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