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