[all-commits] [llvm/llvm-project] cf2ecc: [LV] Remove over-aggressive assert from 3fe6a064f15c.

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cf2ecc7c1c24dee6e3b70a836474a5ac553829b3
      https://github.com/llvm/llvm-project/commit/cf2ecc7c1c24dee6e3b70a836474a5ac553829b3
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2024-09-05 (Thu, 05 Sep 2024)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/test/Transforms/LoopVectorize/RISCV/truncate-to-minimal-bitwidth-cost.ll

  Log Message:
  -----------
  [LV] Remove over-aggressive assert from 3fe6a064f15c.

There are some cases where only the first operand is marked for
truncation. In that case, the compare won't be truncated which would
incorrectly trigger the assertion.

It also shows that the check pre 3fe6a064f15c also considered compares
truncated that cannot be truncated.



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