[PATCH] D19894: AMDGPU: Fix not counting shader input registers

[Matt Arsenault via llvm-commits]

arsenm created this revision.
arsenm added reviewers: tstellarAMD, nhaehnle, mareko.
arsenm added a subscriber: llvm-commits.
Herald added subscribers: arsenm, qcolombet.

The user specified shader inputs were not counting towards
the total user SGPR count, so it was possible to request
more than are possible, as well as report fewer registers
than really used.

http://reviews.llvm.org/D19894

Files:
  lib/Target/AMDGPU/SIISelLowering.cpp
  lib/Target/AMDGPU/SIMachineFunctionInfo.cpp
  lib/Target/AMDGPU/SIMachineFunctionInfo.h
  lib/Target/AMDGPU/SIRegisterInfo.cpp
  lib/Target/AMDGPU/SIRegisterInfo.h
  test/CodeGen/AMDGPU/amdgpu-shader-calling-convention.ll
  test/CodeGen/AMDGPU/llvm.amdgcn.image.ll
  test/CodeGen/AMDGPU/vgpr-spill-emergency-stack-slot.ll

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