[all-commits] [llvm/llvm-project] 49b23f: [VPlan] Introduce recipe to build scalar steps.

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 49b23f451cf713036c99573a35daed308d2ac894
      https://github.com/llvm/llvm-project/commit/49b23f451cf713036c99573a35daed308d2ac894
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2022-02-27 (Sun, 27 Feb 2022)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/lib/Transforms/Vectorize/VPlan.cpp
    M llvm/lib/Transforms/Vectorize/VPlan.h
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.h
    M llvm/lib/Transforms/Vectorize/VPlanValue.h
    M llvm/test/Transforms/LoopVectorize/ARM/tail-folding-scalar-epilogue-fallback.ll
    M llvm/test/Transforms/LoopVectorize/PowerPC/optimal-epilog-vectorization.ll
    M llvm/test/Transforms/LoopVectorize/X86/pr36524.ll
    M llvm/test/Transforms/LoopVectorize/float-induction.ll
    M llvm/test/Transforms/LoopVectorize/if-pred-stores.ll
    M llvm/test/Transforms/LoopVectorize/induction.ll
    M llvm/test/Transforms/LoopVectorize/induction_plus.ll
    M llvm/test/Transforms/LoopVectorize/optimal-epilog-vectorization.ll
    M llvm/test/Transforms/LoopVectorize/pointer-induction.ll
    M llvm/test/Transforms/LoopVectorize/reverse_induction.ll
    M llvm/test/Transforms/LoopVectorize/runtime-check-needed-but-empty.ll
    M llvm/test/Transforms/LoopVectorize/use-scalar-epilogue-if-tp-fails.ll
    M llvm/test/Transforms/LoopVectorize/vplan-dot-printing.ll
    M llvm/test/Transforms/LoopVectorize/vplan-printing.ll
    M llvm/test/Transforms/LoopVectorize/vplan-sink-scalars-and-merge-vf1.ll

  Log Message:
  -----------
  [VPlan] Introduce recipe to build scalar steps.

This patch adds a new VPScalarIVStepsRecipe to handle building scalar
steps.

In the first patch, it only handles the case where there is no vector
induction variable needed.

Reviewed By: Ayal

Differential Revision: https://reviews.llvm.org/D115953