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| author | Nate Begeman <natebegeman@mac.com> | 2009-04-27 18:41:29 +0000 |
|---|---|---|
| committer | Nate Begeman <natebegeman@mac.com> | 2009-04-27 18:41:29 +0000 |
| commit | 8d6d4b9289f507553925f24071db83fe044fb5cd (patch) | |
| tree | 29e7a1387eab1209ab9fb5db9459b4d8b948876f /clang/lib/Frontend/PCHWriter.cpp | |
| parent | 5fbe183ce0ee3ddd5d9e8d41fc5f96efba0a6caf (diff) | |
| download | bcm5719-llvm-8d6d4b9289f507553925f24071db83fe044fb5cd.tar.gz bcm5719-llvm-8d6d4b9289f507553925f24071db83fe044fb5cd.zip | |
2nd attempt, fixing SSE4.1 issues and implementing feedback from duncan.
PR2957
ISD::VECTOR_SHUFFLE now stores an array of integers representing the shuffle
mask internal to the node, rather than taking a BUILD_VECTOR of ConstantSDNodes
as the shuffle mask. A value of -1 represents UNDEF.
In addition to eliminating the creation of illegal BUILD_VECTORS just to
represent shuffle masks, we are better about canonicalizing the shuffle mask,
resulting in substantially better code for some classes of shuffles.
llvm-svn: 70225
Diffstat (limited to 'clang/lib/Frontend/PCHWriter.cpp')
0 files changed, 0 insertions, 0 deletions
