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llvm-6502/test/CodeGen/WinEH/cppeh-cleanups.ll
T
David Majnemer 0a8ff297ad [WinEH] Run cleanup handlers when an exception is thrown 
Generate tables in the .xdata section representing what actions to take
when an exception is thrown.  This currently fills in state for
cleanups, catch handlers are still unfinished.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233636 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-30 22:58:10 +00:00

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; RUN: llc < %s | FileCheck %s
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 }
%struct.S = type { i8 }
$"\01??_DS@@QEAA@XZ" = comdat any
$"\01??_R0H@8" = comdat any
$"_CT??_R0H@84" = comdat any
$_CTA1H = comdat any
$_TI1H = comdat any
@"\01??_7type_info@@6B@" = external constant i8*
@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
@__ImageBase = external constant i8
@"_CT??_R0H@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0, i32 -1, i32 0, i32 4, i32 0 }, section ".xdata", comdat
@_CTA1H = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableType* @"_CT??_R0H@84" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32)] }, section ".xdata", comdat
@_TI1H = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableTypeArray.1* @_CTA1H to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, section ".xdata", comdat
; CHECK-LABEL: ?test1@@YAXXZ":
; CHECK: .seh_handlerdata
; CHECK-NEXT: .long ("$cppxdata$?test1@@YAXXZ")@IMGREL
; CHECK-NEXT:"$cppxdata$?test1@@YAXXZ":
; CHECK-NEXT: .long 429065506
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long ("$stateUnwindMap$?test1@@YAXXZ")@IMGREL
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long ("$ip2state$?test1@@YAXXZ")@IMGREL
; CHECK-NEXT: .long 64
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 1
; CHECK-NEXT:"$stateUnwindMap$?test1@@YAXXZ":
; CHECK-NEXT: .long -1
; CHECK-NEXT: .long "?test1@@YAXXZ.cleanup"@IMGREL
; CHECK-NEXT:"$ip2state$?test1@@YAXXZ":
; CHECK-NEXT: .long .Ltmp0@IMGREL
; CHECK-NEXT: .long 0
define void @"\01?test1@@YAXXZ"() #0 {
entry:
%unwindhelp = alloca i64
%tmp = alloca i32, align 4
%exn.slot = alloca i8*
%ehselector.slot = alloca i32
store i32 0, i32* %tmp
%0 = bitcast i32* %tmp to i8*
call void (...)* @llvm.frameescape()
store volatile i64 -2, i64* %unwindhelp
%1 = bitcast i64* %unwindhelp to i8*
call void @llvm.eh.unwindhelp(i8* %1)
invoke void @_CxxThrowException(i8* %0, %eh.ThrowInfo* @_TI1H) #8
to label %unreachable unwind label %lpad1
lpad1: ; preds = %entry
%2 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
cleanup
%recover = call i8* (...)* @llvm.eh.actions(i32 0, void (i8*, i8*)* @"\01?test1@@YAXXZ.cleanup")
indirectbr i8* %recover, []
unreachable: ; preds = %entry
unreachable
}
declare void @_CxxThrowException(i8*, %eh.ThrowInfo*)
declare i32 @__CxxFrameHandler3(...)
; Function Attrs: nounwind
define linkonce_odr void @"\01??_DS@@QEAA@XZ"(%struct.S* %this) unnamed_addr #1 comdat align 2 {
entry:
%this.addr = alloca %struct.S*, align 8
store %struct.S* %this, %struct.S** %this.addr, align 8
%this1 = load %struct.S*, %struct.S** %this.addr
call void @"\01??1S@@QEAA@XZ"(%struct.S* %this1) #4
ret void
}
; CHECK-LABEL: "?test2@@YAX_N@Z":
; CHECK: .seh_handlerdata
; CHECK-NEXT: .long ("$cppxdata$?test2@@YAX_N@Z")@IMGREL
; CHECK-NEXT:"$cppxdata$?test2@@YAX_N@Z":
; CHECK-NEXT: .long 429065506
; CHECK-NEXT: .long 2
; CHECK-NEXT: .long ("$stateUnwindMap$?test2@@YAX_N@Z")@IMGREL
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 4
; CHECK-NEXT: .long ("$ip2state$?test2@@YAX_N@Z")@IMGREL
; CHECK-NEXT: .long 64
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 1
; CHECK-NEXT:"$stateUnwindMap$?test2@@YAX_N@Z":
; CHECK-NEXT: .long -1
; CHECK-NEXT: .long "?test2@@YAX_N@Z.cleanup"@IMGREL
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long "?test2@@YAX_N@Z.cleanup1"@IMGREL
; CHECK-NEXT:"$ip2state$?test2@@YAX_N@Z":
; CHECK-NEXT: .long .Lfunc_begin1@IMGREL
; CHECK-NEXT: .long -1
; CHECK-NEXT: .long .Ltmp7@IMGREL
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long .Ltmp9@IMGREL
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long .Ltmp12@IMGREL
; CHECK-NEXT: .long 0
define void @"\01?test2@@YAX_N@Z"(i1 zeroext %b) #2 {
entry:
%unwindhelp = alloca i64
%b.addr = alloca i8, align 1
%s = alloca %struct.S, align 1
%exn.slot = alloca i8*
%ehselector.slot = alloca i32
%s1 = alloca %struct.S, align 1
%frombool = zext i1 %b to i8
store i8 %frombool, i8* %b.addr, align 1
call void @"\01?may_throw@@YAXXZ"()
call void (...)* @llvm.frameescape(%struct.S* %s, %struct.S* %s1)
store volatile i64 -2, i64* %unwindhelp
%0 = bitcast i64* %unwindhelp to i8*
call void @llvm.eh.unwindhelp(i8* %0)
invoke void @"\01?may_throw@@YAXXZ"()
to label %invoke.cont unwind label %lpad1
invoke.cont: ; preds = %entry
%1 = load i8, i8* %b.addr, align 1
%tobool = trunc i8 %1 to i1
br i1 %tobool, label %if.then, label %if.else
if.then: ; preds = %invoke.cont
invoke void @"\01?may_throw@@YAXXZ"()
to label %invoke.cont3 unwind label %lpad3
invoke.cont3: ; preds = %if.then
call void @"\01??_DS@@QEAA@XZ"(%struct.S* %s1) #4
br label %if.end
lpad1: ; preds = %entry, %if.end
%2 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
cleanup
%recover = call i8* (...)* @llvm.eh.actions(i32 0, void (i8*, i8*)* @"\01?test2@@YAX_N@Z.cleanup")
indirectbr i8* %recover, []
lpad3: ; preds = %if.then
%3 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
cleanup
%recover4 = call i8* (...)* @llvm.eh.actions(i32 0, void (i8*, i8*)* @"\01?test2@@YAX_N@Z.cleanup1", i32 0, void (i8*, i8*)* @"\01?test2@@YAX_N@Z.cleanup")
indirectbr i8* %recover4, []
if.else: ; preds = %invoke.cont
call void @"\01?dont_throw@@YAXXZ"() #4
br label %if.end
if.end: ; preds = %if.else, %invoke.cont3
invoke void @"\01?may_throw@@YAXXZ"()
to label %invoke.cont4 unwind label %lpad1
invoke.cont4: ; preds = %if.end
call void @"\01??_DS@@QEAA@XZ"(%struct.S* %s) #4
ret void
}
declare void @"\01?may_throw@@YAXXZ"() #3
; Function Attrs: nounwind
declare void @"\01?dont_throw@@YAXXZ"() #1
; Function Attrs: nounwind
declare void @"\01??1S@@QEAA@XZ"(%struct.S*) #1
; Function Attrs: nounwind
declare i8* @llvm.eh.actions(...) #4
define internal void @"\01?test1@@YAXXZ.cleanup"(i8*, i8*) #5 {
entry:
%s = alloca %struct.S, align 1
call void @"\01??_DS@@QEAA@XZ"(%struct.S* %s) #4
ret void
}
; Function Attrs: nounwind
declare void @llvm.frameescape(...) #4
; Function Attrs: nounwind readnone
declare i8* @llvm.framerecover(i8*, i8*, i32) #6
; Function Attrs: nounwind
declare void @llvm.eh.unwindhelp(i8*) #4
define internal void @"\01?test2@@YAX_N@Z.cleanup"(i8*, i8*) #7 {
entry:
%s.i8 = call i8* @llvm.framerecover(i8* bitcast (void (i1)* @"\01?test2@@YAX_N@Z" to i8*), i8* %1, i32 0)
%s = bitcast i8* %s.i8 to %struct.S*
call void @"\01??_DS@@QEAA@XZ"(%struct.S* %s) #4
ret void
}
define internal void @"\01?test2@@YAX_N@Z.cleanup1"(i8*, i8*) #7 {
entry:
%s1.i8 = call i8* @llvm.framerecover(i8* bitcast (void (i1)* @"\01?test2@@YAX_N@Z" to i8*), i8* %1, i32 1)
%s1 = bitcast i8* %s1.i8 to %struct.S*
call void @"\01??_DS@@QEAA@XZ"(%struct.S* %s1) #4
ret void
}
attributes #0 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" "wineh-parent"="?test1@@YAXXZ" }
attributes #1 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #2 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" "wineh-parent"="?test2@@YAX_N@Z" }
attributes #3 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #4 = { nounwind }
attributes #5 = { "wineh-parent"="?test1@@YAXXZ" }
attributes #6 = { nounwind readnone }
attributes #7 = { "wineh-parent"="?test2@@YAX_N@Z" }
attributes #8 = { noreturn }
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