[llvm] Local: Handle noalias.addrspace in copyMetadataForLoad (PR #130123)

[Matt Arsenault via llvm-commits]

https://github.com/arsenm created https://github.com/llvm/llvm-project/pull/130123

None

>From bacb77f162e7b7030beb2616988219895a56df79 Mon Sep 17 00:00:00 2001
From: Matt Arsenault <Matthew.Arsenault at amd.com>
Date: Wed, 14 Aug 2024 16:51:08 +0400
Subject: [PATCH] Local: Handle noalias.addrspace in copyMetadataForLoad

---
 llvm/lib/Transforms/Utils/Local.cpp                    | 1 +
 llvm/test/Transforms/InstCombine/loadstore-metadata.ll | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/Transforms/Utils/Local.cpp b/llvm/lib/Transforms/Utils/Local.cpp
index 6d7c710020c3e..95f0d099aacb5 100644
--- a/llvm/lib/Transforms/Utils/Local.cpp
+++ b/llvm/lib/Transforms/Utils/Local.cpp
@@ -3460,6 +3460,7 @@ void llvm::copyMetadataForLoad(LoadInst &Dest, const LoadInst &Source) {
     case LLVMContext::MD_mem_parallel_loop_access:
     case LLVMContext::MD_access_group:
     case LLVMContext::MD_noundef:
+    case LLVMContext::MD_noalias_addrspace:
       // All of these directly apply.
       Dest.setMetadata(ID, N);
       break;
diff --git a/llvm/test/Transforms/InstCombine/loadstore-metadata.ll b/llvm/test/Transforms/InstCombine/loadstore-metadata.ll
index 5a977882504ce..859c9b892f156 100644
--- a/llvm/test/Transforms/InstCombine/loadstore-metadata.ll
+++ b/llvm/test/Transforms/InstCombine/loadstore-metadata.ll
@@ -177,7 +177,7 @@ define i32 @test_load_cast_combine_noalias_addrspace(ptr %ptr) {
 ; Ensure (cast (load (...))) -> (load (cast (...))) preserves TBAA.
 ; CHECK-LABEL: @test_load_cast_combine_noalias_addrspace(
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[L1:%.*]] = load i32, ptr [[PTR:%.*]], align 4
+; CHECK-NEXT:    [[L1:%.*]] = load i32, ptr [[PTR:%.*]], align 4, !noalias.addrspace [[META10:![0-9]+]]
 ; CHECK-NEXT:    ret i32 [[L1]]
 ;
 entry: