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[SystemZ] Use "for (auto" a bit

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Just the simple cases for now.  There were a few knock-on changes of
MachineBasicBlock *s to MachineBasicBlock &s.  No functional change intended.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203105 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Sandiford
2014-03-06 11:00:15 +00:00
parent 9a1cd05a3d
commit b653ed8545
5 changed files with 39 additions and 53 deletions
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19
lib/Target/SystemZ/SystemZFrameLowering.cpp
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@@ -336,9 +336,8 @@ void SystemZFrameLowering::emitPrologue(MachineFunction &MF) const {
MCSymbol *GPRSaveLabel = MMI.getContext().CreateTempSymbol();
BuildMI(MBB, MBBI, DL,
ZII->get(TargetOpcode::PROLOG_LABEL)).addSym(GPRSaveLabel);
for (std::vector<CalleeSavedInfo>::const_iterator
I = CSI.begin(), E = CSI.end(); I != E; ++I) {
unsigned Reg = I->getReg();
for (auto &Save : CSI) {
unsigned Reg = Save.getReg();
if (SystemZ::GR64BitRegClass.contains(Reg)) {
int64_t Offset = SPOffsetFromCFA + RegSpillOffsets[Reg];
MMI.addFrameInst(MCCFIInstruction::createOffset(
@@ -378,16 +377,14 @@ void SystemZFrameLowering::emitPrologue(MachineFunction &MF) const {
// Mark the FramePtr as live at the beginning of every block except
// the entry block. (We'll have marked R11 as live on entry when
// saving the GPRs.)
for (MachineFunction::iterator I = std::next(MF.begin()), E = MF.end();
I != E; ++I)
for (auto I = std::next(MF.begin()), E = MF.end(); I != E; ++I)
I->addLiveIn(SystemZ::R11D);
}
// Skip over the FPR saves.
MCSymbol *FPRSaveLabel = 0;
for (std::vector<CalleeSavedInfo>::const_iterator
I = CSI.begin(), E = CSI.end(); I != E; ++I) {
unsigned Reg = I->getReg();
for (auto &Save : CSI) {
unsigned Reg = Save.getReg();
if (SystemZ::FP64BitRegClass.contains(Reg)) {
if (MBBI != MBB.end() &&
(MBBI->getOpcode() == SystemZ::STD ||
@@ -399,10 +396,10 @@ void SystemZFrameLowering::emitPrologue(MachineFunction &MF) const {
// Add CFI for the this save.
if (!FPRSaveLabel)
FPRSaveLabel = MMI.getContext().CreateTempSymbol();
unsigned Reg = MRI->getDwarfRegNum(I->getReg(), true);
int64_t Offset = getFrameIndexOffset(MF, I->getFrameIdx());
unsigned DwarfReg = MRI->getDwarfRegNum(Reg, true);
int64_t Offset = getFrameIndexOffset(MF, Save.getFrameIdx());
MMI.addFrameInst(MCCFIInstruction::createOffset(
FPRSaveLabel, Reg, SPOffsetFromCFA + Offset));
FPRSaveLabel, DwarfReg, SPOffsetFromCFA + Offset));
}
}
// Complete the CFI for the FPR saves, modelling them as taking effect