GCC Middle and Back End API Reference
Data Fields
range_entry Struct Reference

Data Fields

tree exp
tree low
tree high
bool in_p
bool strict_overflow_p
unsigned int idx
unsigned int next

Detailed Description

The following functions are subroutines to optimize_range_tests and allow it to try to change a logical combination of comparisons into a range test.

For example, both X == 2 || X == 5 || X == 3 || X == 4 and X >= 2 && X <= 5 are converted to (unsigned) (X - 2) <= 3

For more information see comments above fold_test_range in fold-const.c, this implementation is for GIMPLE.

Field Documentation

tree range_entry::exp

Referenced by optimize_ops_list(), and update_range_test().

tree range_entry::high

Referenced by optimize_ops_list(), and optimize_range_tests_diff().

unsigned int range_entry::idx

Referenced by optimize_ops_list(), and optimize_range_tests_diff().

bool range_entry::in_p

Referenced by optimize_ops_list(), optimize_range_tests_diff(), and update_range_test().

tree range_entry::low

Referenced by optimize_ops_list(), and optimize_range_tests_diff().

unsigned int range_entry::next

Referenced by optimize_ops_list().

bool range_entry::strict_overflow_p

Referenced by optimize_ops_list(), optimize_range_tests_diff(), and update_range_test().

The documentation for this struct was generated from the following file: