[all-commits] [llvm/llvm-project] 20744d: [CIR] Drop res_attrs when a rewritten return has n...

[Adam Smith via All-commits]

  Branch: refs/heads/users/adams381/cir-callconv-x86_64-bitint-wide
  Home:   https://github.com/llvm/llvm-project
  Commit: 20744da19e9fd484d5c8cc267b384bf228948637
      https://github.com/llvm/llvm-project/commit/20744da19e9fd484d5c8cc267b384bf228948637
  Author: Adam Smith <adams at nvidia.com>
  Date:   2026-09-09 (Wed, 09 Sep 2026)

  Changed paths:
    M clang/lib/CIR/Dialect/Transforms/TargetLowering/CIRABIRewriteContext.cpp
    A clang/test/CIR/Transforms/abi-lowering/dropped-return-res-attrs.cir

  Log Message:
  -----------
  [CIR] Drop res_attrs when a rewritten return has no result

An Indirect return moves the value to an sret pointer argument the pass
inserts, and an Ignore return drops it, so the rewritten func or call
has no result for the per-result `res_attrs` array to describe.  The
function rewrite and both call rewrites now remove it.

Assisted-by: Cursor / claude-opus-5



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