1 ; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
3 ; This test was generated from the following code.
9 ; } catch(...) { throw; }
22 ; These two functions result in functionally equivalent code, but the last
23 ; catch block contains a call to llvm.eh.endcatch that tripped up processing
26 ; The main purpose of this test is to verify that we can correctly
27 ; handle the case of nested landing pads that return directly to a block in
28 ; the parent function.
30 ; ModuleID = 'cppeh-nested-rethrow.cpp'
31 target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
32 target triple = "x86_64-pc-windows-msvc"
34 %rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
35 %eh.CatchableType = type { i32, i32, i32, i32, i32, i32, i32 }
36 %eh.CatchableTypeArray.1 = type { i32, [1 x i32] }
37 %eh.ThrowInfo = type { i32, i32, i32, i32 }
39 $"\01??_R0H@8" = comdat any
41 $"_CT??_R0H@84" = comdat any
47 @"\01??_7type_info@@6B@" = external constant i8*
48 @"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
49 @__ImageBase = external constant i8
50 @"_CT??_R0H@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0, i32 -1, i32 0, i32 4, i32 0 }, section ".xdata", comdat
51 @_CTA1H = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableType* @"_CT??_R0H@84" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32)] }, section ".xdata", comdat
52 @_TI1H = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableTypeArray.1* @_CTA1H to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, section ".xdata", comdat
54 ; CHECK-LABEL: define void @"\01?test1@@YAXXZ"()
56 ; CHECK: call void (...) @llvm.localescape
58 ; Function Attrs: nounwind uwtable
59 define void @"\01?test1@@YAXXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
61 %tmp = alloca i32, align 4
62 %exn.slot = alloca i8*
63 %ehselector.slot = alloca i32
64 store i32 1, i32* %tmp
65 %0 = bitcast i32* %tmp to i8*
66 invoke void @_CxxThrowException(i8* %0, %eh.ThrowInfo* @_TI1H) #2
67 to label %unreachable unwind label %lpad
69 lpad: ; preds = %entry
70 %1 = landingpad { i8*, i32 }
72 %2 = extractvalue { i8*, i32 } %1, 0
73 store i8* %2, i8** %exn.slot
74 %3 = extractvalue { i8*, i32 } %1, 1
75 store i32 %3, i32* %ehselector.slot
78 catch: ; preds = %lpad
79 %exn = load i8*, i8** %exn.slot
80 call void @llvm.eh.begincatch(i8* %exn, i8* null) #1
81 invoke void @_CxxThrowException(i8* null, %eh.ThrowInfo* null) #2
82 to label %unreachable unwind label %lpad1
84 lpad1: ; preds = %catch
85 %4 = landingpad { i8*, i32 }
87 %5 = extractvalue { i8*, i32 } %4, 0
88 store i8* %5, i8** %exn.slot
89 %6 = extractvalue { i8*, i32 } %4, 1
90 store i32 %6, i32* %ehselector.slot
93 catch2: ; preds = %lpad1
94 %exn3 = load i8*, i8** %exn.slot
95 call void @llvm.eh.begincatch(i8* %exn3, i8* null) #1
96 call void @llvm.eh.endcatch() #1
99 ; This block should not be eliminated.
101 try.cont.4: ; preds = %catch2, %try.cont
104 try.cont: ; No predecessors!
107 unreachable: ; preds = %catch, %entry
112 declare void @_CxxThrowException(i8*, %eh.ThrowInfo*)
114 declare i32 @__CxxFrameHandler3(...)
116 ; Function Attrs: nounwind
117 declare void @llvm.eh.begincatch(i8* nocapture, i8* nocapture) #1
119 ; Function Attrs: nounwind
120 declare void @llvm.eh.endcatch() #1
122 ; CHECK-LABEL: define void @"\01?test2@@YAXXZ"()
124 ; CHECK: call void (...) @llvm.localescape
126 ; Function Attrs: nounwind uwtable
127 define void @"\01?test2@@YAXXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
129 %tmp = alloca i32, align 4
130 %exn.slot = alloca i8*
131 %ehselector.slot = alloca i32
132 store i32 1, i32* %tmp
133 %0 = bitcast i32* %tmp to i8*
134 invoke void @_CxxThrowException(i8* %0, %eh.ThrowInfo* @_TI1H) #2
135 to label %unreachable unwind label %lpad
137 lpad: ; preds = %entry
138 %1 = landingpad { i8*, i32 }
140 %2 = extractvalue { i8*, i32 } %1, 0
141 store i8* %2, i8** %exn.slot
142 %3 = extractvalue { i8*, i32 } %1, 1
143 store i32 %3, i32* %ehselector.slot
146 catch: ; preds = %lpad
147 %exn = load i8*, i8** %exn.slot
148 call void @llvm.eh.begincatch(i8* %exn, i8* null) #1
149 invoke void @_CxxThrowException(i8* null, %eh.ThrowInfo* null) #2
150 to label %unreachable unwind label %lpad1
152 lpad1: ; preds = %catch
153 %4 = landingpad { i8*, i32 }
155 %5 = extractvalue { i8*, i32 } %4, 0
156 store i8* %5, i8** %exn.slot
157 %6 = extractvalue { i8*, i32 } %4, 1
158 store i32 %6, i32* %ehselector.slot
161 catch2: ; preds = %lpad1
162 %exn3 = load i8*, i8** %exn.slot
163 call void @llvm.eh.begincatch(i8* %exn3, i8* null) #1
164 call void @llvm.eh.endcatch() #1
167 ; This block should not be eliminated.
169 ; The endcatch call should be eliminated.
170 ; CHECK-NOT: call void @llvm.eh.endcatch()
171 try.cont: ; preds = %catch2
172 call void @llvm.eh.endcatch() #1
175 try.cont.4: ; preds = %try.cont
178 unreachable: ; preds = %catch, %entry
183 ; The outlined test1.catch handler should return to a valid block address.
184 ; CHECK-LABEL: define internal i8* @"\01?test1@@YAXXZ.catch"(i8*, i8*)
185 ; CHECK-NOT: ret i8* inttoptr (i32 1 to i8*)
188 ; The outlined test1.catch1 handler should not contain a return instruction.
189 ; CHECK-LABEL: define internal i8* @"\01?test1@@YAXXZ.catch.1"(i8*, i8*)
193 ; The outlined test2.catch handler should return to a valid block address.
194 ; CHECK-LABEL: define internal i8* @"\01?test2@@YAXXZ.catch"(i8*, i8*)
195 ; CHECK-NOT: ret i8* inttoptr (i32 1 to i8*)
198 ; The outlined test2.catch2 handler should not contain a return instruction.
199 ; CHECK-LABEL: define internal i8* @"\01?test2@@YAXXZ.catch.2"(i8*, i8*)
204 attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
205 attributes #1 = { nounwind }
206 attributes #2 = { noreturn }
208 !llvm.module.flags = !{!0}
211 !0 = !{i32 1, !"PIC Level", i32 2}
212 !1 = !{!"clang version 3.7.0 (trunk 236059)"}