| ; RUN: llc < %s -verify-coalescing |
| ; PR14732 |
| 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" |
| target triple = "x86_64-apple-macosx10" |
| |
| @c = common global i32 0, align 4 |
| @b = common global i32 0, align 4 |
| @a = common global i32 0, align 4 |
| @d = common global i32 0, align 4 |
| |
| ; This function creates an IMPLICIT_DEF with a long live range, even after |
| ; ProcessImplicitDefs. |
| ; |
| ; The coalescer should be able to deal with all kinds of IMPLICIT_DEF live |
| ; ranges, even if they are not common. |
| |
| define void @f() nounwind uwtable ssp { |
| entry: |
| %i = alloca i32, align 4 |
| br label %for.cond |
| |
| for.cond: ; preds = %for.inc34, %entry |
| %i.0.load44 = phi i32 [ %inc35, %for.inc34 ], [ undef, %entry ] |
| %pi.0 = phi i32* [ %pi.4, %for.inc34 ], [ undef, %entry ] |
| %tobool = icmp eq i32 %i.0.load44, 0 |
| br i1 %tobool, label %for.end36, label %for.body |
| |
| for.body: ; preds = %for.cond |
| store i32 0, i32* @c, align 4, !tbaa !0 |
| br label %for.body2 |
| |
| for.body2: ; preds = %for.body, %for.inc |
| %i.0.load45 = phi i32 [ %i.0.load44, %for.body ], [ 0, %for.inc ] |
| %tobool3 = icmp eq i32 %i.0.load45, 0 |
| br i1 %tobool3, label %if.then10, label %if.then |
| |
| if.then: ; preds = %for.body2 |
| store i32 0, i32* %i, align 4, !tbaa !0 |
| br label %for.body6 |
| |
| for.body6: ; preds = %if.then, %for.body6 |
| store i32 0, i32* %i, align 4 |
| br i1 true, label %for.body6, label %for.inc |
| |
| if.then10: ; preds = %for.body2 |
| store i32 1, i32* @b, align 4, !tbaa !0 |
| ret void |
| |
| for.inc: ; preds = %for.body6 |
| br i1 undef, label %for.body2, label %if.end30 |
| |
| while.condthread-pre-split: ; preds = %label.loopexit, %while.condthread-pre-split.lr.ph.lr.ph, %for.inc27.backedge |
| %0 = phi i32 [ %inc28, %for.inc27.backedge ], [ %inc285863, %while.condthread-pre-split.lr.ph.lr.ph ], [ %inc2858, %label.loopexit ] |
| %inc2060 = phi i32 [ %inc20, %for.inc27.backedge ], [ %a.promoted.pre, %while.condthread-pre-split.lr.ph.lr.ph ], [ %inc20, %label.loopexit ] |
| br label %while.cond |
| |
| while.cond: ; preds = %while.condthread-pre-split, %while.cond |
| %p2.1.in = phi i32* [ %pi.3.ph, %while.cond ], [ %i, %while.condthread-pre-split ] |
| %p2.1 = bitcast i32* %p2.1.in to i16* |
| br i1 %tobool19, label %while.end, label %while.cond |
| |
| while.end: ; preds = %while.cond |
| %inc20 = add nsw i32 %inc2060, 1 |
| %tobool21 = icmp eq i32 %inc2060, 0 |
| br i1 %tobool21, label %for.inc27.backedge, label %if.then22 |
| |
| for.inc27.backedge: ; preds = %while.end, %if.then22 |
| %inc28 = add nsw i32 %0, 1 |
| store i32 %inc28, i32* @b, align 4, !tbaa !0 |
| %tobool17 = icmp eq i32 %inc28, 0 |
| br i1 %tobool17, label %for.inc27.if.end30.loopexit56_crit_edge, label %while.condthread-pre-split |
| |
| if.then22: ; preds = %while.end |
| %1 = load i16* %p2.1, align 2, !tbaa !3 |
| %tobool23 = icmp eq i16 %1, 0 |
| br i1 %tobool23, label %for.inc27.backedge, label %label.loopexit |
| |
| label.loopexit: ; preds = %if.then22 |
| store i32 %inc20, i32* @a, align 4, !tbaa !0 |
| %inc2858 = add nsw i32 %0, 1 |
| store i32 %inc2858, i32* @b, align 4, !tbaa !0 |
| %tobool1759 = icmp eq i32 %inc2858, 0 |
| br i1 %tobool1759, label %if.end30, label %while.condthread-pre-split |
| |
| for.inc27.if.end30.loopexit56_crit_edge: ; preds = %for.inc27.backedge |
| store i32 %inc20, i32* @a, align 4, !tbaa !0 |
| br label %if.end30 |
| |
| if.end30: ; preds = %for.inc27.if.end30.loopexit56_crit_edge, %label.loopexit, %label.preheader, %for.inc |
| %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 ] |
| %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 ] |
| %2 = load i32* %pi.4, align 4, !tbaa !0 |
| %tobool31 = icmp eq i32 %2, 0 |
| br i1 %tobool31, label %for.inc34, label %label.preheader |
| |
| for.inc34: ; preds = %if.end30 |
| %inc35 = add nsw i32 %i.0.load46, 1 |
| store i32 %inc35, i32* %i, align 4 |
| br label %for.cond |
| |
| for.end36: ; preds = %for.cond |
| store i32 1, i32* %i, align 4 |
| %3 = load i32* @c, align 4, !tbaa !0 |
| %tobool37 = icmp eq i32 %3, 0 |
| br i1 %tobool37, label %label.preheader, label %land.rhs |
| |
| land.rhs: ; preds = %for.end36 |
| store i32 0, i32* @a, align 4, !tbaa !0 |
| br label %label.preheader |
| |
| label.preheader: ; preds = %for.end36, %if.end30, %land.rhs |
| %i.0.load4669 = phi i32 [ 1, %land.rhs ], [ %i.0.load46, %if.end30 ], [ 1, %for.end36 ] |
| %pi.3.ph = phi i32* [ %pi.0, %land.rhs ], [ %pi.4, %if.end30 ], [ %pi.0, %for.end36 ] |
| %4 = load i32* @b, align 4, !tbaa !0 |
| %inc285863 = add nsw i32 %4, 1 |
| store i32 %inc285863, i32* @b, align 4, !tbaa !0 |
| %tobool175964 = icmp eq i32 %inc285863, 0 |
| br i1 %tobool175964, label %if.end30, label %while.condthread-pre-split.lr.ph.lr.ph |
| |
| while.condthread-pre-split.lr.ph.lr.ph: ; preds = %label.preheader |
| %.pr50 = load i32* @d, align 4, !tbaa !0 |
| %tobool19 = icmp eq i32 %.pr50, 0 |
| %a.promoted.pre = load i32* @a, align 4, !tbaa !0 |
| br label %while.condthread-pre-split |
| } |
| |
| !0 = metadata !{metadata !"int", metadata !1} |
| !1 = metadata !{metadata !"omnipotent char", metadata !2} |
| !2 = metadata !{metadata !"Simple C/C++ TBAA"} |
| !3 = metadata !{metadata !"short", metadata !1} |
