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Add information about callee-saved registers on Win64
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48692 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -45,6 +45,7 @@ X86RegisterInfo::X86RegisterInfo(X86TargetMachine &tm,
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// Cache some information.
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const X86Subtarget *Subtarget = &TM.getSubtarget<X86Subtarget>();
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Is64Bit = Subtarget->is64Bit();
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IsWin64 = Subtarget->isTargetWin64();
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StackAlign = TM.getFrameInfo()->getStackAlignment();
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if (Is64Bit) {
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SlotSize = 8;
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@ -196,9 +197,17 @@ X86RegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
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X86::RBX, X86::R12, X86::R13, X86::R14, X86::R15, X86::RBP, 0
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};
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if (Is64Bit)
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return CalleeSavedRegs64Bit;
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else {
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static const unsigned CalleeSavedRegsWin64[] = {
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X86::RBX, X86::RBP, X86::RDI, X86::RSI,
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X86::R12, X86::R13, X86::R14, X86::R15, 0
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};
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if (Is64Bit) {
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if (IsWin64)
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return CalleeSavedRegsWin64;
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else
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return CalleeSavedRegs64Bit;
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} else {
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if (MF) {
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MachineFrameInfo *MFI = MF->getFrameInfo();
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MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
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@ -225,10 +234,19 @@ X86RegisterInfo::getCalleeSavedRegClasses(const MachineFunction *MF) const {
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&X86::GR64RegClass, &X86::GR64RegClass,
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&X86::GR64RegClass, &X86::GR64RegClass, 0
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};
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static const TargetRegisterClass * const CalleeSavedRegClassesWin64[] = {
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&X86::GR64RegClass, &X86::GR64RegClass,
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&X86::GR64RegClass, &X86::GR64RegClass,
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&X86::GR64RegClass, &X86::GR64RegClass,
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&X86::GR64RegClass, &X86::GR64RegClass, 0
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};
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if (Is64Bit)
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return CalleeSavedRegClasses64Bit;
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else {
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if (Is64Bit) {
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if (IsWin64)
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return CalleeSavedRegClassesWin64;
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else
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return CalleeSavedRegClasses64Bit;
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} else {
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if (MF) {
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MachineFrameInfo *MFI = MF->getFrameInfo();
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MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
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@ -59,6 +59,10 @@ private:
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///
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bool Is64Bit;
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/// IsWin64 - Is the target on of win64 flavours
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///
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bool IsWin64;
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/// SlotSize - Stack slot size in bytes.
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///
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unsigned SlotSize;
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