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llvm-mirror/test/CodeGen/ARM/2011-05-04-MultipleLandingPadSuccs.ll
Roman Lebedev 570b485d61 [CodeGen][SimplifyCFG] Teach DwarfEHPrepare to preserve DomTree
Once the default for SimplifyCFG flips, we can no longer pass nullptr
instead of DomTree to SimplifyCFG, so we need to propagate it here.

We don't strictly need to actually preserve DomTree in DwarfEHPrepare,
but we might as well do it, since it's trivial.
2021-01-02 01:01:19 +03:00

90 lines
2.1 KiB
LLVM

; RUN: llc -simplifycfg-require-and-preserve-domtree=1 < %s -verify-machineinstrs
; <rdar://problem/9187612>
target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:64:64-v128:128:128-a0:0:32-n32"
target triple = "thumbv7-apple-darwin"
define void @func() unnamed_addr align 2 personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*) {
entry:
br label %for.cond
for.cond:
%tmp2 = phi i32 [ 0, %entry ], [ %add, %for.cond.backedge ]
%cmp = icmp ult i32 %tmp2, 14
br i1 %cmp, label %for.body, label %for.end
for.body:
%add = add i32 %tmp2, 1
switch i32 %tmp2, label %sw.default [
i32 0, label %sw.bb
i32 1, label %sw.bb
i32 2, label %sw.bb
i32 4, label %sw.bb
i32 5, label %sw.bb
i32 10, label %sw.bb
]
sw.bb:
invoke void @foo()
to label %invoke.cont17 unwind label %lpad
invoke.cont17:
invoke void @foo()
to label %for.cond.backedge unwind label %lpad26
for.cond.backedge:
br label %for.cond
lpad:
%exn = landingpad { i8*, i32 }
catch i8* null
invoke void @foo()
to label %eh.resume unwind label %terminate.lpad
lpad26:
%exn27 = landingpad { i8*, i32 }
catch i8* null
invoke void @foo()
to label %eh.resume unwind label %terminate.lpad
sw.default:
br label %for.cond.backedge
for.end:
invoke void @foo()
to label %call8.i.i.i.noexc unwind label %lpad44
call8.i.i.i.noexc:
ret void
lpad44:
%exn45 = landingpad { i8*, i32 }
catch i8* null
invoke void @foo()
to label %eh.resume unwind label %terminate.lpad
eh.resume:
%exn.slot.0 = phi { i8*, i32 } [ %exn27, %lpad26 ], [ %exn, %lpad ], [ %exn45, %lpad44 ]
resume { i8*, i32 } %exn.slot.0
terminate.lpad:
%exn51 = landingpad { i8*, i32 }
catch i8* null
tail call void @_ZSt9terminatev() noreturn nounwind
unreachable
}
declare void @foo()
declare i32 @__gxx_personality_sj0(...)
declare void @_Unwind_SjLj_Resume_or_Rethrow(i8*)
declare void @_ZSt9terminatev()
!0 = !{!"any pointer", !1}
!1 = !{!"omnipotent char", !2}
!2 = !{!"Simple C/C++ TBAA"}
!3 = !{!"bool", !1}
!4 = !{!"int", !1}