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1; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
2
3; This test is based on the following code:
4;
5; void test()
6; {
7;   try {
8;     may_throw();
9;   } catch (int i) {
10;     handle_int(i);
11;   }
12; }
13;
14; Parts of the IR have been hand-edited to simplify the test case.
15; The full IR will be restored when Windows C++ EH support is complete.
16
17;ModuleID = 'cppeh-catch-scalar.cpp'
18target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
19target triple = "x86_64-pc-windows-msvc"
20
21@_ZTIi = external constant i8*
22
23; The function entry will be rewritten like this.
24; CHECK: define void @_Z4testv()
25; CHECK: entry:
26; CHECK:   [[I_PTR:\%.+]] = alloca i32, align 4
27; CHECK:   call void (...) @llvm.frameescape(i32* [[I_PTR]])
28; CHECK:   invoke void @_Z9may_throwv()
29; CHECK:           to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]+]]
30
31; Function Attrs: uwtable
32define void @_Z4testv() #0 {
33entry:
34  %exn.slot = alloca i8*
35  %ehselector.slot = alloca i32
36  %i = alloca i32, align 4
37  invoke void @_Z9may_throwv()
38          to label %invoke.cont unwind label %lpad
39
40invoke.cont:                                      ; preds = %entry
41  br label %try.cont
42
43; CHECK: [[LPAD_LABEL]]:{{[ ]+}}; preds = %entry
44; CHECK:   landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
45; CHECK-NEXT:           catch i8* bitcast (i8** @_ZTIi to i8*)
46; CHECK-NEXT:   [[RECOVER:\%.+]] = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (i8** @_ZTIi to i8*), i32 0, i8* (i8*, i8*)* @_Z4testv.catch)
47; CHECK-NEXT:   indirectbr i8* [[RECOVER]], [label %try.cont]
48
49lpad:                                             ; preds = %entry
50  %tmp = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
51          catch i8* bitcast (i8** @_ZTIi to i8*)
52  %tmp1 = extractvalue { i8*, i32 } %tmp, 0
53  store i8* %tmp1, i8** %exn.slot
54  %tmp2 = extractvalue { i8*, i32 } %tmp, 1
55  store i32 %tmp2, i32* %ehselector.slot
56  br label %catch.dispatch
57
58; CHECK-NOT: catch-dispatch:
59
60catch.dispatch:                                   ; preds = %lpad
61  %sel = load i32, i32* %ehselector.slot
62  %tmp3 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) #3
63  %matches = icmp eq i32 %sel, %tmp3
64  br i1 %matches, label %catch, label %eh.resume
65
66; CHECK-NOT: catch:
67
68catch:                                            ; preds = %catch.dispatch
69  %exn11 = load i8*, i8** %exn.slot
70  %i.i8 = bitcast i32* %i to i8*
71  call void @llvm.eh.begincatch(i8* %exn11, i8* %i.i8) #3
72  %tmp7 = load i32, i32* %i, align 4
73  call void @_Z10handle_inti(i32 %tmp7)
74  br label %invoke.cont2
75
76; CHECK-NOT: invoke.cont2:
77
78invoke.cont2:                                     ; preds = %catch
79  call void @llvm.eh.endcatch() #3
80  br label %try.cont
81
82try.cont:                                         ; preds = %invoke.cont2, %invoke.cont
83  ret void
84
85; CHECK-NOT: eh.resume:
86
87eh.resume:                                        ; preds = %catch.dispatch
88  %exn3 = load i8*, i8** %exn.slot
89  %sel4 = load i32, i32* %ehselector.slot
90  %lpad.val = insertvalue { i8*, i32 } undef, i8* %exn3, 0
91  %lpad.val5 = insertvalue { i8*, i32 } %lpad.val, i32 %sel4, 1
92  resume { i8*, i32 } %lpad.val5
93
94; CHECK: }
95}
96
97; CHECK: define internal i8* @_Z4testv.catch(i8*, i8*)
98; CHECK: entry:
99; CHECK:   [[RECOVER_I:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @_Z4testv to i8*), i8* %1, i32 0)
100; CHECK:   [[I_PTR1:\%.+]] = bitcast i8* [[RECOVER_I]] to i32*
101; CHECK:   [[TMP:\%.+]] = load i32, i32* [[I_PTR1]], align 4
102; CHECK:   call void @_Z10handle_inti(i32 [[TMP]])
103; CHECK:   ret i8* blockaddress(@_Z4testv, %try.cont)
104; CHECK: }
105
106declare void @_Z9may_throwv() #1
107
108declare i32 @__CxxFrameHandler3(...)
109
110; Function Attrs: nounwind readnone
111declare i32 @llvm.eh.typeid.for(i8*) #2
112
113declare void @llvm.eh.begincatch(i8*, i8*)
114
115declare void @llvm.eh.endcatch()
116
117declare void @_Z10handle_inti(i32) #1
118
119attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
120attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
121attributes #2 = { nounwind readnone }
122attributes #3 = { nounwind }
123
124!llvm.ident = !{!0}
125
126!0 = !{!"clang version 3.7.0 (trunk 227474) (llvm/trunk 227508)"}
127