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|
; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
; This test is based on the following code:
;
; class Obj {
; public:
; ~Obj();
; };
;
; void test(void)
; {
; try {
; Obj o;
; throw 1;
; } catch (...) {
; throw;
; }
; }
; ModuleID = 'cppeh-catch-and-throw.cpp'
target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc"
%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
%eh.CatchableType = type { i32, i32, i32, i32, i32, i32, i32 }
%eh.CatchableTypeArray.1 = type { i32, [1 x i32] }
%eh.ThrowInfo = type { i32, i32, i32, i32 }
%class.Obj = type { i8 }
$"\01??_R0H@8" = comdat any
$"_CT??_R0H@84" = comdat any
$_CTA1H = comdat any
$_TI1H = 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
@__ImageBase = external constant i8
@"_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
@_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
@_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
; This is just a minimal check to verify that main was handled by WinEHPrepare.
; CHECK: define void @"\01?test@@YAXXZ"()
; CHECK: entry:
; CHECK: call void (...) @llvm.frameescape
; CHECK: invoke void @_CxxThrowException
; CHECK: }
; Function Attrs: uwtable
define void @"\01?test@@YAXXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
entry:
%o = alloca %class.Obj, align 1
%tmp = alloca i32, align 4
%exn.slot = alloca i8*
%ehselector.slot = alloca i32
store i32 1, i32* %tmp
%0 = bitcast i32* %tmp to i8*
invoke void @_CxxThrowException(i8* %0, %eh.ThrowInfo* @_TI1H) #3
to label %unreachable unwind label %lpad
lpad: ; preds = %entry
%1 = landingpad { i8*, i32 }
catch i8* null
%2 = extractvalue { i8*, i32 } %1, 0
store i8* %2, i8** %exn.slot
%3 = extractvalue { i8*, i32 } %1, 1
store i32 %3, i32* %ehselector.slot
call void @"\01??1Obj@@QEAA@XZ"(%class.Obj* %o) #2
br label %catch
catch: ; preds = %lpad
%exn = load i8*, i8** %exn.slot
call void @llvm.eh.begincatch(i8* %exn, i8* null) #2
invoke void @_CxxThrowException(i8* null, %eh.ThrowInfo* null) #3
to label %unreachable unwind label %lpad1
lpad1: ; preds = %catch
%4 = landingpad { i8*, i32 }
cleanup
%5 = extractvalue { i8*, i32 } %4, 0
store i8* %5, i8** %exn.slot
%6 = extractvalue { i8*, i32 } %4, 1
store i32 %6, i32* %ehselector.slot
call void @llvm.eh.endcatch() #2
br label %eh.resume
try.cont: ; No predecessors!
ret void
eh.resume: ; preds = %lpad1
%exn2 = load i8*, i8** %exn.slot
%sel = load i32, i32* %ehselector.slot
%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn2, 0
%lpad.val3 = insertvalue { i8*, i32 } %lpad.val, i32 %sel, 1
resume { i8*, i32 } %lpad.val3
unreachable: ; preds = %catch, %entry
unreachable
}
; Verify that we inserted a stub invoke into the outlined cleanup handler.
;
; CHECK-LABEL: define internal void @"\01?test@@YAXXZ.cleanup"(i8*, i8*)
; CHECK: entry:
; CHECK: call i8* @llvm.framerecover
; CHECK: call void @"\01??1Obj@@QEAA@XZ"
; CHECK: invoke void @llvm.donothing()
; CHECK: to label %[[SPLIT_LABEL:.+]] unwind label %[[LPAD_LABEL:.+]]
;
; CHECK: [[SPLIT_LABEL]]
;
; CHECK: [[LPAD_LABEL]]
; CHECK: landingpad { i8*, i32 }
; CHECK: cleanup
; CHECK: unreachable
; CHECK: }
declare void @_CxxThrowException(i8*, %eh.ThrowInfo*)
declare i32 @__CxxFrameHandler3(...)
; Function Attrs: nounwind
declare void @"\01??1Obj@@QEAA@XZ"(%class.Obj*) #1
; Function Attrs: nounwind
declare void @llvm.eh.begincatch(i8* nocapture, i8* nocapture) #2
; Function Attrs: nounwind
declare void @llvm.eh.endcatch() #2
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" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { 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" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #2 = { nounwind }
attributes #3 = { noreturn }
!llvm.module.flags = !{!0}
!llvm.ident = !{!1}
!0 = !{i32 1, !"PIC Level", i32 2}
!1 = !{!"clang version 3.7.0 (trunk 235214) (llvm/trunk 235213)"}
|
