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------------------------------------------------------------------------ r268259 | nhaehnle | 2016-05-02 10:37:01 -0700 (Mon, 02 May 2016) | 14 lines AMDGPU: llvm.SI.fs.constant is a source of divergence Summary: This intrinsic is used to get flat-shaded fragment shader inputs. Those are uniform across a primitive, but a fragment shader wave may process pixels from multiple primitives (as indicated by the prim_mask), and so that's where divergence can arise. Reviewers: arsenm, tstellarAMD Subscribers: arsenm, llvm-commits Differential Revision: http://reviews.llvm.org/D19747 ------------------------------------------------------------------------ llvm-svn: 271769
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