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SelectionDAGBuilder: update comment in HandlePHINodesInSuccessorBlocks.

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From what I can tell, the code is checking for PHIs that expect any value from
this block, not just constants.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232697 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hans Wennborg 2015-03-19 00:57:51 +00:00
parent 5101c89f13
commit aa695c92ee
1 changed files with 2 additions and 2 deletions
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4
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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@ -7737,8 +7737,8 @@ SelectionDAGBuilder::HandlePHINodesInSuccessorBlocks(const BasicBlock *LLVMBB) {
SmallPtrSet<MachineBasicBlock *, 4> SuccsHandled;
// Check successor nodes' PHI nodes that expect a constant to be available
// from this block.
// Check PHI nodes in successors that expect a value to be available from this
// block.
for (unsigned succ = 0, e = TI->getNumSuccessors(); succ != e; ++succ) {
const BasicBlock *SuccBB = TI->getSuccessor(succ);
if (!isa<PHINode>(SuccBB->begin())) continue;