[all-commits] [llvm/llvm-project] 18f892: [mlir][tosa] Fix mul folder conformance to the spe...

[Luke Hutton via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 18f89283ebac87a153708b8fe00056f96b83022a
      https://github.com/llvm/llvm-project/commit/18f89283ebac87a153708b8fe00056f96b83022a
  Author: Luke Hutton <luke.hutton at arm.com>
  Date:   2025-05-08 (Thu, 08 May 2025)

  Changed paths:
    M mlir/lib/Dialect/Tosa/IR/TosaCanonicalizations.cpp
    M mlir/test/Dialect/Tosa/canonicalize.mlir

  Log Message:
  -----------
  [mlir][tosa] Fix mul folder conformance to the spec (#137601)

Change the folder for mul with a shift such that the rounding happens
correctly according to the spec
pesudo-code.

Fixes:
https://discourse.llvm.org/t/tosa-mul-i32-shift-incorrect-result/86040
Partial cherry-pick from:
https://github.com/llvm/llvm-project/pull/128059

Co-authored-by: Tai Ly <tai.ly at arm.com>



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