1 ; RUN: llc < %s -verify-coalescing
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"
4 target triple = "x86_64-apple-macosx10.7.0"
6 @d = common global i32 0, align 4
7 @c = common global i32 0, align 4
8 @b = common global i32 0, align 4
9 @h = common global i32 0, align 4
10 @f = common global i32 0, align 4
11 @g = common global i32 0, align 4
12 @a = common global i16 0, align 2
13 @e = common global i32 0, align 4
15 define void @fn1() nounwind uwtable ssp {
17 %0 = load i32, i32* @d, align 4
18 %tobool72 = icmp eq i32 %0, 0
19 br i1 %tobool72, label %for.end32, label %for.cond1.preheader.lr.ph
21 for.cond1.preheader.lr.ph: ; preds = %entry
22 %1 = load i32, i32* @c, align 4
23 %tobool2 = icmp eq i32 %1, 0
24 %2 = load i32, i32* @b, align 4
25 %cmp = icmp sgt i32 %2, 0
26 %conv = zext i1 %cmp to i32
27 %3 = load i32, i32* @g, align 4
28 %tobool4 = icmp eq i32 %3, 0
29 %4 = load i16, i16* @a, align 2
30 %tobool9 = icmp eq i16 %4, 0
31 br label %for.cond1.preheader
33 for.cond1.preheader: ; preds = %for.cond25.loopexit.us-lcssa.us-lcssa, %if.end.us50, %if.end.us, %if.end.us.us, %for.cond1.preheader.lr.ph
34 %j.073 = phi i32 [ undef, %for.cond1.preheader.lr.ph ], [ %j.1.us.us, %if.end.us.us ], [ %j.1.us, %if.end.us ], [ %j.073, %for.cond25.loopexit.us-lcssa.us-lcssa ], [ %j.1.us36, %if.end.us50 ]
35 br i1 %tobool2, label %for.cond1.preheader.split.us, label %for.cond1.preheader.for.cond1.preheader.split_crit_edge
37 for.cond1.preheader.for.cond1.preheader.split_crit_edge: ; preds = %for.cond1.preheader
38 br i1 %tobool9, label %if.end.us50, label %for.cond1.preheader.split.for.cond1.preheader.split.split_crit_edge
40 for.cond1.preheader.split.us: ; preds = %for.cond1.preheader
41 br i1 %tobool9, label %cond.end.us.us, label %cond.end.us
43 cond.false18.us.us: ; preds = %if.end.us.us
44 %5 = load i32, i32* @f, align 4
45 %sext76 = shl i32 %5, 16
46 %phitmp75 = ashr exact i32 %sext76, 16
47 br label %cond.end.us.us
49 if.end.us.us: ; preds = %cond.end.us.us, %if.then.us.us
50 br i1 %tobool4, label %cond.false18.us.us, label %for.cond1.preheader
52 if.then.us.us: ; preds = %cond.end.us.us
53 store i32 0, i32* @f, align 4
54 br label %if.end.us.us
56 cond.end.us.us: ; preds = %cond.false18.us.us, %for.cond1.preheader.split.us
57 %j.1.us.us = phi i32 [ %j.073, %for.cond1.preheader.split.us ], [ %phitmp75, %cond.false18.us.us ]
58 store i32 %conv, i32* @h, align 4
59 br i1 %cmp, label %if.then.us.us, label %if.end.us.us
61 cond.end21.us: ; preds = %land.lhs.true12.us, %cond.false18.us
62 %cond22.us = phi i16 [ %add.us, %cond.false18.us ], [ %4, %land.lhs.true12.us ]
63 %conv24.us = sext i16 %cond22.us to i32
66 cond.false18.us: ; preds = %if.end6.us, %land.lhs.true12.us
67 %add.us = add i16 %4, %conv7.us
68 br label %cond.end21.us
70 land.lhs.true12.us: ; preds = %if.end6.us
71 %conv10.us = sext i16 %conv7.us to i32
72 %sub.us = sub nsw i32 0, %conv10.us
73 %cmp14.us = icmp slt i32 %sub.us, 1
74 br i1 %cmp14.us, label %cond.end21.us, label %cond.false18.us
76 if.end6.us: ; preds = %if.end.us
77 %6 = load i32, i32* @f, align 4
78 %conv7.us = trunc i32 %6 to i16
79 %tobool11.us = icmp eq i16 %conv7.us, 0
80 br i1 %tobool11.us, label %cond.false18.us, label %land.lhs.true12.us
82 if.end.us: ; preds = %cond.end.us, %if.then.us
83 br i1 %tobool4, label %if.end6.us, label %for.cond1.preheader
85 if.then.us: ; preds = %cond.end.us
86 store i32 0, i32* @f, align 4
89 cond.end.us: ; preds = %cond.end21.us, %for.cond1.preheader.split.us
90 %j.1.us = phi i32 [ %conv24.us, %cond.end21.us ], [ %j.073, %for.cond1.preheader.split.us ]
91 store i32 %conv, i32* @h, align 4
92 br i1 %cmp, label %if.then.us, label %if.end.us
94 for.cond1.preheader.split.for.cond1.preheader.split.split_crit_edge: ; preds = %for.cond1.preheader.for.cond1.preheader.split_crit_edge
95 br i1 %tobool4, label %if.end6.us65, label %for.cond25.loopexit.us-lcssa.us-lcssa
97 cond.false18.us40: ; preds = %if.end.us50
98 %7 = load i32, i32* @f, align 4
99 %sext = shl i32 %7, 16
100 %phitmp = ashr exact i32 %sext, 16
101 br label %if.end.us50
103 if.end.us50: ; preds = %cond.false18.us40, %for.cond1.preheader.for.cond1.preheader.split_crit_edge
104 %j.1.us36 = phi i32 [ %j.073, %for.cond1.preheader.for.cond1.preheader.split_crit_edge ], [ %phitmp, %cond.false18.us40 ]
105 store i32 0, i32* @h, align 4
106 br i1 %tobool4, label %cond.false18.us40, label %for.cond1.preheader
108 if.end6.us65: ; preds = %if.end6.us65, %for.cond1.preheader.split.for.cond1.preheader.split.split_crit_edge
109 store i32 0, i32* @h, align 4
110 br label %if.end6.us65
112 for.cond25.loopexit.us-lcssa.us-lcssa: ; preds = %for.cond1.preheader.split.for.cond1.preheader.split.split_crit_edge
113 store i32 0, i32* @h, align 4
114 br label %for.cond1.preheader
116 for.end32: ; preds = %entry