forked from OSchip/llvm-project
162 lines
7.4 KiB
C
162 lines
7.4 KiB
C
// RUN: %clang_cc1 -triple x86_64-unknown-freebsd10.0 -emit-llvm < %s | FileCheck -check-prefix=FREEBSD %s
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// RUN: %clang_cc1 -triple x86_64-pc-win32 -emit-llvm < %s | FileCheck -check-prefix=WIN64 %s
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struct foo {
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int x;
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float y;
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char z;
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};
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// FREEBSD: %[[STRUCT_FOO:.*]] = type { i32, float, i8 }
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// WIN64: %[[STRUCT_FOO:.*]] = type { i32, float, i8 }
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void __attribute__((ms_abi)) f1(void);
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void __attribute__((sysv_abi)) f2(void);
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void f3(void) {
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// FREEBSD-LABEL: define void @f3()
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// WIN64-LABEL: define dso_local void @f3()
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f1();
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// FREEBSD: call win64cc void @f1()
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// WIN64: call void @f1()
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f2();
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// FREEBSD: call void @f2()
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// WIN64: call x86_64_sysvcc void @f2()
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}
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// FREEBSD: declare win64cc void @f1()
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// FREEBSD: declare void @f2()
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// WIN64: declare dso_local void @f1()
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// WIN64: declare dso_local x86_64_sysvcc void @f2()
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// Win64 ABI varargs
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void __attribute__((ms_abi)) f4(int a, ...) {
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// FREEBSD-LABEL: define win64cc void @f4
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// WIN64-LABEL: define dso_local void @f4
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__builtin_ms_va_list ap;
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__builtin_ms_va_start(ap, a);
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// FREEBSD: %[[AP:.*]] = alloca i8*
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// FREEBSD: call void @llvm.va_start
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// WIN64: %[[AP:.*]] = alloca i8*
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// WIN64: call void @llvm.va_start
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int b = __builtin_va_arg(ap, int);
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// FREEBSD: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]]
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// FREEBSD-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8
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// FREEBSD-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]]
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// FREEBSD-NEXT: bitcast i8* %[[AP_CUR]] to i32*
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// WIN64: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]]
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// WIN64-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8
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// WIN64-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]]
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// WIN64-NEXT: bitcast i8* %[[AP_CUR]] to i32*
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// FIXME: These are different now. We probably need __builtin_ms_va_arg.
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double _Complex c = __builtin_va_arg(ap, double _Complex);
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// FREEBSD: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]]
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// FREEBSD-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 16
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// FREEBSD-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]]
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// FREEBSD-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }*
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// WIN64: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]]
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// WIN64-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 8
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// WIN64-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]]
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// WIN64-NEXT: %[[CUR2:.*]] = bitcast i8* %[[AP_CUR2]] to { double, double }**
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// WIN64-NEXT: load { double, double }*, { double, double }** %[[CUR2]]
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struct foo d = __builtin_va_arg(ap, struct foo);
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// FREEBSD: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]]
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// FREEBSD-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 16
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// FREEBSD-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]]
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// FREEBSD-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]*
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// WIN64: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]]
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// WIN64-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 8
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// WIN64-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]]
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// WIN64-NEXT: %[[CUR3:.*]] = bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]*
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// WIN64-NEXT: load %[[STRUCT_FOO]]*, %[[STRUCT_FOO]]** %[[CUR3]]
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__builtin_ms_va_list ap2;
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__builtin_ms_va_copy(ap2, ap);
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// FREEBSD: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]]
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// FREEBSD-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]]
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// WIN64: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]]
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// WIN64-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]]
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__builtin_ms_va_end(ap);
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// FREEBSD: call void @llvm.va_end
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// WIN64: call void @llvm.va_end
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}
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// Let's verify that normal va_lists work right on Win64, too.
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void f5(int a, ...) {
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// WIN64-LABEL: define dso_local void @f5
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__builtin_va_list ap;
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__builtin_va_start(ap, a);
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// WIN64: %[[AP:.*]] = alloca i8*
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// WIN64: call void @llvm.va_start
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int b = __builtin_va_arg(ap, int);
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// WIN64: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]]
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// WIN64-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8
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// WIN64-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]]
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// WIN64-NEXT: bitcast i8* %[[AP_CUR]] to i32*
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double _Complex c = __builtin_va_arg(ap, double _Complex);
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// WIN64: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]]
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// WIN64-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 8
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// WIN64-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]]
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// WIN64-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }*
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struct foo d = __builtin_va_arg(ap, struct foo);
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// WIN64: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]]
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// WIN64-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 8
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// WIN64-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]]
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// WIN64-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]*
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__builtin_va_list ap2;
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__builtin_va_copy(ap2, ap);
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// WIN64: call void @llvm.va_copy
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__builtin_va_end(ap);
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// WIN64: call void @llvm.va_end
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}
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// Verify that using a Win64 va_list from a System V function works.
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void __attribute__((sysv_abi)) f6(__builtin_ms_va_list ap) {
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// FREEBSD-LABEL: define void @f6
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// FREEBSD: store i8* %ap, i8** %[[AP:.*]]
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// WIN64-LABEL: define dso_local x86_64_sysvcc void @f6
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// WIN64: store i8* %ap, i8** %[[AP:.*]]
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int b = __builtin_va_arg(ap, int);
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// FREEBSD: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]]
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// FREEBSD-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8
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// FREEBSD-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]]
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// FREEBSD-NEXT: bitcast i8* %[[AP_CUR]] to i32*
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// WIN64: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]]
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// WIN64-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8
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// WIN64-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]]
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// WIN64-NEXT: bitcast i8* %[[AP_CUR]] to i32*
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double _Complex c = __builtin_va_arg(ap, double _Complex);
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// FREEBSD: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]]
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// FREEBSD-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 16
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// FREEBSD-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]]
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// FREEBSD-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }*
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// WIN64: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]]
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// WIN64-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 8
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// WIN64-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]]
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// WIN64-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }*
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struct foo d = __builtin_va_arg(ap, struct foo);
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// FREEBSD: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]]
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// FREEBSD-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 16
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// FREEBSD-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]]
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// FREEBSD-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]*
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// WIN64: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]]
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// WIN64-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 8
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// WIN64-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]]
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// WIN64-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]*
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__builtin_ms_va_list ap2;
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__builtin_ms_va_copy(ap2, ap);
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// FREEBSD: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]]
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// FREEBSD-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]]
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// WIN64: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]]
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// WIN64-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]]
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}
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// This test checks if structs are passed according to Win64 calling convention
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// when it's enforced by __attribute((ms_abi)).
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struct i128 {
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unsigned long long a;
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unsigned long long b;
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};
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__attribute__((ms_abi)) struct i128 f7(struct i128 a) {
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// WIN64: define dso_local void @f7(%struct.i128* noalias sret align 8 %agg.result, %struct.i128* %a)
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// FREEBSD: define win64cc void @f7(%struct.i128* noalias sret align 8 %agg.result, %struct.i128* %a)
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return a;
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}
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