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Stanislav Mekhanoshin 3f2c8aa170 [AMDGPU] Add wave barrier builtin 
The wave barrier represents the discardable barrier. Its main purpose is to
carry convergent attribute, thus preventing illegal CFG optimizations. All lanes
in a wave come to convergence point simultaneously with SIMT, thus no special
instruction is needed in the ISA. The barrier is discarded during code generation.

Differential Revision: https://reviews.llvm.org/D26585

llvm-svn: 287007
2016-11-15 19:00:15 +00:00
..
llvm [AMDGPU] Add wave barrier builtin 2016-11-15 19:00:15 +00:00
llvm-c Kill deprecated attribute API 2016-11-06 07:48:46 +00:00