[all-commits] [llvm/llvm-project] 30f9e6: (Reland) [fastalloc] Support allocating specific r...

[Luo, Yuanke via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 30f9e6ebd30b79d13f99eaca4d829e0da07186b3
      https://github.com/llvm/llvm-project/commit/30f9e6ebd30b79d13f99eaca4d829e0da07186b3
  Author: Luo, Yuanke <yuanke.luo at intel.com>
  Date:   2022-08-13 (Sat, 13 Aug 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/cf-loop-on-constant.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:
  -----------
  (Reland) [fastalloc] Support allocating specific register class in fastalloc

Reland commit 719658d078c4

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/D131825