diff options
| author | Evan Cheng <evan.cheng@apple.com> | 2009-09-22 00:29:40 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-09-22 00:29:40 +0000 |
| commit | 1c17c1bc54335564e86bdb7c5e87383feddbc729 (patch) | |
| tree | b091d73997080886b47f2d8859e19f7ca0d5b46a /lib/CodeGen/LowerSubregs.cpp | |
| parent | 850c9178dc5bc8a49fc41c7cf606bfdd7cd1de3a (diff) | |
Minor bug fix. LowerSubregs should translate
%S0<def> = EXTRACT_SUBREG %Q0<kill>, 1
to
%S0<def> = IMPLICIT_DEF %Q0<imp-use,kill>
Implicit_def does not *read* any register so the operand should be marked "implicit". The missing "implicit" marker on the operand is wrong, but it doesn't actually break anything.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82503 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LowerSubregs.cpp')
| -rw-r--r-- | lib/CodeGen/LowerSubregs.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/CodeGen/LowerSubregs.cpp b/lib/CodeGen/LowerSubregs.cpp index 812d97d66c..f3157f008b 100644 --- a/lib/CodeGen/LowerSubregs.cpp +++ b/lib/CodeGen/LowerSubregs.cpp @@ -130,6 +130,7 @@ bool LowerSubregsInstructionPass::LowerExtract(MachineInstr *MI) { // instruction with IMPLICIT_DEF. MI->setDesc(TII.get(TargetInstrInfo::IMPLICIT_DEF)); MI->RemoveOperand(2); // SubIdx + MI->getOperand(1).setImplicit(true); DEBUG(errs() << "subreg: replace by: " << *MI); return true; } |