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6 Commits

Author SHA1 Message Date
Rafael Espindola
15684b2955 Revert 69952. Causes testsuite failures on linux x86-64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69967 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-24 12:40:33 +00:00
Nate Begeman
b706d29f9c 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
 2009-04-24 03:42:54 +00:00
Anton Korobeynikov
70e616fa0b Use target triple in tests, not 'realign-stack=0' option. Per request. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50778 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 23:09:29 +00:00
Anton Korobeynikov
0e9ddde1cf Disable stack realignment for these tests 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50172 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:25:44 +00:00
Evan Cheng
565ada0b35 Fix test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49343 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-07 17:02:18 +00:00
Evan Cheng
0c0f83ff5d Favors pshufd over shufps when shuffling elements from one vector. pshufd is faster than shufps. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49244 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-05 00:30:36 +00:00