1; RUN: opt -passes=jump-threading -S < %s | FileCheck %s 2@a = common dso_local local_unnamed_addr global i16 0, align 2 3 4; Function Attrs: nofree norecurse nounwind 5define internal fastcc void @s() unnamed_addr { 6; CHECK-LABEL: @s( 7; CHECK-NEXT: for.cond1.preheader.lr.ph: 8; CHECK-NEXT: br label [[FOR_COND1_PREHEADER:%.*]] 9; CHECK: for.cond1.preheader: 10; CHECK-NEXT: [[DOTPR_I_19:%.*]] = phi i32 [ undef, [[FOR_COND1_PREHEADER_LR_PH:%.*]] ], [ 0, [[FOR_INC_SPLIT_1:%.*]] ] 11; CHECK-NEXT: [[TMP0:%.*]] = phi i16 [ undef, [[FOR_COND1_PREHEADER_LR_PH]] ], [ [[INC9:%.*]], [[FOR_INC_SPLIT_1]] ] 12; CHECK-NEXT: [[TOBOOL4_I:%.*]] = icmp eq i32 [[DOTPR_I_19]], 0 13; CHECK-NEXT: br i1 [[TOBOOL4_I]], label [[FOR_INC_SPLIT_1]], label [[FOR_BODY_LR_PH_I:%.*]] 14; CHECK: for.body.lr.ph.i: 15; CHECK-NEXT: ret void 16; CHECK: for.cond.for.end10_crit_edge: 17; CHECK-NEXT: ret void 18; CHECK: for.inc.split.1: 19; CHECK-NEXT: [[INC9]] = add i16 [[TMP0]], 1 20; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i16 [[INC9]], 0 21; CHECK-NEXT: br i1 [[TOBOOL]], label [[FOR_COND_FOR_END10_CRIT_EDGE:%.*]], label [[FOR_COND1_PREHEADER]] 22; 23for.cond1.preheader.lr.ph: 24 br label %for.cond1.preheader 25 26for.cond1.preheader: ; preds = %for.inc.split.1, %for.cond1.preheader.lr.ph 27 %.pr.i.19 = phi i32 [ undef, %for.cond1.preheader.lr.ph ], [ 0, %for.inc.split.1 ] 28 %0 = phi i16 [ undef, %for.cond1.preheader.lr.ph ], [ %inc9, %for.inc.split.1 ] 29 %tobool4.i = icmp eq i32 %.pr.i.19, 0 30 br i1 %tobool4.i, label %t.exit, label %for.body.lr.ph.i 31 32for.body.lr.ph.i: ; preds = %for.cond1.preheader 33 ret void 34 35t.exit: ; preds = %for.cond1.preheader 36 br label %for.inc.split 37 38for.inc.split: ; preds = %t.exit 39 %tobool4.i.1 = icmp eq i32 %.pr.i.19, 0 40 br i1 %tobool4.i.1, label %for.inc.split.1, label %for.body.lr.ph.i.1 41 42for.cond.for.end10_crit_edge: ; preds = %for.inc.split.1 43 ret void 44 45for.body.lr.ph.i.1: ; preds = %for.inc.split 46 br label %for.body.lr.ph.split.i.1 47 48for.body.lr.ph.split.i.1: ; preds = %for.body.lr.ph.i.1 49 br label %for.body.preheader.i.1 50 51for.body.preheader.i.1: ; preds = %for.body.lr.ph.split.i.1 52 br label %for.body.i.us.1.preheader 53 54for.body.i.us.1.preheader: ; preds = %for.body.preheader.i.1 55 br label %for.body.i.us.1 56 57for.body.i.us.1: ; preds = %lor.end.i.us.1, %for.body.i.us.1.preheader 58 %.b.i.us.1 = phi i1 [ %spec.select44.i.us.1, %lor.end.i.us.1 ], [ undef, %for.body.i.us.1.preheader ] 59 br i1 %.b.i.us.1, label %lor.end.i.us.1, label %lor.rhs.i.us.1 60 61lor.rhs.i.us.1: ; preds = %for.body.i.us.1 62 %conv5.i.us.1 = trunc i32 undef to i8 63 br label %lor.end.i.us.1 64 65lor.end.i.us.1: ; preds = %lor.rhs.i.us.1, %for.body.i.us.1 66 %.b31.i.us.1 = or i1 undef, %.b.i.us.1 67 %spec.select44.i.us.1 = or i1 undef, %.b31.i.us.1 68 br i1 undef, label %for.end18.loopexit42.i.1.loopexit, label %for.body.i.us.1 69 70for.end18.loopexit42.i.1.loopexit: ; preds = %lor.end.i.us.1 71 br label %for.end18.loopexit42.i.1 72 73for.end18.loopexit42.i.1: ; preds = %for.end18.loopexit42.i.1.loopexit 74 br label %for.inc.split.1 75 76for.inc.split.1: ; preds = %for.end18.loopexit42.i.1, %for.inc.split 77 %inc9 = add i16 %0, 1 78 %tobool = icmp eq i16 %inc9, 0 79 br i1 %tobool, label %for.cond.for.end10_crit_edge, label %for.cond1.preheader 80} 81