[all-commits] [llvm/llvm-project] e34e27: [TTI][AMDGPU] Allow targets to adjust `LastCallToS...

[Shilei Tian via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e34e27f19820af958db7c3b93de7f489aa3bf4dc
      https://github.com/llvm/llvm-project/commit/e34e27f19820af958db7c3b93de7f489aa3bf4dc
  Author: Shilei Tian <i at tianshilei.me>
  Date:   2024-10-11 (Fri, 11 Oct 2024)

  Changed paths:
    M llvm/include/llvm/Analysis/InlineAdvisor.h
    M llvm/include/llvm/Analysis/InlineCost.h
    M llvm/include/llvm/Analysis/TargetTransformInfo.h
    M llvm/include/llvm/Analysis/TargetTransformInfoImpl.h
    M llvm/lib/Analysis/InlineAdvisor.cpp
    M llvm/lib/Analysis/InlineCost.cpp
    M llvm/lib/Analysis/TargetTransformInfo.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.h
    A llvm/test/Transforms/Inline/AMDGPU/amdgpu-inline-only-one-live-use.ll

  Log Message:
  -----------
  [TTI][AMDGPU] Allow targets to adjust `LastCallToStaticBonus` via `getInliningLastCallToStaticBonus`  (#111311)

Currently we will not be able to inline a large function even if it only
has one live use because the inline cost is still very high after
applying `LastCallToStaticBonus`, which is a constant. This could
significantly impact the performance because CSR spill is very
expensive.

This PR adds a new function `getInliningLastCallToStaticBonus` to TTI to
allow targets to customize this value.

Fixes SWDEV-471398.



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