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llvm-mirror/test/CodeGen/WinEH/cppeh-prepared-catch.ll
Andrew Kaylor cd70932cf9 [WinEH] Handle nested landing pads in outlined catch handlers 
Differential Revision: http://reviews.llvm.org/D8596

llvm-svn: 234041
2015-04-03 19:37:50 +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"
; This test case is equivalent to:
; void f() {
; try {
; try {
; may_throw();
; } catch (int &) {
; may_throw();
; }
; may_throw();
; } catch (double) {
; }
; }
%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
%eh.CatchHandlerType = type { i32, i8* }
$"\01??_R0N@8" = comdat any
$"\01??_R0H@8" = comdat any
@"\01??_7type_info@@6B@" = external constant i8*
@"\01??_R0N@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".N\00" }, comdat
@llvm.eh.handlertype.N.0 = private unnamed_addr constant %eh.CatchHandlerType { i32 0, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0N@8" to i8*) }, section "llvm.metadata"
@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
@llvm.eh.handlertype.H.8 = private unnamed_addr constant %eh.CatchHandlerType { i32 8, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*) }, section "llvm.metadata"
define internal i8* @"\01?f@@YAXXZ.catch"(i8*, i8*) #4 {
entry:
%.i8 = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?f@@YAXXZ" to i8*), i8* %1, i32 0)
%2 = bitcast i8* %.i8 to i32**
%3 = bitcast i32** %2 to i8*
invoke void @"\01?may_throw@@YAXXZ"()
to label %invoke.cont2 unwind label %lpad1
invoke.cont2: ; preds = %entry
ret i8* blockaddress(@"\01?f@@YAXXZ", %try.cont)
lpad1: ; preds = %entry
%4 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
cleanup
catch %eh.CatchHandlerType* @llvm.eh.handlertype.N.0
%recover = call i8* (...)* @llvm.eh.actions(i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.N.0 to i8*), i32 1, i8* (i8*, i8*)* @"\01?f@@YAXXZ.catch1")
indirectbr i8* %recover, [label %invoke.cont2]
}
; CHECK-LABEL: "?f@@YAXXZ.catch":
; CHECK: ".L?f@@YAXXZ.catch$parent_frame_offset" = 56
; CHECK: movq %rdx, 56(%rsp)
; CHECK: .seh_handlerdata
; CHECK: .long ("$cppxdata$?f@@YAXXZ")@IMGREL
define internal i8* @"\01?f@@YAXXZ.catch1"(i8*, i8*) #4 {
entry:
%.i8 = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?f@@YAXXZ" to i8*), i8* %1, i32 1)
%2 = bitcast i8* %.i8 to double*
%3 = bitcast double* %2 to i8*
invoke void (...)* @llvm.donothing()
to label %done unwind label %lpad
done:
ret i8* blockaddress(@"\01?f@@YAXXZ", %try.cont8)
lpad: ; preds = %entry
%4 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
cleanup
unreachable
}
; CHECK-LABEL: "?f@@YAXXZ.catch1":
; CHECK: ".L?f@@YAXXZ.catch1$parent_frame_offset" = 16
; CHECK: movq %rdx, 16(%rsp)
; CHECK: .seh_handlerdata
; CHECK: .long ("$cppxdata$?f@@YAXXZ")@IMGREL
define void @"\01?f@@YAXXZ"() #0 {
entry:
%unwindhelp = alloca i64
%exn.slot = alloca i8*
%ehselector.slot = alloca i32
%0 = alloca i32*, align 8
%1 = alloca double, align 8
call void (...)* @llvm.frameescape(i32** %0, double* %1)
store volatile i64 -2, i64* %unwindhelp
%2 = bitcast i64* %unwindhelp to i8*
call void @llvm.eh.unwindhelp(i8* %2)
invoke void @"\01?may_throw@@YAXXZ"()
to label %invoke.cont unwind label %lpad2
invoke.cont: ; preds = %entry
br label %try.cont
lpad2: ; preds = %entry
%3 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
catch %eh.CatchHandlerType* @llvm.eh.handlertype.H.8
catch %eh.CatchHandlerType* @llvm.eh.handlertype.N.0
%recover = call i8* (...)* @llvm.eh.actions(i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.H.8 to i8*), i32 0, i8* (i8*, i8*)* @"\01?f@@YAXXZ.catch", i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.N.0 to i8*), i32 1, i8* (i8*, i8*)* @"\01?f@@YAXXZ.catch1")
indirectbr i8* %recover, [label %try.cont, label %try.cont8]
try.cont: ; preds = %lpad2, %invoke.cont
invoke void @"\01?may_throw@@YAXXZ"()
to label %try.cont8 unwind label %lpad1
lpad1:
%4 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
catch %eh.CatchHandlerType* @llvm.eh.handlertype.N.0
%recover2 = call i8* (...)* @llvm.eh.actions(i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.N.0 to i8*), i32 1, i8* (i8*, i8*)* @"\01?f@@YAXXZ.catch1")
indirectbr i8* %recover2, [label %try.cont8]
try.cont8: ; preds = %lpad2, %try.cont
ret void
}
; CHECK-LABEL: "?f@@YAXXZ":
; CHECK: .seh_handlerdata
; CHECK-NEXT: .long ("$cppxdata$?f@@YAXXZ")@IMGREL
; CHECK-NEXT:"$cppxdata$?f@@YAXXZ":
; CHECK-NEXT: .long 429065506
; CHECK-NEXT: .long 4
; CHECK-NEXT: .long ("$stateUnwindMap$?f@@YAXXZ")@IMGREL
; CHECK-NEXT: .long 2
; CHECK-NEXT: .long ("$tryMap$?f@@YAXXZ")@IMGREL
; CHECK-NEXT: .long 3
; CHECK-NEXT: .long ("$ip2state$?f@@YAXXZ")@IMGREL
; CHECK-NEXT: .long 64
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 1
; CHECK-NEXT:"$stateUnwindMap$?f@@YAXXZ":
; CHECK-NEXT: .long -1
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long -1
; CHECK-NEXT: .long 0
; CHECK-NEXT:"$tryMap$?f@@YAXXZ":
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long 2147483647
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long ("$handlerMap$0$?f@@YAXXZ")@IMGREL
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 2
; CHECK-NEXT: .long 2147483647
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long ("$handlerMap$1$?f@@YAXXZ")@IMGREL
; CHECK-NEXT:"$handlerMap$0$?f@@YAXXZ":
; CHECK-NEXT: .long 8
; CHECK-NEXT: .long "??_R0H@8"@IMGREL
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long "?f@@YAXXZ.catch"@IMGREL
; CHECK-NEXT: .long ".L?f@@YAXXZ.catch$parent_frame_offset"
; CHECK-NEXT:"$handlerMap$1$?f@@YAXXZ":
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long "??_R0N@8"@IMGREL
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long "?f@@YAXXZ.catch1"@IMGREL
; CHECK-NEXT: .long ".L?f@@YAXXZ.catch1$parent_frame_offset"
; CHECK-NEXT:"$ip2state$?f@@YAXXZ":
; CHECK-NEXT: .long .Ltmp0@IMGREL
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long .Ltmp13@IMGREL
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long .Ltmp16@IMGREL
; CHECK-NEXT: .long 0
declare void @"\01?may_throw@@YAXXZ"() #1
declare i32 @__CxxFrameHandler3(...)
; 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
; Function Attrs: nounwind
declare void @llvm.eh.endcatch() #3
; Function Attrs: nounwind
declare i8* @llvm.eh.actions(...) #3
; Function Attrs: nounwind
declare void @llvm.frameescape(...) #3
; Function Attrs: nounwind readnone
declare i8* @llvm.framerecover(i8*, i8*, i32) #2
; Function Attrs: nounwind
declare void @llvm.eh.unwindhelp(i8*) #3
declare void @llvm.donothing(...)
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"="?f@@YAXXZ" }
attributes #1 = { "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 = { nounwind readnone }
attributes #3 = { nounwind }
attributes #4 = { "wineh-parent"="?f@@YAXXZ" }
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