[clang] [WIP][AMDGPU] Support for type inferring image load/store builtins for AMDGPU (PR #140210)

[Shilei Tian via cfe-commits]

================
@@ -683,6 +683,30 @@ Value *CodeGenFunction::EmitAMDGPUBuiltinExpr(unsigned BuiltinID,
 
     return Builder.CreateInsertElement(I0, A, 1);
   }
+  case AMDGPU::BI__builtin_amdgcn_image_load_2d_f32_i32: {
+    llvm::Type *RetTy = llvm::Type::getFloatTy(Builder.getContext());
+    llvm::Type *IntTy = llvm::IntegerType::get(Builder.getContext(), 32u);
+
+    llvm::Value *imm0 = llvm::ConstantInt::get(IntTy, 1);
----------------
shiltian wrote:

```suggestion
    llvm::Value *Imm0 = llvm::ConstantInt::get(IntTy, 1);
```

https://github.com/llvm/llvm-project/pull/140210