1 ; RUN: llc < %s -verify-coalescing 2 ; PR14732 3 target 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" 4 target 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 17 define void @f() nounwind uwtable ssp { 18 entry: 19 %i = alloca i32, align 4 20 br label %for.cond 21 22 for.cond: ; preds = %for.inc34, %entry 23 %i.0.load44 = phi i32 [ %inc35, %for.inc34 ], [ undef, %entry ] 24 %pi.0 = phi i32* [ %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 28 for.body: ; preds = %for.cond 29 store i32 0, i32* @c, align 4 30 br label %for.body2 31 32 for.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 37 if.then: ; preds = %for.body2 38 store i32 0, i32* %i, align 4 39 br label %for.body6 40 41 for.body6: ; preds = %if.then, %for.body6 42 store i32 0, i32* %i, align 4 43 br i1 true, label %for.body6, label %for.inc 44 45 if.then10: ; preds = %for.body2 46 store i32 1, i32* @b, align 4 47 ret void 48 49 for.inc: ; preds = %for.body6 50 br i1 undef, label %for.body2, label %if.end30 51 52 while.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 57 while.cond: ; preds = %while.condthread-pre-split, %while.cond 58 %p2.1.in = phi i32* [ %pi.3.ph, %while.cond ], [ %i, %while.condthread-pre-split ] 59 %p2.1 = bitcast i32* %p2.1.in to i16* 60 br i1 %tobool19, label %while.end, label %while.cond 61 62 while.end: ; preds = %while.cond 63 %inc20 = add nsw i32 %inc2060, 1 64 %tobool21 = icmp eq i32 %inc2060, 0 65 br i1 %tobool21, label %for.inc27.backedge, label %if.then22 66 67 for.inc27.backedge: ; preds = %while.end, %if.then22 68 %inc28 = add nsw i32 %0, 1 69 store i32 %inc28, i32* @b, align 4 70 %tobool17 = icmp eq i32 %inc28, 0 71 br i1 %tobool17, label %for.inc27.if.end30.loopexit56_crit_edge, label %while.condthread-pre-split 72 73 if.then22: ; preds = %while.end 74 %1 = load i16, i16* %p2.1, align 2 75 %tobool23 = icmp eq i16 %1, 0 76 br i1 %tobool23, label %for.inc27.backedge, label %label.loopexit 77 78 label.loopexit: ; preds = %if.then22 79 store i32 %inc20, i32* @a, align 4 80 %inc2858 = add nsw i32 %0, 1 81 store i32 %inc2858, i32* @b, align 4 82 %tobool1759 = icmp eq i32 %inc2858, 0 83 br i1 %tobool1759, label %if.end30, label %while.condthread-pre-split 84 85 for.inc27.if.end30.loopexit56_crit_edge: ; preds = %for.inc27.backedge 86 store i32 %inc20, i32* @a, align 4 87 br label %if.end30 88 89 if.end30: ; preds = %for.inc27.if.end30.loopexit56_crit_edge, %label.loopexit, %label.preheader, %for.inc 90 %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 ] 91 %pi.4 = phi i32* [ %i, %for.inc ], [ %pi.3.ph, %label.preheader ], [ %pi.3.ph, %label.loopexit ], [ %pi.3.ph, %for.inc27.if.end30.loopexit56_crit_edge ] 92 %2 = load i32, i32* %pi.4, align 4 93 %tobool31 = icmp eq i32 %2, 0 94 br i1 %tobool31, label %for.inc34, label %label.preheader 95 96 for.inc34: ; preds = %if.end30 97 %inc35 = add nsw i32 %i.0.load46, 1 98 store i32 %inc35, i32* %i, align 4 99 br label %for.cond 100 101 for.end36: ; preds = %for.cond 102 store i32 1, i32* %i, align 4 103 %3 = load i32, i32* @c, align 4 104 %tobool37 = icmp eq i32 %3, 0 105 br i1 %tobool37, label %label.preheader, label %land.rhs 106 107 land.rhs: ; preds = %for.end36 108 store i32 0, i32* @a, align 4 109 br label %label.preheader 110 111 label.preheader: ; preds = %for.end36, %if.end30, %land.rhs 112 %i.0.load4669 = phi i32 [ 1, %land.rhs ], [ %i.0.load46, %if.end30 ], [ 1, %for.end36 ] 113 %pi.3.ph = phi i32* [ %pi.0, %land.rhs ], [ %pi.4, %if.end30 ], [ %pi.0, %for.end36 ] 114 %4 = load i32, i32* @b, align 4 115 %inc285863 = add nsw i32 %4, 1 116 store i32 %inc285863, i32* @b, align 4 117 %tobool175964 = icmp eq i32 %inc285863, 0 118 br i1 %tobool175964, label %if.end30, label %while.condthread-pre-split.lr.ph.lr.ph 119 120 while.condthread-pre-split.lr.ph.lr.ph: ; preds = %label.preheader 121 %.pr50 = load i32, i32* @d, align 4 122 %tobool19 = icmp eq i32 %.pr50, 0 123 %a.promoted.pre = load i32, i32* @a, align 4 124 br label %while.condthread-pre-split 125 } 126
