Marek Olsak 8a0f335ad6 AMDGPU/SI: Add support for non-void functions ...

Summary:
Return values can be stored in SGPRs (i32) and VGPRs (f32).

This will be used by functions which expect some bytecode or other binary to
be appended at the end. It allows defining in which registers the return
values will be stored.

v2: don't do this for compute shaders

Reviewers: tstellarAMD, arsenm

Subscribers: arsenm

Differential Revision: http://reviews.llvm.org/D16033

llvm-svn: 257621

2016-01-13 17:23:04 +00:00

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