[llvm] [Attributor] Pack out arguments into a struct (PR #119267)

[Matt Arsenault via llvm-commits]

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+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
+; RUN: opt -S -passes=attributor < %s | FileCheck %s
+
+
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arsenm wrote:

This needs about 100 more tests llvm/test/CodeGen/AMDGPU/rewrite-out-arguments.ll and llvm/test/CodeGen/AMDGPU/rewrite-out-arguments-address-space.ll would be better starting points 

https://github.com/llvm/llvm-project/pull/119267