1 // RUN: %clang_cc1 -std=c++11 -fblocks -fms-extensions %s -triple=x86_64-windows-msvc -emit-llvm \
2 // RUN:         -o - -mconstructor-aliases -fcxx-exceptions -fexceptions | \
3 // RUN:         FileCheck %s --check-prefix=CHECK --check-prefix=CXXEH
4 // RUN: %clang_cc1 -std=c++11 -fblocks -fms-extensions %s -triple=x86_64-windows-msvc -emit-llvm \
5 // RUN:         -o - -mconstructor-aliases -O1 -disable-llvm-optzns | \
6 // RUN:         FileCheck %s --check-prefix=CHECK --check-prefix=NOCXX
7 
8 extern "C" unsigned long _exception_code();
9 extern "C" void might_throw();
10 
11 struct HasCleanup {
12   HasCleanup();
13   ~HasCleanup();
14   int padding;
15 };
16 
17 extern "C" void use_cxx() {
18   HasCleanup x;
19   might_throw();
20 }
21 
22 // Make sure we use __CxxFrameHandler3 for C++ EH.
23 
24 // CXXEH-LABEL: define void @use_cxx()
25 // CXXEH-SAME:  personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
26 // CXXEH: call %struct.HasCleanup* @"\01??0HasCleanup@@QEAA@XZ"(%struct.HasCleanup* %{{.*}})
27 // CXXEH: invoke void @might_throw()
28 // CXXEH:       to label %[[cont:[^ ]*]] unwind label %[[lpad:[^ ]*]]
29 //
30 // CXXEH: [[cont]]
31 // CXXEH: call void @"\01??1HasCleanup@@QEAA@XZ"(%struct.HasCleanup* %{{.*}})
32 // CXXEH: ret void
33 //
34 // CXXEH: [[lpad]]
35 // CXXEH: cleanuppad
36 // CXXEH: call void @"\01??1HasCleanup@@QEAA@XZ"(%struct.HasCleanup* %{{.*}})
37 // CXXEH: cleanupret
38 
39 // NOCXX-LABEL: define void @use_cxx()
40 // NOCXX-NOT: invoke
41 // NOCXX: call %struct.HasCleanup* @"\01??0HasCleanup@@QEAA@XZ"(%struct.HasCleanup* %{{.*}})
42 // NOCXX-NOT: invoke
43 // NOCXX: call void @might_throw()
44 // NOCXX-NOT: invoke
45 // NOCXX: call void @"\01??1HasCleanup@@QEAA@XZ"(%struct.HasCleanup* %{{.*}})
46 // NOCXX-NOT: invoke
47 // NOCXX: ret void
48 
49 extern "C" void use_seh() {
50   __try {
51     might_throw();
52   } __except(1) {
53   }
54 }
55 
56 // Make sure we use __C_specific_handler for SEH.
57 
58 // CHECK-LABEL: define void @use_seh()
59 // CHECK-SAME:  personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
60 // CHECK: invoke void @might_throw() #[[NOINLINE:[0-9]+]]
61 // CHECK:       to label %[[cont:[^ ]*]] unwind label %[[lpad:[^ ]*]]
62 //
63 // CHECK: [[lpad]]
64 // CHECK-NEXT: catchpad
65 // CHECK: catchret {{.*}} label %[[except:[^ ]*]]
66 //
67 // CHECK: [[except]]
68 // CHECK: br label %[[ret:[^ ]*]]
69 //
70 // CHECK: [[ret]]
71 // CHECK: ret void
72 //
73 // CHECK: [[cont]]
74 // CHECK: br label %[[ret]]
75 
76 void use_seh_in_lambda() {
77   ([]() {
78     __try {
79       might_throw();
80     } __except(1) {
81     }
82   })();
83   HasCleanup x;
84   might_throw();
85 }
86 
87 // CXXEH-LABEL: define void @"\01?use_seh_in_lambda@@YAXXZ"()
88 // CXXEH-SAME:  personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
89 // CXXEH: cleanuppad
90 
91 // NOCXX-LABEL: define void @"\01?use_seh_in_lambda@@YAXXZ"()
92 // NOCXX-NOT: invoke
93 // NOCXX: ret void
94 
95 // CHECK-LABEL: define internal void @"\01??R<lambda_0>@?use_seh_in_lambda@@YAXXZ@QEBAXXZ"(%class.anon* %this)
96 // CXXEH-SAME:  personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
97 // CHECK: invoke void @might_throw() #[[NOINLINE]]
98 // CHECK: catchpad
99 
100 static int my_unique_global;
101 
102 extern "C" inline void use_seh_in_inline_func() {
103   __try {
104     might_throw();
105   } __except(_exception_code() == 424242) {
106   }
107   __try {
108     might_throw();
109   } __finally {
110     my_unique_global = 1234;
111   }
112 }
113 
114 void use_inline() {
115   use_seh_in_inline_func();
116 }
117 
118 // CHECK-LABEL: define linkonce_odr void @use_seh_in_inline_func() #{{[0-9]+}} comdat
119 // CHECK-SAME:  personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
120 // CHECK: invoke void @might_throw()
121 //
122 // CHECK: catchpad [i8* bitcast (i32 (i8*, i8*)* @"\01?filt$0@0@use_seh_in_inline_func@@" to i8*)]
123 //
124 // CHECK: invoke void @might_throw()
125 //
126 // CHECK: %[[fp:[^ ]*]] = call i8* @llvm.localaddress()
127 // CHECK: call void @"\01?fin$0@0@use_seh_in_inline_func@@"(i8 0, i8* %[[fp]])
128 // CHECK: ret void
129 //
130 // CHECK: cleanuppad
131 // CHECK: %[[fp:[^ ]*]] = call i8* @llvm.localaddress()
132 // CHECK: invoke void @"\01?fin$0@0@use_seh_in_inline_func@@"(i8 1, i8* %[[fp]])
133 
134 // CHECK-LABEL: define internal i32 @"\01?filt$0@0@use_seh_in_inline_func@@"(i8* %exception_pointers, i8* %frame_pointer) #{{[0-9]+}} comdat($use_seh_in_inline_func)
135 // CHECK: icmp eq i32 %{{.*}}, 424242
136 // CHECK: zext i1 %{{.*}} to i32
137 // CHECK: ret i32
138 
139 // CHECK-LABEL: define internal void @"\01?fin$0@0@use_seh_in_inline_func@@"(i8 %abnormal_termination, i8* %frame_pointer) #{{[0-9]+}} comdat($use_seh_in_inline_func)
140 // CHECK: store i32 1234, i32* @my_unique_global
141 
142 // CHECK: attributes #[[NOINLINE]] = { {{.*noinline.*}} }
143