llvm-6502/test/Transforms/LoopSimplify/2011-12-14-LandingpadHeader.ll
Philip Reames 61a76b2d4a Teach SplitBlockPredecessors how to handle landingpad blocks.
Patch by: Igor Laevsky <igor@azulsystems.com>

"Currently SplitBlockPredecessors generates incorrect code in case if basic block we are going to split has a landingpad. Also seems like it is fairly common case among it's users to conditionally call either SplitBlockPredecessors or SplitLandingPadPredecessors. Because of this I think it is reasonable to add this condition directly into SplitBlockPredecessors."

Differential Revision: http://reviews.llvm.org/D7157



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227390 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-28 23:06:47 +00:00

46 lines
1.3 KiB
LLVM

; RUN: opt < %s -loop-simplify -S | FileCheck %s
; PR11575
@catchtypeinfo = external unnamed_addr constant { i8*, i8*, i8* }
define void @main() uwtable ssp {
entry:
invoke void @f1()
to label %try.cont19 unwind label %catch
; CHECK: catch.preheader:
; CHECK-NEXT: landingpad
; CHECK: br label %catch
; CHECK: catch.preheader.split-lp:
; CHECK-NEXT: landingpad
; CHECK: br label %catch
catch: ; preds = %if.else, %entry
%0 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
catch i8* bitcast ({ i8*, i8*, i8* }* @catchtypeinfo to i8*)
invoke void @f3()
to label %if.else unwind label %eh.resume
if.else: ; preds = %catch
invoke void @f2()
to label %try.cont19 unwind label %catch
try.cont19: ; preds = %if.else, %entry
ret void
eh.resume: ; preds = %catch
%1 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
cleanup
catch i8* bitcast ({ i8*, i8*, i8* }* @catchtypeinfo to i8*)
resume { i8*, i32 } undef
}
declare i32 @__gxx_personality_v0(...)
declare void @f1()
declare void @f2()
declare void @f3()