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| author | Dale Johannesen <dalej@apple.com> | 2010-03-11 02:10:24 +0000 |
|---|---|---|
| committer | Dale Johannesen <dalej@apple.com> | 2010-03-11 02:10:24 +0000 |
| commit | 197bd3eee916a643363ff33692356c989cf23001 (patch) | |
| tree | 196b58ef5700eaa043d1fce81690f5947a56e444 /llvm/lib/CodeGen | |
| parent | 09db5370b7847c5c120a129768a0ce8328a6f5a1 (diff) | |
| download | bcm5719-llvm-197bd3eee916a643363ff33692356c989cf23001.tar.gz bcm5719-llvm-197bd3eee916a643363ff33692356c989cf23001.zip | |
Fix debug_value handling.
llvm-svn: 98224
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/MachineCSE.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/MachineCSE.cpp b/llvm/lib/CodeGen/MachineCSE.cpp index ce95d8d05ea..91d36358829 100644 --- a/llvm/lib/CodeGen/MachineCSE.cpp +++ b/llvm/lib/CodeGen/MachineCSE.cpp @@ -122,8 +122,12 @@ bool MachineCSE::isPhysDefTriviallyDead(unsigned Reg, // Reached end of block, register is obviously dead. return true; - if (I->isDebugValue()) + if (I->isDebugValue()) { + // These must not count against the limit. + ++LookAheadLeft; + ++I; continue; + } bool SeenDef = false; for (unsigned i = 0, e = I->getNumOperands(); i != e; ++i) { const MachineOperand &MO = I->getOperand(i); @@ -188,7 +192,7 @@ static bool isCopy(const MachineInstr *MI, const TargetInstrInfo *TII) { bool MachineCSE::isCSECandidate(MachineInstr *MI) { if (MI->isLabel() || MI->isPHI() || MI->isImplicitDef() || - MI->isKill() || MI->isInlineAsm()) + MI->isKill() || MI->isInlineAsm() || MI->isDebugValue()) return false; // Ignore copies. |
