[all-commits] [llvm/llvm-project] 0b8cb8: [MLIR][STD] Add safe scalar constant propagation f...

[Max Kudryavtsev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0b8cb87e0d6b092a9c94f9cc0f16e56e954eddfd
      https://github.com/llvm/llvm-project/commit/0b8cb87e0d6b092a9c94f9cc0f16e56e954eddfd
  Author: Max Kudryavtsev <makudrya at microsoft.com>
  Date:   2021-08-06 (Fri, 06 Aug 2021)

  Changed paths:
    M mlir/include/mlir/Dialect/StandardOps/IR/Ops.td
    M mlir/lib/Dialect/StandardOps/IR/Ops.cpp
    M mlir/test/Dialect/Linalg/generalize-named-polymorphic-ops.mlir
    M mlir/test/Dialect/Standard/canonicalize.mlir

  Log Message:
  -----------
  [MLIR][STD] Add safe scalar constant propagation for FPTruncOp

Perform scalar constant propagation for FPTruncOp only if the resulting value can be represented without precision loss or rounding.

Example:
%cst = constant 1.000000e+00 : f32
%0 = fptrunc %cst : f32 to bf16
-->
%cst = constant 1.000000e+00 : bf16

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D107518