microsoft-uuidof.cpp revision c8fe011b7e00a20018c8627e0dddd26882ca4499
1c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber// RUN: %clang_cc1 -emit-llvm %s -o - -triple=i386-pc-win32 -fms-extensions | FileCheck %s 2c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 3c5f804636e367ef744fd24cf88f7c956a5af0434Nico Webertypedef struct _GUID 4c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber{ 5c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber unsigned long Data1; 6c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber unsigned short Data2; 7c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber unsigned short Data3; 8c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber unsigned char Data4[8]; 9c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber} GUID; 10c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 11c8fe011b7e00a20018c8627e0dddd26882ca4499David Majnemerstruct __declspec(uuid("12345678-1234-1234-1234-1234567890aB")) S1 { } s1; 12c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weberstruct __declspec(uuid("87654321-4321-4321-4321-ba0987654321")) S2 { }; 13c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 14c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber// This gets initialized in a static initializer. 15c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber// CHECK: @g = global %struct._GUID zeroinitializer, align 4 16c5f804636e367ef744fd24cf88f7c956a5af0434Nico WeberGUID g = __uuidof(S1); 17c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 18c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber// First global use of __uuidof(S1) forces the creation of the global. 19c8fe011b7e00a20018c8627e0dddd26882ca4499David Majnemer// CHECK: @_GUID_12345678_1234_1234_1234_1234567890ab = unnamed_addr constant %struct._GUID { i32 305419896, i16 4660, i16 4660, [8 x i8] c"\124\124Vx\90\AB" } 20c8fe011b7e00a20018c8627e0dddd26882ca4499David Majnemer// CHECK: @gr = constant %struct._GUID* @_GUID_12345678_1234_1234_1234_1234567890ab, align 4 21c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weberconst GUID& gr = __uuidof(S1); 22c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 23c8fe011b7e00a20018c8627e0dddd26882ca4499David Majnemer// CHECK: @gp = global %struct._GUID* @_GUID_12345678_1234_1234_1234_1234567890ab, align 4 24c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weberconst GUID* gp = &__uuidof(S1); 25c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 26c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber// Special case: _uuidof(0) 27c8fe011b7e00a20018c8627e0dddd26882ca4499David Majnemer// CHECK: @zeroiid = constant %struct._GUID* @_GUID_00000000_0000_0000_0000_000000000000, align 4 28c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weberconst GUID& zeroiid = __uuidof(0); 29c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 30c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber// __uuidof(S2) hasn't been used globally yet, so it's emitted when it's used 31c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber// in a function and is emitted at the end of the globals section. 32c8fe011b7e00a20018c8627e0dddd26882ca4499David Majnemer// CHECK: @_GUID_87654321_4321_4321_4321_ba0987654321 = unnamed_addr constant %struct._GUID { i32 -2023406815, i16 17185, i16 17185, [8 x i8] c"C!\BA\09\87eC!" } 33c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 34c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber// The static initializer for g. 35c8fe011b7e00a20018c8627e0dddd26882ca4499David Majnemer// CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* bitcast (%struct._GUID* @g to i8*), i8* bitcast (%struct._GUID* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 16, i32 4, i1 false) 36c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 37c5f804636e367ef744fd24cf88f7c956a5af0434Nico Webervoid fun() { 38c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // CHECK: %s1_1 = alloca %struct._GUID, align 4 39c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // CHECK: %s1_2 = alloca %struct._GUID, align 4 40c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // CHECK: %s1_3 = alloca %struct._GUID, align 4 41c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 42a2cdd4d66a3791410e8de1c0232ae2eed53b8036NAKAMURA Takumi // CHECK: [[U1:%.+]] = bitcast %struct._GUID* %s1_1 to i8* 43c8fe011b7e00a20018c8627e0dddd26882ca4499David Majnemer // CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[U1]], i8* bitcast (%struct._GUID* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 16, i32 4, i1 false) 44c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber GUID s1_1 = __uuidof(S1); 45c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 46a2cdd4d66a3791410e8de1c0232ae2eed53b8036NAKAMURA Takumi // CHECK: [[U2:%.+]] = bitcast %struct._GUID* %s1_2 to i8* 47c8fe011b7e00a20018c8627e0dddd26882ca4499David Majnemer // CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[U2]], i8* bitcast (%struct._GUID* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 16, i32 4, i1 false) 48c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber GUID s1_2 = __uuidof(S1); 49c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 50a2cdd4d66a3791410e8de1c0232ae2eed53b8036NAKAMURA Takumi // CHECK: [[U3:%.+]] = bitcast %struct._GUID* %s1_3 to i8* 51c8fe011b7e00a20018c8627e0dddd26882ca4499David Majnemer // CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[U3]], i8* bitcast (%struct._GUID* @_GUID_12345678_1234_1234_1234_1234567890ab to i8*), i32 16, i32 4, i1 false) 52c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber GUID s1_3 = __uuidof(s1); 53c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber} 54c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 55c5f804636e367ef744fd24cf88f7c956a5af0434Nico Webervoid gun() { 56c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // CHECK: %s2_1 = alloca %struct._GUID, align 4 57c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // CHECK: %s2_2 = alloca %struct._GUID, align 4 58c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // CHECK: %r = alloca %struct._GUID*, align 4 59c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // CHECK: %p = alloca %struct._GUID*, align 4 60c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // CHECK: %zeroiid = alloca %struct._GUID*, align 4 61c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber GUID s2_1 = __uuidof(S2); 62c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber GUID s2_2 = __uuidof(S2); 63c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 64c8fe011b7e00a20018c8627e0dddd26882ca4499David Majnemer // CHECK: store %struct._GUID* @_GUID_87654321_4321_4321_4321_ba0987654321, %struct._GUID** %r, align 4 65c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber const GUID& r = __uuidof(S2); 66c8fe011b7e00a20018c8627e0dddd26882ca4499David Majnemer // CHECK: store %struct._GUID* @_GUID_87654321_4321_4321_4321_ba0987654321, %struct._GUID** %p, align 4 67c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber const GUID* p = &__uuidof(S2); 68c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber 69c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber // Special case _uuidof(0), local scope version. 70c8fe011b7e00a20018c8627e0dddd26882ca4499David Majnemer // CHECK: store %struct._GUID* @_GUID_00000000_0000_0000_0000_000000000000, %struct._GUID** %zeroiid, align 4 71c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber const GUID& zeroiid = __uuidof(0); 72c5f804636e367ef744fd24cf88f7c956a5af0434Nico Weber} 73