diff options
| author | Derek Schuff <dschuff@chromium.org> | 2012-08-17 14:35:45 -0700 |
|---|---|---|
| committer | Derek Schuff <dschuff@chromium.org> | 2012-08-17 14:35:45 -0700 |
| commit | b62e9abf7dd9e39c95327914ce9dfe216386824a (patch) | |
| tree | c683f0bcbef19f622727251165eaf89a4f806c62 /lib/CodeGen/LiveVariables.cpp | |
| parent | 66f65db9406ca9e59d4bfed89436f668d6a84374 (diff) | |
| parent | c723eb1aef817d47feec620933ee1ec6005cdd14 (diff) | |
Merge commit 'c723eb1aef817d47feec620933ee1ec6005cdd14'
This merges r159618 from upstream into master. It goes with clang rev
af50aab0c317462129d73ae8000c6394c718598d
Conflicts:
include/llvm/CodeGen/LexicalScopes.h
include/llvm/Target/TargetOptions.h
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
lib/Target/ARM/ARMBaseInstrInfo.cpp
lib/Target/ARM/ARMTargetMachine.cpp
lib/Target/ARM/ARMTargetObjectFile.cpp
lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp
lib/Target/Mips/MipsISelDAGToDAG.cpp
lib/Target/Mips/MipsInstrFPU.td
lib/Target/Mips/MipsMCInstLower.cpp
lib/Target/Mips/MipsTargetMachine.cpp
lib/Target/TargetMachine.cpp
lib/Target/X86/X86ISelLowering.cpp
lib/Target/X86/X86RegisterInfo.cpp
lib/Target/X86/X86TargetObjectFile.cpp
lib/Target/X86/X86TargetObjectFile.h
tools/llc/llc.cpp
(tools/llc/llc.cpp is from a merged version of r160532 because it was a bit
hairy and I didn't want to redo it.)
Diffstat (limited to 'lib/CodeGen/LiveVariables.cpp')
| -rw-r--r-- | lib/CodeGen/LiveVariables.cpp | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/lib/CodeGen/LiveVariables.cpp b/lib/CodeGen/LiveVariables.cpp index acf986ca61..348ed3a0f9 100644 --- a/lib/CodeGen/LiveVariables.cpp +++ b/lib/CodeGen/LiveVariables.cpp @@ -573,7 +573,8 @@ bool LiveVariables::runOnMachineFunction(MachineFunction &mf) { unsigned MOReg = MO.getReg(); if (MO.isUse()) { MO.setIsKill(false); - UseRegs.push_back(MOReg); + if (MO.readsReg()) + UseRegs.push_back(MOReg); } else /*MO.isDef()*/ { MO.setIsDead(false); DefRegs.push_back(MOReg); @@ -729,8 +730,9 @@ void LiveVariables::analyzePHINodes(const MachineFunction& Fn) { for (MachineBasicBlock::const_iterator BBI = I->begin(), BBE = I->end(); BBI != BBE && BBI->isPHI(); ++BBI) for (unsigned i = 1, e = BBI->getNumOperands(); i != e; i += 2) - PHIVarInfo[BBI->getOperand(i + 1).getMBB()->getNumber()] - .push_back(BBI->getOperand(i).getReg()); + if (BBI->getOperand(i).readsReg()) + PHIVarInfo[BBI->getOperand(i + 1).getMBB()->getNumber()] + .push_back(BBI->getOperand(i).getReg()); } bool LiveVariables::VarInfo::isLiveIn(const MachineBasicBlock &MBB, |