[llvm] [IPO] Added attributor for identifying invariant loads (PR #141800)

[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 -mtriple=amdgcn-amd-amdhsa -passes=attributor %s -S | FileCheck %s --check-prefix=AMDGCN
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arsenm wrote:

Probably needs to be in AMDGPU subdirectory or REQUIRES: amdgpu-registered-target 

https://github.com/llvm/llvm-project/pull/141800