GIMPLE_PHI (GNU Compiler Collection (GCC) Internals)

#### 12.8.25 `GIMPLE_PHI` ¶

GIMPLE function: `unsigned` gimple_phi_capacity `(gimple g)` ¶

  Return the maximum number of arguments supported by `GIMPLE_PHI` `G`.

GIMPLE function: `unsigned` gimple_phi_num_args `(gimple g)` ¶

  Return the number of arguments in `GIMPLE_PHI` `G`. This must always be exactly the number of incoming edges for the basic block holding `G`.

GIMPLE function: `tree` gimple_phi_result `(gimple g)` ¶

  Return the `SSA` name created by `GIMPLE_PHI` `G`.

GIMPLE function: `tree *` gimple_phi_result_ptr `(gimple g)` ¶

  Return a pointer to the `SSA` name created by `GIMPLE_PHI` `G`.

GIMPLE function: `void` gimple_phi_set_result `(gphi *g, tree result)` ¶

  Set `RESULT` to be the `SSA` name created by `GIMPLE_PHI` `G`.

GIMPLE function: `struct phi_arg_d *` gimple_phi_arg `(gimple g, index)` ¶

  Return the `PHI` argument corresponding to incoming edge `INDEX` for `GIMPLE_PHI` `G`.

GIMPLE function: `void` gimple_phi_set_arg `(gphi *g, index, struct phi_arg_d * phiarg)` ¶

  Set `PHIARG` to be the argument corresponding to incoming edge `INDEX` for `GIMPLE_PHI` `G`.