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llvm/lib/Target/X86/X86FrameLowering.cpp
| Show First 20 Lines • Show All 922 Lines • ▼ Show 20 Lines | bool FnHasClrFunclet = | ||||
| MMI.hasEHFunclets() && Personality == EHPersonality::CoreCLR; | MMI.hasEHFunclets() && Personality == EHPersonality::CoreCLR; | ||||
| bool IsClrFunclet = IsFunclet && FnHasClrFunclet; | bool IsClrFunclet = IsFunclet && FnHasClrFunclet; | ||||
| bool HasFP = hasFP(MF); | bool HasFP = hasFP(MF); | ||||
| bool IsWin64CC = STI.isCallingConvWin64(Fn->getCallingConv()); | bool IsWin64CC = STI.isCallingConvWin64(Fn->getCallingConv()); | ||||
| bool IsWin64Prologue = MF.getTarget().getMCAsmInfo()->usesWindowsCFI(); | bool IsWin64Prologue = MF.getTarget().getMCAsmInfo()->usesWindowsCFI(); | ||||
| bool NeedsWinCFI = IsWin64Prologue && Fn->needsUnwindTableEntry(); | bool NeedsWinCFI = IsWin64Prologue && Fn->needsUnwindTableEntry(); | ||||
| bool NeedsDwarfCFI = | bool NeedsDwarfCFI = | ||||
| !IsWin64Prologue && (MMI.hasDebugInfo() || Fn->needsUnwindTableEntry()); | !IsWin64Prologue && (MMI.hasDebugInfo() || Fn->needsUnwindTableEntry()); | ||||
| bool IsMSHotpatch = | |||||
| Fn->hasFnAttribute("patchable-function") && | |||||
| Fn->getFnAttribute("patchable-function").getValueAsString() == | |||||
| "ms-hotpatch"; | |||||
| unsigned FramePtr = TRI->getFrameRegister(MF); | unsigned FramePtr = TRI->getFrameRegister(MF); | ||||
| const unsigned MachineFramePtr = | const unsigned MachineFramePtr = | ||||
| STI.isTarget64BitILP32() | STI.isTarget64BitILP32() | ||||
| ? getX86SubSuperRegister(FramePtr, 64) : FramePtr; | ? getX86SubSuperRegister(FramePtr, 64) : FramePtr; | ||||
| unsigned BasePtr = TRI->getBaseRegister(); | unsigned BasePtr = TRI->getBaseRegister(); | ||||
| // Debug location must be unknown since the first debug location is used | // Debug location must be unknown since the first debug location is used | ||||
| // to determine the end of the prologue. | // to determine the end of the prologue. | ||||
| ▲ Show 20 Lines • Show All 125 Lines • ▼ Show 20 Lines | if (NeedsWinCFI) { | ||||
| BuildMI(MBB, MBBI, DL, TII.get(X86::SEH_PushReg)) | BuildMI(MBB, MBBI, DL, TII.get(X86::SEH_PushReg)) | ||||
| .addImm(FramePtr) | .addImm(FramePtr) | ||||
| .setMIFlag(MachineInstr::FrameSetup); | .setMIFlag(MachineInstr::FrameSetup); | ||||
| } | } | ||||
| if (!IsWin64Prologue && !IsFunclet) { | if (!IsWin64Prologue && !IsFunclet) { | ||||
| // Update EBP with the new base value. | // Update EBP with the new base value. | ||||
| BuildMI(MBB, MBBI, DL, | BuildMI(MBB, MBBI, DL, | ||||
| TII.get(Uses64BitFramePtr ? X86::MOV64rr : X86::MOV32rr), | TII.get(IsMSHotpatch ? | ||||
| (Uses64BitFramePtr ? X86::MOV64rr_REV : X86::MOV32rr_REV): | |||||
| (Uses64BitFramePtr ? X86::MOV64rr : X86::MOV32rr)), | |||||
| FramePtr) | FramePtr) | ||||
| .addReg(StackPtr) | .addReg(StackPtr) | ||||
| .setMIFlag(MachineInstr::FrameSetup); | .setMIFlag(MachineInstr::FrameSetup); | ||||
| if (NeedsDwarfCFI) { | if (NeedsDwarfCFI) { | ||||
| // Mark effective beginning of when frame pointer becomes valid. | // Mark effective beginning of when frame pointer becomes valid. | ||||
| // Define the current CFA to use the EBP/RBP register. | // Define the current CFA to use the EBP/RBP register. | ||||
| unsigned DwarfFramePtr = TRI->getDwarfRegNum(MachineFramePtr, true); | unsigned DwarfFramePtr = TRI->getDwarfRegNum(MachineFramePtr, true); | ||||
| ▲ Show 20 Lines • Show All 1,907 Lines • Show Last 20 Lines | |||||