ls_expr Struct Reference

Collaboration diagram for ls_expr:

Data Fields
struct gcse_expr *	expr
rtx	pattern
rtx	pattern_regs
vec< rtx_insn * >	stores
struct ls_expr *	next
int	invalid
int	index
unsigned int	hash_index
rtx	reaching_reg

Detailed Description

This is a list of expressions which are MEMs and will be used by load
or store motion.
Load motion tracks MEMs which aren't killed by anything except itself,
i.e. loads and stores to a single location.
We can then allow movement of these MEM refs with a little special
allowance. (all stores copy the same value to the reaching reg used
for the loads).  This means all values used to store into memory must have
no side effects so we can re-issue the setter value.   

Field Documentation

expr

struct gcse_expr* ls_expr::expr

Referenced by ldst_entry(), and trim_ld_motion_mems().

hash_index

unsigned int ls_expr::hash_index

Referenced by ldst_entry(), and trim_ld_motion_mems().

index

int ls_expr::index

Referenced by ldst_entry(), and print_ldst_list().

invalid

int ls_expr::invalid

Referenced by compute_ld_motion_mems(), invalidate_any_buried_refs(), ldst_entry(), and trim_ld_motion_mems().

next

struct ls_expr* ls_expr::next

Referenced by free_ld_motion_mems(), ldst_entry(), print_ldst_list(), and trim_ld_motion_mems().

pattern

rtx ls_expr::pattern

Referenced by find_rtx_in_ldst(), pre_ldst_expr_hasher::hash(), ldst_entry(), print_ldst_list(), and trim_ld_motion_mems().

pattern_regs

rtx ls_expr::pattern_regs

Referenced by ldst_entry().

reaching_reg

rtx ls_expr::reaching_reg

Referenced by ldst_entry().

stores

vec<rtx_insn *> ls_expr::stores

Referenced by compute_ld_motion_mems(), free_ldst_entry(), ldst_entry(), and print_ldst_list().

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

• gcse.cc