gccrs: [E0093] Declaration of unknown intrinsic function

Refactored error message similiar to rustc.

gcc/rust/ChangeLog:

	* backend/rust-compile-intrinsic.cc (Intrinsics::compile):
	called error function.

gcc/testsuite/ChangeLog:

	* rust/compile/torture/intrinsics-3.rs: Updated comment to pass the test case.

Signed-off-by: Muhammad Mahad <mahadtxt@gmail.com>

gcc/rust/backend/rust-compile-intrinsic.cc

@@ -228,7 +228,8 @@ Intrinsics::compile (TyTy::FnType *fntype)
     return it->second (ctx, fntype);
 
   Location locus = ctx->get_mappings ()->lookup_location (fntype->get_ref ());
-  rust_error_at (locus, "unknown builtin intrinsic: %s",
+  rust_error_at (locus, ErrorCode ("E0093"),
+		 "unrecognized intrinsic function: %<%s%>",
 		 fntype->get_identifier ().c_str ());
 
   return error_mark_node;

gcc/testsuite/rust/compile/torture/intrinsics-3.rs

@@ -5,5 +5,5 @@ extern "rust-intrinsic" {
 }
 
 fn main() {
-    unsafe { not_an_intrinsic() }; // { dg-error "unknown builtin intrinsic: not_an_intrinsic" }
+    unsafe { not_an_intrinsic() }; // { dg-error "unrecognized intrinsic function: .not_an_intrinsic." }
 }