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| author | Dan Gohman <gohman@apple.com> | 2009-04-27 02:00:55 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-04-27 02:00:55 +0000 |
| commit | c7b3444095f9aa5398d134c780e327a187cda231 (patch) | |
| tree | 4a1567e3145693dd2b1e2b880daf266b8f7b4231 /lib/CodeGen | |
| parent | d6c329532bed7a60f760b3a009b3582c624bc270 (diff) | |
| download | external_llvm-c7b3444095f9aa5398d134c780e327a187cda231.zip external_llvm-c7b3444095f9aa5398d134c780e327a187cda231.tar.gz external_llvm-c7b3444095f9aa5398d134c780e327a187cda231.tar.bz2 | |
When transforming sext(trunc(load(x))) into sext(smaller load(x)),
the trunc is directly replaced with the smaller load, so don't
try to create a new sext node. This fixes PR4050.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70179 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index b937eaf..bd4b10e 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -2962,7 +2962,7 @@ SDValue DAGCombiner::visitSIGN_EXTEND(SDNode *N) { if (NarrowLoad.getNode()) { if (NarrowLoad.getNode() != N0.getNode()) CombineTo(N0.getNode(), NarrowLoad); - return DAG.getNode(ISD::SIGN_EXTEND, N->getDebugLoc(), VT, NarrowLoad); + return SDValue(N, 0); // Return N so it doesn't get rechecked! } // See if the value being truncated is already sign extended. If so, just |