[clang] [CodeGen] Fix emission of function pointer casts with non-zero program AS (PR #186210)

[Nick Sarnie via cfe-commits]

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@@ -0,0 +1,34 @@
+// RUN: %clang_cc1 -triple spirv64-intel %s -emit-llvm -o - | FileCheck %s
+
+// Test that function pointer casts properly handle address space conversions
+// on targets like spirv64-intel that use a non-default program address space.
+
+void foo() {}
+
+// CHECK-LABEL: define spir_func void @_Z21test_func_to_void_ptrv() addrspace(9)
+void test_func_to_void_ptr() {
+    void *ptr = (void*)foo;
+    // CHECK: store ptr addrspace(4) addrspacecast (ptr addrspace(9) @_Z3foov to ptr addrspace(4))
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sarnex wrote:

Thanks for the quick review guys. Do you guys have any other comments? If not I'd appreciate an approval :)

https://github.com/llvm/llvm-project/pull/186210