[all-commits] [llvm/llvm-project] 719658: [fastalloc] Support allocating specific register c...

Luo, Yuanke via All-commits all-commits at lists.llvm.org
Wed Jun 22 23:42:37 PDT 2022

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 719658d078c4093d1ee716fb65ae94673df7b22b
  Author: Luo, Yuanke <yuanke.luo at intel.com>
  Date:   2022-06-23 (Thu, 23 Jun 2022)

  Changed paths:
    M llvm/lib/CodeGen/RegAllocFast.cpp
    M llvm/test/CodeGen/AMDGPU/GlobalISel/image-waterfall-loop-O0.ll
    M llvm/test/CodeGen/AMDGPU/collapse-endcf.ll
    M llvm/test/CodeGen/AMDGPU/control-flow-fastregalloc.ll
    M llvm/test/CodeGen/AMDGPU/indirect-addressing-term.ll
    M llvm/test/CodeGen/AMDGPU/mubuf-legalize-operands.ll
    M llvm/test/CodeGen/AMDGPU/no-source-locations-in-prologue.ll
    M llvm/test/CodeGen/AMDGPU/sgpr-spills-split-regalloc.ll
    M llvm/test/CodeGen/AMDGPU/wwm-reserved-spill.ll

  Log Message:
  [fastalloc] Support allocating specific register class in fastalloc

The base RA support infrastructure that only allow a specific register
class be allocated in RA pss. Since greedy RA, basic RA derived from
base RA, they all allow allocating specific register class. Fast RA
doesn't support allocating register for specific register class. This
patch is to enable ShouldAllocateClass in fast RA, so that it can
support allocating register for specific register class.

Differential Revision: https://reviews.llvm.org/D126771

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