Chandler Carruth 333d5c9f51 [InstCombine] Change LLVM To canonicalize toward the value type being ... stored rather than the pointer type. This change is analogous to r220138 which changed the canonicalization for loads. The rationale is the same: memory does not have a type, operations (and thus the values they produce) have a type. We should match that type as closely as possible rather than reading some form of semantics into the pointer type. With this change, loads and stores should no longer be made with nonsensical types for the values that tehy load and store. This is particularly important when trying to match specific loaded and stored types in the process of doing other instcombines, which is what led me down this twisty maze of miscanonicalization. I've put quite some effort into looking through IR to find places where LLVM's optimizer was being unreasonably conservative in the face of mismatched load and store types, however it is possible (let's say, likely!) I have missed some. If you see regressions here, or from r220138, the likely cause is some part of LLVM failing to cope with load and store types differing. Test cases appreciated, it is important that we root all of these out of LLVM. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222748 91177308-0d34-0410-b5e6-96231b3b80d8		2014-11-25 10:09:51 +00:00
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InstCombine	[InstCombine] Change LLVM To canonicalize toward the value type being	2014-11-25 10:09:51 +00:00
Instrumentation	[asan/coverage] change the way asan coverage instrumentation is done: instead of setting the guard to 1 in the generated code, pass the pointer to guard to __sanitizer_cov and set it there. No user-visible functionality change expected	2014-11-24 18:49:53 +00:00
IPO	Disable header duplication at -Oz in loop-rotate pass.	2014-11-21 19:53:24 +00:00
ObjCARC	Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool>	2014-11-19 07:49:26 +00:00
Scalar	Revert r220349 to re-instate r220277 with a fix for PR21330 -- quite	2014-11-25 08:20:27 +00:00
Utils	SimplifyCFG: Refactor GatherConstantCompares() result in a struct	2014-11-20 22:40:25 +00:00
Vectorize	Masked Vector Load and Store Intrinsics.	2014-11-23 08:07:43 +00:00
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