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Add information about callee-saved registers on Win64

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48692 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2008-03-22 21:04:01 +00:00
parent 1a979d9eab
commit 1dcce2148d
2 changed files with 28 additions and 6 deletions
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30
lib/Target/X86/X86RegisterInfo.cpp
View File

@ -45,6 +45,7 @@ X86RegisterInfo::X86RegisterInfo(X86TargetMachine &tm,
// Cache some information.
const X86Subtarget *Subtarget = &TM.getSubtarget<X86Subtarget>();
Is64Bit = Subtarget->is64Bit();
IsWin64 = Subtarget->isTargetWin64();
StackAlign = TM.getFrameInfo()->getStackAlignment();
if (Is64Bit) {
SlotSize = 8;
@ -196,9 +197,17 @@ X86RegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
X86::RBX, X86::R12, X86::R13, X86::R14, X86::R15, X86::RBP, 0
};
if (Is64Bit)
return CalleeSavedRegs64Bit;
else {
static const unsigned CalleeSavedRegsWin64[] = {
X86::RBX, X86::RBP, X86::RDI, X86::RSI,
X86::R12, X86::R13, X86::R14, X86::R15, 0
};
if (Is64Bit) {
if (IsWin64)
return CalleeSavedRegsWin64;
else
return CalleeSavedRegs64Bit;
} else {
if (MF) {
MachineFrameInfo *MFI = MF->getFrameInfo();
MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
@ -225,10 +234,19 @@ X86RegisterInfo::getCalleeSavedRegClasses(const MachineFunction *MF) const {
&X86::GR64RegClass, &X86::GR64RegClass,
&X86::GR64RegClass, &X86::GR64RegClass, 0
};
static const TargetRegisterClass * const CalleeSavedRegClassesWin64[] = {
&X86::GR64RegClass, &X86::GR64RegClass,
&X86::GR64RegClass, &X86::GR64RegClass,
&X86::GR64RegClass, &X86::GR64RegClass,
&X86::GR64RegClass, &X86::GR64RegClass, 0
};
if (Is64Bit)
return CalleeSavedRegClasses64Bit;
else {
if (Is64Bit) {
if (IsWin64)
return CalleeSavedRegClassesWin64;
else
return CalleeSavedRegClasses64Bit;
} else {
if (MF) {
MachineFrameInfo *MFI = MF->getFrameInfo();
MachineModuleInfo *MMI = MFI->getMachineModuleInfo();

4
lib/Target/X86/X86RegisterInfo.h
View File

@ -59,6 +59,10 @@ private:
///
bool Is64Bit;
/// IsWin64 - Is the target on of win64 flavours
///
bool IsWin64;
/// SlotSize - Stack slot size in bytes.
///
unsigned SlotSize;