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Use BuildMI instead of explicit code. 

llvm-svn: 4362
This commit is contained in:
Chris Lattner 2002-10-28 21:43:57 +00:00
parent 1c6e20aab6
commit cbe6385890
1 changed files with 15 additions and 34 deletions
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49
llvm/lib/Target/Sparc/PrologEpilogCodeInserter.cpp
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@ -13,7 +13,7 @@
#include "SparcRegClassInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineCodeForInstruction.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/InstrSelectionSupport.h"
#include "llvm/Pass.h"
#include "llvm/Function.h"
@ -60,7 +60,7 @@ void InsertPrologEpilogCode::InsertPrologCode(Function &F)
// See the comments below for the choice of this register.
//
MachineFunction& mcInfo = MachineFunction::get(&F);
unsigned int staticStackSize = mcInfo.getStaticStackSize();
unsigned staticStackSize = mcInfo.getStaticStackSize();
if (staticStackSize < (unsigned) frameInfo.getMinStackFrameSize())
staticStackSize = (unsigned) frameInfo.getMinStackFrameSize();
@ -69,51 +69,34 @@ void InsertPrologEpilogCode::InsertPrologCode(Function &F)
(unsigned) frameInfo.getStackFrameSizeAlignment()))
staticStackSize += frameInfo.getStackFrameSizeAlignment() - padsz;
if (Target.getInstrInfo().constantFitsInImmedField(SAVE, staticStackSize))
{
M = new MachineInstr(SAVE);
M->SetMachineOperandReg(0, Target.getRegInfo().getStackPointer());
M->SetMachineOperandConst(1, MachineOperand::MO_SignExtendedImmed,
- (int) staticStackSize);
M->SetMachineOperandReg(2, Target.getRegInfo().getStackPointer());
mvec.push_back(M);
}
else
{
int32_t C = - (int) staticStackSize;
int SP = Target.getRegInfo().getStackPointer();
if (Target.getInstrInfo().constantFitsInImmedField(SAVE, staticStackSize)) {
M = BuildMI(SAVE, 3).addMReg(SP).addSImm(C).addMReg(SP);
mvec.push_back(M);
} else {
// We have to put the stack size value into a register before SAVE.
// Use register %g1 since it is volatile across calls. Note that the
// local (%l) and in (%i) registers cannot be used before the SAVE!
// Do this by creating a code sequence equivalent to:
// SETSW -(stackSize), %g1
int32_t C = - (int) staticStackSize;
int uregNum = Target.getRegInfo().getUnifiedRegNum(
Target.getRegInfo().getRegClassIDOfType(Type::IntTy),
SparcIntRegClass::g1);
M = new MachineInstr(SETHI);
M->SetMachineOperandConst(0, MachineOperand::MO_SignExtendedImmed, C);
M->SetMachineOperandReg(1, uregNum);
M = BuildMI(SETHI, 2).addSImm(C).addMReg(uregNum);
M->setOperandHi32(0);
mvec.push_back(M);
M = new MachineInstr(OR);
M->SetMachineOperandReg(0, uregNum);
M->SetMachineOperandConst(1, MachineOperand::MO_SignExtendedImmed, C);
M->SetMachineOperandReg(2, uregNum);
M = BuildMI(OR, 3).addMReg(uregNum).addSImm(C).addMReg(uregNum);
M->setOperandLo32(1);
mvec.push_back(M);
M = new MachineInstr(SRA);
M->SetMachineOperandReg(0, uregNum);
M->SetMachineOperandConst(1, MachineOperand::MO_UnextendedImmed, 0);
M->SetMachineOperandReg(2, uregNum);
M = BuildMI(SRA, 3).addMReg(uregNum).addZImm(0).addMReg(uregNum);
mvec.push_back(M);
// Now generate the SAVE using the value in register %g1
M = new MachineInstr(SAVE);
M->SetMachineOperandReg(0, Target.getRegInfo().getStackPointer());
M->SetMachineOperandReg(1, uregNum);
M->SetMachineOperandReg(2, Target.getRegInfo().getStackPointer());
M = BuildMI(SAVE, 3).addMReg(SP).addMReg(uregNum).addMReg(SP);
mvec.push_back(M);
}
@ -130,11 +113,9 @@ void InsertPrologEpilogCode::InsertEpilogCode(Function &F)
Instruction *TermInst = (Instruction*)BB.getTerminator();
if (TermInst->getOpcode() == Instruction::Ret)
{
MachineInstr *Restore = new MachineInstr(RESTORE);
Restore->SetMachineOperandReg(0, Target.getRegInfo().getZeroRegNum());
Restore->SetMachineOperandConst(1, MachineOperand::MO_SignExtendedImmed,
(int64_t)0);
Restore->SetMachineOperandReg(2, Target.getRegInfo().getZeroRegNum());
int ZR = Target.getRegInfo().getZeroRegNum();
MachineInstr *Restore =
BuildMI(RESTORE, 3).addMReg(ZR).addSImm(0).addMReg(ZR);
MachineCodeForInstruction &termMvec =
MachineCodeForInstruction::get(TermInst);