[llvm] [AMDGPU] Propagate alias information in AMDGPULowerKernelArguments. (PR #144714)

[Shilei Tian via llvm-commits]

================
@@ -1353,10 +1358,49 @@ static void AddAliasScopeMetadata(CallBase &CB, ValueToValueMapTy &VMap,
             LLVMContext::MD_alias_scope,
             MDNode::concatenate(NI->getMetadata(LLVMContext::MD_alias_scope),
                                 MDNode::get(CalledFunc->getContext(), Scopes)));
+    };
+
+    if (VMap) {
+      assert(InlinedFunctionInfo);
+
+      for (ValueToValueMapTy::iterator VMI = VMap->begin(), VMIE = VMap->end();
+           VMI != VMIE; ++VMI) {
+        const Instruction *I = dyn_cast<Instruction>(VMI->first);
+        if (!I || !VMI->second)
+          continue;
+
+        Instruction *NI = dyn_cast<Instruction>(VMI->second);
+        if (!NI || InlinedFunctionInfo->isSimplified(I, NI))
+          continue;
+
+        addAliasMD(I, NI);
+      }
+
+    } else {
+      for (auto It = inst_begin(F), End = inst_end(F); It != End; ++It) {
+        Instruction *I = &(*It);
+        addAliasMD(I, I);
+      }
     }
   }
 }
 
+void llvm::addAliasScopeMetadata(CallBase &CB, ValueToValueMapTy &VMap,
+                                 const DataLayout &DL, AAResults *CalleeAAR,
+                                 ClonedCodeInfo &InlinedFunctionInfo,
+                                 bool UseNoAliasIntrinsic) {
+  addAliasScopeMetadataImpl(&CB, /* F */ nullptr, &VMap, DL, CalleeAAR,
+                            &InlinedFunctionInfo, UseNoAliasIntrinsic);
+}
+
+void llvm::addAliasScopeMetadata(Function &F) {
+  addAliasScopeMetadataImpl(/* CB */ nullptr, &F, /* VMap */ nullptr,
+                            F.getParent()->getDataLayout(),
+                            /* CalleeAAR */ nullptr,
+                            /* InlinedFunctionInfo */ nullptr,
+                            /* UseNoAliasIntrinsic */ false);
----------------
shiltian wrote:

Use the new style such as `/*CB=*/` pls.

https://github.com/llvm/llvm-project/pull/144714