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| author | Dan Gohman <gohman@apple.com> | 2007-07-09 20:49:44 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2007-07-09 20:49:44 +0000 |
| commit | 6decfbf1332dda75c05d49d241409bc95ae7cf0e (patch) | |
| tree | b72de0a43b1b7233bda1e27f3bd55c206a01726e /llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp | |
| parent | aee901745de3effeb000f66714bad39abbebfcca (diff) | |
| download | bcm5719-llvm-6decfbf1332dda75c05d49d241409bc95ae7cf0e.tar.gz bcm5719-llvm-6decfbf1332dda75c05d49d241409bc95ae7cf0e.zip | |
Initialize the IndexedModeActions array with memset before
updating it with calls to setIndexedLoadAction/setIndexedStoreAction,
which only update a few bits at a time. This avoids ostensible
undefined behavior of operationg on values which may be
trap-representations, and as a practical matter fixes errors from
valgrind, which doesn't track uninitialized memory with bit
granularity.
llvm-svn: 38468
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp index 44faf24b064..1b7b436b031 100644 --- a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp @@ -128,7 +128,9 @@ TargetLowering::TargetLowering(TargetMachine &tm) memset(OpActions, 0, sizeof(OpActions)); memset(LoadXActions, 0, sizeof(LoadXActions)); memset(&StoreXActions, 0, sizeof(StoreXActions)); - // Initialize all indexed load / store to expand. + memset(&IndexedModeActions, 0, sizeof(IndexedModeActions)); + + // Set all indexed load / store to expand. for (unsigned VT = 0; VT != (unsigned)MVT::LAST_VALUETYPE; ++VT) { for (unsigned IM = (unsigned)ISD::PRE_INC; IM != (unsigned)ISD::LAST_INDEXED_MODE; ++IM) { |
