1 // RUN: %clang_cc1 -triple x86_64-unknown-freebsd10.0 -emit-llvm < %s | FileCheck -check-prefix=FREEBSD %s 2 // RUN: %clang_cc1 -triple x86_64-pc-win32 -emit-llvm < %s | FileCheck -check-prefix=WIN64 %s 3 4 struct foo { 5 int x; 6 float y; 7 char z; 8 }; 9 // FREEBSD: %[[STRUCT_FOO:.*]] = type { i32, float, i8 } 10 // WIN64: %[[STRUCT_FOO:.*]] = type { i32, float, i8 } 11 12 void __attribute__((ms_abi)) f1(void); 13 void __attribute__((sysv_abi)) f2(void); 14 void f3(void) { 15 // FREEBSD-LABEL: define void @f3() 16 // WIN64-LABEL: define void @f3() 17 f1(); 18 // FREEBSD: call x86_64_win64cc void @f1() 19 // WIN64: call void @f1() 20 f2(); 21 // FREEBSD: call void @f2() 22 // WIN64: call x86_64_sysvcc void @f2() 23 } 24 // FREEBSD: declare x86_64_win64cc void @f1() 25 // FREEBSD: declare void @f2() 26 // WIN64: declare void @f1() 27 // WIN64: declare x86_64_sysvcc void @f2() 28 29 // Win64 ABI varargs 30 void __attribute__((ms_abi)) f4(int a, ...) { 31 // FREEBSD-LABEL: define x86_64_win64cc void @f4 32 // WIN64-LABEL: define void @f4 33 __builtin_ms_va_list ap; 34 __builtin_ms_va_start(ap, a); 35 // FREEBSD: %[[AP:.*]] = alloca i8* 36 // FREEBSD: call void @llvm.va_start 37 // WIN64: %[[AP:.*]] = alloca i8* 38 // WIN64: call void @llvm.va_start 39 int b = __builtin_va_arg(ap, int); 40 // FREEBSD: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]] 41 // FREEBSD-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8 42 // FREEBSD-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]] 43 // FREEBSD-NEXT: bitcast i8* %[[AP_CUR]] to i32* 44 // WIN64: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]] 45 // WIN64-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8 46 // WIN64-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]] 47 // WIN64-NEXT: bitcast i8* %[[AP_CUR]] to i32* 48 double _Complex c = __builtin_va_arg(ap, double _Complex); 49 // FREEBSD: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]] 50 // FREEBSD-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 16 51 // FREEBSD-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]] 52 // FREEBSD-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }* 53 // WIN64: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]] 54 // WIN64-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 16 55 // WIN64-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]] 56 // WIN64-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }* 57 struct foo d = __builtin_va_arg(ap, struct foo); 58 // FREEBSD: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]] 59 // FREEBSD-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 16 60 // FREEBSD-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]] 61 // FREEBSD-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]* 62 // WIN64: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]] 63 // WIN64-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 16 64 // WIN64-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]] 65 // WIN64-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]* 66 __builtin_ms_va_list ap2; 67 __builtin_ms_va_copy(ap2, ap); 68 // FREEBSD: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]] 69 // FREEBSD-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]] 70 // WIN64: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]] 71 // WIN64-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]] 72 __builtin_ms_va_end(ap); 73 // FREEBSD: call void @llvm.va_end 74 // WIN64: call void @llvm.va_end 75 } 76 77 // Let's verify that normal va_lists work right on Win64, too. 78 void f5(int a, ...) { 79 // WIN64-LABEL: define void @f5 80 __builtin_va_list ap; 81 __builtin_va_start(ap, a); 82 // WIN64: %[[AP:.*]] = alloca i8* 83 // WIN64: call void @llvm.va_start 84 int b = __builtin_va_arg(ap, int); 85 // WIN64: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]] 86 // WIN64-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8 87 // WIN64-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]] 88 // WIN64-NEXT: bitcast i8* %[[AP_CUR]] to i32* 89 double _Complex c = __builtin_va_arg(ap, double _Complex); 90 // WIN64: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]] 91 // WIN64-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 16 92 // WIN64-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]] 93 // WIN64-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }* 94 struct foo d = __builtin_va_arg(ap, struct foo); 95 // WIN64: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]] 96 // WIN64-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 16 97 // WIN64-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]] 98 // WIN64-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]* 99 __builtin_va_list ap2; 100 __builtin_va_copy(ap2, ap); 101 // WIN64: call void @llvm.va_copy 102 __builtin_va_end(ap); 103 // WIN64: call void @llvm.va_end 104 } 105 106 // Verify that using a Win64 va_list from a System V function works. 107 void __attribute__((sysv_abi)) f6(__builtin_ms_va_list ap) { 108 // FREEBSD-LABEL: define void @f6 109 // FREEBSD: store i8* %ap, i8** %[[AP:.*]] 110 // WIN64-LABEL: define x86_64_sysvcc void @f6 111 // WIN64: store i8* %ap, i8** %[[AP:.*]] 112 int b = __builtin_va_arg(ap, int); 113 // FREEBSD: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]] 114 // FREEBSD-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8 115 // FREEBSD-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]] 116 // FREEBSD-NEXT: bitcast i8* %[[AP_CUR]] to i32* 117 // WIN64: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]] 118 // WIN64-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8 119 // WIN64-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]] 120 // WIN64-NEXT: bitcast i8* %[[AP_CUR]] to i32* 121 double _Complex c = __builtin_va_arg(ap, double _Complex); 122 // FREEBSD: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]] 123 // FREEBSD-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 16 124 // FREEBSD-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]] 125 // FREEBSD-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }* 126 // WIN64: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]] 127 // WIN64-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 16 128 // WIN64-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]] 129 // WIN64-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }* 130 struct foo d = __builtin_va_arg(ap, struct foo); 131 // FREEBSD: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]] 132 // FREEBSD-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 16 133 // FREEBSD-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]] 134 // FREEBSD-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]* 135 // WIN64: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]] 136 // WIN64-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 16 137 // WIN64-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]] 138 // WIN64-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]* 139 __builtin_ms_va_list ap2; 140 __builtin_ms_va_copy(ap2, ap); 141 // FREEBSD: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]] 142 // FREEBSD-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]] 143 // WIN64: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]] 144 // WIN64-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]] 145 } 146
