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-rw-r--r--contrib/llvm/lib/Target/ARM/Thumb1RegisterInfo.cpp99
1 files changed, 60 insertions, 39 deletions
diff --git a/contrib/llvm/lib/Target/ARM/Thumb1RegisterInfo.cpp b/contrib/llvm/lib/Target/ARM/Thumb1RegisterInfo.cpp
index f62a13e..33cefb6 100644
--- a/contrib/llvm/lib/Target/ARM/Thumb1RegisterInfo.cpp
+++ b/contrib/llvm/lib/Target/ARM/Thumb1RegisterInfo.cpp
@@ -31,8 +31,6 @@
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetMachine.h"
-#include "llvm/ADT/BitVector.h"
-#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
@@ -48,15 +46,29 @@ Thumb1RegisterInfo::Thumb1RegisterInfo(const ARMBaseInstrInfo &tii,
: ARMBaseRegisterInfo(tii, sti) {
}
+const TargetRegisterClass*
+Thumb1RegisterInfo::getLargestLegalSuperClass(const TargetRegisterClass *RC)
+ const {
+ if (RC == ARM::tGPRRegisterClass || RC->hasSuperClass(ARM::tGPRRegisterClass))
+ return ARM::tGPRRegisterClass;
+ return ARMBaseRegisterInfo::getLargestLegalSuperClass(RC);
+}
+
+const TargetRegisterClass *
+Thumb1RegisterInfo::getPointerRegClass(unsigned Kind) const {
+ return ARM::tGPRRegisterClass;
+}
+
/// emitLoadConstPool - Emits a load from constpool to materialize the
/// specified immediate.
-void Thumb1RegisterInfo::emitLoadConstPool(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator &MBBI,
- DebugLoc dl,
- unsigned DestReg, unsigned SubIdx,
- int Val,
- ARMCC::CondCodes Pred,
- unsigned PredReg) const {
+void
+Thumb1RegisterInfo::emitLoadConstPool(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator &MBBI,
+ DebugLoc dl,
+ unsigned DestReg, unsigned SubIdx,
+ int Val,
+ ARMCC::CondCodes Pred, unsigned PredReg,
+ unsigned MIFlags) const {
MachineFunction &MF = *MBB.getParent();
MachineConstantPool *ConstantPool = MF.getConstantPool();
const Constant *C = ConstantInt::get(
@@ -64,8 +76,9 @@ void Thumb1RegisterInfo::emitLoadConstPool(MachineBasicBlock &MBB,
unsigned Idx = ConstantPool->getConstantPoolIndex(C, 4);
BuildMI(MBB, MBBI, dl, TII.get(ARM::tLDRpci))
- .addReg(DestReg, getDefRegState(true), SubIdx)
- .addConstantPoolIndex(Idx).addImm(Pred).addReg(PredReg);
+ .addReg(DestReg, getDefRegState(true), SubIdx)
+ .addConstantPoolIndex(Idx).addImm(Pred).addReg(PredReg)
+ .setMIFlags(MIFlags);
}
@@ -76,11 +89,12 @@ void Thumb1RegisterInfo::emitLoadConstPool(MachineBasicBlock &MBB,
static
void emitThumbRegPlusImmInReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator &MBBI,
+ DebugLoc dl,
unsigned DestReg, unsigned BaseReg,
int NumBytes, bool CanChangeCC,
const TargetInstrInfo &TII,
const ARMBaseRegisterInfo& MRI,
- DebugLoc dl) {
+ unsigned MIFlags = MachineInstr::NoFlags) {
MachineFunction &MF = *MBB.getParent();
bool isHigh = !isARMLowRegister(DestReg) ||
(BaseReg != 0 && !isARMLowRegister(BaseReg));
@@ -101,14 +115,15 @@ void emitThumbRegPlusImmInReg(MachineBasicBlock &MBB,
if (NumBytes <= 255 && NumBytes >= 0)
AddDefaultT1CC(BuildMI(MBB, MBBI, dl, TII.get(ARM::tMOVi8), LdReg))
- .addImm(NumBytes);
+ .addImm(NumBytes).setMIFlags(MIFlags);
else if (NumBytes < 0 && NumBytes >= -255) {
AddDefaultT1CC(BuildMI(MBB, MBBI, dl, TII.get(ARM::tMOVi8), LdReg))
- .addImm(NumBytes);
+ .addImm(NumBytes).setMIFlags(MIFlags);
AddDefaultT1CC(BuildMI(MBB, MBBI, dl, TII.get(ARM::tRSB), LdReg))
- .addReg(LdReg, RegState::Kill);
+ .addReg(LdReg, RegState::Kill).setMIFlags(MIFlags);
} else
- MRI.emitLoadConstPool(MBB, MBBI, dl, LdReg, 0, NumBytes);
+ MRI.emitLoadConstPool(MBB, MBBI, dl, LdReg, 0, NumBytes,
+ ARMCC::AL, 0, MIFlags);
// Emit add / sub.
int Opc = (isSub) ? ARM::tSUBrr : (isHigh ? ARM::tADDhirr : ARM::tADDrr);
@@ -151,10 +166,11 @@ static unsigned calcNumMI(int Opc, int ExtraOpc, unsigned Bytes,
/// a destreg = basereg + immediate in Thumb code.
void llvm::emitThumbRegPlusImmediate(MachineBasicBlock &MBB,
MachineBasicBlock::iterator &MBBI,
+ DebugLoc dl,
unsigned DestReg, unsigned BaseReg,
int NumBytes, const TargetInstrInfo &TII,
const ARMBaseRegisterInfo& MRI,
- DebugLoc dl) {
+ unsigned MIFlags) {
bool isSub = NumBytes < 0;
unsigned Bytes = (unsigned)NumBytes;
if (isSub) Bytes = -NumBytes;
@@ -211,8 +227,9 @@ void llvm::emitThumbRegPlusImmediate(MachineBasicBlock &MBB,
if (NumMIs > Threshold) {
// This will expand into too many instructions. Load the immediate from a
// constpool entry.
- emitThumbRegPlusImmInReg(MBB, MBBI, DestReg, BaseReg, NumBytes, true, TII,
- MRI, dl);
+ emitThumbRegPlusImmInReg(MBB, MBBI, dl,
+ DestReg, BaseReg, NumBytes, true,
+ TII, MRI, MIFlags);
return;
}
@@ -224,11 +241,12 @@ void llvm::emitThumbRegPlusImmediate(MachineBasicBlock &MBB,
Bytes -= ThisVal;
const TargetInstrDesc &TID = TII.get(isSub ? ARM::tSUBi3 : ARM::tADDi3);
const MachineInstrBuilder MIB =
- AddDefaultT1CC(BuildMI(MBB, MBBI, dl, TID, DestReg));
+ AddDefaultT1CC(BuildMI(MBB, MBBI, dl, TID, DestReg).setMIFlags(MIFlags));
AddDefaultPred(MIB.addReg(BaseReg, RegState::Kill).addImm(ThisVal));
} else {
BuildMI(MBB, MBBI, dl, TII.get(ARM::tMOVr), DestReg)
- .addReg(BaseReg, RegState::Kill);
+ .addReg(BaseReg, RegState::Kill)
+ .setMIFlags(MIFlags);
}
BaseReg = DestReg;
}
@@ -243,9 +261,10 @@ void llvm::emitThumbRegPlusImmediate(MachineBasicBlock &MBB,
MachineInstrBuilder MIB = BuildMI(MBB, MBBI, dl, TII.get(Opc), DestReg);
if (NeedCC)
MIB = AddDefaultT1CC(MIB);
- MIB .addReg(DestReg).addImm(ThisVal);
+ MIB.addReg(DestReg).addImm(ThisVal);
if (NeedPred)
MIB = AddDefaultPred(MIB);
+ MIB.setMIFlags(MIFlags);
}
else {
bool isKill = BaseReg != ARM::SP;
@@ -255,8 +274,9 @@ void llvm::emitThumbRegPlusImmediate(MachineBasicBlock &MBB,
MIB.addReg(BaseReg, getKillRegState(isKill)).addImm(ThisVal);
if (NeedPred)
MIB = AddDefaultPred(MIB);
- BaseReg = DestReg;
+ MIB.setMIFlags(MIFlags);
+ BaseReg = DestReg;
if (Opc == ARM::tADDrSPi) {
// r4 = add sp, imm
// r4 = add r4, imm
@@ -274,7 +294,8 @@ void llvm::emitThumbRegPlusImmediate(MachineBasicBlock &MBB,
const TargetInstrDesc &TID = TII.get(ExtraOpc);
AddDefaultPred(AddDefaultT1CC(BuildMI(MBB, MBBI, dl, TID, DestReg))
.addReg(DestReg, RegState::Kill)
- .addImm(((unsigned)NumBytes) & 3));
+ .addImm(((unsigned)NumBytes) & 3)
+ .setMIFlags(MIFlags));
}
}
@@ -283,8 +304,8 @@ static void emitSPUpdate(MachineBasicBlock &MBB,
const TargetInstrInfo &TII, DebugLoc dl,
const Thumb1RegisterInfo &MRI,
int NumBytes) {
- emitThumbRegPlusImmediate(MBB, MBBI, ARM::SP, ARM::SP, NumBytes, TII,
- MRI, dl);
+ emitThumbRegPlusImmediate(MBB, MBBI, dl, ARM::SP, ARM::SP, NumBytes, TII,
+ MRI);
}
void Thumb1RegisterInfo::
@@ -337,7 +358,7 @@ static void emitThumbConstant(MachineBasicBlock &MBB,
DestReg))
.addImm(ThisVal));
if (Imm > 0)
- emitThumbRegPlusImmediate(MBB, MBBI, DestReg, DestReg, Imm, TII, MRI, dl);
+ emitThumbRegPlusImmediate(MBB, MBBI, dl, DestReg, DestReg, Imm, TII, MRI);
if (isSub) {
const TargetInstrDesc &TID = TII.get(ARM::tRSB);
AddDefaultPred(AddDefaultT1CC(BuildMI(MBB, MBBI, dl, TID, DestReg))
@@ -430,8 +451,8 @@ rewriteFrameIndex(MachineBasicBlock::iterator II, unsigned FrameRegIdx,
// MI would expand into a large number of instructions. Don't try to
// simplify the immediate.
if (NumMIs > 2) {
- emitThumbRegPlusImmediate(MBB, II, DestReg, FrameReg, Offset, TII,
- *this, dl);
+ emitThumbRegPlusImmediate(MBB, II, dl, DestReg, FrameReg, Offset, TII,
+ *this);
MBB.erase(II);
return true;
}
@@ -450,8 +471,8 @@ rewriteFrameIndex(MachineBasicBlock::iterator II, unsigned FrameRegIdx,
}
Offset = (Offset - Mask * Scale);
MachineBasicBlock::iterator NII = llvm::next(II);
- emitThumbRegPlusImmediate(MBB, NII, DestReg, DestReg, Offset, TII,
- *this, dl);
+ emitThumbRegPlusImmediate(MBB, NII, dl, DestReg, DestReg, Offset, TII,
+ *this);
} else {
// Translate r0 = add sp, -imm to
// r0 = -imm (this is then translated into a series of instructons)
@@ -645,15 +666,15 @@ Thumb1RegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II,
bool UseRR = false;
if (Opcode == ARM::tRestore) {
if (FrameReg == ARM::SP)
- emitThumbRegPlusImmInReg(MBB, II, TmpReg, FrameReg,
- Offset, false, TII, *this, dl);
+ emitThumbRegPlusImmInReg(MBB, II, dl, TmpReg, FrameReg,
+ Offset, false, TII, *this);
else {
emitLoadConstPool(MBB, II, dl, TmpReg, 0, Offset);
UseRR = true;
}
} else {
- emitThumbRegPlusImmediate(MBB, II, TmpReg, FrameReg, Offset, TII,
- *this, dl);
+ emitThumbRegPlusImmediate(MBB, II, dl, TmpReg, FrameReg, Offset, TII,
+ *this);
}
MI.setDesc(TII.get(UseRR ? ARM::tLDRr : ARM::tLDRi));
@@ -668,15 +689,15 @@ Thumb1RegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II,
if (Opcode == ARM::tSpill) {
if (FrameReg == ARM::SP)
- emitThumbRegPlusImmInReg(MBB, II, VReg, FrameReg,
- Offset, false, TII, *this, dl);
+ emitThumbRegPlusImmInReg(MBB, II, dl, VReg, FrameReg,
+ Offset, false, TII, *this);
else {
emitLoadConstPool(MBB, II, dl, VReg, 0, Offset);
UseRR = true;
}
} else
- emitThumbRegPlusImmediate(MBB, II, VReg, FrameReg, Offset, TII,
- *this, dl);
+ emitThumbRegPlusImmediate(MBB, II, dl, VReg, FrameReg, Offset, TII,
+ *this);
MI.setDesc(TII.get(UseRR ? ARM::tSTRr : ARM::tSTRi));
MI.getOperand(i).ChangeToRegister(VReg, false, false, true);
if (UseRR)
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