1 ; RUN: opt -loop-reduce -S < %s | FileCheck %s
4 target datalayout = "e-i64:64-f80:128-s:64-n8:16:32:64-S128"
5 target triple = "x86_64-unknown-linux-gnu"
7 @a = global i32 0, align 4
8 @b = common global i32 0, align 4
9 @e = common global i8 0, align 1
10 @d = common global i32 0, align 4
11 @c = common global i32 0, align 4
12 @.str = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
14 ; Function Attrs: nounwind optsize uwtable
18 %.pr = load i32, i32* @b, align 4
19 %cmp10 = icmp slt i32 %.pr, 1
20 br i1 %cmp10, label %for.cond1.preheader.lr.ph, label %entry.for.end9_crit_edge
22 entry.for.end9_crit_edge: ; preds = %entry
23 %.pre = load i32, i32* @c, align 4
26 for.cond1.preheader.lr.ph: ; preds = %entry
27 %0 = load i32, i32* @a, align 4
28 %tobool = icmp eq i32 %0, 0
29 br i1 %tobool, label %for.cond1.preheader.for.cond1.preheader.split_crit_edge, label %return.loopexit.split
31 for.cond1.preheader.for.cond1.preheader.split_crit_edge: ; preds = %for.cond1.preheader.lr.ph, %for.inc8
32 %1 = phi i32 [ %inc, %for.inc8 ], [ %.pr, %for.cond1.preheader.lr.ph ]
36 if.end: ; preds = %if.end, %for.cond1.preheader.for.cond1.preheader.split_crit_edge
38 ; CHECK: %lsr.iv = phi i32 [ %lsr.iv.next, %if.end ], [ 258, %for.cond1.preheader.for.cond1.preheader.split_crit_edge ]
39 %indvars.iv = phi i32 [ 1, %for.cond1.preheader.for.cond1.preheader.split_crit_edge ], [ %indvars.iv.next, %if.end ]
41 %2 = phi i8 [ 1, %for.cond1.preheader.for.cond1.preheader.split_crit_edge ], [ %dec, %if.end ]
42 %conv7 = mul i32 %indvars.iv, 258
43 %shl = and i32 %conv7, 510
44 store i32 %shl, i32* @c, align 4
46 ; CHECK: %lsr.iv.next = add nsw i32 %lsr.iv, -258
49 %cmp2 = icmp sgt i8 %dec, -1
50 %indvars.iv.next = add i32 %indvars.iv, -1
51 br i1 %cmp2, label %if.end, label %for.inc8
53 for.inc8: ; preds = %if.end
54 store i32 0, i32* @d, align 4
55 %inc = add nsw i32 %1, 1
56 store i32 %inc, i32* @b, align 4
57 %cmp = icmp slt i32 %1, 0
58 br i1 %cmp, label %for.cond1.preheader.for.cond1.preheader.split_crit_edge, label %for.cond.for.end9_crit_edge
60 for.cond.for.end9_crit_edge: ; preds = %for.inc8
61 store i8 %dec, i8* @e, align 1
64 for.end9: ; preds = %entry.for.end9_crit_edge, %for.cond.for.end9_crit_edge
65 %3 = phi i32 [ %.pre, %entry.for.end9_crit_edge ], [ %shl, %for.cond.for.end9_crit_edge ]
66 %call = tail call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %3) #2
69 return.loopexit.split: ; preds = %for.cond1.preheader.lr.ph
70 store i8 1, i8* @e, align 1
71 store i32 0, i32* @d, align 4
74 return: ; preds = %return.loopexit.split, %for.end9
75 %retval.0 = phi i32 [ 0, %for.end9 ], [ 1, %return.loopexit.split ]
79 ; Function Attrs: nounwind optsize
80 declare i32 @printf(i8* nocapture readonly, ...)