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Fix indentation, add comment.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122345 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Stuart Hastings 2010-12-21 17:16:58 +00:00
parent 1cd0f4637b
commit 56500edc7a
1 changed files with 6 additions and 4 deletions
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10
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -253,13 +253,15 @@ void SelectionDAGLegalize::LegalizeDAG() {
/// FindCallEndFromCallStart - Given a chained node that is part of a call
/// sequence, find the CALLSEQ_END node that terminates the call sequence.
static SDNode *FindCallEndFromCallStart(SDNode *Node, int depth = 0) {
// Nested CALLSEQ_START/END constructs aren't yet legal,
// but we can DTRT and handle them correctly here.
if (Node->getOpcode() == ISD::CALLSEQ_START)
depth++;
else if (Node->getOpcode() == ISD::CALLSEQ_END) {
depth--;
if (depth == 0)
return Node;
}
depth--;
if (depth == 0)
return Node;
}
if (Node->use_empty())
return 0; // No CallSeqEnd