================
@@ -853,3 +853,56 @@ void foo32() {
// OGCG: %[[REAL_ADDR:.*]] = alloca i32, align 4
// OGCG: %[[REAL:.*]] = load i32, ptr @_ZN9Container1cE, align 4
// OGCG: store i32 %[[REAL]], ptr %[[REAL_ADDR]], align 4
+
+void foo33(__builtin_va_list a) {
+ float _Complex b = __builtin_va_arg(a, float _Complex);
+}
+
+// CIR: %[[A_ADDR:.*]] = cir.alloca !cir.ptr<!rec___va_list_tag>,
!cir.ptr<!cir.ptr<!rec___va_list_tag>>, ["a", init]
+// CIR: %[[B_ADDR:.*]] = cir.alloca !cir.complex<!cir.float>,
!cir.ptr<!cir.complex<!cir.float>>, ["b", init]
+// CIR: cir.store %[[ARG_0:.*]], %[[A_ADDR]] : !cir.ptr<!rec___va_list_tag>,
!cir.ptr<!cir.ptr<!rec___va_list_tag>>
+// CIR: %[[VA_TAG:.*]] = cir.load{{.*}} %[[A_ADDR]] :
!cir.ptr<!cir.ptr<!rec___va_list_tag>>, !cir.ptr<!rec___va_list_tag>
+// CIR: %[[COMPLEX:.*]] = cir.va_arg %[[VA_TAG]] :
(!cir.ptr<!rec___va_list_tag>) -> !cir.complex<!cir.float>
+// CIR: cir.store{{.*}} %[[COMPLEX]], %[[B_ADDR]] : !cir.complex<!cir.float>,
!cir.ptr<!cir.complex<!cir.float>>
+
+// LLVM: %[[A_ADDR:.*]] = alloca ptr, i64 1, align 8
+// LLVM: %[[B_ADDR:.*]] = alloca { float, float }, i64 1, align 4
+// LLVM: store ptr %[[ARG_0:.*]], ptr %[[A_ADDR]], align 8
+// LLVM: %[[TMP_A:.*]] = load ptr, ptr %[[A_ADDR]], align 8
+// LLVM: %[[COMPLEX:.*]] = va_arg ptr %[[TMP_A]], { float, float }
+// LLVM: store { float, float } %[[COMPLEX]], ptr %[[B_ADDR]], align 4
+
----------------
andykaylor wrote:
Can you add a comment indicating that the difference between the CIR LLVM and
OGCG and due to lack of calling convention lowering? We'll want to update this
test when that is implemented.
https://github.com/llvm/llvm-project/pull/156092
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