[all-commits] [llvm/llvm-project] b582b6: [RISCV] Add FMA support to combineOp_VLToVWOp_VL. ...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b582b658d60fb23ce39c48b42be265093e5e889d
      https://github.com/llvm/llvm-project/commit/b582b658d60fb23ce39c48b42be265093e5e889d
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2024-07-26 (Fri, 26 Jul 2024)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vfw-web-simplification.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vfwmacc.ll

  Log Message:
  -----------
  [RISCV] Add FMA support to combineOp_VLToVWOp_VL. (#100454)

This adds FMA to the widening web support we have for add, sub, mul, and
shl.

Extra care needs to be taken to not widen the third FMA operand.



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