diff options
Diffstat (limited to 'gcc/ira.c')
| -rw-r--r-- | gcc/ira.c | 19 |
1 files changed, 9 insertions, 10 deletions
@@ -2380,11 +2380,10 @@ compute_regs_asm_clobbered (void) } -/* Set up ELIMINABLE_REGSET, IRA_NO_ALLOC_REGS, and REGS_EVER_LIVE. - If the function is called from IRA (not from the insn scheduler or - RTL loop invariant motion), FROM_IRA_P is true. */ +/* Set up ELIMINABLE_REGSET, IRA_NO_ALLOC_REGS, and + REGS_EVER_LIVE. */ void -ira_setup_eliminable_regset (bool from_ira_p) +ira_setup_eliminable_regset (void) { #ifdef ELIMINABLE_REGS int i; @@ -2401,16 +2400,16 @@ ira_setup_eliminable_regset (bool from_ira_p) if the stack pointer is moving. */ || (flag_stack_check && STACK_CHECK_MOVING_SP) || crtl->accesses_prior_frames - || crtl->stack_realign_needed + || (SUPPORTS_STACK_ALIGNMENT && crtl->stack_realign_needed) /* We need a frame pointer for all Cilk Plus functions that use Cilk keywords. */ || (flag_enable_cilkplus && cfun->is_cilk_function) || targetm.frame_pointer_required ()); - if (from_ira_p && ira_use_lra_p) - /* It can change FRAME_POINTER_NEEDED. We call it only from IRA - because it is expensive. */ - lra_init_elimination (); + /* The chance that FRAME_POINTER_NEEDED is changed from inspecting + RTL is very small. So if we use frame pointer for RA and RTL + actually prevents this, we will spill pseudos assigned to the + frame pointer in LRA. */ if (frame_pointer_needed) df_set_regs_ever_live (HARD_FRAME_POINTER_REGNUM, true); @@ -5291,7 +5290,7 @@ ira (FILE *f) find_moveable_pseudos (); max_regno_before_ira = max_reg_num (); - ira_setup_eliminable_regset (true); + ira_setup_eliminable_regset (); ira_overall_cost = ira_reg_cost = ira_mem_cost = 0; ira_load_cost = ira_store_cost = ira_shuffle_cost = 0; |