56   Is64Bit = TT.isArch64Bit();  in X86RegisterInfo()
57   IsWin64 = Is64Bit && TT.isOSWindows();  in X86RegisterInfo()
62   if (Is64Bit) {  in X86RegisterInfo()
89   if (!Is64Bit && Idx == X86::sub_8bit)  in getSubClassWithSubReg()
101   if (!Is64Bit && SubIdx == X86::sub_8bit) {  in getMatchingSuperRegClass()
193     if (Is64Bit) {  in getPointerRegClass()
241   else if (Is64Bit)  in getGPRsForTailCall()
253     if (Is64Bit)  in getCrossCopyRegClass()
275     return Is64Bit ? 10 : 4;  in getRegPressureLimit()
322     if (Is64Bit)  in getCalleeSavedRegs()
329     if (HasAVX512 && Is64Bit)  in getCalleeSavedRegs()
333     if (HasAVX && Is64Bit)  in getCalleeSavedRegs()
335     if (!HasAVX && !IsWin64 && Is64Bit)  in getCalleeSavedRegs()
340     if (Is64Bit) {  in getCalleeSavedRegs()
353     assert(!Is64Bit && "CFGuard check mechanism only used on 32-bit X86");  in getCalleeSavedRegs()
357     if (Is64Bit)  in getCalleeSavedRegs()
365     if (!Is64Bit)  in getCalleeSavedRegs()
373     if (Is64Bit) {  in getCalleeSavedRegs()
394   if (Is64Bit) {  in getCalleeSavedRegs()
445     if (Is64Bit)  in getCallPreservedMask()
451     if (HasAVX512 && Is64Bit)  in getCallPreservedMask()
455     if (HasAVX && Is64Bit)  in getCallPreservedMask()
457     if (!HasAVX && !IsWin64 && Is64Bit)  in getCallPreservedMask()
462     if (Is64Bit) {  in getCallPreservedMask()
475     assert(!Is64Bit && "CFGuard check mechanism only used on 32-bit X86");  in getCallPreservedMask()
479     if (Is64Bit)  in getCallPreservedMask()
485     if (!Is64Bit)  in getCallPreservedMask()
491     if (Is64Bit) {  in getCallPreservedMask()
514   if (Is64Bit) {  in getCallPreservedMask()
593   if (!Is64Bit) {  in getReservedRegs()
615   if (!Is64Bit || !MF.getSubtarget<X86Subtarget>().hasAVX512()) {  in getReservedRegs()
624   if (!Is64Bit || !MF.getSubtarget<X86Subtarget>().hasEGPR())  in getReservedRegs()
801   return !Is64Bit && MF.getFunction().getCallingConv() == CallingConv::X86_INTR;  in shouldRealignStack()
871     assert((!Is64Bit || isInt<32>((long long)FIOffset + Imm)) &&  in eliminateFrameIndex()
905   } else if (TFI->Is64Bit && (MBB.isEHFuncletEntry() || IsEHFuncletEpilogue)) {  in eliminateFrameIndex()
951     assert((!Is64Bit || isInt<32>((long long)FIOffset + Imm)) &&  in eliminateFrameIndex()