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| author | Andrew Trick <atrick@apple.com> | 2013-11-12 22:58:39 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2013-11-12 22:58:39 +0000 |
| commit | 7107aded170612748f46380f21ec6b71dfaf4910 (patch) | |
| tree | 6960660e3e5b1489f31a8f32015a066e26c9a71e /lib/Target/X86/X86InstrInfo.cpp | |
| parent | 430b6eb4191579651c630ef2922db22578df9710 (diff) | |
| download | external_llvm-7107aded170612748f46380f21ec6b71dfaf4910.zip external_llvm-7107aded170612748f46380f21ec6b71dfaf4910.tar.gz external_llvm-7107aded170612748f46380f21ec6b71dfaf4910.tar.bz2 | |
Cleanup the stackmap operand folding code and fix a corner case.
I still don't know how to refer to the fixed operands symbolically. I
plan to look into it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194529 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86InstrInfo.cpp')
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.cpp | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp index 75c6c2a..2351cff 100644 --- a/lib/Target/X86/X86InstrInfo.cpp +++ b/lib/Target/X86/X86InstrInfo.cpp @@ -4206,12 +4206,18 @@ static MachineInstr* foldPatchpoint(MachineFunction &MF, MF.CreateMachineInstr(TII.get(MI->getOpcode()), MI->getDebugLoc(), true); MachineInstrBuilder MIB(MF, NewMI); - bool isPatchPoint = MI->getOpcode() == TargetOpcode::PATCHPOINT; - // For PatchPoint, the call args are not foldable. - unsigned NumCallArgs = MI->getOperand(StartIdx+3).getImm(); - StartIdx = isPatchPoint ? - StartIdx + NumCallArgs + 5 : - StartIdx + 2; + switch (MI->getOpcode()) { + case TargetOpcode::STACKMAP: + StartIdx += 2; // Skip ID, nShadowBytes. + break; + case TargetOpcode::PATCHPOINT: + // Skip ID, numBytes, Target, numArgs. + // For PatchPoint, the call args are not foldable. + StartIdx += MI->getOperand(StartIdx+3).getImm() + 4; + break; + default: + llvm_unreachable("unexpected stackmap opcode"); + } // Return false if any operands requested for folding are not foldable (not // part of the stackmap's live values). |