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| author | Nate Begeman <natebegeman@mac.com> | 2009-04-24 03:42:54 +0000 |
|---|---|---|
| committer | Nate Begeman <natebegeman@mac.com> | 2009-04-24 03:42:54 +0000 |
| commit | da17a81c88162e6dfc070f18b14e34f194697407 (patch) | |
| tree | 105e75ce0dc135a208ef085ba4f70fe162031ff1 /lib/CodeGen/LiveInterval.cpp | |
| parent | bbb69ba45e6b90251bebed4f3a76456d9d51f903 (diff) | |
| download | external_llvm-da17a81c88162e6dfc070f18b14e34f194697407.zip external_llvm-da17a81c88162e6dfc070f18b14e34f194697407.tar.gz external_llvm-da17a81c88162e6dfc070f18b14e34f194697407.tar.bz2 | |
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.
A clean up of x86 shuffle code, and some canonicalizing in DAGCombiner is next.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69952 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LiveInterval.cpp')
0 files changed, 0 insertions, 0 deletions