#include "llvm/ADT/DenseMap.h"
namespace llvm {
+class AllocaInst;
class BasicBlock;
class Constant;
class Function;
/// localescape index of the 32-bit EH registration node. Set by
/// WinEHStatePass and used indirectly by SEH filter functions of the parent.
int EHRegNodeEscapeIndex = INT_MAX;
+ const AllocaInst *EHRegNode = nullptr;
+ int EHRegNodeFrameIndex = INT_MAX;
WinEHFuncInfo() {}
};
OS.EmitValue(create32bitRef(HT.Handler), 4);
if (shouldEmitPersonality) {
- MCSymbol *ParentFrameOffset =
- Asm->OutContext.getOrCreateParentFrameOffsetSymbol(
- GlobalValue::getRealLinkageName(HT.Handler->getName()));
- const MCSymbolRefExpr *ParentFrameOffsetRef = MCSymbolRefExpr::create(
- ParentFrameOffset, Asm->OutContext);
- OS.EmitValue(ParentFrameOffsetRef, 4); // ParentFrameOffset
+ if (FuncInfo.CatchHandlerParentFrameObjOffset.empty()) {
+ // With the new IR, this is always 16 + 8 + getMaxCallFrameSize().
+ // Keep this in sync with X86FrameLowering::emitPrologue.
+ int ParentFrameOffset =
+ 16 + 8 + MF->getFrameInfo()->getMaxCallFrameSize();
+ OS.EmitIntValue(ParentFrameOffset, 4); // ParentFrameOffset
+ } else {
+ MCSymbol *ParentFrameOffset =
+ Asm->OutContext.getOrCreateParentFrameOffsetSymbol(
+ GlobalValue::getRealLinkageName(HT.Handler->getName()));
+ const MCSymbolRefExpr *ParentFrameOffsetRef =
+ MCSymbolRefExpr::create(ParentFrameOffset, Asm->OutContext);
+ OS.EmitValue(ParentFrameOffsetRef, 4); // ParentFrameOffset
+ }
}
}
}
// stack frame indexes.
unsigned MinCSFrameIndex, MaxCSFrameIndex;
- // Save and Restore blocks of the current function.
- MachineBasicBlock *SaveBlock;
+ // Save and Restore blocks of the current function. Typically there is a
+ // single save block, unless Windows EH funclets are involved.
+ SmallVector<MachineBasicBlock *, 1> SaveBlocks;
SmallVector<MachineBasicBlock *, 4> RestoreBlocks;
// Flag to control whether to use the register scavenger to resolve
// Use the points found by shrink-wrapping, if any.
if (MFI->getSavePoint()) {
- SaveBlock = MFI->getSavePoint();
+ SaveBlocks.push_back(MFI->getSavePoint());
assert(MFI->getRestorePoint() && "Both restore and save must be set");
MachineBasicBlock *RestoreBlock = MFI->getRestorePoint();
// If RestoreBlock does not have any successor and is not a return block
}
// Save refs to entry and return blocks.
- SaveBlock = Fn.begin();
- for (MachineFunction::iterator MBB = Fn.begin(), E = Fn.end();
- MBB != E; ++MBB)
- if (isReturnBlock(MBB))
- RestoreBlocks.push_back(MBB);
-
- return;
+ SaveBlocks.push_back(Fn.begin());
+ for (MachineBasicBlock &MBB : Fn) {
+ if (MBB.isEHFuncletEntry())
+ SaveBlocks.push_back(&MBB);
+ if (isReturnBlock(&MBB))
+ RestoreBlocks.push_back(&MBB);
+ }
}
/// StackObjSet - A set of stack object indexes
}
delete RS;
+ SaveBlocks.clear();
RestoreBlocks.clear();
return true;
}
MachineBasicBlock::iterator I;
// Spill using target interface.
- I = SaveBlock->begin();
- if (!TFI->spillCalleeSavedRegisters(*SaveBlock, I, CSI, TRI)) {
- for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
- // Insert the spill to the stack frame.
- unsigned Reg = CSI[i].getReg();
- const TargetRegisterClass *RC = TRI->getMinimalPhysRegClass(Reg);
- TII.storeRegToStackSlot(*SaveBlock, I, Reg, true, CSI[i].getFrameIdx(),
- RC, TRI);
+ for (MachineBasicBlock *SaveBlock : SaveBlocks) {
+ I = SaveBlock->begin();
+ if (!TFI->spillCalleeSavedRegisters(*SaveBlock, I, CSI, TRI)) {
+ for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
+ // Insert the spill to the stack frame.
+ unsigned Reg = CSI[i].getReg();
+ const TargetRegisterClass *RC = TRI->getMinimalPhysRegClass(Reg);
+ TII.storeRegToStackSlot(*SaveBlock, I, Reg, true, CSI[i].getFrameIdx(),
+ RC, TRI);
+ }
}
+ // Update the live-in information of all the blocks up to the save point.
+ updateLiveness(Fn);
}
- // Update the live-in information of all the blocks up to the save point.
- updateLiveness(Fn);
// Restore using target interface.
for (MachineBasicBlock *MBB : RestoreBlocks) {
const TargetFrameLowering &TFI = *Fn.getSubtarget().getFrameLowering();
// Add prologue to the function...
- TFI.emitPrologue(Fn, *SaveBlock);
+ for (MachineBasicBlock *SaveBlock : SaveBlocks)
+ TFI.emitPrologue(Fn, *SaveBlock);
// Add epilogue to restore the callee-save registers in each exiting block.
for (MachineBasicBlock *RestoreBlock : RestoreBlocks)
// we've been asked for it. This, when linked with a runtime with support
// for segmented stacks (libgcc is one), will result in allocating stack
// space in small chunks instead of one large contiguous block.
- if (Fn.shouldSplitStack())
- TFI.adjustForSegmentedStacks(Fn, *SaveBlock);
+ if (Fn.shouldSplitStack()) {
+ for (MachineBasicBlock *SaveBlock : SaveBlocks)
+ TFI.adjustForSegmentedStacks(Fn, *SaveBlock);
+ }
// Emit additional code that is required to explicitly handle the stack in
// HiPE native code (if needed) when loaded in the Erlang/OTP runtime. The
// different conditional check and another BIF for allocating more stack
// space.
if (Fn.getFunction()->getCallingConv() == CallingConv::HiPE)
- TFI.adjustForHiPEPrologue(Fn, *SaveBlock);
+ for (MachineBasicBlock *SaveBlock : SaveBlocks)
+ TFI.adjustForHiPEPrologue(Fn, *SaveBlock);
}
/// replaceFrameIndices - Replace all MO_FrameIndex operands with physical
for (WinEHHandlerType &H : TBME.HandlerArray)
if (const auto *BB = dyn_cast<BasicBlock>(H.Handler))
H.HandlerMBB = MBBMap[BB];
+ // If there's an explicit EH registration node on the stack, record its
+ // frame index.
+ if (EHInfo.EHRegNode && EHInfo.EHRegNode->getParent()->getParent() == Fn) {
+ assert(StaticAllocaMap.count(EHInfo.EHRegNode));
+ EHInfo.EHRegNodeFrameIndex = StaticAllocaMap[EHInfo.EHRegNode];
+ }
}
// Copy the state numbers to LandingPadInfo for the current function, which
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
+#include "llvm/CodeGen/WinEHFuncInfo.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Function.h"
#include "llvm/MC/MCAsmInfo.h"
MFI->hasVarSizedObjects() ||
MFI->isFrameAddressTaken() || MFI->hasOpaqueSPAdjustment() ||
MF.getInfo<X86MachineFunctionInfo>()->getForceFramePointer() ||
- MMI.callsUnwindInit() || MMI.callsEHReturn() ||
+ MMI.callsUnwindInit() || MMI.hasEHFunclets() || MMI.callsEHReturn() ||
MFI->hasStackMap() || MFI->hasPatchPoint());
}
uint64_t NumBytes = 0;
int stackGrowth = -SlotSize;
- if (HasFP) {
+ if (MBB.isEHFuncletEntry()) {
+ assert(STI.isOSWindows() && "funclets only supported on Windows");
+
+ // Set up the FramePtr and BasePtr physical registers using the address
+ // passed as EBP or RDX by the MSVC EH runtime.
+ if (STI.is32Bit()) {
+ MBBI = restoreWin32EHFrameAndBasePtr(MBB, MBBI, DL);
+ } else {
+ // FIXME: Add SEH directives.
+ NeedsWinCFI = false;
+ // Immediately spill RDX into the home slot. The runtime cares about this.
+ unsigned RDX = Uses64BitFramePtr ? X86::RDX : X86::EDX;
+ // MOV64mr %rdx, 16(%rsp)
+ unsigned MOVmr = Uses64BitFramePtr ? X86::MOV64mr : X86::MOV32mr;
+ addRegOffset(BuildMI(MBB, MBBI, DL, TII.get(MOVmr)),
+ StackPtr, true, 16)
+ .addReg(RDX)
+ .setMIFlag(MachineInstr::FrameSetup);
+ // PUSH64r %rbp
+ BuildMI(MBB, MBBI, DL, TII.get(Is64Bit ? X86::PUSH64r : X86::PUSH32r))
+ .addReg(MachineFramePtr, RegState::Kill)
+ .setMIFlag(MachineInstr::FrameSetup);
+ // MOV64rr %rdx, %rbp
+ unsigned MOVrr = Uses64BitFramePtr ? X86::MOV64rr : X86::MOV32rr;
+ BuildMI(MBB, MBBI, DL, TII.get(MOVrr), FramePtr)
+ .addReg(RDX)
+ .setMIFlag(MachineInstr::FrameSetup);
+ assert(!TRI->hasBasePointer(MF) &&
+ "x64 funclets with base ptrs not yet implemented");
+ }
+
+ // For EH funclets, only allocate enough space for outgoing calls.
+ NumBytes = MFI->getMaxCallFrameSize();
+ } else if (HasFP) {
// Calculate required stack adjustment.
uint64_t FrameSize = StackSize - SlotSize;
// If required, include space for extra hidden slot for stashing base pointer.
// it recovers the frame pointer from the base pointer rather than the
// other way around.
unsigned Opm = Uses64BitFramePtr ? X86::MOV64mr : X86::MOV32mr;
- unsigned IgnoredFrameReg;
- addRegOffset(BuildMI(MBB, MBBI, DL, TII.get(Opm)), BasePtr, true,
- getFrameIndexReference(MF, X86FI->getSEHFramePtrSaveIndex(),
- IgnoredFrameReg))
+ unsigned UsedReg;
+ int Offset =
+ getFrameIndexReference(MF, X86FI->getSEHFramePtrSaveIndex(), UsedReg);
+ assert(UsedReg == BasePtr);
+ addRegOffset(BuildMI(MBB, MBBI, DL, TII.get(Opm)), UsedReg, true, Offset)
.addReg(FramePtr)
.setMIFlag(MachineInstr::FrameSetup);
}
return !MF.getTarget().getMCAsmInfo()->usesWindowsCFI() || hasFP(MF);
}
+static bool isFuncletReturnInstr(MachineInstr *MI) {
+ switch (MI->getOpcode()) {
+ case X86::CATCHRET:
+ case X86::CATCHRET64:
+ return true;
+ default:
+ return false;
+ }
+ llvm_unreachable("impossible");
+}
+
void X86FrameLowering::emitEpilogue(MachineFunction &MF,
MachineBasicBlock &MBB) const {
const MachineFrameInfo *MFI = MF.getFrameInfo();
unsigned CSSize = X86FI->getCalleeSavedFrameSize();
uint64_t NumBytes = 0;
- if (hasFP(MF)) {
+ if (isFuncletReturnInstr(MBBI)) {
+ NumBytes = MFI->getMaxCallFrameSize();
+
+ if (Is64Bit) {
+ assert(hasFP(MF) && "win64 EH funclets without FP not yet implemented");
+ // POP64r %rbp
+ BuildMI(MBB, MBBI, DL, TII.get(Is64Bit ? X86::POP64r : X86::POP32r),
+ MachineFramePtr);
+ }
+ } else if (hasFP(MF)) {
// Calculate required stack adjustment.
uint64_t FrameSize = StackSize - SlotSize;
NumBytes = FrameSize - CSSize;
const TargetRegisterInfo *TRI) const {
DebugLoc DL = MBB.findDebugLoc(MI);
+ // Don't save CSRs in 32-bit EH funclets. The caller saves EBX, EBP, ESI, EDI
+ // for us, and there are no XMM CSRs on Win32.
+ if (MBB.isEHFuncletEntry() && STI.is32Bit() && STI.isOSWindows())
+ return true;
+
// Push GPRs. It increases frame size.
unsigned Opc = STI.is64Bit() ? X86::PUSH64r : X86::PUSH32r;
for (unsigned i = CSI.size(); i != 0; --i) {
if (CSI.empty())
return false;
+ // Don't restore CSRs in 32-bit EH funclets. Matches
+ // spillCalleeSavedRegisters.
+ if (isFuncletReturnInstr(MI) && STI.is32Bit() && STI.isOSWindows())
+ return true;
+
DebugLoc DL = MBB.findDebugLoc(MI);
// Reload XMMs from stack frame.
}
// Spill the BasePtr if it's used.
- if (TRI->hasBasePointer(MF))
+ if (TRI->hasBasePointer(MF)) {
SavedRegs.set(TRI->getBaseRegister());
+
+ // Allocate a spill slot for EBP if we have a base pointer and EH funclets.
+ if (MF.getMMI().hasEHFunclets()) {
+ int FI = MFI->CreateSpillStackObject(SlotSize, SlotSize);
+ X86FI->setHasSEHFramePtrSave(true);
+ X86FI->setSEHFramePtrSaveIndex(FI);
+ }
+ }
}
static bool
// safe to insert the epilogue here.
return !terminatorsNeedFlagsAsInput(MBB);
}
+
+MachineBasicBlock::iterator X86FrameLowering::restoreWin32EHFrameAndBasePtr(
+ MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
+ DebugLoc DL) const {
+ assert(STI.isTargetWindowsMSVC() && "funclets only supported in MSVC env");
+ assert(STI.isTargetWin32() && "EBP/ESI restoration only required on win32");
+ assert(STI.is32Bit() && !Uses64BitFramePtr &&
+ "restoring EBP/ESI on non-32-bit target");
+
+ MachineFunction &MF = *MBB.getParent();
+ unsigned FramePtr = TRI->getFrameRegister(MF);
+ unsigned BasePtr = TRI->getBaseRegister();
+ MachineModuleInfo &MMI = MF.getMMI();
+ const Function *Fn = MF.getFunction();
+ WinEHFuncInfo &FuncInfo = MMI.getWinEHFuncInfo(Fn);
+ X86MachineFunctionInfo *X86FI = MF.getInfo<X86MachineFunctionInfo>();
+ MachineFrameInfo *MFI = MF.getFrameInfo();
+
+ // FIXME: Don't set FrameSetup flag in catchret case.
+
+ int FI = FuncInfo.EHRegNodeFrameIndex;
+ unsigned UsedReg;
+ int EHRegOffset = getFrameIndexReference(MF, FI, UsedReg);
+ int EHRegSize = MFI->getObjectSize(FI);
+ int EndOffset = -EHRegOffset - EHRegSize;
+ assert(EndOffset >= 0 &&
+ "end of registration object above normal EBP position!");
+ if (UsedReg == FramePtr) {
+ // ADD $offset, %ebp
+ assert(UsedReg == FramePtr);
+ unsigned ADDri = getADDriOpcode(false, EndOffset);
+ BuildMI(MBB, MBBI, DL, TII.get(ADDri), FramePtr)
+ .addReg(FramePtr)
+ .addImm(EndOffset)
+ .setMIFlag(MachineInstr::FrameSetup)
+ ->getOperand(3)
+ .setIsDead();
+ } else {
+ assert(UsedReg == BasePtr);
+ // LEA offset(%ebp), %esi
+ addRegOffset(BuildMI(MBB, MBBI, DL, TII.get(X86::LEA32r), BasePtr),
+ FramePtr, false, EndOffset)
+ .setMIFlag(MachineInstr::FrameSetup);
+ // MOV32mr SavedEBPOffset(%esi), %ebp
+ assert(X86FI->getHasSEHFramePtrSave());
+ int Offset =
+ getFrameIndexReference(MF, X86FI->getSEHFramePtrSaveIndex(), UsedReg);
+ assert(UsedReg == BasePtr);
+ addRegOffset(BuildMI(MBB, MBBI, DL, TII.get(X86::MOV32mr)), UsedReg, true,
+ Offset)
+ .addReg(FramePtr)
+ .setMIFlag(MachineInstr::FrameSetup);
+ }
+ return MBBI;
+}
MachineBasicBlock::iterator MBBI,
DebugLoc DL, int64_t Offset,
bool InEpilogue) const;
+
+ /// Sets up EBP and optionally ESI based on the incoming EBP value. Only
+ /// needed for 32-bit. Used in funclet prologues and at catchret destinations.
+ MachineBasicBlock::iterator
+ restoreWin32EHFrameAndBasePtr(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator MBBI,
+ DebugLoc DL) const;
};
} // End llvm namespace
}
-let isTerminator = 1, isBarrier = 1, hasCtrlDep = 1, isCodeGenOnly = 1 in {
+let isTerminator = 1, isBarrier = 1, hasCtrlDep = 1, isCodeGenOnly = 1, isReturn = 1 in {
def CATCHRET : I<0xC3, RawFrm, (outs), (ins GR32:$addr),
"ret{l}\t# CATCHRET",
[(X86catchret GR32:$addr)], IIC_RET>, Sched<[WriteJumpLd]>;
break;
}
- case X86::CATCHRET: {
+ case X86::CATCHRET:
+ case X86::CATCHRET64: {
OutMI = MCInst();
OutMI.setOpcode(getRetOpcode(AsmPrinter.getSubtarget()));
break;
WinEHFuncInfo &FuncInfo =
*(MMI ? &MMI->getWinEHFuncInfo(&F) : FuncInfoPtr.get());
+ FuncInfo.EHRegNode = RegNode;
+
switch (Personality) {
default: llvm_unreachable("unexpected personality function");
case EHPersonality::MSVC_CXX:
// Insert calls to llvm.x86.seh.restoreframe at catchret destinations.
if (auto *CR = dyn_cast<CatchReturnInst>(BB.getTerminator())) {
- //llvm::errs() << "BB: " << BB << '\n';
- //llvm::errs() << "CR->getSuccessor(): " << *CR->getSuccessor() << '\n';
- IRBuilder<> Builder(CR->getSuccessor()->begin());
+ Instruction *Start = CR->getSuccessor()->begin();
+ assert(!isa<PHINode>(Start) &&
+ "winehprepare failed to demote phi after catchret");
+ if (match(Start, m_Intrinsic<Intrinsic::x86_seh_restoreframe>()))
+ continue;
+ IRBuilder<> Builder(Start);
Builder.CreateCall(RestoreFrame, {});
}
}
--- /dev/null
+; RUN: llc -mtriple=i686-pc-windows-msvc < %s | FileCheck --check-prefix=X86 %s
+; RUN: llc -mtriple=x86_64-pc-windows-msvc < %s | FileCheck --check-prefix=X64 %s
+
+%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
+%eh.CatchableType = type { i32, i8*, i32, i32, i32, i32, i8* }
+%eh.CatchableTypeArray.1 = type { i32, [1 x %eh.CatchableType*] }
+%eh.ThrowInfo = type { i32, i8*, i8*, i8* }
+%eh.CatchHandlerType = type { i32, i8* }
+
+$"\01??_R0H@8" = comdat any
+
+@"\01??_7type_info@@6B@" = external constant i8*
+@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
+
+@llvm.eh.handlertype.H.0 = private unnamed_addr constant %eh.CatchHandlerType { i32 0, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*) }, section "llvm.metadata"
+@llvm.eh.handlertype.H.1 = private unnamed_addr constant %eh.CatchHandlerType { i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*) }, section "llvm.metadata"
+
+declare i32 @getint()
+declare void @useints(...)
+declare void @f(i32 %p)
+declare i32 @__CxxFrameHandler3(...)
+
+define i32 @try_catch_catch() personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
+entry:
+ %a = call i32 @getint()
+ %b = call i32 @getint()
+ %c = call i32 @getint()
+ %d = call i32 @getint()
+ call void (...) @useints(i32 %a, i32 %b, i32 %c, i32 %d)
+ invoke void @f(i32 1)
+ to label %try.cont unwind label %catch.dispatch
+
+catch.dispatch: ; preds = %entry
+ %0 = catchpad [%eh.CatchHandlerType* @llvm.eh.handlertype.H.0, i8* null]
+ to label %catch unwind label %catchendblock
+
+catch:
+ invoke void @f(i32 2)
+ to label %invoke.cont.2 unwind label %catchendblock
+
+invoke.cont.2: ; preds = %catch
+ catchret %0 to label %try.cont
+
+try.cont: ; preds = %entry, %invoke.cont.2, %invoke.cont.3
+ ret i32 0
+
+catchendblock: ; preds = %catch,
+ catchendpad unwind to caller
+}
+
+; X86-LABEL: _try_catch_catch:
+; X86: pushl %ebp
+; X86: movl %esp, %ebp
+; X86: pushl %ebx
+; X86: pushl %edi
+; X86: pushl %esi
+; X86: subl ${{[0-9]+}}, %esp
+; X86: calll _getint
+; X86: calll _getint
+; X86: calll _getint
+; X86: calll _getint
+; X86: calll _useints
+; X86: movl $0, -{{[0-9]+}}(%ebp)
+; X86: movl $1, (%esp)
+; X86: calll _f
+; X86: [[contbb:LBB0_[0-9]+]]:
+; X86: movl -{{[0-9]+}}(%ebp), %esp
+; X86: addl ${{[0-9]+}}, %esp
+; X86: popl %esi
+; X86: popl %edi
+; X86: popl %ebx
+; X86: popl %ebp
+; X86: retl
+
+; X86: [[catch1bb:LBB0_[0-9]+]]: # %catch{{$}}
+; X86-NOT: pushl
+; X86: addl $12, %ebp
+; X86: subl $16, %esp
+; X86: movl $1, -{{[0-9]+}}(%ebp)
+; X86: movl $2, (%esp)
+; X86: calll _f
+; X86: movl $[[contbb]], %eax
+; X86-NEXT: addl $16, %esp
+; X86-NOT: popl
+; X86-NEXT: retl
+
+; X86: L__ehtable$try_catch_catch:
+; X86: $handlerMap$0$try_catch_catch:
+; X86: .long 0
+; X86: .long "??_R0H@8"
+; X86: .long 0
+; X86: .long [[catch1bb]]
+
+; X64-LABEL: try_catch_catch:
+; X64: pushq %rbp
+; X64: .seh_pushreg 5
+; X64: pushq %rsi
+; X64: .seh_pushreg 6
+; X64: pushq %rdi
+; X64: .seh_pushreg 7
+; X64: pushq %rbx
+; X64: .seh_pushreg 3
+; X64: subq $40, %rsp
+; X64: .seh_stackalloc 40
+; X64: leaq 32(%rsp), %rbp
+; X64: .seh_setframe 5, 32
+; X64: callq getint
+; X64: callq getint
+; X64: callq getint
+; X64: callq getint
+; X64: callq useints
+; X64: movl $1, %ecx
+; X64: callq f
+; X64: [[contbb:\.LBB0_[0-9]+]]:
+; X64: addq $40, %rsp
+; X64: popq %rbp
+; X64: retq
+
+; X64: [[catch1bb:\.LBB0_[0-9]+]]: # %catch{{$}}
+; X64: movq %rdx, 16(%rsp)
+; X64: pushq %rbp
+; X64: movq %rdx, %rbp
+; X64: subq $32, %rsp
+; X64: movl $2, %ecx
+; X64: callq f
+; X64: leaq [[contbb]](%rip), %rax
+; X64: addq $32, %rsp
+; X64: popq %rbp
+; X64: retq
+
+; X64: $handlerMap$0$try_catch_catch:
+; X64: .long 0
+; X64: .long "??_R0H@8"@IMGREL
+; X64: .long 0
+; X64: .long [[catch1bb]]@IMGREL
+; X64: .long 56
@llvm.eh.handlertype.H.0 = private unnamed_addr constant %eh.CatchHandlerType { i32 0, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*) }, section "llvm.metadata"
@llvm.eh.handlertype.H.1 = private unnamed_addr constant %eh.CatchHandlerType { i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*) }, section "llvm.metadata"
-declare void @f(i32 %p)
+declare void @f(i32 %p, i32* %l)
declare i32 @__CxxFrameHandler3(...)
+declare void @barrier()
define i32 @try_catch_catch() personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
entry:
- invoke void @f(i32 1)
+ %local = alloca i32
+ invoke void @f(i32 1, i32* %local)
to label %try.cont unwind label %catch.dispatch
catch.dispatch: ; preds = %entry
to label %catch unwind label %catch.dispatch.2
catch: ; preds = %catch.dispatch
- invoke void @f(i32 2)
+ ; FIXME: Remove this barrier once we add more real register allocation barriers.
+ invoke void @barrier()
+ to label %barrier.split unwind label %catchendblock
+barrier.split:
+ invoke void @f(i32 2, i32* %local)
to label %invoke.cont.2 unwind label %catchendblock
invoke.cont.2: ; preds = %catch
to label %catch.2 unwind label %catchendblock
catch.2: ; preds = %catch.dispatch.2
- invoke void @f(i32 3)
+ invoke void @f(i32 3, i32* %local)
to label %invoke.cont.3 unwind label %catchendblock
invoke.cont.3: ; preds = %catch.2
; X86-LABEL: _try_catch_catch:
; X86: movl $0, -{{[0-9]+}}(%ebp)
-; X86: movl $1, (%esp)
+; X86: leal -[[local_offs:[0-9]+]](%ebp), %[[addr_reg:[a-z]+]]
+; X86-DAG: movl %[[addr_reg]], 4(%esp)
+; X86-DAG: movl $1, (%esp)
; X86: calll _f
; X86: [[contbb:LBB0_[0-9]+]]:
; X86: movl -{{[0-9]+}}(%ebp), %esp
; X86: retl
; X86: [[catch1bb:LBB0_[0-9]+]]: # %catch{{$}}
+; X86: addl $12, %ebp
+; X86: subl $8, %esp
+; X86: calll _barrier
; X86: movl $1, -{{[0-9]+}}(%ebp)
-; X86: movl $2, (%esp)
+; X86: leal -[[local_offs]](%ebp), %[[addr_reg:[a-z]+]]
+; X86-DAG: movl %[[addr_reg]], 4(%esp)
+; X86-DAG: movl $2, (%esp)
; X86: calll _f
; X86: movl $[[contbb]], %eax
+; X86-NEXT: addl $8, %esp
; X86-NEXT: retl
; X86: [[catch2bb:LBB0_[0-9]+]]: # %catch.2{{$}}
+; X86: addl $12, %ebp
+; X86: subl $8, %esp
; X86: movl $1, -{{[0-9]+}}(%ebp)
-; X86: movl $3, (%esp)
+; X86: leal -[[local_offs]](%ebp), %[[addr_reg:[a-z]+]]
+; X86-DAG: movl %[[addr_reg]], 4(%esp)
+; X86-DAG: movl $3, (%esp)
; X86: calll _f
; X86: movl $[[contbb]], %eax
+; X86-NEXT: addl $8, %esp
; X86-NEXT: retl
; X86: L__ehtable$try_catch_catch:
; X86: .long [[catch2bb]]
; X64-LABEL: try_catch_catch:
-; X64: movl $1, %ecx
+; X64: pushq %rbp
+; X64: .seh_pushreg 5
+; X64: subq $48, %rsp
+; X64: .seh_stackalloc 48
+; X64: leaq 48(%rsp), %rbp
+; X64: .seh_setframe 5, 48
+; X64-DAG: leaq -[[local_offs:[0-9]+]](%rbp), %rdx
+; X64-DAG: movl $1, %ecx
; X64: callq f
; X64: [[contbb:\.LBB0_[0-9]+]]:
+; X64: addq $48, %rsp
+; X64: popq %rbp
; X64: retq
; X64: [[catch1bb:\.LBB0_[0-9]+]]: # %catch{{$}}
-; X64: movl $2, %ecx
+; X64: movq %rdx, 16(%rsp)
+; X64: pushq %rbp
+; X64: movq %rdx, %rbp
+; X64: subq $32, %rsp
+; X64-DAG: leaq -[[local_offs]](%rbp), %rdx
+; X64-DAG: movl $2, %ecx
; X64: callq f
; X64: leaq [[contbb]](%rip), %rax
+; X64: addq $32, %rsp
+; X64: popq %rbp
; X64: retq
; X64: [[catch2bb:\.LBB0_[0-9]+]]: # %catch.2{{$}}
-; X64: movl $3, %ecx
+; X64: movq %rdx, 16(%rsp)
+; X64: pushq %rbp
+; X64: movq %rdx, %rbp
+; X64: subq $32, %rsp
+; X64-DAG: leaq -[[local_offs]](%rbp), %rdx
+; X64-DAG: movl $3, %ecx
; X64: callq f
; X64: leaq [[contbb]](%rip), %rax
+; X64: addq $32, %rsp
+; X64: popq %rbp
; X64: retq
-; FIXME: Get rid of these parent_frame_offset things below. They are leftover
-; from our IR outlining strategy.
; X64: $handlerMap$0$try_catch_catch:
; X64: .long 0
; X64: .long "??_R0H@8"@IMGREL
; X64: .long 0
; X64: .long [[catch1bb]]@IMGREL
-; X64 .long .Lcatch$parent_frame_offset
+; X64: .long 56
; X64: .long 0
; X64: .long "??_R0H@8"@IMGREL
; X64: .long 0
; X64: .long [[catch2bb]]@IMGREL
-; X64 .long .Lcatch.2$parent_frame_offset
+; X64: .long 56
projects / oota-llvm.git / commitdiff