diff options
| author | Mon P Wang <wangmp@apple.com> | 2008-11-23 04:35:05 +0000 |
|---|---|---|
| committer | Mon P Wang <wangmp@apple.com> | 2008-11-23 04:35:05 +0000 |
| commit | 2967480f54bfcdc6243b59d559cc6e7ad5b791a2 (patch) | |
| tree | 249f4b05cc8b2bb31028ce8c43776063e2c64e0b /llvm/lib/CodeGen | |
| parent | cdf25053eef45823c1aa756a1ef5f13c820616b4 (diff) | |
| download | bcm5719-llvm-2967480f54bfcdc6243b59d559cc6e7ad5b791a2.tar.gz bcm5719-llvm-2967480f54bfcdc6243b59d559cc6e7ad5b791a2.zip | |
Added check to avoid generating extract subvector beyond the end of the vector when normalizing vector shuffles.
llvm-svn: 59900
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp index 94170420d0f..f3948f9ee8a 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp @@ -2423,7 +2423,8 @@ void SelectionDAGLowering::visitShuffleVector(User &I) { StartIdx[Input] = 0; } else { StartIdx[Input] = (MinRange[Input]/MaskNumElts)*MaskNumElts; - if (MaxRange[Input] - StartIdx[Input] < MaskNumElts) + if (MaxRange[Input] - StartIdx[Input] < MaskNumElts && + StartIdx[Input] + MaskNumElts < SrcNumElts) RangeUse[Input] = 1; // Extract from a multiple of the mask length. } } |
