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Allow some reloads to be folded in multi-use cases. Specifically testl r, r -> cmpl [mem], 0.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44479 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2007-12-01 02:07:52 +00:00
parent 790e11cdff
commit e62f97c094
13 changed files with 259 additions and 32 deletions
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3
include/llvm/CodeGen/LiveIntervalAnalysis.h
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@@ -275,7 +275,8 @@ namespace llvm {
/// returns true.
bool tryFoldMemoryOperand(MachineInstr* &MI, VirtRegMap &vrm,
MachineInstr *DefMI, unsigned InstrIdx,
unsigned OpIdx, unsigned NumUses,
unsigned OpIdx,
SmallVector<unsigned, 2> &UseOps,
bool isSS, int Slot, unsigned Reg);
/// anyKillInMBBAfterIdx - Returns true if there is a kill of the specified