1 ; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
2 ; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" -scalar-evolution-classify-expressions=0 2>&1 | FileCheck %s
5 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"
7 define i32 @foo(i32 %ecx) nounwind {
9 ; CHECK-NEXT: Determining loop execution counts for: @foo
10 ; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + %ecx)
11 ; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is i32 -2
12 ; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + %ecx)
13 ; CHECK-NEXT: Loop %for.body: Trip multiple is 1
16 %cmp2 = icmp eq i32 %ecx, 0 ; <i1> [#uses=1]
17 br i1 %cmp2, label %for.end, label %bb.nph
19 for.cond: ; preds = %for.inc
20 %cmp = icmp ult i32 %inc, %ecx ; <i1> [#uses=1]
21 br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge
23 for.cond.for.end_crit_edge: ; preds = %for.cond
24 %phitmp = add i32 %i.01, 2 ; <i32> [#uses=1]
27 bb.nph: ; preds = %entry
30 for.body: ; preds = %bb.nph, %for.cond
31 %i.01 = phi i32 [ %inc, %for.cond ], [ 0, %bb.nph ] ; <i32> [#uses=3]
32 %call = call i32 @bar(i32 %i.01) nounwind ; <i32> [#uses=0]
35 for.inc: ; preds = %for.body
36 %inc = add i32 %i.01, 1 ; <i32> [#uses=2]
39 for.end: ; preds = %for.cond.for.end_crit_edge, %entry
40 %i.0.lcssa = phi i32 [ %phitmp, %for.cond.for.end_crit_edge ], [ 1, %entry ] ; <i32> [#uses=1]