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this argument can be an arbitrary value, it doesn't need to be an instruction.

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llvm-svn: 86923
This commit is contained in:
Chris Lattner 2009-11-12 01:37:43 +00:00
parent b5bb115ece
commit ea8b237a74
1 changed files with 3 additions and 4 deletions
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7
lib/Transforms/Scalar/JumpThreading.cpp
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@ -95,7 +95,7 @@ namespace {
bool ComputeValueKnownInPredecessors(Value *V, BasicBlock *BB,
PredValueInfo &Result);
bool ProcessThreadableEdges(Instruction *CondInst, BasicBlock *BB);
bool ProcessThreadableEdges(Value *Cond, BasicBlock *BB);
bool ProcessBranchOnDuplicateCond(BasicBlock *PredBB, BasicBlock *DestBB);
@ -927,15 +927,14 @@ FindMostPopularDest(BasicBlock *BB,
return MostPopularDest;
}
bool JumpThreading::ProcessThreadableEdges(Instruction *CondInst,
BasicBlock *BB) {
bool JumpThreading::ProcessThreadableEdges(Value *Cond, BasicBlock *BB) {
// If threading this would thread across a loop header, don't even try to
// thread the edge.
if (LoopHeaders.count(BB))
return false;
SmallVector<std::pair<ConstantInt*, BasicBlock*>, 8> PredValues;
if (!ComputeValueKnownInPredecessors(CondInst, BB, PredValues))
if (!ComputeValueKnownInPredecessors(Cond, BB, PredValues))
return false;
assert(!PredValues.empty() &&
"ComputeValueKnownInPredecessors returned true with no values");