[all-commits] [llvm/llvm-project] c48087: [AArch64][CostModel] Alter sdiv/srem cost where th...

[Sushant Gokhale via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c4808741e89df29dcd06c7be2784824c82f34e46
      https://github.com/llvm/llvm-project/commit/c4808741e89df29dcd06c7be2784824c82f34e46
  Author: Sushant Gokhale <sgokhale at nvidia.com>
  Date:   2025-03-09 (Sun, 09 Mar 2025)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
    M llvm/test/Analysis/CostModel/AArch64/div.ll
    M llvm/test/Analysis/CostModel/AArch64/div_cte.ll
    M llvm/test/Analysis/CostModel/AArch64/rem.ll
    M llvm/test/Analysis/CostModel/AArch64/sve-div.ll
    M llvm/test/Analysis/CostModel/AArch64/sve-rem.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/blend-costs.ll
    M llvm/test/Transforms/SLPVectorizer/AArch64/div.ll

  Log Message:
  -----------
  [AArch64][CostModel] Alter sdiv/srem cost where the divisor is constant (#123552)

This patch revises the cost model for sdiv/srem and draws its inspiration from the udiv/urem patch #122236

The typical codegen for the different scenarios has been mentioned as notes/comments in the code itself( this is done owing to lot of scenarios such that it would be difficult to mention them here in the patch description).



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