[all-commits] [llvm/llvm-project] 4a7b56: [MLIR][Arith] Add denormal attribute to binary/una...

[lorenzo chelini via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4a7b56e6e7dd0f83c379ad06b6e81450bc691ba6
      https://github.com/llvm/llvm-project/commit/4a7b56e6e7dd0f83c379ad06b6e81450bc691ba6
  Author: lorenzo chelini <l.chelini at icloud.com>
  Date:   2024-11-26 (Tue, 26 Nov 2024)

  Changed paths:
    M mlir/include/mlir/Conversion/ArithCommon/AttrToLLVMConverter.h
    M mlir/include/mlir/Dialect/Arith/IR/ArithBase.td
    M mlir/include/mlir/Dialect/Arith/IR/ArithOps.td
    M mlir/include/mlir/Dialect/Arith/IR/ArithOpsInterfaces.td
    M mlir/include/mlir/IR/Matchers.h
    M mlir/lib/Conversion/ArithToLLVM/ArithToLLVM.cpp
    M mlir/lib/Dialect/Arith/IR/ArithCanonicalization.td
    M mlir/lib/Dialect/Arith/IR/ArithOps.cpp
    M mlir/lib/Dialect/Linalg/IR/LinalgOps.cpp
    M mlir/test/CAPI/ir.c
    M mlir/test/Dialect/Arith/canonicalize.mlir
    M mlir/test/Dialect/Arith/ops.mlir
    M mlir/test/Dialect/Linalg/invalid.mlir

  Log Message:
  -----------
  [MLIR][Arith] Add denormal attribute to binary/unary operations (#112700)

Add support for denormal in the Arith dialect (binary and unary
operations).
Denormal are attached to every operation, and they can be of three
different
kinds:

1) ieee, denormal are preserved and processed as defined by IEEE 754
rules.

2) preserve sign, a mode where denormal numbers are flushed to zero, but
the
sign of the zero (+0 or -0) is preserved.

3) positive zero, a mode where all denormal numbers are flushed to
positive zero
(+0), ignoring the sign of the original number.

Denormal refers to both the operands and the result. Currently only
lowering for
ieee is supported.



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