Collaboration diagram for set:

Data Fields
rtx	rtl

rtx	src

struct table_elt *	src_elt

unsigned	src_hash

unsigned	dest_hash

rtx	inner_dest

enum machine_mode	mode: MACHINE_MODE_BITSIZE

unsigned int	src_in_memory: 1

unsigned int	src_volatile: 1

unsigned int	is_fake_set: 1

unsigned	src_const_hash

rtx	src_const

struct table_elt *	src_const_elt

struct table_elt *	dest_addr_elt

Detailed Description

CSE processing for one instruction.

Most "true" common subexpressions are mostly optimized away in GIMPLE,
but the few that "leak through" are cleaned up by cse_insn, and complex
addressing modes are often formed here.

The main function is cse_insn, and between here and that function
a couple of helper functions is defined to keep the size of cse_insn
within reasonable proportions.

Data is shared between the main and helper functions via STRUCT SET,
that contains all data related for every set in the instruction that
is being processed.

Note that cse_main processes all sets in the instruction.  Most
passes in GCC only process simple SET insns or single_set insns, but
CSE processes insns with multiple sets as well.

Data on one SET contained in the instruction.

Field Documentation

◆ dest_addr_elt

struct table_elt* set::dest_addr_elt

◆ dest_hash

unsigned set::dest_hash

◆ inner_dest

rtx set::inner_dest

◆ is_fake_set

unsigned int set::is_fake_set

Referenced by add_to_set().

◆ mode

enum machine_mode set::mode

◆ rtl

rtx set::rtl

Referenced by add_to_set(), and canonicalize_insn().

◆ src

rtx set::src

Referenced by bypass_block(), canonicalize_insn(), cprop_insn(), find_avail_set(), find_bypass_set(), and find_sets_in_insn().

◆ src_const

rtx set::src_const

◆ src_const_elt

struct table_elt* set::src_const_elt

◆ src_const_hash

unsigned set::src_const_hash

◆ src_elt

struct table_elt* set::src_elt

◆ src_hash

unsigned set::src_hash

◆ src_in_memory

unsigned int set::src_in_memory

◆ src_volatile

unsigned int set::src_volatile

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

cse.cc

Data Fields