diff options
Diffstat (limited to 'gcc/local-alloc.c')
| -rw-r--r-- | gcc/local-alloc.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/gcc/local-alloc.c b/gcc/local-alloc.c index 4ef1f02..9569a36 100644 --- a/gcc/local-alloc.c +++ b/gcc/local-alloc.c @@ -126,6 +126,10 @@ struct qty int n_calls_crossed; + /* Number of times a reg tied to given qty lives across a CALL_INSN. */ + + int freq_calls_crossed; + /* Number of times a reg tied to given qty lives across a CALL_INSN that might throw. */ @@ -332,6 +336,7 @@ alloc_qty (int regno, enum machine_mode mode, int size, int birth) qty[qtyno].mode = mode; qty[qtyno].birth = birth; qty[qtyno].n_calls_crossed = REG_N_CALLS_CROSSED (regno); + qty[qtyno].freq_calls_crossed = REG_FREQ_CALLS_CROSSED (regno); qty[qtyno].n_throwing_calls_crossed = REG_N_THROWING_CALLS_CROSSED (regno); qty[qtyno].min_class = reg_preferred_class (regno); qty[qtyno].alternate_class = reg_alternate_class (regno); @@ -1193,6 +1198,7 @@ update_equiv_regs (void) REG_BASIC_BLOCK (regno) = bb->index; REG_N_CALLS_CROSSED (regno) = 0; + REG_FREQ_CALLS_CROSSED (regno) = 0; REG_N_THROWING_CALLS_CROSSED (regno) = 0; REG_LIVE_LENGTH (regno) = 2; @@ -2026,6 +2032,7 @@ combine_regs (rtx usedreg, rtx setreg, int may_save_copy, int insn_number, /* Update info about quantity SQTY. */ qty[sqty].n_calls_crossed += REG_N_CALLS_CROSSED (sreg); + qty[sqty].freq_calls_crossed += REG_FREQ_CALLS_CROSSED (sreg); qty[sqty].n_throwing_calls_crossed += REG_N_THROWING_CALLS_CROSSED (sreg); qty[sqty].n_refs += REG_N_REFS (sreg); @@ -2338,8 +2345,9 @@ find_free_reg (enum reg_class class, enum machine_mode mode, int qtyno, && ! just_try_suggested && qty[qtyno].n_calls_crossed != 0 && qty[qtyno].n_throwing_calls_crossed == 0 - && CALLER_SAVE_PROFITABLE (qty[qtyno].n_refs, - qty[qtyno].n_calls_crossed)) + && CALLER_SAVE_PROFITABLE (optimize_size ? qty[qtyno].n_refs : qty[qtyno].freq, + optimize_size ? qty[qtyno].n_calls_crossed + : qty[qtyno].freq_calls_crossed)) { i = find_free_reg (class, mode, qtyno, 1, 0, born_index, dead_index); if (i >= 0) |