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3 Commits

Author SHA1 Message Date
Craig Topper 5439b3d1e5 [X86] Fix a potential crash that occur after r333419. 
The code could issue a truncate from a small type to larger type. We need to extend in that case instead.

llvm-svn: 333460
 2018-05-29 20:04:10 +00:00
Alexander Ivchenko 96062eaa8e [X86] Scalar mask and scalar move optimizations 
1. Introduction of mask scalar TableGen patterns.
2. Introduction of new scalar move TableGen patterns
   and refactoring of existing ones.
3. Folding of pattern created by introducing scalar
   masking in Clang header files.

Patch by tkrupa

Differential Revision: https://reviews.llvm.org/D47012

llvm-svn: 333419
 2018-05-29 14:27:11 +00:00
Craig Topper a010b3c9dc [X86] Add test cases for D47012. 
Patch by Thomasz Krupa.

llvm-svn: 332872
 2018-05-21 19:33:42 +00:00