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Author SHA1 Message Date
Simon Pilgrim 8c4abd20eb [InstCombine] Make x86 PADDS/PSUBS constant folding tests generic 
As discussed on D55894, this replaces the existing PADDS/PSUBUS intrinsics with the the sadd/ssub.sat generic intrinsics and moves the tests out of the x86 subfolder.

PR40110 has been raised to fix the regression with constant folding vectors containing undef elements.

llvm-svn: 349759
 2018-12-20 13:50:12 +00:00