Sanjay Patel 5a48aef3f0 [x86, MemCmpExpansion] allow 2 pairs of loads per block (PR33325) ... This is the last step needed to fix PR33325: https://bugs.llvm.org/show_bug.cgi?id=33325 We're trading branch and compares for loads and logic ops. This makes the code smaller and hopefully faster in most cases. The 24-byte test shows an interesting construct: we load the trailing scalar elements into vector registers and generate the same pcmpeq+movmsk code that we expected for a pair of full vector elements (see the 32- and 64-byte tests). Differential Revision: https://reviews.llvm.org/D41714 llvm-svn: 321934		2018-01-06 16:16:04 +00:00
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X86	[x86, MemCmpExpansion] allow 2 pairs of loads per block (PR33325)	2018-01-06 16:16:04 +00:00