1 ; RUN: llc < %s -mtriple=armv4t--linux-androideabi -print-machineinstrs=if-converter -o /dev/null 2>&1 | FileCheck %s
2 ; Fix a bug triggered in IfConverterTriangle when CvtBB has multiple
3 ; predecessors.
4 ; PR18752
6 %classK = type { i8, %classF }
7 %classF = type { i8 }
8 %classL = type { %classG, i32, i32 }
9 %classG = type { %classL* }
10 %classM2 = type { %classL }
12 define zeroext i1 @test(%classK* %this, %classM2* nocapture readnone %p1, %classM2* nocapture readnone %p2) align 2 {
13 entry:
14 br i1 undef, label %for.end, label %for.body
16 ; Before if conversion, we have
17 ; for.body -> lor.lhs.false.i (62)
18 ; -> for.cond.backedge (62)
19 ; lor.lhs.false.i -> for.cond.backedge (1048575)
20 ; -> cond.false.i (1)
21 ; Afer if conversion, we have
22 ; for.body -> for.cond.backedge (130023362)
23 ; -> cond.false.i (62)
24 ; CHECK: BB#1: derived from LLVM BB %for.body
25 ; CHECK: Successors according to CFG: BB#2(130023362) BB#4(62)
26 for.body:
27 br i1 undef, label %for.cond.backedge, label %lor.lhs.false.i, !prof !1
29 for.cond.backedge:
30 %tobool = icmp eq %classL* undef, null
31 br i1 %tobool, label %for.end, label %for.body
33 lor.lhs.false.i:
34 %tobool.i.i7 = icmp eq i32 undef, 0
35 br i1 %tobool.i.i7, label %for.cond.backedge, label %cond.false.i
37 cond.false.i:
38 call void @_Z3fn1v()
39 unreachable
41 for.end:
42 br i1 undef, label %if.else.i.i, label %if.then.i.i
44 if.then.i.i:
45 store %classL* null, %classL** undef, align 4
46 br label %_ZN1M6spliceEv.exit
48 if.else.i.i:
49 store %classL* null, %classL** null, align 4
50 br label %_ZN1M6spliceEv.exit
52 _ZN1M6spliceEv.exit:
53 %LIS = getelementptr inbounds %classK* %this, i32 0, i32 1
54 call void @_ZN1F10handleMoveEb(%classF* %LIS, i1 zeroext false)
55 unreachable
56 }
58 declare %classL* @_ZN1M1JI1LS1_EcvPS1_Ev(%classM2*)
59 declare void @_ZN1F10handleMoveEb(%classF*, i1 zeroext)
60 declare void @_Z3fn1v()
62 !0 = !{!"clang version 3.5"}
63 !1 = !{!"branch_weights", i32 62, i32 62}