1 ; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
3 ; This test is based on the following code:
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.
17 ;ModuleID = 'cppeh-catch-scalar.cpp'
18 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
19 target triple = "x86_64-pc-windows-msvc"
21 @_ZTIi = external constant i8*
23 ; The function entry will be rewritten like this.
24 ; CHECK: define void @_Z4testv() #0 {
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]+]]
31 ; Function Attrs: uwtable
32 define void @_Z4testv() #0 {
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
40 invoke.cont: ; preds = %entry
43 ; CHECK: [[LPAD_LABEL]]:{{[ ]+}}; preds = %entry
44 ; CHECK: [[LPAD_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
45 ; CHECK: catch i8* bitcast (i8** @_ZTIi to i8*)
46 ; CHECK-NOT: extractvalue { i8*, i32 }
47 ; CHECK-NOT: store i8*
48 ; CHECK-NOT: store i32
50 ; CHECK: [[RECOVER:\%.+]] = call i8* (...)* @llvm.eh.actions({ i8*, i32 } [[LPAD_VAL]], i32 0, i8* bitcast (i8** @_ZTIi to i8*), i32* %i, i8* bitcast (i8* (i8*, i8*)* @_Z4testv.catch to i8*))
51 ; CHECK: indirectbr i8* [[RECOVER]], [label %try.cont]
53 lpad: ; preds = %entry
54 %tmp = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
55 catch i8* bitcast (i8** @_ZTIi to i8*)
56 %tmp1 = extractvalue { i8*, i32 } %tmp, 0
57 store i8* %tmp1, i8** %exn.slot
58 %tmp2 = extractvalue { i8*, i32 } %tmp, 1
59 store i32 %tmp2, i32* %ehselector.slot
60 br label %catch.dispatch
62 ; CHECK-NOT: catch-dispatch:
64 catch.dispatch: ; preds = %lpad
65 %sel = load i32, i32* %ehselector.slot
66 %tmp3 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) #3
67 %matches = icmp eq i32 %sel, %tmp3
68 br i1 %matches, label %catch, label %eh.resume
72 catch: ; preds = %catch.dispatch
73 %exn11 = load i8*, i8** %exn.slot
74 %i.i8 = bitcast i32* %i to i8*
75 call void @llvm.eh.begincatch(i8* %exn11, i8* %i.i8) #3
76 %tmp7 = load i32, i32* %i, align 4
77 call void @_Z10handle_inti(i32 %tmp7)
78 br label %invoke.cont2
80 ; CHECK-NOT: invoke.cont2:
82 invoke.cont2: ; preds = %catch
83 call void @llvm.eh.endcatch() #3
86 try.cont: ; preds = %invoke.cont2, %invoke.cont
89 ; CHECK-NOT: eh.resume:
91 eh.resume: ; preds = %catch.dispatch
92 %exn3 = load i8*, i8** %exn.slot
93 %sel4 = load i32, i32* %ehselector.slot
94 %lpad.val = insertvalue { i8*, i32 } undef, i8* %exn3, 0
95 %lpad.val5 = insertvalue { i8*, i32 } %lpad.val, i32 %sel4, 1
96 resume { i8*, i32 } %lpad.val5
101 ; CHECK: define internal i8* @_Z4testv.catch(i8*, i8*) {
103 ; CHECK: [[RECOVER_I:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @_Z4testv to i8*), i8* %1, i32 0)
104 ; CHECK: [[I_PTR1:\%.+]] = bitcast i8* [[RECOVER_I]] to i32*
105 ; CHECK: [[TMP:\%.+]] = load i32, i32* [[I_PTR1]], align 4
106 ; CHECK: call void @_Z10handle_inti(i32 [[TMP]])
107 ; CHECK: ret i8* blockaddress(@_Z4testv, %try.cont)
110 declare void @_Z9may_throwv() #1
112 declare i32 @__CxxFrameHandler3(...)
114 ; Function Attrs: nounwind readnone
115 declare i32 @llvm.eh.typeid.for(i8*) #2
117 declare void @llvm.eh.begincatch(i8*, i8*)
119 declare void @llvm.eh.endcatch()
121 declare void @_Z10handle_inti(i32) #1
123 attributes #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" }
124 attributes #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" }
125 attributes #2 = { nounwind readnone }
126 attributes #3 = { nounwind }
130 !0 = !{!"clang version 3.7.0 (trunk 227474) (llvm/trunk 227508)"}