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; 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)"}
|
