set Struct Reference

Collaboration diagram for set:

Data Fields
rtx	rtl
rtx	src
struct table_elt *	src_elt
unsigned	src_hash
unsigned	dest_hash
rtx	inner_dest
char	src_in_memory
char	src_volatile

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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.   

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Field Documentation

unsigned set::dest_hash

Referenced by cse_insn().

rtx set::inner_dest

Referenced by cse_insn().

rtx set::rtl

Referenced by canonicalize_insn(), cse_insn(), and find_sets_in_insn().

rtx set::src

Referenced by bypass_block(), canonicalize_insn(), and cse_insn().

struct table_elt* set::src_elt

Referenced by cse_insn().

unsigned set::src_hash

Referenced by cse_insn().

char set::src_in_memory

Referenced by cse_insn().

char set::src_volatile

Referenced by cse_insn().

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

• cse.c