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| author | Hal Finkel <hfinkel@anl.gov> | 2012-06-20 15:42:48 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2012-06-20 15:42:48 +0000 |
| commit | d65e463ff9327d168e8389e5c9a9f16a601be8a5 (patch) | |
| tree | f792d59de68a0356bfa4a932f51f1d5fa3fcbcf8 /lib/CodeGen/SelectionDAG/DAGCombiner.cpp | |
| parent | 9905dbc3798b262c02637d528131ea536a1614b7 (diff) | |
Fix DAGCombine to deal with ext-conversion of pre/post_inc loads.
The test case for this will come with the PPC indexed preinc loads commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158822 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 3517b7cfbe..4b56e41b72 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -2524,7 +2524,14 @@ SDValue DAGCombiner::visitAND(SDNode *N) { Load->getOffset(), Load->getMemoryVT(), Load->getMemOperand()); // Replace uses of the EXTLOAD with the new ZEXTLOAD. - CombineTo(Load, NewLoad.getValue(0), NewLoad.getValue(1)); + if (Load->getNumValues() == 3) { + // PRE/POST_INC loads have 3 values. + SDValue To[] = { NewLoad.getValue(0), NewLoad.getValue(1), + NewLoad.getValue(2) }; + CombineTo(Load, To, 3, true); + } else { + CombineTo(Load, NewLoad.getValue(0), NewLoad.getValue(1)); + } } // Fold the AND away, taking care not to fold to the old load node if we |