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Speed this up a bit by making ModifiedRegs a vector<char> not vector<bool> 

llvm-svn: 19787
This commit is contained in:
Chris Lattner 2005-01-23 21:45:01 +00:00
parent 9e2c7facb2
commit ef2de322c6
1 changed files with 5 additions and 6 deletions
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11
llvm/lib/CodeGen/PrologEpilogInserter.cpp
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@ -112,7 +112,7 @@ void PEI::calculateCallerSavedRegisters(MachineFunction &Fn) {
return;
// This bitset contains an entry for each physical register for the target...
std::vector<bool> ModifiedRegs(RegInfo->getNumRegs());
std::vector<char> ModifiedRegs(RegInfo->getNumRegs());
unsigned MaxCallFrameSize = 0;
bool HasCalls = false;
@ -209,7 +209,7 @@ void PEI::saveCallerSavedRegisters(MachineFunction &Fn) {
const MRegisterInfo *RegInfo = Fn.getTarget().getRegisterInfo();
// Now that we have a stack slot for each register to be saved, insert spill
// code into the entry block...
// code into the entry block.
MachineBasicBlock *MBB = Fn.begin();
MachineBasicBlock::iterator I = MBB->begin();
for (unsigned i = 0, e = RegsToSave.size(); i != e; ++i) {
@ -219,8 +219,8 @@ void PEI::saveCallerSavedRegisters(MachineFunction &Fn) {
// Add code to restore the callee-save registers in each exiting block.
const TargetInstrInfo &TII = *Fn.getTarget().getInstrInfo();
for (MachineFunction::iterator FI = Fn.begin(), E = Fn.end(); FI != E; ++FI) {
// If last instruction is a return instruction, add an epilogue
for (MachineFunction::iterator FI = Fn.begin(), E = Fn.end(); FI != E; ++FI)
// If last instruction is a return instruction, add an epilogue.
if (!FI->empty() && TII.isReturn(FI->back().getOpcode())) {
MBB = FI;
I = MBB->end(); --I;
@ -232,12 +232,11 @@ void PEI::saveCallerSavedRegisters(MachineFunction &Fn) {
--I; // Insert in reverse order
}
}
}
}
/// calculateFrameObjectOffsets - Calculate actual frame offsets for all of the
/// abstract stack objects...
/// abstract stack objects.
///
void PEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
const TargetFrameInfo &TFI = *Fn.getTarget().getFrameInfo();