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Fix DbgValue handling in SelectionDAG.

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[DAG] Relocate TransferDbgValues in ReplaceAllUsesWith(SDValue, SDValue)
to before we modify the CSE maps.

llvm-svn: 277027
This commit is contained in:
Nirav Dave 2016-07-28 19:48:39 +00:00
parent a9eb365da8
commit 3e060cca10
1 changed files with 3 additions and 2 deletions
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5
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
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@ -6255,6 +6255,9 @@ void SelectionDAG::ReplaceAllUsesWith(SDValue FromN, SDValue To) {
"Cannot replace with this method!");
assert(From != To.getNode() && "Cannot replace uses of with self");
// Preserve Debug Values
TransferDbgValues(FromN, To);
// Iterate over all the existing uses of From. New uses will be added
// to the beginning of the use list, which we avoid visiting.
// This specifically avoids visiting uses of From that arise while the
@ -6285,8 +6288,6 @@ void SelectionDAG::ReplaceAllUsesWith(SDValue FromN, SDValue To) {
AddModifiedNodeToCSEMaps(User);
}
// Preserve Debug Values
TransferDbgValues(FromN, To);
// If we just RAUW'd the root, take note.
if (FromN == getRoot())