[llvm-commits] [llvm] r132880 - /llvm/trunk/lib/Target/X86/X86FrameLowering.cpp
Charles Davis
cdavis at mines.edu
Sat Jun 11 18:45:54 PDT 2011
Author: cdavis
Date: Sat Jun 11 20:45:54 2011
New Revision: 132880
URL: http://llvm.org/viewvc/llvm-project?rev=132880&view=rev
Log:
Put FrameSetup flag on x86 instructions that set up the call frame. No
functionality change.
Later on, we'll use the flag to emit SEH pseudo-ops that describe how the
call frame was built.
Modified:
llvm/trunk/lib/Target/X86/X86FrameLowering.cpp
Modified: llvm/trunk/lib/Target/X86/X86FrameLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86FrameLowering.cpp?rev=132880&r1=132879&r2=132880&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86FrameLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86FrameLowering.cpp Sat Jun 11 20:45:54 2011
@@ -160,8 +160,10 @@
Opc = isSub
? (Is64Bit ? X86::PUSH64r : X86::PUSH32r)
: (Is64Bit ? X86::POP64r : X86::POP32r);
- BuildMI(MBB, MBBI, DL, TII.get(Opc))
+ MachineInstr *MI = BuildMI(MBB, MBBI, DL, TII.get(Opc))
.addReg(Reg, getDefRegState(!isSub) | getUndefRegState(isSub));
+ if (isSub)
+ MI->setFlag(MachineInstr::FrameSetup);
Offset -= ThisVal;
continue;
}
@@ -171,6 +173,8 @@
BuildMI(MBB, MBBI, DL, TII.get(Opc), StackPtr)
.addReg(StackPtr)
.addImm(ThisVal);
+ if (isSub)
+ MI->setFlag(MachineInstr::FrameSetup);
MI->getOperand(3).setIsDead(); // The EFLAGS implicit def is dead.
Offset -= ThisVal;
}
@@ -409,7 +413,8 @@
TII.get(getSUBriOpcode(Is64Bit, -TailCallReturnAddrDelta)),
StackPtr)
.addReg(StackPtr)
- .addImm(-TailCallReturnAddrDelta);
+ .addImm(-TailCallReturnAddrDelta)
+ .setMIFlag(MachineInstr::FrameSetup);
MI->getOperand(3).setIsDead(); // The EFLAGS implicit def is dead.
}
@@ -447,7 +452,8 @@
// Save EBP/RBP into the appropriate stack slot.
BuildMI(MBB, MBBI, DL, TII.get(Is64Bit ? X86::PUSH64r : X86::PUSH32r))
- .addReg(FramePtr, RegState::Kill);
+ .addReg(FramePtr, RegState::Kill)
+ .setMIFlag(MachineInstr::FrameSetup);
if (needsFrameMoves) {
// Mark the place where EBP/RBP was saved.
@@ -474,7 +480,8 @@
// Update EBP with the new base value...
BuildMI(MBB, MBBI, DL,
TII.get(Is64Bit ? X86::MOV64rr : X86::MOV32rr), FramePtr)
- .addReg(StackPtr);
+ .addReg(StackPtr)
+ .setMIFlag(MachineInstr::FrameSetup);
if (needsFrameMoves) {
// Mark effective beginning of when frame pointer becomes valid.
@@ -919,7 +926,8 @@
// X86RegisterInfo::emitPrologue will handle spilling of frame register.
continue;
CalleeFrameSize += SlotSize;
- BuildMI(MBB, MI, DL, TII.get(Opc)).addReg(Reg, RegState::Kill);
+ BuildMI(MBB, MI, DL, TII.get(Opc)).addReg(Reg, RegState::Kill)
+ .setMIFlag(MachineInstr::FrameSetup);
}
X86FI->setCalleeSavedFrameSize(CalleeFrameSize);
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