1 ; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s 2 3 ; ScalarEvolution should be able to compute a loop exit value for %indvar.i8. 4 5 ; CHECK: sext{{.*}}trunc{{.*}}Exits: 11 6 7 define void @another_count_down_signed(double* %d, i64 %n) nounwind { 8 entry: 9 br label %loop 10 11 loop: ; preds = %loop, %entry 12 %indvar = phi i64 [ %n, %entry ], [ %indvar.next, %loop ] ; <i64> [#uses=4] 13 %s0 = shl i64 %indvar, 8 ; <i64> [#uses=1] 14 %indvar.i8 = ashr i64 %s0, 8 ; <i64> [#uses=1] 15 %t0 = getelementptr double* %d, i64 %indvar.i8 ; <double*> [#uses=2] 16 %t1 = load double* %t0 ; <double> [#uses=1] 17 %t2 = fmul double %t1, 1.000000e-01 ; <double> [#uses=1] 18 store double %t2, double* %t0 19 %indvar.next = sub i64 %indvar, 1 ; <i64> [#uses=2] 20 %exitcond = icmp eq i64 %indvar.next, 10 ; <i1> [#uses=1] 21 br i1 %exitcond, label %return, label %loop 22 23 return: ; preds = %loop 24 ret void 25 } 26
