RS/6000 and PowerPC Parameters (GNU Compiler Collection (GCC) Internals)

#### 30.2.5 RS/6000 and PowerPC Parameters ¶

The following parameters are available on RS/6000 and PowerPC targets:

`rs6000-vect-unroll-limit` ¶

  The vectorizer checks with target information to determine whether it would be beneficial to unroll the main vectorized loop and by how much. This parameter sets the upper bound of how much the vectorizer unrolls the main loop. The default value is four.