1; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
2; RUN: opt < %s -analyze -enable-new-pm=0 -scalar-evolution -scalar-evolution-classify-expressions=0 | FileCheck %s
3; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" -scalar-evolution-classify-expressions=0 2>&1 | FileCheck %s
4
5; ScalarEvolution should be able to compute a loop exit value for %indvar.i8.
6
7define void @another_count_down_signed(double* %d, i64 %n) nounwind {
8; CHECK-LABEL: 'another_count_down_signed'
9; CHECK-NEXT:  Determining loop execution counts for: @another_count_down_signed
10; CHECK-NEXT:  Loop %loop: backedge-taken count is (-11 + %n)
11; CHECK-NEXT:  Loop %loop: max backedge-taken count is -1
12; CHECK-NEXT:  Loop %loop: Predicated backedge-taken count is (-11 + %n)
13; CHECK-NEXT:   Predicates:
14; CHECK:       Loop %loop: Trip multiple is 1
15;
16entry:
17  br label %loop
18
19loop:		; preds = %loop, %entry
20  %indvar = phi i64 [ %n, %entry ], [ %indvar.next, %loop ]		; <i64> [#uses=4]
21  %s0 = shl i64 %indvar, 8		; <i64> [#uses=1]
22  %indvar.i8 = ashr i64 %s0, 8		; <i64> [#uses=1]
23  %t0 = getelementptr double, double* %d, i64 %indvar.i8		; <double*> [#uses=2]
24  %t1 = load double, double* %t0		; <double> [#uses=1]
25  %t2 = fmul double %t1, 1.000000e-01		; <double> [#uses=1]
26  store double %t2, double* %t0
27  %indvar.next = sub i64 %indvar, 1		; <i64> [#uses=2]
28  %exitcond = icmp eq i64 %indvar.next, 10		; <i1> [#uses=1]
29  br i1 %exitcond, label %return, label %loop
30
31return:		; preds = %loop
32  ret void
33}
34