diff options
Diffstat (limited to 'gcc/cfgloop.h')
| -rw-r--r-- | gcc/cfgloop.h | 40 |
1 files changed, 35 insertions, 5 deletions
diff --git a/gcc/cfgloop.h b/gcc/cfgloop.h index 3821ee66c79..535e256050d 100644 --- a/gcc/cfgloop.h +++ b/gcc/cfgloop.h @@ -625,15 +625,45 @@ fel_init (loop_iterator *li, loop_p *loop, unsigned flags) } /* The properties of the target. */ +struct target_cfgloop { + /* Number of available registers. */ + unsigned x_target_avail_regs; -extern unsigned target_avail_regs; -extern unsigned target_res_regs; -extern unsigned target_reg_cost [2]; -extern unsigned target_spill_cost [2]; + /* Number of available registers that are call-clobbered. */ + unsigned x_target_clobbered_regs; + + /* Number of registers reserved for temporary expressions. */ + unsigned x_target_res_regs; + + /* The cost for register when there still is some reserve, but we are + approaching the number of available registers. */ + unsigned x_target_reg_cost[2]; + + /* The cost for register when we need to spill. */ + unsigned x_target_spill_cost[2]; +}; + +extern struct target_cfgloop default_target_cfgloop; +#if SWITCHABLE_TARGET +extern struct target_cfgloop *this_target_cfgloop; +#else +#define this_target_cfgloop (&default_target_cfgloop) +#endif + +#define target_avail_regs \ + (this_target_cfgloop->x_target_avail_regs) +#define target_clobbered_regs \ + (this_target_cfgloop->x_target_clobbered_regs) +#define target_res_regs \ + (this_target_cfgloop->x_target_res_regs) +#define target_reg_cost \ + (this_target_cfgloop->x_target_reg_cost) +#define target_spill_cost \ + (this_target_cfgloop->x_target_spill_cost) /* Register pressure estimation for induction variable optimizations & loop invariant motion. */ -extern unsigned estimate_reg_pressure_cost (unsigned, unsigned, bool); +extern unsigned estimate_reg_pressure_cost (unsigned, unsigned, bool, bool); extern void init_set_costs (void); /* Loop optimizer initialization. */ |