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Author SHA1 Message Date
Sanjay Patel 30265d0a47 [x86] add tests to show missed constant shrinking (PR35907); NFC 
llvm-svn: 322523
 2018-01-15 21:57:41 +00:00
Sanjay Patel fc74f71400 [x86] regenerate test checks; NFC 
llvm-svn: 322522
 2018-01-15 21:32:39 +00:00
Elena Demikhovsky e5bbca6ae2 Optimized loading (zextload) of i1 value from memory. 
This patch is a partial revert of https://llvm.org/svn/llvm-project/llvm/trunk@237793.
Extra "and" causes performance degradation.

We assume that i1 is stored in zero-extended form. And store operation is responsible for zeroing upper bits.

Differential Revision: http://reviews.llvm.org/D17541

llvm-svn: 261828
 2016-02-25 07:05:12 +00:00
Rafael Espindola 494a381ede Use small encodings for constants when possible. 
llvm-svn: 242493
 2015-07-17 00:57:52 +00:00