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| author | Evan Cheng <evan.cheng@apple.com> | 2010-03-26 02:12:24 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-03-26 02:12:24 +0000 |
| commit | d05e8055362be52fc33dcc685ba2ae5c722506b5 (patch) | |
| tree | 6d6f5ac41197bcd992f392664f2266d1a75e43a3 /lib/CodeGen/LiveVariables.cpp | |
| parent | 0a3dc10eba975195e8b9b028bd21a4969cd6f2de (diff) | |
LiveVariables should clear kill / dead markers first. This allows us to remove a hack in the scheduler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99597 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LiveVariables.cpp')
| -rw-r--r-- | lib/CodeGen/LiveVariables.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/lib/CodeGen/LiveVariables.cpp b/lib/CodeGen/LiveVariables.cpp index 519990e04a..ca8ecff8e6 100644 --- a/lib/CodeGen/LiveVariables.cpp +++ b/lib/CodeGen/LiveVariables.cpp @@ -556,17 +556,21 @@ bool LiveVariables::runOnMachineFunction(MachineFunction &mf) { if (MI->isPHI()) NumOperandsToProcess = 1; + // Clear kill and dead markers. LV will recompute them. SmallVector<unsigned, 4> UseRegs; SmallVector<unsigned, 4> DefRegs; for (unsigned i = 0; i != NumOperandsToProcess; ++i) { - const MachineOperand &MO = MI->getOperand(i); + MachineOperand &MO = MI->getOperand(i); if (!MO.isReg() || MO.getReg() == 0) continue; unsigned MOReg = MO.getReg(); - if (MO.isUse()) + if (MO.isUse()) { + MO.setIsKill(false); UseRegs.push_back(MOReg); - if (MO.isDef()) + } else /*MO.isDef()*/ { + MO.setIsDead(false); DefRegs.push_back(MOReg); + } } // Process all uses. |