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-rw-r--r--lib/Transforms/Utils/BasicBlockUtils.cpp19
1 files changed, 10 insertions, 9 deletions
diff --git a/lib/Transforms/Utils/BasicBlockUtils.cpp b/lib/Transforms/Utils/BasicBlockUtils.cpp
index 12de9eed4b..17bd115ee9 100644
--- a/lib/Transforms/Utils/BasicBlockUtils.cpp
+++ b/lib/Transforms/Utils/BasicBlockUtils.cpp
@@ -630,28 +630,29 @@ ReturnInst *llvm::FoldReturnIntoUncondBranch(ReturnInst *RI, BasicBlock *BB,
}
/// SplitBlockAndInsertIfThen - Split the containing block at the
-/// specified instruction - everything before and including Cmp stays
-/// in the old basic block, and everything after Cmp is moved to a
+/// specified instruction - everything before and including SplitBefore stays
+/// in the old basic block, and everything after SplitBefore is moved to a
/// new block. The two blocks are connected by a conditional branch
/// (with value of Cmp being the condition).
/// Before:
/// Head
-/// Cmp
+/// SplitBefore
/// Tail
/// After:
/// Head
-/// Cmp
-/// if (Cmp)
+/// if (Cond)
/// ThenBlock
+/// SplitBefore
/// Tail
///
/// If Unreachable is true, then ThenBlock ends with
/// UnreachableInst, otherwise it branches to Tail.
/// Returns the NewBasicBlock's terminator.
-TerminatorInst *llvm::SplitBlockAndInsertIfThen(Instruction *Cmp,
- bool Unreachable, MDNode *BranchWeights) {
- Instruction *SplitBefore = Cmp->getNextNode();
+TerminatorInst *llvm::SplitBlockAndInsertIfThen(Value *Cond,
+ Instruction *SplitBefore,
+ bool Unreachable,
+ MDNode *BranchWeights) {
BasicBlock *Head = SplitBefore->getParent();
BasicBlock *Tail = Head->splitBasicBlock(SplitBefore);
TerminatorInst *HeadOldTerm = Head->getTerminator();
@@ -663,7 +664,7 @@ TerminatorInst *llvm::SplitBlockAndInsertIfThen(Instruction *Cmp,
else
CheckTerm = BranchInst::Create(Tail, ThenBlock);
BranchInst *HeadNewTerm =
- BranchInst::Create(/*ifTrue*/ThenBlock, /*ifFalse*/Tail, Cmp);
+ BranchInst::Create(/*ifTrue*/ThenBlock, /*ifFalse*/Tail, Cond);
HeadNewTerm->setMetadata(LLVMContext::MD_prof, BranchWeights);
ReplaceInstWithInst(HeadOldTerm, HeadNewTerm);
return CheckTerm;