1 files changed, 99 insertions, 0 deletions
diff --git a/test/CodeGen/WinEH/cppeh-min-unwind.ll b/test/CodeGen/WinEH/cppeh-min-unwind.ll
new file mode 100644
index 0000000..a1e97d5
--- /dev/null
+++ b/test/CodeGen/WinEH/cppeh-min-unwind.ll
@@ -0,0 +1,99 @@
+; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
+
+; This test was generated from the following source:
+;
+; class SomeClass {
+; public:
+;   SomeClass();
+;   ~SomeClass();
+; };
+;
+; void test() {
+;   SomeClass obj;
+;   may_throw();
+; }
+
+
+; ModuleID = 'min-unwind.cpp'
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-windows-msvc"
+
+%class.SomeClass = type { [28 x i32] }
+
+; The function entry should be rewritten like this.
+; CHECK: define void @_Z4testv() #0 {
+; CHECK: entry:
+; CHECK:   [[OBJ_PTR:\%.+]] = alloca %class.SomeClass, align 4
+; CHECK:   call void @_ZN9SomeClassC1Ev(%class.SomeClass* [[OBJ_PTR]])
+; CHECK:   call void (...)* @llvm.frameescape(%class.SomeClass* [[OBJ_PTR]])
+; CHECK:   invoke void @_Z9may_throwv()
+; CHECK:           to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]+]]
+
+; Function Attrs: uwtable
+define void @_Z4testv() #0 {
+entry:
+  %obj = alloca %class.SomeClass, align 4
+  %exn.slot = alloca i8*
+  %ehselector.slot = alloca i32
+  call void @_ZN9SomeClassC1Ev(%class.SomeClass* %obj)
+  invoke void @_Z9may_throwv()
+          to label %invoke.cont unwind label %lpad
+
+invoke.cont:                                      ; preds = %entry
+  call void @_ZN9SomeClassD1Ev(%class.SomeClass* %obj)
+  ret void
+
+; CHECK: [[LPAD_LABEL]]:{{[ ]+}}; preds = %entry
+; CHECK:   landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+; CHECK-NEXT:           cleanup
+; CHECK-NEXT:   [[RECOVER:\%.+]] = call i8* (...)* @llvm.eh.actions(i32 0, void (i8*, i8*)* @_Z4testv.cleanup)
+; CHECK-NEXT:   indirectbr i8* [[RECOVER]], []
+
+lpad:                                             ; preds = %entry
+  %tmp = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+          cleanup
+  %tmp1 = extractvalue { i8*, i32 } %tmp, 0
+  store i8* %tmp1, i8** %exn.slot
+  %tmp2 = extractvalue { i8*, i32 } %tmp, 1
+  store i32 %tmp2, i32* %ehselector.slot
+  call void @_ZN9SomeClassD1Ev(%class.SomeClass* %obj)
+  br label %eh.resume
+
+; CHECK-NOT: eh.resume:
+
+eh.resume:                                        ; preds = %lpad
+  %exn = load i8*, i8** %exn.slot
+  %sel = load i32, i32* %ehselector.slot
+  %lpad.val = insertvalue { i8*, i32 } undef, i8* %exn, 0
+  %lpad.val2 = insertvalue { i8*, i32 } %lpad.val, i32 %sel, 1
+  resume { i8*, i32 } %lpad.val2
+
+; CHECK: }
+}
+
+; This cleanup handler should be outlined.
+; CHECK: define internal void @_Z4testv.cleanup(i8*, i8*) {
+; CHECK: entry:
+; CHECK:   [[RECOVER_OBJ:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @_Z4testv to i8*), i8* %1, i32 0)
+; CHECK:   [[OBJ_PTR1:\%.+]] = bitcast i8* [[RECOVER_OBJ]] to %class.SomeClass*
+; CHECK:   call void @_ZN9SomeClassD1Ev(%class.SomeClass* [[OBJ_PTR1]])
+; CHECK:   ret void
+; CHECK: }
+
+declare void @_ZN9SomeClassC1Ev(%class.SomeClass*) #1
+
+declare void @_Z9may_throwv() #1
+
+declare i32 @__CxxFrameHandler3(...)
+
+declare void @_ZN9SomeClassD1Ev(%class.SomeClass*) #1
+
+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" }
+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" }
+attributes #2 = { noinline noreturn nounwind }
+attributes #3 = { noreturn nounwind }
+attributes #4 = { nounwind }
+
+!llvm.ident = !{!0}
+
+!0 = !{!"clang version 3.7.0 (trunk 226027)"}