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