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Author SHA1 Message Date
Simon Pilgrim 8deb87a6c0 [DAGCombiner] Improve MatchBswapHword logic (PR31357) 
The existing code only looks at half of the tree when matching bswap + rol patterns ending in an OR tree (as opposed to a cascade).

Patch originally introduced by Jim Lewis.

Submitted on the behalf of Dinar Temirbulatov.

Differential Revision: https://reviews.llvm.org/D32039

llvm-svn: 301907
 2017-05-02 10:16:19 +00:00
Simon Pilgrim 94d5dba8ae [X86] Add D32039/PR31357 tests to show current BSWAP codegen 
llvm-svn: 300672
 2017-04-19 11:06:22 +00:00