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Author SHA1 Message Date
Simon Pilgrim ef46c2762a [x86, SSE] AVX1 PR28129 (256-bit all-ones rematerialization) 
Further perf tests on Jaguar indicate that:

vxorps  %ymm0, %ymm0, %ymm0
vcmpps  $15, %ymm0, %ymm0, %ymm0

is consistently faster (by about 9%) than:

vpcmpeqd  %xmm0, %xmm0, %xmm0
vinsertf128  $1, %xmm0, %ymm0, %ymm0

Testing equivalent code on a SandyBridge (E5-2640) puts it slightly (~3%) faster as well.

Committed on behalf of @dtemirbulatov

Differential Revision: https://reviews.llvm.org/D32416

llvm-svn: 302989
 2017-05-13 13:42:35 +00:00
Simon Pilgrim 04928fd021 [X86][SSE] Renames all ones test to better match type. 
Added 8f32/4f64 optsize tests discussed on D32416

llvm-svn: 301639
 2017-04-28 11:12:30 +00:00
Craig Topper 4ffe5d5af0 [X86] Expand all-ones-vector test to cover 256-bit and 512-bit vectors. 
llvm-svn: 282472
 2016-09-27 06:44:27 +00:00
Simon Pilgrim 9513b3c4c7 [X86][SSE] More thorough testing of all-ones vectors re-materialization 
llvm-svn: 260889
 2016-02-15 13:50:48 +00:00
Dan Gohman 40503396da Eliminate more uses of llvm-as and llvm-dis. 
llvm-svn: 81290
 2009-09-08 23:54:48 +00:00
Dan Gohman 7354227de0 nounwind-ify this test. 
llvm-svn: 56918
 2008-10-01 15:07:14 +00:00
Dan Gohman f7492cf0ec Fix this test on hosts that don't have sse2. 
llvm-svn: 48296
 2008-03-12 20:40:51 +00:00
Dan Gohman 6616836e71 Add a test to ensure that all-ones vectors are materialized with pcmpeqd. 
llvm-svn: 48247
 2008-03-11 21:37:00 +00:00