Commit Graph

9 Commits

Author SHA1 Message Date
Craig Topper 577d258569 [DAGCombiner] Teach DAG combiner to fold (vselect (N0 xor AllOnes), N1, N2) -> (vselect N0, N2, N1). Only do this if the target indicates its vector boolean type is ZeroOrNegativeOneBooleanContent.
llvm-svn: 291645
2017-01-11 04:02:23 +00:00
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 c1a46b729b [DAGCombiner] Vector constant folding for comparisons
This patch adds support for vector constant folding of integer/float comparisons.

This requires FoldConstantVectorArithmetic to support scalar constant operands (in this case ISD::CONDCASE). In future we should be able to support other scalar constant types as necessary (and possibly start calling FoldConstantVectorArithmetic for all node creations)

Differential Revision: http://reviews.llvm.org/D14683

llvm-svn: 253504
2015-11-18 21:17:19 +00:00
Simon Pilgrim 35f528262f [DAGCombiner] Added SMAX/SMIN/UMAX/UMIN constant folding
We still need to add constant folding of vector comparisons to fold the tests for targets that don't support the respective min/max nodes

I needed to update 2011-12-06-AVXVectorExtractCombine to load a vector instead of using a constant vector to prevent it folding

Differential Revision: http://reviews.llvm.org/D12118

llvm-svn: 245503
2015-08-19 21:11:58 +00:00
Simon Pilgrim edaba3b7c3 Updated constants to give more useful min/max constant folding tests
llvm-svn: 245348
2015-08-18 20:46:48 +00:00
Simon Pilgrim 9f4374d361 Fixed max/min typo in test names
llvm-svn: 245278
2015-08-18 09:02:51 +00:00
Simon Pilgrim 19ffd57f45 [X86][SSE} Added constant SMAX/SMIN/UMAX/UMIN tests
Constant folding patch to follow soon

llvm-svn: 245276
2015-08-18 08:52:43 +00:00
Simon Pilgrim 1fdc177ccf Renamed min tests (typo)
llvm-svn: 245038
2015-08-14 11:03:31 +00:00
Simon Pilgrim 829091e310 [X86][SSE] Tests for SMAX/SMIN/UMAX/UMIN vector instructions
llvm-svn: 244944
2015-08-13 20:31:03 +00:00