1 files changed, 244 insertions, 0 deletions
diff --git a/test/CodeGen/WinEH/cppeh-catch-unwind.ll b/test/CodeGen/WinEH/cppeh-catch-unwind.ll
new file mode 100644
index 0000000..3db1635
--- /dev/null
+++ b/test/CodeGen/WinEH/cppeh-catch-unwind.ll
@@ -0,0 +1,244 @@
+; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
+
+; This test was generated from the following source:
+;
+; void test() {
+;   try {
+;     SomeClass obj;
+;     may_throw();
+;     try {
+;       may_throw();
+;     } catch (int) {
+;       handle_exception();
+;     }
+;   } catch (int) {
+;     handle_exception();
+;   }
+; }
+;
+; The code above was compiled with the -O2 option.
+
+; ModuleID = 'catch-unwind.cpp'
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-windows-msvc"
+
+%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
+%class.SomeClass = type { i8 }
+
+$"\01??_R0H@8" = comdat any
+
+@"\01??_7type_info@@6B@" = external constant i8*
+@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
+
+
+; CHECK-LABEL: define void @"\01?test@@YAXXZ"() #0 {
+; CHECK: entry:
+; CHECK:   [[UNWIND_HELP:\%.+]] = alloca i64
+; CHECK:   [[OBJ_PTR:\%.+]] = alloca %class.SomeClass
+; CHECK:   [[TMP0:\%.+]] = alloca i32, align 4
+; CHECK:   [[TMP1:\%.+]] = alloca i32, align 4
+; CHECK:   call void (...)* @llvm.frameescape(i32* [[TMP1]], %class.SomeClass* [[OBJ_PTR]], i32* [[TMP0]])
+; CHECK:   [[UNWIND_HELP_i8:\%.+]] = bitcast i64* [[UNWIND_HELP]] to i8*
+; CHECK:   call void @llvm.eh.unwindhelp(i8* [[UNWIND_HELP_i8]])
+; CHECK:   %call = invoke %class.SomeClass* @"\01??0SomeClass@@QEAA@XZ"(%class.SomeClass* %obj)
+; CHECK:           to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]+]]
+
+; Function Attrs: uwtable
+define void @"\01?test@@YAXXZ"() #0 {
+entry:
+  %obj = alloca %class.SomeClass, align 1
+  %0 = alloca i32, align 4
+  %1 = alloca i32, align 4
+  %call = invoke %class.SomeClass* @"\01??0SomeClass@@QEAA@XZ"(%class.SomeClass* %obj)
+          to label %invoke.cont unwind label %lpad
+
+; CHECK: invoke.cont:
+; CHECK:   invoke void @"\01?may_throw@@YAXXZ"()
+; CHECK:           to label %invoke.cont2 unwind label %[[LPAD1_LABEL:lpad[0-9]+]]
+
+invoke.cont:                                      ; preds = %entry
+  invoke void @"\01?may_throw@@YAXXZ"()
+          to label %invoke.cont2 unwind label %lpad1
+
+; CHECK: invoke.cont2:
+; CHECK:   invoke void @"\01?may_throw@@YAXXZ"()
+; CHECK:           to label %try.cont unwind label %[[LPAD3_LABEL:lpad[0-9]+]]
+
+invoke.cont2:                                     ; preds = %invoke.cont
+  invoke void @"\01?may_throw@@YAXXZ"()
+          to label %try.cont unwind label %lpad3
+
+; CHECK: [[LPAD_LABEL]]:{{[ ]+}}; preds = %entry
+; CHECK:   [[LPAD_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+; CHECK-NEXT:           catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
+; CHECK-NEXT:   [[RECOVER:\%.+]] = call i8* (...)* @llvm.eh.actions(i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32* [[TMP1]], i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch")
+; CHECK-NEXT:   indirectbr i8* [[RECOVER]], [label %try.cont15]
+
+lpad:                                             ; preds = %entry
+  %2 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+          catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
+  %3 = extractvalue { i8*, i32 } %2, 0
+  %4 = extractvalue { i8*, i32 } %2, 1
+  br label %catch.dispatch7
+
+; CHECK: [[LPAD1_LABEL]]:{{[ ]+}}; preds = %invoke.cont
+; CHECK:   [[LPAD1_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+; CHECK-NEXT:           cleanup
+; CHECK-NEXT:           catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
+; CHECK-NEXT:   [[RECOVER1:\%.+]] = call i8* (...)* @llvm.eh.actions(i32 0, void (i8*, i8*)* @"\01?test@@YAXXZ.cleanup", i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32* [[TMP1]], i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch")
+; CHECK-NEXT:   indirectbr i8* [[RECOVER1]], [label %try.cont15]
+
+lpad1:                                            ; preds = %invoke.cont
+  %5 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+          cleanup
+          catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
+  %6 = extractvalue { i8*, i32 } %5, 0
+  %7 = extractvalue { i8*, i32 } %5, 1
+  br label %ehcleanup
+
+; CHECK: [[LPAD3_LABEL]]:{{[ ]+}}; preds = %invoke.cont2
+; CHECK:   [[LPAD3_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+; CHECK-NEXT:           cleanup
+; CHECK-NEXT:           catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
+; CHECK-NEXT:   [[RECOVER3:\%.+]] = call i8* (...)* @llvm.eh.actions(i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32* [[TMP0]], i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch1", i32 0, void (i8*, i8*)* @"\01?test@@YAXXZ.cleanup")
+; CHECK-NEXT:   indirectbr i8* [[RECOVER3]], [label %try.cont]
+
+lpad3:                                            ; preds = %invoke.cont2
+  %8 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+          cleanup
+          catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
+  %9 = extractvalue { i8*, i32 } %8, 0
+  %10 = extractvalue { i8*, i32 } %8, 1
+  %11 = call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)) #3
+  %matches = icmp eq i32 %10, %11
+  br i1 %matches, label %catch, label %ehcleanup
+
+; CHECK-NOT: catch:
+catch:                                            ; preds = %lpad3
+  %12 = bitcast i32* %0 to i8*
+  call void @llvm.eh.begincatch(i8* %9, i8* %12) #3
+  invoke void @"\01?handle_exception@@YAXXZ"()
+          to label %invoke.cont6 unwind label %lpad5
+
+; CHECK-NOT: invoke.cont6:
+invoke.cont6:                                     ; preds = %catch
+  call void @llvm.eh.endcatch() #3
+  br label %try.cont
+
+try.cont:                                         ; preds = %invoke.cont2, %invoke.cont6
+  call void @"\01??1SomeClass@@QEAA@XZ"(%class.SomeClass* %obj) #3
+  br label %try.cont15
+
+; CHECK-NOT: lpad5:
+lpad5:                                            ; preds = %catch
+  %13 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+          cleanup
+          catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
+  %14 = extractvalue { i8*, i32 } %13, 0
+  %15 = extractvalue { i8*, i32 } %13, 1
+  call void @llvm.eh.endcatch() #3
+  br label %ehcleanup
+
+; CHECK-NOT: ehcleanup
+ehcleanup:                                        ; preds = %lpad5, %lpad3, %lpad1
+  %exn.slot.0 = phi i8* [ %14, %lpad5 ], [ %9, %lpad3 ], [ %6, %lpad1 ]
+  %ehselector.slot.0 = phi i32 [ %15, %lpad5 ], [ %10, %lpad3 ], [ %7, %lpad1 ]
+  call void @"\01??1SomeClass@@QEAA@XZ"(%class.SomeClass* %obj) #3
+  br label %catch.dispatch7
+
+; CHECK-NOT: catch.dispatch7:
+catch.dispatch7:                                  ; preds = %ehcleanup, %lpad
+  %exn.slot.1 = phi i8* [ %exn.slot.0, %ehcleanup ], [ %3, %lpad ]
+  %ehselector.slot.1 = phi i32 [ %ehselector.slot.0, %ehcleanup ], [ %4, %lpad ]
+  %16 = call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)) #3
+  %matches9 = icmp eq i32 %ehselector.slot.1, %16
+  br i1 %matches9, label %catch10, label %eh.resume
+
+; CHECK-NOT: catch10:
+catch10:                                          ; preds = %catch.dispatch7
+  %17 = bitcast i32* %1 to i8*
+  call void @llvm.eh.begincatch(i8* %exn.slot.1, i8* %17) #3
+  call void @"\01?handle_exception@@YAXXZ"()
+  br label %invoke.cont13
+
+; CHECK-NOT: invoke.cont13:
+invoke.cont13:                                    ; preds = %catch10
+  call void @llvm.eh.endcatch() #3
+  br label %try.cont15
+
+try.cont15:                                       ; preds = %invoke.cont13, %try.cont
+  ret void
+
+; CHECK-NOT: eh.resume
+eh.resume:                                        ; preds = %catch.dispatch7
+  %lpad.val = insertvalue { i8*, i32 } undef, i8* %exn.slot.1, 0
+  %lpad.val18 = insertvalue { i8*, i32 } %lpad.val, i32 %ehselector.slot.1, 1
+  resume { i8*, i32 } %lpad.val18
+
+; CHECK: }
+}
+
+; CHECK-LABEL: define internal i8* @"\01?test@@YAXXZ.catch"(i8*, i8*) {
+; CHECK: entry:
+; CHECK:   [[RECOVER_TMP1:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 0)
+; CHECK:   [[TMP1_PTR:\%.+]] = bitcast i8* [[RECOVER_TMP1]] to i32*
+; CHECK:   call void @"\01?handle_exception@@YAXXZ"()
+; CHECK:   ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont15)
+; CHECK: }
+
+; CHECK-LABEL: define internal void @"\01?test@@YAXXZ.cleanup"(i8*, i8*) {
+; CHECK: entry:
+; CHECK:   [[RECOVER_OBJ:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 1)
+; CHECK:   [[OBJ_PTR:\%.+]] = bitcast i8* %obj.i8 to %class.SomeClass*
+; CHECK:   call void @"\01??1SomeClass@@QEAA@XZ"(%class.SomeClass* [[OBJ_PTR]]) #3
+; CHECK:   ret void
+; CHECK: }
+
+; CHECK-LABEL: define internal i8* @"\01?test@@YAXXZ.catch1"(i8*, i8*) {
+; CHECK: entry:
+; CHECK:   [[RECOVER_TMP0:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 2)
+; CHECK:   [[TMP0_PTR:\%.+]] = bitcast i8* [[RECOVER_TMP0]] to i32*
+; CHECK:   invoke void @"\01?handle_exception@@YAXXZ"()
+; CHECK:           to label %invoke.cont6 unwind label %[[LPAD5_LABEL:lpad[0-9]+]]
+;
+; CHECK: invoke.cont6:                                     ; preds = %entry
+; CHECK:   ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont)
+;
+; CHECK: [[LPAD5_LABEL]]:{{[ ]+}}; preds = %entry
+; CHECK:   [[LPAD5_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+; CHECK:           cleanup
+; CHECK:           catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
+; CHECK:   unreachable
+; CHECK: }
+
+declare %class.SomeClass* @"\01??0SomeClass@@QEAA@XZ"(%class.SomeClass* returned) #1
+
+declare i32 @__CxxFrameHandler3(...)
+
+declare void @"\01?may_throw@@YAXXZ"() #1
+
+; Function Attrs: nounwind readnone
+declare i32 @llvm.eh.typeid.for(i8*) #2
+
+; Function Attrs: nounwind
+declare void @llvm.eh.begincatch(i8* nocapture, i8* nocapture) #3
+
+declare void @"\01?handle_exception@@YAXXZ"() #1
+
+; Function Attrs: nounwind
+declare void @llvm.eh.endcatch() #3
+
+; Function Attrs: nounwind
+declare void @"\01??1SomeClass@@QEAA@XZ"(%class.SomeClass*) #4
+
+attributes #0 = { 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" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #2 = { nounwind readnone }
+attributes #3 = { nounwind }
+attributes #4 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
+
+!llvm.module.flags = !{!0}
+!llvm.ident = !{!1}
+
+!0 = !{i32 1, !"PIC Level", i32 2}
+!1 = !{!"clang version 3.7.0 (trunk 232069) (llvm/trunk 232070)"}