[PATCH] D31411: AMDGPU: Use MachineRegisterInfo to find max used register

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
Herald added subscribers: t-tye, tpr, dstuttard, yaxunl, nhaehnle, wdng, kzhuravl.

Avoid looping through program to determine register counts.
This avoids needing to look at regmask operands.

      

Also fixes some counting errors with flat_scr when there
are no stack objects.


https://reviews.llvm.org/D31411

Files:
  lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
  lib/Target/AMDGPU/AMDGPUAsmPrinter.h
  test/CodeGen/AMDGPU/code-object-metadata-from-llvm-ir-full.ll
  test/CodeGen/AMDGPU/exceed-max-sgprs.ll
  test/CodeGen/AMDGPU/flat-scratch-reg.ll

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