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 // FIXME: These are different now. We probably need __builtin_ms_va_arg. 49 double _Complex c = __builtin_va_arg(ap, double _Complex); 50 // FREEBSD: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]] 51 // FREEBSD-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 16 52 // FREEBSD-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]] 53 // FREEBSD-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }* 54 // WIN64: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]] 55 // WIN64-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 8 56 // WIN64-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]] 57 // WIN64-NEXT: %[[CUR2:.*]] = bitcast i8* %[[AP_CUR2]] to { double, double }** 58 // WIN64-NEXT: load { double, double }*, { double, double }** %[[CUR2]] 59 struct foo d = __builtin_va_arg(ap, struct foo); 60 // FREEBSD: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]] 61 // FREEBSD-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 16 62 // FREEBSD-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]] 63 // FREEBSD-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]* 64 // WIN64: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]] 65 // WIN64-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 8 66 // WIN64-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]] 67 // WIN64-NEXT: %[[CUR3:.*]] = bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]* 68 // WIN64-NEXT: load %[[STRUCT_FOO]]*, %[[STRUCT_FOO]]** %[[CUR3]] 69 __builtin_ms_va_list ap2; 70 __builtin_ms_va_copy(ap2, ap); 71 // FREEBSD: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]] 72 // FREEBSD-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]] 73 // WIN64: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]] 74 // WIN64-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]] 75 __builtin_ms_va_end(ap); 76 // FREEBSD: call void @llvm.va_end 77 // WIN64: call void @llvm.va_end 78 } 79 80 // Let's verify that normal va_lists work right on Win64, too. 81 void f5(int a, ...) { 82 // WIN64-LABEL: define void @f5 83 __builtin_va_list ap; 84 __builtin_va_start(ap, a); 85 // WIN64: %[[AP:.*]] = alloca i8* 86 // WIN64: call void @llvm.va_start 87 int b = __builtin_va_arg(ap, int); 88 // WIN64: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]] 89 // WIN64-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8 90 // WIN64-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]] 91 // WIN64-NEXT: bitcast i8* %[[AP_CUR]] to i32* 92 double _Complex c = __builtin_va_arg(ap, double _Complex); 93 // WIN64: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]] 94 // WIN64-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 8 95 // WIN64-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]] 96 // WIN64-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }* 97 struct foo d = __builtin_va_arg(ap, struct foo); 98 // WIN64: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]] 99 // WIN64-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 8 100 // WIN64-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]] 101 // WIN64-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]* 102 __builtin_va_list ap2; 103 __builtin_va_copy(ap2, ap); 104 // WIN64: call void @llvm.va_copy 105 __builtin_va_end(ap); 106 // WIN64: call void @llvm.va_end 107 } 108 109 // Verify that using a Win64 va_list from a System V function works. 110 void __attribute__((sysv_abi)) f6(__builtin_ms_va_list ap) { 111 // FREEBSD-LABEL: define void @f6 112 // FREEBSD: store i8* %ap, i8** %[[AP:.*]] 113 // WIN64-LABEL: define x86_64_sysvcc void @f6 114 // WIN64: store i8* %ap, i8** %[[AP:.*]] 115 int b = __builtin_va_arg(ap, int); 116 // FREEBSD: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]] 117 // FREEBSD-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8 118 // FREEBSD-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]] 119 // FREEBSD-NEXT: bitcast i8* %[[AP_CUR]] to i32* 120 // WIN64: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]] 121 // WIN64-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8 122 // WIN64-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]] 123 // WIN64-NEXT: bitcast i8* %[[AP_CUR]] to i32* 124 double _Complex c = __builtin_va_arg(ap, double _Complex); 125 // FREEBSD: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]] 126 // FREEBSD-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 16 127 // FREEBSD-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]] 128 // FREEBSD-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }* 129 // WIN64: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]] 130 // WIN64-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 8 131 // WIN64-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]] 132 // WIN64-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }* 133 struct foo d = __builtin_va_arg(ap, struct foo); 134 // FREEBSD: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]] 135 // FREEBSD-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 16 136 // FREEBSD-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]] 137 // FREEBSD-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]* 138 // WIN64: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]] 139 // WIN64-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 8 140 // WIN64-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]] 141 // WIN64-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]* 142 __builtin_ms_va_list ap2; 143 __builtin_ms_va_copy(ap2, ap); 144 // FREEBSD: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]] 145 // FREEBSD-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]] 146 // WIN64: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]] 147 // WIN64-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]] 148 } 149