maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
216,451 Commits 23 Branches 0 Tags 2.2 GiB
Commit Graph

6 Commits

Author SHA1 Message Date
James Y Knight 7c905063c5 Make utils/update_llc_test_checks.py note that the assertions are 
autogenerated.

Also update existing test cases which appear to be generated by it and
weren't modified (other than addition of the header) by rerunning it.

llvm-svn: 253917
 2015-11-23 21:33:58 +00:00
Simon Pilgrim d0448ee59f [X86][SSE] Vectorize CTTZ + CTTZ_ZERO_UNDEF 
Now that we have fast vector CTPOP implementations we can use this to speed up vector CTTZ using the pattern (cttz(x) = ctpop((x & -x) - 1))

Additionally, for AVX512CD that provides lzcnt instructions we can use the pattern (cttz_undef(x) = (width - 1) - ctlz(x & -x))

Differential Revision: http://reviews.llvm.org/D12663

llvm-svn: 248091
 2015-09-19 13:22:57 +00:00
Simon Pilgrim 5cce4381ab [X86] Updated vector tzcnt tests. Added vec512 tests. 
llvm-svn: 246922
 2015-09-05 10:19:07 +00:00
Simon Pilgrim 23a29dafda [X86][SSE] Tidied up vector CTLZ/CTTZ. NFCI. 
llvm-svn: 242645
 2015-07-19 17:09:43 +00:00
Simon Pilgrim c789e1d57b [DAGCombiner] Added CTTZ vector constant folding support. 
llvm-svn: 239293
 2015-06-08 09:57:09 +00:00
Simon Pilgrim 856fc94a2f [X86] Added tzcnt vector tests. 
llvm-svn: 239264
 2015-06-07 21:01:34 +00:00