[all-commits] [llvm/llvm-project] 52a9c4: Reland "[RISCV] AddEdge between mask producer and...

[Liao Chunyu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 52a9c493e62c8af8f1299cae0babb92f2693065b
      https://github.com/llvm/llvm-project/commit/52a9c493e62c8af8f1299cae0babb92f2693065b
  Author: Liao Chunyu <chunyu at iscas.ac.cn>
  Date:   2025-07-18 (Fri, 18 Jul 2025)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVVectorMaskDAGMutation.cpp
    M llvm/test/CodeGen/RISCV/rvv/combine-reduce-add-to-vcpop.ll
    M llvm/test/CodeGen/RISCV/rvv/extractelt-i1.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-extract-i1.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-shuffle-deinterleave.ll
    A llvm/test/CodeGen/RISCV/rvv/reproducer-pr146855.ll
    M llvm/test/CodeGen/RISCV/rvv/vscale-vw-web-simplification.ll
    M llvm/test/CodeGen/RISCV/rvv/vselect-fp.ll

  Log Message:
  -----------
   Reland "[RISCV] AddEdge between mask producer and user of V0 (#146855)" (#148566)

The defmask vector cannot contain instructions that use V0. 

for `MultiSource/Benchmarks/DOE-ProxyApps-C++/CLAMR/mesh.cpp`
Save `%173:vrm2nov0 = PseudoVMERGE_VVM_M2 undef %173:vrm2nov0(tied-def
0), %116:vrm2, %173:vrm2nov0, killed $v0, -1, 5 `to def mask caused crash.



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