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Turns out AnalyzeBranch can modify the mbb being analyzed. This is a nasty

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suprise to some callers, e.g. register coalescer. For now, add an parameter
that tells AnalyzeBranch whether it's safe to modify the mbb. A better
solution is out there, but I don't have time to deal with it right now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64124 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2009-02-09 07:14:22 +00:00
parent 0de5d6fce0
commit dc54d317e7
16 changed files with 60 additions and 30 deletions
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3
lib/Target/CellSPU/SPUInstrInfo.h
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@@ -100,7 +100,8 @@ namespace llvm {
virtual bool AnalyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB,
MachineBasicBlock *&FBB,
SmallVectorImpl<MachineOperand> &Cond) const;
SmallVectorImpl<MachineOperand> &Cond,
bool AllowModify) const;
virtual unsigned RemoveBranch(MachineBasicBlock &MBB) const;