[clang] [Clang][OpenCL] Mark scalar loads from constant address space invariant (PR #218356)

[Matt Arsenault via cfe-commits]

================
@@ -0,0 +1,24 @@
+// REQUIRES: amdgpu-registered-target
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -cl-std=CL2.0 -O0 -emit-llvm -o - %s | FileCheck %s --check-prefix=AMDGCN
----------------
arsenm wrote:

```suggestion
// RUN: %clang_cc1 -triple amdgpu7.00-amd-amdhsa -cl-std=CL2.0 -O0 -emit-llvm -o - %s | FileCheck %s --check-prefix=AMDGCN
```

https://github.com/llvm/llvm-project/pull/218356