split out va_list forwarding into its own test

Author: folkertdev

tests/codegen-llvm/cffi/c-variadic-va_list.rs

@@ -0,0 +1,36 @@
+//@ needs-unwind
+//@ compile-flags: -Copt-level=3
+//@ min-llvm-version: 21
+
+#![crate_type = "lib"]
+#![feature(c_variadic)]
+#![no_std]
+use core::ffi::VaList;
+
+// Ensure that we do not remove the `va_list` passed to the foreign function when
+// removing the "spoofed" `VaList` that is used by Rust defined C-variadics.
+
+extern "C" {
+    fn foreign_c_variadic_1(_: VaList, ...);
+}
+
+// CHECK-LABEL: use_foreign_c_variadic_1_0
+pub unsafe extern "C" fn use_foreign_c_variadic_1_0(ap: VaList) {
+    // CHECK: call void ({{.*}}, ...) @foreign_c_variadic_1({{.*}} %ap)
+    foreign_c_variadic_1(ap);
+}
+
+// CHECK-LABEL: use_foreign_c_variadic_1_1
+pub unsafe extern "C" fn use_foreign_c_variadic_1_1(ap: VaList) {
+    // CHECK: call void ({{.*}}, ...) @foreign_c_variadic_1({{.*}} %ap, i32 noundef 42)
+    foreign_c_variadic_1(ap, 42i32);
+}
+pub unsafe extern "C" fn use_foreign_c_variadic_1_2(ap: VaList) {
+    // CHECK: call void ({{.*}}, ...) @foreign_c_variadic_1({{.*}} %ap, i32 noundef 2, i32 noundef 42)
+    foreign_c_variadic_1(ap, 2i32, 42i32);
+}
+
+pub unsafe extern "C" fn use_foreign_c_variadic_1_3(ap: VaList) {
+    // CHECK: call void ({{.*}}, ...) @foreign_c_variadic_1({{.*}} %ap, i32 noundef 2, i32 noundef 42, i32 noundef 0)
+    foreign_c_variadic_1(ap, 2i32, 42i32, 0i32);
+}

tests/codegen-llvm/cffi/c-variadic.rs

@@ -9,7 +9,6 @@ use core::ffi::VaList;
 
 extern "C" {
     fn foreign_c_variadic_0(_: i32, ...);
-    fn foreign_c_variadic_1(_: VaList, ...);
 }
 
 pub unsafe extern "C" fn use_foreign_c_variadic_0() {
@@ -24,27 +23,6 @@ pub unsafe extern "C" fn use_foreign_c_variadic_0() {
     foreign_c_variadic_0(0, 42i32, 1024i32, 0i32);
 }
 
-// Ensure that we do not remove the `va_list` passed to the foreign function when
-// removing the "spoofed" `VaList` that is used by Rust defined C-variadics.
-pub unsafe extern "C" fn use_foreign_c_variadic_1_0(ap: VaList) {
-    // CHECK: call void ({{.*}}, ...) @foreign_c_variadic_1({{.*}} %0)
-    foreign_c_variadic_1(ap);
-}
-
-pub unsafe extern "C" fn use_foreign_c_variadic_1_1(ap: VaList) {
-    // CHECK: call void ({{.*}}, ...) @foreign_c_variadic_1({{.*}} %0, [[PARAM]] 42)
-    foreign_c_variadic_1(ap, 42i32);
-}
-pub unsafe extern "C" fn use_foreign_c_variadic_1_2(ap: VaList) {
-    // CHECK: call void ({{.*}}, ...) @foreign_c_variadic_1({{.*}} %0, [[PARAM]] 2, [[PARAM]] 42)
-    foreign_c_variadic_1(ap, 2i32, 42i32);
-}
-
-pub unsafe extern "C" fn use_foreign_c_variadic_1_3(ap: VaList) {
-    // CHECK: call void ({{.*}}, ...) @foreign_c_variadic_1({{.*}} %0, [[PARAM]] 2, [[PARAM]] 42, [[PARAM]] 0)
-    foreign_c_variadic_1(ap, 2i32, 42i32, 0i32);
-}
-
 // Ensure that `va_start` and `va_end` are properly injected.
 #[no_mangle]
 pub unsafe extern "C" fn c_variadic(n: i32, mut ap: ...) -> i32 {