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Use a different scheme to chose 16/32 variants. This scheme is more

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consistent with how BuildMI works. No new tests needed. All should work
the same as before.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175342 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reed Kotler 2013-02-16 09:47:57 +00:00
parent 6d3a278aab
commit 6a0da011e4
2 changed files with 7 additions and 11 deletions
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14
lib/Target/Mips/Mips16InstrInfo.cpp
View File

@ -184,7 +184,7 @@ void Mips16InstrInfo::makeFrame(unsigned SP, int64_t FrameSize,
int64_t Remainder = FrameSize - Base;
BuildMI(MBB, I, DL, get(Mips::SaveRaF16)). addImm(Base);
if (isInt<16>(-Remainder))
BuildAddiuSpImm(MBB, I, DL, -Remainder);
BuildMI(MBB, I, DL, AddiuSpImm(-Remainder)).addImm(-Remainder);
else
adjustStackPtrBig(SP, -Remainder, MBB, I, Mips::V0, Mips::V1);
}
@ -225,7 +225,7 @@ void Mips16InstrInfo::restoreFrame(unsigned SP, int64_t FrameSize,
// returns largest possible n bit unsigned integer
int64_t Remainder = FrameSize - Base;
if (isInt<16>(Remainder))
BuildAddiuSpImm(MBB, I, DL, Remainder);
BuildMI(MBB, I, DL, AddiuSpImm(Remainder)).addImm(Remainder);
else
adjustStackPtrBig(SP, Remainder, MBB, I, Mips::A0, Mips::A1);
BuildMI(MBB, I, DL, get(Mips::RestoreRaF16)). addImm(Base);
@ -299,7 +299,7 @@ void Mips16InstrInfo::adjustStackPtr(unsigned SP, int64_t Amount,
MachineBasicBlock::iterator I) const {
DebugLoc DL = I != MBB.end() ? I->getDebugLoc() : DebugLoc();
if (isInt<16>(Amount)) // need to change to addiu sp, ....and isInt<16>
BuildAddiuSpImm(MBB, I, DL, Amount);
BuildMI(MBB, I, DL, AddiuSpImm(Amount)).addImm(Amount);
else
adjustStackPtrBigUnrestricted(SP, Amount, MBB, I);
}
@ -400,13 +400,11 @@ void Mips16InstrInfo::ExpandRetRA16(MachineBasicBlock &MBB,
BuildMI(MBB, I, I->getDebugLoc(), get(Opc));
}
void Mips16InstrInfo::BuildAddiuSpImm(
MachineBasicBlock &MBB,
MachineBasicBlock::iterator II, DebugLoc DL, int64_t Imm) const {
const MCInstrDesc &Mips16InstrInfo::AddiuSpImm(int64_t Imm) const {
if (validSpImm8(Imm))
BuildMI(MBB, II, DL, get(Mips::AddiuSpImm16)).addImm(Imm);
return get(Mips::AddiuSpImm16);
else
BuildMI(MBB, II, DL, get(Mips::AddiuSpImmX16)).addImm(Imm);
return get(Mips::AddiuSpImmX16);
}
const MipsInstrInfo *llvm::createMips16InstrInfo(MipsTargetMachine &TM) {

4
lib/Target/Mips/Mips16InstrInfo.h
View File

@ -93,10 +93,8 @@ public:
//
// build the proper one based on the Imm field
//
void BuildAddiuSpImm(MachineBasicBlock &MBB,
MachineBasicBlock::iterator II, DebugLoc DL,
int64_t Imm) const;
const MCInstrDesc& AddiuSpImm(int64_t Imm) const;
private:
virtual unsigned GetAnalyzableBrOpc(unsigned Opc) const;