-O+

Controls optimization settings.

  -O+keyword [,...]

  

The keyword arguments are:

0

Equivalent to -opt off.

1

Equivalent to -opt level=1.

2

Equivalent to -opt level=2.

3

Equivalent to -opt level=3.

4

Equivalent to -opt level=4,intrinsics.

p

Equivalent to -opt speed.

s

Equivalent to -opt space.

Options can be combined into a single command. Command is case-sensitive.