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Get rid of one getStackAlignment(). RegisterInfo shouldn't need to know about stack alignment.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133679 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2011-06-23 01:53:43 +00:00
parent e3cd13f0e2
commit 2fa82bc3da
3 changed files with 8 additions and 11 deletions
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7
lib/Target/X86/X86RegisterInfo.cpp
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@@ -60,7 +60,6 @@ X86RegisterInfo::X86RegisterInfo(X86TargetMachine &tm,
const X86Subtarget *Subtarget = &TM.getSubtarget<X86Subtarget>();
Is64Bit = Subtarget->is64Bit();
IsWin64 = Subtarget->isTargetWin64();
StackAlign = TM.getFrameLowering()->getStackAlignment();
if (Is64Bit) {
SlotSize = 8;
@@ -557,6 +556,7 @@ bool X86RegisterInfo::canRealignStack(const MachineFunction &MF) const {
bool X86RegisterInfo::needsStackRealignment(const MachineFunction &MF) const {
const MachineFrameInfo *MFI = MF.getFrameInfo();
const Function *F = MF.getFunction();
unsigned StackAlign = TM.getFrameLowering()->getStackAlignment();
bool requiresRealignment = ((MFI->getMaxAlignment() > StackAlign) ||
F->hasFnAttr(Attribute::StackAlignment));
@@ -632,6 +632,7 @@ eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
// We need to keep the stack aligned properly. To do this, we round the
// amount of space needed for the outgoing arguments up to the next
// alignment boundary.
unsigned StackAlign = TM.getFrameLowering()->getStackAlignment();
Amount = (Amount + StackAlign - 1) / StackAlign * StackAlign;
MachineInstr *New = 0;
@@ -927,10 +928,10 @@ namespace {
virtual bool runOnMachineFunction(MachineFunction &MF) {
const X86TargetMachine *TM =
static_cast<const X86TargetMachine *>(&MF.getTarget());
const X86RegisterInfo *X86RI = TM->getRegisterInfo();
const TargetFrameLowering *TFI = TM->getFrameLowering();
MachineRegisterInfo &RI = MF.getRegInfo();
X86MachineFunctionInfo *FuncInfo = MF.getInfo<X86MachineFunctionInfo>();
unsigned StackAlignment = X86RI->getStackAlignment();
unsigned StackAlignment = TFI->getStackAlignment();
// Be over-conservative: scan over all vreg defs and find whether vector
// registers are used. If yes, there is a possibility that vector register