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-rw-r--r--lib/Target/X86/X86RegisterInfo.cpp59
-rw-r--r--lib/Target/X86/X86RegisterInfo.h36
2 files changed, 54 insertions, 41 deletions
diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp
index e6b6319..fd8a615 100644
--- a/lib/Target/X86/X86RegisterInfo.cpp
+++ b/lib/Target/X86/X86RegisterInfo.cpp
@@ -44,36 +44,39 @@ static unsigned getIdx(const TargetRegisterClass *RC) {
}
}
-void X86RegisterInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator &MBBI,
- unsigned SrcReg, int FrameIdx,
- const TargetRegisterClass *RC) const {
+int X86RegisterInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator &MBBI,
+ unsigned SrcReg, int FrameIdx,
+ const TargetRegisterClass *RC) const {
static const unsigned Opcode[] =
{ X86::MOVrm8, X86::MOVrm16, X86::MOVrm32, X86::FSTPr80 };
MachineInstr *MI = addFrameReference(BuildMI(Opcode[getIdx(RC)], 5),
FrameIdx).addReg(SrcReg);
MBBI = MBB.insert(MBBI, MI)+1;
+ return 1;
}
-void X86RegisterInfo::loadRegFromStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator &MBBI,
- unsigned DestReg, int FrameIdx,
- const TargetRegisterClass *RC) const{
+int X86RegisterInfo::loadRegFromStackSlot(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator &MBBI,
+ unsigned DestReg, int FrameIdx,
+ const TargetRegisterClass *RC) const{
static const unsigned Opcode[] =
{ X86::MOVmr8, X86::MOVmr16, X86::MOVmr32, X86::FLDr80 };
MachineInstr *MI = addFrameReference(BuildMI(Opcode[getIdx(RC)], 4, DestReg),
FrameIdx);
MBBI = MBB.insert(MBBI, MI)+1;
+ return 1;
}
-void X86RegisterInfo::copyRegToReg(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator &MBBI,
- unsigned DestReg, unsigned SrcReg,
- const TargetRegisterClass *RC) const {
+int X86RegisterInfo::copyRegToReg(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator &MBBI,
+ unsigned DestReg, unsigned SrcReg,
+ const TargetRegisterClass *RC) const {
static const unsigned Opcode[] =
{ X86::MOVrr8, X86::MOVrr16, X86::MOVrr32, X86::FpMOV };
MachineInstr *MI = BuildMI(Opcode[getIdx(RC)],1,DestReg).addReg(SrcReg);
MBBI = MBB.insert(MBBI, MI)+1;
+ return 1;
}
//===----------------------------------------------------------------------===//
@@ -88,8 +91,8 @@ static bool hasFP(MachineFunction &MF) {
return NoFPElim || MF.getFrameInfo()->hasVarSizedObjects();
}
-void X86RegisterInfo::eliminateCallFramePseudoInstr(MachineFunction &MF,
- MachineBasicBlock &MBB,
+int X86RegisterInfo::eliminateCallFramePseudoInstr(MachineFunction &MF,
+ MachineBasicBlock &MBB,
MachineBasicBlock::iterator &I) const {
MachineInstr *New = 0, *Old = *I;;
if (hasFP(MF)) {
@@ -113,15 +116,19 @@ void X86RegisterInfo::eliminateCallFramePseudoInstr(MachineFunction &MF,
}
}
- if (New)
+ if (New) {
*I = New; // Replace the pseudo instruction with a new instruction...
- else
+ delete Old;
+ return 0;
+ } else {
I = MBB.erase(I);// Just delete the pseudo instruction...
- delete Old;
+ delete Old;
+ return -1;
+ }
}
-void X86RegisterInfo::eliminateFrameIndex(MachineFunction &MF,
- MachineBasicBlock::iterator &II) const {
+int X86RegisterInfo::eliminateFrameIndex(MachineFunction &MF,
+ MachineBasicBlock::iterator &II) const {
unsigned i = 0;
MachineInstr &MI = **II;
while (!MI.getOperand(i).isFrameIndex()) {
@@ -143,9 +150,10 @@ void X86RegisterInfo::eliminateFrameIndex(MachineFunction &MF,
Offset += MF.getFrameInfo()->getStackSize();
MI.SetMachineOperandConst(i+3, MachineOperand::MO_SignExtendedImmed, Offset);
+ return 0;
}
-void X86RegisterInfo::processFunctionBeforeFrameFinalized(MachineFunction &MF)
+int X86RegisterInfo::processFunctionBeforeFrameFinalized(MachineFunction &MF)
const {
if (hasFP(MF)) {
// Create a frame entry for the EBP register that must be saved.
@@ -153,14 +161,16 @@ void X86RegisterInfo::processFunctionBeforeFrameFinalized(MachineFunction &MF)
assert(FrameIdx == MF.getFrameInfo()->getObjectIndexEnd()-1 &&
"Slot for EBP register must be last in order to be found!");
}
+ return 0;
}
-void X86RegisterInfo::emitPrologue(MachineFunction &MF) const {
+int X86RegisterInfo::emitPrologue(MachineFunction &MF) const {
MachineBasicBlock &MBB = MF.front(); // Prolog goes in entry BB
MachineBasicBlock::iterator MBBI = MBB.begin();
MachineFrameInfo *MFI = MF.getFrameInfo();
MachineInstr *MI;
+ unsigned oldSize = MBB.size();
// Get the number of bytes to allocate from the FrameInfo
unsigned NumBytes = MFI->getStackSize();
if (hasFP(MF)) {
@@ -207,10 +217,12 @@ void X86RegisterInfo::emitPrologue(MachineFunction &MF) const {
MBB.insert(MBBI, MI);
}
}
+ return MBB.size() - oldSize;
}
-void X86RegisterInfo::emitEpilogue(MachineFunction &MF,
- MachineBasicBlock &MBB) const {
+int X86RegisterInfo::emitEpilogue(MachineFunction &MF,
+ MachineBasicBlock &MBB) const {
+ unsigned oldSize = MBB.size();
const MachineFrameInfo *MFI = MF.getFrameInfo();
MachineBasicBlock::iterator MBBI = MBB.end()-1;
MachineInstr *MI;
@@ -238,6 +250,7 @@ void X86RegisterInfo::emitEpilogue(MachineFunction &MF,
MBBI = 1+MBB.insert(MBBI, MI);
}
}
+ return MBB.size() - oldSize;
}
#include "X86GenRegisterInfo.inc"
diff --git a/lib/Target/X86/X86RegisterInfo.h b/lib/Target/X86/X86RegisterInfo.h
index 02fe14b..0db8e18 100644
--- a/lib/Target/X86/X86RegisterInfo.h
+++ b/lib/Target/X86/X86RegisterInfo.h
@@ -25,31 +25,31 @@ struct X86RegisterInfo : public X86GenRegisterInfo {
const TargetRegisterClass* getRegClassForType(const Type* Ty) const;
/// Code Generation virtual methods...
- void storeRegToStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator &MBBI,
- unsigned SrcReg, int FrameIndex,
- const TargetRegisterClass *RC) const;
-
- void loadRegFromStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator &MBBI,
- unsigned DestReg, int FrameIndex,
- const TargetRegisterClass *RC) const;
+ int storeRegToStackSlot(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator &MBBI,
+ unsigned SrcReg, int FrameIndex,
+ const TargetRegisterClass *RC) const;
+
+ int loadRegFromStackSlot(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator &MBBI,
+ unsigned DestReg, int FrameIndex,
+ const TargetRegisterClass *RC) const;
- void copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI,
+ int copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI,
unsigned DestReg, unsigned SrcReg,
const TargetRegisterClass *RC) const;
- void eliminateCallFramePseudoInstr(MachineFunction &MF,
- MachineBasicBlock &MBB,
- MachineBasicBlock::iterator &I) const;
+ int eliminateCallFramePseudoInstr(MachineFunction &MF,
+ MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator &I) const;
- void eliminateFrameIndex(MachineFunction &MF,
- MachineBasicBlock::iterator &II) const;
+ int eliminateFrameIndex(MachineFunction &MF,
+ MachineBasicBlock::iterator &II) const;
- void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
+ int processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
- void emitPrologue(MachineFunction &MF) const;
- void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
+ int emitPrologue(MachineFunction &MF) const;
+ int emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
};
#endif
generated by cgit v1.1 at 2025-08-15 07:19:33 +0000