1 ; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
4 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"
6 ; CHECK: Loop %for.body: backedge-taken count is (-1 + {{%?}}ecx)
8 define i32 @foo(i32 %ecx) nounwind {
10 %cmp2 = icmp eq i32 %ecx, 0 ; <i1> [#uses=1]
11 br i1 %cmp2, label %for.end, label %bb.nph
13 for.cond: ; preds = %for.inc
14 %cmp = icmp ult i32 %inc, %ecx ; <i1> [#uses=1]
15 br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge
17 for.cond.for.end_crit_edge: ; preds = %for.cond
18 %phitmp = add i32 %i.01, 2 ; <i32> [#uses=1]
21 bb.nph: ; preds = %entry
24 for.body: ; preds = %bb.nph, %for.cond
25 %i.01 = phi i32 [ %inc, %for.cond ], [ 0, %bb.nph ] ; <i32> [#uses=3]
26 %call = call i32 @bar(i32 %i.01) nounwind ; <i32> [#uses=0]
29 for.inc: ; preds = %for.body
30 %inc = add i32 %i.01, 1 ; <i32> [#uses=2]
33 for.end: ; preds = %for.cond.for.end_crit_edge, %entry
34 %i.0.lcssa = phi i32 [ %phitmp, %for.cond.for.end_crit_edge ], [ 1, %entry ] ; <i32> [#uses=1]