1; RUN: llc < %s -verify-coalescing 2; PR14732 3target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" 4target triple = "x86_64-apple-macosx10" 5 6@c = common global i32 0, align 4 7@b = common global i32 0, align 4 8@a = common global i32 0, align 4 9@d = common global i32 0, align 4 10 11; This function creates an IMPLICIT_DEF with a long live range, even after 12; ProcessImplicitDefs. 13; 14; The coalescer should be able to deal with all kinds of IMPLICIT_DEF live 15; ranges, even if they are not common. 16 17define void @f() nounwind uwtable ssp { 18entry: 19 %i = alloca i32, align 4 20 br label %for.cond 21 22for.cond: ; preds = %for.inc34, %entry 23 %i.0.load44 = phi i32 [ %inc35, %for.inc34 ], [ undef, %entry ] 24 %pi.0 = phi ptr [ %pi.4, %for.inc34 ], [ undef, %entry ] 25 %tobool = icmp eq i32 %i.0.load44, 0 26 br i1 %tobool, label %for.end36, label %for.body 27 28for.body: ; preds = %for.cond 29 store i32 0, ptr @c, align 4 30 br label %for.body2 31 32for.body2: ; preds = %for.body, %for.inc 33 %i.0.load45 = phi i32 [ %i.0.load44, %for.body ], [ 0, %for.inc ] 34 %tobool3 = icmp eq i32 %i.0.load45, 0 35 br i1 %tobool3, label %if.then10, label %if.then 36 37if.then: ; preds = %for.body2 38 store i32 0, ptr %i, align 4 39 br label %for.body6 40 41for.body6: ; preds = %if.then, %for.body6 42 store i32 0, ptr %i, align 4 43 br i1 true, label %for.body6, label %for.inc 44 45if.then10: ; preds = %for.body2 46 store i32 1, ptr @b, align 4 47 ret void 48 49for.inc: ; preds = %for.body6 50 br i1 undef, label %for.body2, label %if.end30 51 52while.condthread-pre-split: ; preds = %label.loopexit, %while.condthread-pre-split.lr.ph.lr.ph, %for.inc27.backedge 53 %0 = phi i32 [ %inc28, %for.inc27.backedge ], [ %inc285863, %while.condthread-pre-split.lr.ph.lr.ph ], [ %inc2858, %label.loopexit ] 54 %inc2060 = phi i32 [ %inc20, %for.inc27.backedge ], [ %a.promoted.pre, %while.condthread-pre-split.lr.ph.lr.ph ], [ %inc20, %label.loopexit ] 55 br label %while.cond 56 57while.cond: ; preds = %while.condthread-pre-split, %while.cond 58 %p2.1.in = phi ptr [ %pi.3.ph, %while.cond ], [ %i, %while.condthread-pre-split ] 59 br i1 %tobool19, label %while.end, label %while.cond 60 61while.end: ; preds = %while.cond 62 %inc20 = add nsw i32 %inc2060, 1 63 %tobool21 = icmp eq i32 %inc2060, 0 64 br i1 %tobool21, label %for.inc27.backedge, label %if.then22 65 66for.inc27.backedge: ; preds = %while.end, %if.then22 67 %inc28 = add nsw i32 %0, 1 68 store i32 %inc28, ptr @b, align 4 69 %tobool17 = icmp eq i32 %inc28, 0 70 br i1 %tobool17, label %for.inc27.if.end30.loopexit56_crit_edge, label %while.condthread-pre-split 71 72if.then22: ; preds = %while.end 73 %1 = load i16, ptr %p2.1.in, align 2 74 %tobool23 = icmp eq i16 %1, 0 75 br i1 %tobool23, label %for.inc27.backedge, label %label.loopexit 76 77label.loopexit: ; preds = %if.then22 78 store i32 %inc20, ptr @a, align 4 79 %inc2858 = add nsw i32 %0, 1 80 store i32 %inc2858, ptr @b, align 4 81 %tobool1759 = icmp eq i32 %inc2858, 0 82 br i1 %tobool1759, label %if.end30, label %while.condthread-pre-split 83 84for.inc27.if.end30.loopexit56_crit_edge: ; preds = %for.inc27.backedge 85 store i32 %inc20, ptr @a, align 4 86 br label %if.end30 87 88if.end30: ; preds = %for.inc27.if.end30.loopexit56_crit_edge, %label.loopexit, %label.preheader, %for.inc 89 %i.0.load46 = phi i32 [ 0, %for.inc ], [ %i.0.load4669, %label.preheader ], [ %i.0.load4669, %label.loopexit ], [ %i.0.load4669, %for.inc27.if.end30.loopexit56_crit_edge ] 90 %pi.4 = phi ptr [ %i, %for.inc ], [ %pi.3.ph, %label.preheader ], [ %pi.3.ph, %label.loopexit ], [ %pi.3.ph, %for.inc27.if.end30.loopexit56_crit_edge ] 91 %2 = load i32, ptr %pi.4, align 4 92 %tobool31 = icmp eq i32 %2, 0 93 br i1 %tobool31, label %for.inc34, label %label.preheader 94 95for.inc34: ; preds = %if.end30 96 %inc35 = add nsw i32 %i.0.load46, 1 97 store i32 %inc35, ptr %i, align 4 98 br label %for.cond 99 100for.end36: ; preds = %for.cond 101 store i32 1, ptr %i, align 4 102 %3 = load i32, ptr @c, align 4 103 %tobool37 = icmp eq i32 %3, 0 104 br i1 %tobool37, label %label.preheader, label %land.rhs 105 106land.rhs: ; preds = %for.end36 107 store i32 0, ptr @a, align 4 108 br label %label.preheader 109 110label.preheader: ; preds = %for.end36, %if.end30, %land.rhs 111 %i.0.load4669 = phi i32 [ 1, %land.rhs ], [ %i.0.load46, %if.end30 ], [ 1, %for.end36 ] 112 %pi.3.ph = phi ptr [ %pi.0, %land.rhs ], [ %pi.4, %if.end30 ], [ %pi.0, %for.end36 ] 113 %4 = load i32, ptr @b, align 4 114 %inc285863 = add nsw i32 %4, 1 115 store i32 %inc285863, ptr @b, align 4 116 %tobool175964 = icmp eq i32 %inc285863, 0 117 br i1 %tobool175964, label %if.end30, label %while.condthread-pre-split.lr.ph.lr.ph 118 119while.condthread-pre-split.lr.ph.lr.ph: ; preds = %label.preheader 120 %.pr50 = load i32, ptr @d, align 4 121 %tobool19 = icmp eq i32 %.pr50, 0 122 %a.promoted.pre = load i32, ptr @a, align 4 123 br label %while.condthread-pre-split 124} 125