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// RUN: %clang_cc1 -no-opaque-pointers -triple aarch64-linux-gnu -emit-llvm < %s | FileCheck -check-prefixes=LINUX,COMMON %s
// RUN: %clang_cc1 -no-opaque-pointers -triple aarch64-pc-win32 -emit-llvm < %s | FileCheck -check-prefixes=WIN64,COMMON %s
struct small_odd {
char a, b, c;
};
struct larger {
int a, b, c, d, e;
};
void __attribute__((ms_abi)) f1(void);
void f2(void);
void f3(void) {
// LINUX-LABEL: define{{.*}} void @f3()
// WIN64-LABEL: define dso_local void @f3()
f1();
// LINUX: call win64cc void @f1()
// WIN64: call void @f1()
f2();
// COMMON: call void @f2()
}
// LINUX: declare win64cc void @f1()
// LINUX: declare void @f2()
// WIN64: declare dso_local void @f1()
// WIN64: declare dso_local void @f2()
// Win64 ABI varargs
void __attribute__((ms_abi)) f4(int a, ...) {
// LINUX-LABEL: define{{.*}} win64cc void @f4
// WIN64-LABEL: define dso_local void @f4
__builtin_ms_va_list ap;
__builtin_ms_va_start(ap, a);
// COMMON: %[[AP:.*]] = alloca i8*
// COMMON: call void @llvm.va_start
int b = __builtin_va_arg(ap, int);
// COMMON: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]]
// COMMON-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8
// COMMON-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]]
// COMMON-NEXT: bitcast i8* %[[AP_CUR]] to i32*
__builtin_ms_va_list ap2;
__builtin_ms_va_copy(ap2, ap);
// COMMON: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]]
// COMMON-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]]
__builtin_ms_va_end(ap);
// COMMON: call void @llvm.va_end
}
void __attribute__((ms_abi)) f4_2(int a, ...) {
// LINUX-LABEL: define{{.*}} win64cc void @f4_2
// WIN64-LABEL: define dso_local void @f4_2
__builtin_ms_va_list ap;
__builtin_ms_va_start(ap, a);
// COMMON: %[[AP:.*]] = alloca i8*
// COMMON: call void @llvm.va_start
struct small_odd s1 = __builtin_va_arg(ap, struct small_odd);
// COMMON: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]]
// COMMON-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8
// COMMON-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]]
// COMMON-NEXT: bitcast i8* %[[AP_CUR]] to %struct.small_odd*
struct larger s2 = __builtin_va_arg(ap, struct larger);
// COMMON: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]]
// COMMON-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 8
// COMMON-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]]
// COMMON-NEXT: bitcast i8* %[[AP_CUR2]] to %struct.larger**
__builtin_ms_va_end(ap);
}
// Let's verify that normal va_lists work right on Win64, too.
void f5(int a, ...) {
// WIN64-LABEL: define dso_local void @f5
__builtin_va_list ap;
__builtin_va_start(ap, a);
// WIN64: %[[AP:.*]] = alloca i8*
// WIN64: call void @llvm.va_start
int b = __builtin_va_arg(ap, int);
// WIN64: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]]
// WIN64-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8
// WIN64-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]]
// WIN64-NEXT: bitcast i8* %[[AP_CUR]] to i32*
__builtin_va_list ap2;
__builtin_va_copy(ap2, ap);
// WIN64: call void @llvm.va_copy
__builtin_va_end(ap);
// WIN64: call void @llvm.va_end
}
struct HFA {
float a, b, c;
};
__attribute__((ms_abi)) void msabi_hfa(struct HFA a);
__attribute__((ms_abi)) void msabi_hfa_vararg(struct HFA a, int b, ...);
void call_msabi_hfa(void) {
// COMMON-LABEL: define{{.*}} void @call_msabi_hfa()
// WIN64: call void @msabi_hfa([3 x float] {{.*}})
// LINUX: call win64cc void @msabi_hfa([3 x float] {{.*}})
msabi_hfa((struct HFA){1.0f, 2.0f, 3.0f});
}
void call_msabi_hfa_vararg(void) {
// COMMON-LABEL: define{{.*}} void @call_msabi_hfa_vararg()
// WIN64: call void ([2 x i64], i32, ...) @msabi_hfa_vararg([2 x i64] {{.*}}, i32 noundef 4, [2 x i64] {{.*}})
// LINUX: call win64cc void ([2 x i64], i32, ...) @msabi_hfa_vararg([2 x i64] {{.*}}, i32 noundef 4, [2 x i64] {{.*}})
msabi_hfa_vararg((struct HFA){1.0f, 2.0f, 3.0f}, 4,
(struct HFA){5.0f, 6.0f, 7.0f});
}
__attribute__((ms_abi)) void get_msabi_hfa_vararg(int a, ...) {
// COMMON-LABEL: define{{.*}} void @get_msabi_hfa_vararg
__builtin_ms_va_list ap;
__builtin_ms_va_start(ap, a);
// COMMON: %[[AP:.*]] = alloca i8*
// COMMON: call void @llvm.va_start
struct HFA b = __builtin_va_arg(ap, struct HFA);
// COMMON: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]]
// COMMON-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 16
// COMMON-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]]
// COMMON-NEXT: bitcast i8* %[[AP_CUR]] to %struct.HFA*
__builtin_ms_va_end(ap);
}
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