1 // RUN: %clang_cc1 -no-opaque-pointers -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 -no-opaque-pointers -std=c++11 -fblocks -fms-extensions %s -triple=x86_64-windows-msvc -emit-llvm \
5 // RUN:         -o - -mconstructor-aliases -O1 -disable-llvm-passes | \
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 dso_local void @use_cxx()
25 // CXXEH-SAME:  personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
26 // CXXEH: call noundef %struct.HasCleanup* @"??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 @"??1HasCleanup@@QEAA@XZ"(%struct.HasCleanup* {{[^,]*}} %{{.*}})
32 // CXXEH: ret void
33 //
34 // CXXEH: [[lpad]]
35 // CXXEH: cleanuppad
36 // CXXEH: call void @"??1HasCleanup@@QEAA@XZ"(%struct.HasCleanup* {{[^,]*}} %{{.*}})
37 // CXXEH: cleanupret
38 
39 // NOCXX-LABEL: define dso_local void @use_cxx()
40 // NOCXX-NOT: invoke
41 // NOCXX: call noundef %struct.HasCleanup* @"??0HasCleanup@@QEAA@XZ"(%struct.HasCleanup* {{[^,]*}} %{{.*}})
42 // NOCXX-NOT: invoke
43 // NOCXX: call void @might_throw()
44 // NOCXX-NOT: invoke
45 // NOCXX: call void @"??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 dso_local 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: %[[switch:.*]] = catchswitch within none [label %[[cpad:.*]]] unwind to caller
65 //
66 // CHECK: [[cpad]]
67 // CHECK-NEXT: catchpad within %[[switch]]
68 // CHECK: catchret {{.*}} label %[[except:[^ ]*]]
69 //
70 // CHECK: [[except]]
71 // CHECK: br label %[[ret:[^ ]*]]
72 //
73 // CHECK: [[ret]]
74 // CHECK: ret void
75 //
76 // CHECK: [[cont]]
77 // CHECK: br label %[[ret]]
78 
79 extern "C" void nested_finally() {
80   __try {
81     might_throw();
82   } __finally {
83     __try {
84       might_throw();
85     } __finally {
86     }
87   }
88 }
89 
90 // CHECK-LABEL: define dso_local void @nested_finally() #{{[0-9]+}}
91 // CHECK-SAME:  personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
92 // CHECK: invoke void @might_throw()
93 // CHECK: call void @"?fin$0@0@nested_finally@@"(i8 noundef 1, i8* {{.*}})
94 
95 // CHECK-LABEL: define internal void @"?fin$0@0@nested_finally@@"
96 // CHECK-SAME:  personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
97 // CHECK: invoke void @might_throw()
98 // CHECK: call void @"?fin$1@0@nested_finally@@"(i8 noundef 1, i8* {{.*}})
99 
100 void use_seh_in_lambda() {
101   ([]() {
102     __try {
103       might_throw();
104     } __except(1) {
105     }
106   })();
107   HasCleanup x;
108   might_throw();
109 }
110 
111 // CXXEH-LABEL: define dso_local void @"?use_seh_in_lambda@@YAXXZ"()
112 // CXXEH-SAME:  personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
113 // CXXEH: cleanuppad
114 
115 // NOCXX-LABEL: define dso_local void @"?use_seh_in_lambda@@YAXXZ"()
116 // NOCXX-NOT: invoke
117 // NOCXX: ret void
118 
119 // CHECK-LABEL: define internal void @"??R<lambda_0>@?0??use_seh_in_lambda@@YAXXZ@QEBA@XZ"(%class.anon* {{[^,]*}} %this)
120 // CXXEH-SAME:  personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
121 // CHECK: invoke void @might_throw() #[[NOINLINE]]
122 // CHECK: catchpad
123 
124 static int my_unique_global;
125 
126 extern "C" inline void use_seh_in_inline_func() {
127   __try {
128     might_throw();
129   } __except(_exception_code() == 424242) {
130   }
131   __try {
132     might_throw();
133   } __finally {
134     my_unique_global = 1234;
135   }
136 }
137 
138 void use_inline() {
139   use_seh_in_inline_func();
140 }
141 
142 // CHECK-LABEL: define linkonce_odr dso_local void @use_seh_in_inline_func() #{{[0-9]+}}
143 // CHECK-SAME:  personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
144 // CHECK: invoke void @might_throw()
145 //
146 // CHECK: catchpad {{.*}} [i8* bitcast (i32 (i8*, i8*)* @"?filt$0@0@use_seh_in_inline_func@@" to i8*)]
147 //
148 // CHECK: invoke void @might_throw()
149 //
150 // CHECK: %[[fp:[^ ]*]] = call i8* @llvm.localaddress()
151 // CHECK: call void @"?fin$0@0@use_seh_in_inline_func@@"(i8 noundef 0, i8* noundef %[[fp]])
152 // CHECK: ret void
153 //
154 // CHECK: cleanuppad
155 // CHECK: %[[fp:[^ ]*]] = call i8* @llvm.localaddress()
156 // CHECK: call void @"?fin$0@0@use_seh_in_inline_func@@"(i8 noundef 1, i8* noundef %[[fp]])
157 
158 // CHECK-LABEL: define internal noundef i32 @"?filt$0@0@use_seh_in_inline_func@@"(i8* noundef %exception_pointers, i8* noundef %frame_pointer) #{{[0-9]+}}
159 // CHECK: icmp eq i32 %{{.*}}, 424242
160 // CHECK: zext i1 %{{.*}} to i32
161 // CHECK: ret i32
162 
163 // CHECK-LABEL: define internal void @"?fin$0@0@use_seh_in_inline_func@@"(i8 noundef %abnormal_termination, i8* noundef %frame_pointer) #{{[0-9]+}}
164 // CHECK: store i32 1234, i32* @my_unique_global
165 
166 // CHECK: attributes #[[NOINLINE]] = { {{.*noinline.*}} }
167 
168 void seh_in_noexcept() noexcept { __try {} __finally {} }
169