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Author SHA1 Message Date
Changpeng Fang 71369b3a39 AMDGPU/SI: Enable load-store-opt by default. 
Summary: Enable load-store-opt by default, and update LIT tests.

Reviewers: arsenm

Differential Revision: http://reviews.llvm.org/D20694

llvm-svn: 270894
 2016-05-26 19:35:29 +00:00
Matt Arsenault 10aa807856 PeepholeOptimizer: Remove redundant copies 
If a virtual register is copied and another copy was already
seen, replace with the previous copy. This only handles the
simplest cases for now.

This pattern shows up from various operand restrictions
AMDGPU has which require inserting copies depending
on the register class of the operands.

llvm-svn: 248611
 2015-09-25 20:22:12 +00:00
Tom Stellard 45bb48ea19 R600 -> AMDGPU rename 
llvm-svn: 239657
 2015-06-13 03:28:10 +00:00