diff options
| author | Evan Cheng <evan.cheng@apple.com> | 2010-05-10 21:25:30 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-05-10 21:25:30 +0000 |
| commit | 9cc9bfaf86510790c36198b033f241635614a8d0 (patch) | |
| tree | aeeebed4a859a4fc913ffc54e9b1298ebf673a07 | |
| parent | fc6e6a9b3b2b2de7bee47d9dcbdfdc72ca7f5238 (diff) | |
| download | external_llvm-9cc9bfaf86510790c36198b033f241635614a8d0.zip external_llvm-9cc9bfaf86510790c36198b033f241635614a8d0.tar.gz external_llvm-9cc9bfaf86510790c36198b033f241635614a8d0.tar.bz2 | |
It's not safe to propagate implicit_def that defines part of a register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103436 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/ProcessImplicitDefs.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/CodeGen/ProcessImplicitDefs.cpp b/lib/CodeGen/ProcessImplicitDefs.cpp index d7179b3..75875d2 100644 --- a/lib/CodeGen/ProcessImplicitDefs.cpp +++ b/lib/CodeGen/ProcessImplicitDefs.cpp @@ -89,6 +89,8 @@ bool ProcessImplicitDefs::runOnMachineFunction(MachineFunction &fn) { MachineInstr *MI = &*I; ++I; if (MI->isImplicitDef()) { + if (MI->getOperand(0).getSubReg()) + continue; unsigned Reg = MI->getOperand(0).getReg(); ImpDefRegs.insert(Reg); if (TargetRegisterInfo::isPhysicalRegister(Reg)) { |