#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/IndexedMap.h"
+#include "llvm/ADT/iterator_range.h"
+#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBundle.h"
-#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetRegisterInfo.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
#include <vector>
namespace llvm {
};
private:
- const TargetMachine &TM;
+ const MachineFunction *MF;
Delegate *TheDelegate;
/// IsSSA - True when the machine function is in SSA form and virtual
/// PhysRegUseDefLists - This is an array of the head of the use/def list for
/// physical registers.
- MachineOperand **PhysRegUseDefLists;
+ std::vector<MachineOperand *> PhysRegUseDefLists;
/// getRegUseDefListHead - Return the head pointer for the register use/def
/// list for the specified virtual or physical register.
MachineRegisterInfo(const MachineRegisterInfo&) LLVM_DELETED_FUNCTION;
void operator=(const MachineRegisterInfo&) LLVM_DELETED_FUNCTION;
public:
- explicit MachineRegisterInfo(const TargetMachine &TM);
- ~MachineRegisterInfo();
+ explicit MachineRegisterInfo(const MachineFunction *MF);
const TargetRegisterInfo *getTargetRegisterInfo() const {
- return TM.getRegisterInfo();
+ return MF->getSubtarget().getRegisterInfo();
}
void resetDelegate(Delegate *delegate) {
// notifications, we will need to change to using a list.
assert(TheDelegate == delegate &&
"Only the current delegate can perform reset!");
- TheDelegate = 0;
+ TheDelegate = nullptr;
}
void setDelegate(Delegate *delegate) {
reg_iterator reg_begin(unsigned RegNo) const {
return reg_iterator(getRegUseDefListHead(RegNo));
}
- static reg_iterator reg_end() { return reg_iterator(0); }
+ static reg_iterator reg_end() { return reg_iterator(nullptr); }
+
+ inline iterator_range<reg_iterator> reg_operands(unsigned Reg) const {
+ return iterator_range<reg_iterator>(reg_begin(Reg), reg_end());
+ }
/// reg_instr_iterator/reg_instr_begin/reg_instr_end - Walk all defs and uses
/// of the specified register, stepping by MachineInstr.
reg_instr_iterator reg_instr_begin(unsigned RegNo) const {
return reg_instr_iterator(getRegUseDefListHead(RegNo));
}
- static reg_instr_iterator reg_instr_end() { return reg_instr_iterator(0); }
+ static reg_instr_iterator reg_instr_end() {
+ return reg_instr_iterator(nullptr);
+ }
+
+ inline iterator_range<reg_instr_iterator>
+ reg_instructions(unsigned Reg) const {
+ return iterator_range<reg_instr_iterator>(reg_instr_begin(Reg),
+ reg_instr_end());
+ }
/// reg_bundle_iterator/reg_bundle_begin/reg_bundle_end - Walk all defs and uses
/// of the specified register, stepping by bundle.
reg_bundle_iterator reg_bundle_begin(unsigned RegNo) const {
return reg_bundle_iterator(getRegUseDefListHead(RegNo));
}
- static reg_bundle_iterator reg_bundle_end() { return reg_bundle_iterator(0); }
+ static reg_bundle_iterator reg_bundle_end() {
+ return reg_bundle_iterator(nullptr);
+ }
+
+ inline iterator_range<reg_bundle_iterator> reg_bundles(unsigned Reg) const {
+ return iterator_range<reg_bundle_iterator>(reg_bundle_begin(Reg),
+ reg_bundle_end());
+ }
/// reg_empty - Return true if there are no instructions using or defining the
/// specified register (it may be live-in).
reg_nodbg_iterator reg_nodbg_begin(unsigned RegNo) const {
return reg_nodbg_iterator(getRegUseDefListHead(RegNo));
}
- static reg_nodbg_iterator reg_nodbg_end() { return reg_nodbg_iterator(0); }
+ static reg_nodbg_iterator reg_nodbg_end() {
+ return reg_nodbg_iterator(nullptr);
+ }
+
+ inline iterator_range<reg_nodbg_iterator>
+ reg_nodbg_operands(unsigned Reg) const {
+ return iterator_range<reg_nodbg_iterator>(reg_nodbg_begin(Reg),
+ reg_nodbg_end());
+ }
/// reg_instr_nodbg_iterator/reg_instr_nodbg_begin/reg_instr_nodbg_end - Walk
/// all defs and uses of the specified register, stepping by MachineInstr,
return reg_instr_nodbg_iterator(getRegUseDefListHead(RegNo));
}
static reg_instr_nodbg_iterator reg_instr_nodbg_end() {
- return reg_instr_nodbg_iterator(0);
+ return reg_instr_nodbg_iterator(nullptr);
+ }
+
+ inline iterator_range<reg_instr_nodbg_iterator>
+ reg_nodbg_instructions(unsigned Reg) const {
+ return iterator_range<reg_instr_nodbg_iterator>(reg_instr_nodbg_begin(Reg),
+ reg_instr_nodbg_end());
}
/// reg_bundle_nodbg_iterator/reg_bundle_nodbg_begin/reg_bundle_nodbg_end - Walk
return reg_bundle_nodbg_iterator(getRegUseDefListHead(RegNo));
}
static reg_bundle_nodbg_iterator reg_bundle_nodbg_end() {
- return reg_bundle_nodbg_iterator(0);
+ return reg_bundle_nodbg_iterator(nullptr);
+ }
+
+ inline iterator_range<reg_bundle_nodbg_iterator>
+ reg_nodbg_bundles(unsigned Reg) const {
+ return iterator_range<reg_bundle_nodbg_iterator>(reg_bundle_nodbg_begin(Reg),
+ reg_bundle_nodbg_end());
}
/// reg_nodbg_empty - Return true if the only instructions using or defining
def_iterator def_begin(unsigned RegNo) const {
return def_iterator(getRegUseDefListHead(RegNo));
}
- static def_iterator def_end() { return def_iterator(0); }
+ static def_iterator def_end() { return def_iterator(nullptr); }
+
+ inline iterator_range<def_iterator> def_operands(unsigned Reg) const {
+ return iterator_range<def_iterator>(def_begin(Reg), def_end());
+ }
/// def_instr_iterator/def_instr_begin/def_instr_end - Walk all defs of the
/// specified register, stepping by MachineInst.
def_instr_iterator def_instr_begin(unsigned RegNo) const {
return def_instr_iterator(getRegUseDefListHead(RegNo));
}
- static def_instr_iterator def_instr_end() { return def_instr_iterator(0); }
+ static def_instr_iterator def_instr_end() {
+ return def_instr_iterator(nullptr);
+ }
+
+ inline iterator_range<def_instr_iterator>
+ def_instructions(unsigned Reg) const {
+ return iterator_range<def_instr_iterator>(def_instr_begin(Reg),
+ def_instr_end());
+ }
/// def_bundle_iterator/def_bundle_begin/def_bundle_end - Walk all defs of the
/// specified register, stepping by bundle.
def_bundle_iterator def_bundle_begin(unsigned RegNo) const {
return def_bundle_iterator(getRegUseDefListHead(RegNo));
}
- static def_bundle_iterator def_bundle_end() { return def_bundle_iterator(0); }
+ static def_bundle_iterator def_bundle_end() {
+ return def_bundle_iterator(nullptr);
+ }
+
+ inline iterator_range<def_bundle_iterator> def_bundles(unsigned Reg) const {
+ return iterator_range<def_bundle_iterator>(def_bundle_begin(Reg),
+ def_bundle_end());
+ }
/// def_empty - Return true if there are no instructions defining the
/// specified register (it may be live-in).
use_iterator use_begin(unsigned RegNo) const {
return use_iterator(getRegUseDefListHead(RegNo));
}
- static use_iterator use_end() { return use_iterator(0); }
+ static use_iterator use_end() { return use_iterator(nullptr); }
+
+ inline iterator_range<use_iterator> use_operands(unsigned Reg) const {
+ return iterator_range<use_iterator>(use_begin(Reg), use_end());
+ }
/// use_instr_iterator/use_instr_begin/use_instr_end - Walk all uses of the
/// specified register, stepping by MachineInstr.
use_instr_iterator use_instr_begin(unsigned RegNo) const {
return use_instr_iterator(getRegUseDefListHead(RegNo));
}
- static use_instr_iterator use_instr_end() { return use_instr_iterator(0); }
+ static use_instr_iterator use_instr_end() {
+ return use_instr_iterator(nullptr);
+ }
+
+ inline iterator_range<use_instr_iterator>
+ use_instructions(unsigned Reg) const {
+ return iterator_range<use_instr_iterator>(use_instr_begin(Reg),
+ use_instr_end());
+ }
/// use_bundle_iterator/use_bundle_begin/use_bundle_end - Walk all uses of the
/// specified register, stepping by bundle.
use_bundle_iterator use_bundle_begin(unsigned RegNo) const {
return use_bundle_iterator(getRegUseDefListHead(RegNo));
}
- static use_bundle_iterator use_bundle_end() { return use_bundle_iterator(0); }
+ static use_bundle_iterator use_bundle_end() {
+ return use_bundle_iterator(nullptr);
+ }
+
+ inline iterator_range<use_bundle_iterator> use_bundles(unsigned Reg) const {
+ return iterator_range<use_bundle_iterator>(use_bundle_begin(Reg),
+ use_bundle_end());
+ }
/// use_empty - Return true if there are no instructions using the specified
/// register.
use_nodbg_iterator use_nodbg_begin(unsigned RegNo) const {
return use_nodbg_iterator(getRegUseDefListHead(RegNo));
}
- static use_nodbg_iterator use_nodbg_end() { return use_nodbg_iterator(0); }
+ static use_nodbg_iterator use_nodbg_end() {
+ return use_nodbg_iterator(nullptr);
+ }
+
+ inline iterator_range<use_nodbg_iterator>
+ use_nodbg_operands(unsigned Reg) const {
+ return iterator_range<use_nodbg_iterator>(use_nodbg_begin(Reg),
+ use_nodbg_end());
+ }
/// use_instr_nodbg_iterator/use_instr_nodbg_begin/use_instr_nodbg_end - Walk
/// all uses of the specified register, stepping by MachineInstr, skipping
return use_instr_nodbg_iterator(getRegUseDefListHead(RegNo));
}
static use_instr_nodbg_iterator use_instr_nodbg_end() {
- return use_instr_nodbg_iterator(0);
+ return use_instr_nodbg_iterator(nullptr);
+ }
+
+ inline iterator_range<use_instr_nodbg_iterator>
+ use_nodbg_instructions(unsigned Reg) const {
+ return iterator_range<use_instr_nodbg_iterator>(use_instr_nodbg_begin(Reg),
+ use_instr_nodbg_end());
}
/// use_bundle_nodbg_iterator/use_bundle_nodbg_begin/use_bundle_nodbg_end - Walk
return use_bundle_nodbg_iterator(getRegUseDefListHead(RegNo));
}
static use_bundle_nodbg_iterator use_bundle_nodbg_end() {
- return use_bundle_nodbg_iterator(0);
+ return use_bundle_nodbg_iterator(nullptr);
+ }
+
+ inline iterator_range<use_bundle_nodbg_iterator>
+ use_nodbg_bundles(unsigned Reg) const {
+ return iterator_range<use_bundle_nodbg_iterator>(use_bundle_nodbg_begin(Reg),
+ use_bundle_nodbg_end());
}
/// use_nodbg_empty - Return true if there are no non-Debug instructions
///
/// That function will return NULL if the virtual registers have incompatible
/// constraints.
+ ///
+ /// Note that if ToReg is a physical register the function will replace and
+ /// apply sub registers to ToReg in order to obtain a final/proper physical
+ /// register.
void replaceRegWith(unsigned FromReg, unsigned ToReg);
-
+
/// getVRegDef - Return the machine instr that defines the specified virtual
/// register or null if none is found. This assumes that the code is in SSA
/// form, so there should only be one definition.
if (!ReturnUses) {
if (Op) {
if (Op->isUse())
- Op = 0;
+ Op = nullptr;
else
assert(!Op->isDebug() && "Can't have debug defs");
}
MachineInstr, ptrdiff_t>::pointer pointer;
defusechain_iterator(const defusechain_iterator &I) : Op(I.Op) {}
- defusechain_iterator() : Op(0) {}
+ defusechain_iterator() : Op(nullptr) {}
bool operator==(const defusechain_iterator &x) const {
return Op == x.Op;
}
/// atEnd - return true if this iterator is equal to reg_end() on the value.
- bool atEnd() const { return Op == 0; }
+ bool atEnd() const { return Op == nullptr; }
// Iterator traversal: forward iteration only
defusechain_iterator &operator++() { // Preincrement
if (!ReturnUses) {
if (Op) {
if (Op->isUse())
- Op = 0;
+ Op = nullptr;
else
assert(!Op->isDebug() && "Can't have debug defs");
}
MachineInstr, ptrdiff_t>::pointer pointer;
defusechain_instr_iterator(const defusechain_instr_iterator &I) : Op(I.Op){}
- defusechain_instr_iterator() : Op(0) {}
+ defusechain_instr_iterator() : Op(nullptr) {}
bool operator==(const defusechain_instr_iterator &x) const {
return Op == x.Op;
}
/// atEnd - return true if this iterator is equal to reg_end() on the value.
- bool atEnd() const { return Op == 0; }
+ bool atEnd() const { return Op == nullptr; }
// Iterator traversal: forward iteration only
defusechain_instr_iterator &operator++() { // Preincrement
const int *PSet;
unsigned Weight;
public:
- PSetIterator(): PSet(0), Weight(0) {}
+ PSetIterator(): PSet(nullptr), Weight(0) {}
PSetIterator(unsigned RegUnit, const MachineRegisterInfo *MRI) {
const TargetRegisterInfo *TRI = MRI->getTargetRegisterInfo();
if (TargetRegisterInfo::isVirtualRegister(RegUnit)) {
Weight = TRI->getRegUnitWeight(RegUnit);
}
if (*PSet == -1)
- PSet = 0;
+ PSet = nullptr;
}
bool isValid() const { return PSet; }
assert(isValid() && "Invalid PSetIterator.");
++PSet;
if (*PSet == -1)
- PSet = 0;
+ PSet = nullptr;
}
};