[all-commits] [llvm/llvm-project] aaeac3: [flang][TargetRewrite] Keep argument attributes co...

[Slava Zakharin via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: aaeac36566967650fcd63797a10da065eaedd90f
      https://github.com/llvm/llvm-project/commit/aaeac36566967650fcd63797a10da065eaedd90f
  Author: Slava Zakharin <szakharin at nvidia.com>
  Date:   2026-07-07 (Tue, 07 Jul 2026)

  Changed paths:
    M flang/lib/Optimizer/CodeGen/TargetRewrite.cpp
    M flang/test/Fir/target-rewrite-arg-position.fir

  Log Message:
  -----------
  [flang][TargetRewrite] Keep argument attributes consistent after ABI arg shift (#208124)

When target-rewrite expands an argument into several arguments
(for example splitting a complex value into two scalars),
the arguments after it shift to the right.
Argument attributes were only moved for a shift introduced
by result lowering, so an attribute on a later argument
(e.g. fir.host_assoc) could stay on its old index and end up
on an unrelated argument. Remap every saved argument
attribute to the new index of its argument.

This is a consistency fix and may not cause a miscompile today.



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