[clang] [llvm] [AMDGPU][clang][CodeGen][opt] Add late-resolved feature identifying predicates (PR #134016)

[Erich Keane via llvm-commits]

================
@@ -585,6 +597,23 @@ Value *CodeGenFunction::EmitAMDGPUBuiltinExpr(unsigned BuiltinID,
     llvm::Value *Env = EmitScalarExpr(E->getArg(0));
     return Builder.CreateCall(F, {Env});
   }
+  case AMDGPU::BI__builtin_amdgcn_processor_is: {
+    assert(CGM.getTriple().isSPIRV() &&
+           "__builtin_amdgcn_processor_is should never reach CodeGen for "
+           "concrete targets!");
+    StringRef Proc = cast<clang::StringLiteral>(E->getArg(0))->getString();
+    return GetOrInsertAMDGPUPredicate(*this, "llvm.amdgcn.is." + Proc);
+  }
+  case AMDGPU::BI__builtin_amdgcn_is_invocable: {
+    assert(CGM.getTriple().isSPIRV() &&
+           "__builtin_amdgcn_is_invocable should never reach CodeGen for "
+           "concrete targets!");
+    auto FD = cast<FunctionDecl>(
----------------
erichkeane wrote:

```suggestion
    auto *FD = cast<FunctionDecl>(
```

With auto, we require a * with all pointer types, looks like you've missed a few, so please go back and fix the ones you have.

https://github.com/llvm/llvm-project/pull/134016