tree_switch_conversion::case_bit_test Class Reference

#include <tree-switch-conversion.h>

Collaboration diagram for tree_switch_conversion::case_bit_test:

Static Public Member Functions
static int	cmp (const void *p1, const void *p2)

Data Fields
wide_int	mask
basic_block	target_bb
tree	label
int	bits
profile_probability	prob

Detailed Description

A case_bit_test represents a set of case nodes that may be
selected from using a bit-wise comparison.  HI and LO hold
the integer to be tested against, TARGET_EDGE contains the
edge to the basic block to jump to upon success and BITS
counts the number of case nodes handled by this test,
typically the number of bits set in HI:LO.  The LABEL field
is used to quickly identify all cases in this set without
looking at label_to_block for every case label.   

Member Function Documentation

cmp()

int case_bit_test::cmp ( const void * p1, const void * p2 )

static

Comparison function for qsort to order bit tests by decreasing
probability of execution.   

References bits, CASE_LABEL, d1, d2, and LABEL_DECL_UID.

Referenced by tree_switch_conversion::bit_test_cluster::emit().

Field Documentation

bits

int tree_switch_conversion::case_bit_test::bits

Referenced by cmp(), and tree_switch_conversion::bit_test_cluster::emit().

label

tree tree_switch_conversion::case_bit_test::label

Referenced by tree_switch_conversion::bit_test_cluster::emit().

mask

wide_int tree_switch_conversion::case_bit_test::mask

Referenced by tree_switch_conversion::bit_test_cluster::emit().

prob

profile_probability tree_switch_conversion::case_bit_test::prob

Referenced by tree_switch_conversion::bit_test_cluster::emit().

target_bb

basic_block tree_switch_conversion::case_bit_test::target_bb

Referenced by tree_switch_conversion::bit_test_cluster::emit().

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The documentation for this class was generated from the following files:

• tree-switch-conversion.h
• tree-switch-conversion.cc