[all-commits] [llvm/llvm-project] 2c1b71: [VPlan] Compute URem via APInt in materializeVecto...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2c1b71af78df9d7c22e225069971d3276d91d546
      https://github.com/llvm/llvm-project/commit/2c1b71af78df9d7c22e225069971d3276d91d546
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2026-06-12 (Fri, 12 Jun 2026)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    A llvm/test/Transforms/LoopVectorize/RISCV/i128-trip-count-evl.ll

  Log Message:
  -----------
  [VPlan] Compute URem via APInt in materializeVectorTripCount (#203604)

materializeVectorTripCount has a shortcut for scalable steps: if the
constant trip count is divisible by the maximum possible runtime step,
the vector trip count equals the trip count directly. This called
APInt::getZExtValue unconditionally, which asserts when the constant
value needs more than 64 bits.

Compute the URem in APInt to fix the crash.



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