caller
to label %join unwind label %catchpad.inner
catchpad.inner:
; CHECK: catchpad.inner:
- ; CHECK-NEXT: catchpad token
+ ; CHECK-NEXT: catchpad []
%phi.inner = phi i32 [ %l, %left ], [ %r, %right ]
- %cp1 = catchpad token [] to label %catch.inner unwind label %catchend.inner
+ %cp1 = catchpad [] to label %catch.inner unwind label %catchend.inner
catch.inner:
- catchret token %cp1 to label %join
+ catchret %cp1 to label %join
catchend.inner:
catchendpad unwind label %catchpad.outer
join:
to label %exit unwind label %catchpad.outer
catchpad.outer:
; CHECK: catchpad.outer:
- ; CHECK-NEXT: catchpad token
+ ; CHECK-NEXT: catchpad []
%phi.outer = phi i32 [ %phi.inner, %catchend.inner ], [ %j, %join ]
- %cp2 = catchpad token [] to label %catch.outer unwind label %catchend.outer
+ %cp2 = catchpad [] to label %catch.outer unwind label %catchend.outer
catch.outer:
; CHECK: catch.outer:
; CHECK: [[Reload:%[^ ]+]] = load i32, i32* [[Slot]]
; CHECK: call void @h(i32 [[Reload]])
call void @h(i32 %phi.outer)
- catchret token %cp2 to label %exit
+ catchret %cp2 to label %exit
catchend.outer:
catchendpad unwind to caller
exit:
cleanup:
; cleanup phi can be loaded at cleanup entry
; CHECK: cleanup:
- ; CHECK-NEXT: cleanuppad token
+ ; CHECK-NEXT: cleanuppad []
; CHECK: [[CleanupReload:%[^ ]+]] = load i32, i32* [[CleanupSlot]]
%phi.cleanup = phi i32 [ 1, %entry ], [ 2, %invoke.cont ]
- %cp = cleanuppad token []
+ %cp = cleanuppad []
%b = call i1 @i()
br i1 %b, label %left, label %right
; need store for %phi.catch
; CHECK: merge:
; CHECK-NEXT: store i32 [[CleanupReload]], i32* [[CatchSlot:%[^ ]+]]
- ; CHECK-NEXT: cleanupret token
- cleanupret token %cp unwind label %catchpad
+ ; CHECK-NEXT: cleanupret
+ cleanupret %cp unwind label %catchpad
invoke.cont2:
; need store for %phi.catch
catchpad:
; CHECK: catchpad:
- ; CHECK-NEXT: catchpad token
+ ; CHECK-NEXT: catchpad []
%phi.catch = phi i32 [ %phi.cleanup, %merge ], [ 3, %invoke.cont2 ]
- %cp2 = catchpad token [] to label %catch unwind label %catchend
+ %cp2 = catchpad [] to label %catch unwind label %catchend
catch:
; CHECK: catch:
; CHECK: [[CatchReload:%[^ ]+]] = load i32, i32* [[CatchSlot]]
; CHECK: call void @h(i32 [[CatchReload]]
call void @h(i32 %phi.catch)
- catchret token %cp2 to label %exit
+ catchret %cp2 to label %exit
catchend:
catchendpad unwind to caller
; CHECK: store i32 %x, i32* [[SpillSlot:%[^ ]+]]
; CHECK: br label %loop
to_caller:
- %cp1 = cleanuppad token []
- cleanupret token %cp1 unwind to caller
+ %cp1 = cleanuppad []
+ cleanupret %cp1 unwind to caller
loop:
invoke void @f()
to label %loop unwind label %cleanup
; CHECK: cleanup:
; CHECK: [[Load:%[^ ]+]] = load i32, i32* [[SpillSlot]]
; CHECK: call void @h(i32 [[Load]])
- %cp2 = cleanuppad token []
+ %cp2 = cleanuppad []
call void @h(i32 %x)
- cleanupret token %cp2 unwind to caller
+ cleanupret %cp2 unwind to caller
}
; CHECK-LABEL: @test7(
catchpad:
; %x phi should be eliminated
; CHECK: catchpad:
- ; CHECK-NEXT: %[[CatchPad:[^ ]+]] = catchpad token
+ ; CHECK-NEXT: %[[CatchPad:[^ ]+]] = catchpad []
%x = phi i32 [ 1, %entry ], [ 2, %invoke.cont ]
- %cp = catchpad token [] to label %catch unwind label %catchend
+ %cp = catchpad [] to label %catch unwind label %catchend
catch:
%b = call i1 @i()
br i1 %b, label %left, label %right
; Edge from %left to %join needs to be split so that
; the load of %x can be inserted *after* the catchret
; CHECK: left:
- ; CHECK-NEXT: catchret token %[[CatchPad]] to label %[[SplitLeft:[^ ]+]]
- catchret token %cp to label %join
+ ; CHECK-NEXT: catchret %[[CatchPad]] to label %[[SplitLeft:[^ ]+]]
+ catchret %cp to label %join
; CHECK: [[SplitLeft]]:
; CHECK: [[LoadX:%[^ ]+]] = load i32, i32* [[SlotX]]
; CHECK: br label %join
; the load of %y can be inserted *after* the catchret
; CHECK: right:
; CHECK: store i32 %y, i32* [[SlotY:%[^ ]+]]
- ; CHECK: catchret token %[[CatchPad]] to label %[[SplitRight:[^ ]+]]
+ ; CHECK: catchret %[[CatchPad]] to label %[[SplitRight:[^ ]+]]
%y = call i32 @g()
- catchret token %cp to label %join
+ catchret %cp to label %join
; CHECK: [[SplitRight]]:
; CHECK: [[LoadY:%[^ ]+]] = load i32, i32* [[SlotY]]
; CHECK: br label %join
ret void
cleanup1:
- ; CHECK: [[CleanupPad1:%[^ ]+]] = cleanuppad token
+ ; CHECK: [[CleanupPad1:%[^ ]+]] = cleanuppad []
; CHECK-NEXT: call void @f()
- ; CHECK-NEXT: cleanupret token [[CleanupPad1]]
- %cp0 = cleanuppad token []
+ ; CHECK-NEXT: cleanupret [[CleanupPad1]]
+ %cp0 = cleanuppad []
br label %cleanupexit
cleanup2:
- ; CHECK: cleanuppad token
+ ; CHECK: cleanuppad []
; CHECK-NEXT: call void @f()
; CHECK-NEXT: unreachable
- %cp1 = cleanuppad token []
+ %cp1 = cleanuppad []
br label %cleanupexit
cleanupexit:
call void @f()
- cleanupret token %cp0 unwind label %cleanup2
+ cleanupret %cp0 unwind label %cleanup2
}
to label %unreachable.for.entry unwind label %catch.dispatch
catch.dispatch: ; preds = %entry
- %1 = catchpad token [i8* null, i8* null] to label %catch unwind label %catchendblock
+ %1 = catchpad [i8* null, i8* null] to label %catch unwind label %catchendblock
catch: ; preds = %catch.dispatch
; CHECK: catch:
to label %unreachable unwind label %catch.dispatch.1
catch.dispatch.1: ; preds = %catch
- %2 = catchpad token [i8* null, i8* null] to label %catch.3 unwind label %catchendblock.2
+ %2 = catchpad [i8* null, i8* null] to label %catch.3 unwind label %catchendblock.2
catch.3: ; preds = %catch.dispatch.1
; CHECK: catch.3:
to label %invoke.cont unwind label %catchendblock.2
invoke.cont: ; preds = %catch.3
- catchret token %2 to label %try.cont
+ catchret %2 to label %try.cont
try.cont: ; preds = %invoke.cont
; CHECK: try.cont:
define void @cleanupret0() personality i32 (...)* @__gxx_personality_v0 {
entry:
- br label %try.cont
-
-try.cont:
invoke void @_Z3quxv() optsize
- to label %try.cont unwind label %bb
-bb:
- cleanuppad void [i7 4]
- cleanupret i8 0 unwind label %bb
+ to label %exit unwind label %pad
+pad:
+ %cp = cleanuppad [i7 4]
+ cleanupret %cp unwind to caller
+exit:
+ ret void
}
+; forward ref by name
define void @cleanupret1() personality i32 (...)* @__gxx_personality_v0 {
entry:
- br label %try.cont
-
-try.cont:
invoke void @_Z3quxv() optsize
- to label %try.cont unwind label %bb
-bb:
- cleanuppad void [i7 4]
- cleanupret void unwind label %bb
+ to label %exit unwind label %pad
+cleanup:
+ cleanupret %cp unwind label %pad
+pad:
+ %cp = cleanuppad []
+ br label %cleanup
+exit:
+ ret void
}
+; forward ref by ID
define void @cleanupret2() personality i32 (...)* @__gxx_personality_v0 {
entry:
- cleanupret i8 0 unwind to caller
+ invoke void @_Z3quxv() optsize
+ to label %exit unwind label %pad
+cleanup:
+ cleanupret %0 unwind label %pad
+pad:
+ %0 = cleanuppad []
+ br label %cleanup
+exit:
+ ret void
}
-define void @cleanupret3() personality i32 (...)* @__gxx_personality_v0 {
- cleanupret void unwind to caller
+define void @catchret0() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+ invoke void @_Z3quxv() optsize
+ to label %exit unwind label %pad
+pad:
+ %cp = catchpad [i7 4]
+ to label %catch unwind label %endpad
+catch:
+ catchret %cp to label %exit
+endpad:
+ catchendpad unwind to caller
+exit:
+ ret void
}
-define void @catchret() personality i32 (...)* @__gxx_personality_v0 {
+; forward ref by name
+define void @catchret1() personality i32 (...)* @__gxx_personality_v0 {
entry:
- br label %bb
-bb:
- catchret void to label %bb
+ invoke void @_Z3quxv() optsize
+ to label %exit unwind label %pad
+catch:
+ catchret %cp to label %exit
+pad:
+ %cp = catchpad []
+ to label %catch unwind label %endpad
+endpad:
+ catchendpad unwind to caller
+exit:
+ ret void
}
-define i8 @catchpad() personality i32 (...)* @__gxx_personality_v0 {
+; forward ref by ID
+define void @catchret2() personality i32 (...)* @__gxx_personality_v0 {
entry:
- br label %try.cont
+ invoke void @_Z3quxv() optsize
+ to label %exit unwind label %pad
+catch:
+ catchret %0 to label %exit
+pad:
+ %0 = catchpad []
+ to label %catch unwind label %endpad
+endpad:
+ catchendpad unwind to caller
+exit:
+ ret void
+}
-try.cont:
+define i8 @catchpad() personality i32 (...)* @__gxx_personality_v0 {
+entry:
invoke void @_Z3quxv() optsize
to label %exit unwind label %bb2
-bb:
- catchret token %cbv to label %exit
-
-exit:
- ret i8 0
bb2:
- %cbv = catchpad token [i7 4] to label %bb unwind label %bb3
+ catchpad [i7 4] to label %exit unwind label %bb3
bb3:
catchendpad unwind to caller
+exit:
+ ret i8 0
}
define void @terminatepad0() personality i32 (...)* @__gxx_personality_v0 {
invoke void @_Z3quxv() optsize
to label %try.cont unwind label %bb
bb:
- cleanuppad void [i7 4]
+ cleanuppad [i7 4]
ret void
}
projects / oota-llvm.git / commitdiff