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| author | Jan Hubicka <jh@suse.cz> | 2008-01-16 17:32:05 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2008-01-16 16:32:05 +0000 |
| commit | a03c6d64f468ff2aaebcf2a87bb589938264bc38 (patch) | |
| tree | e7a65553b87a99438635f0d5abcf71b9c8210b5c /gcc/local-alloc.c | |
| parent | 58c0b6524407250f48bb9c616943bf05a1ee6478 (diff) | |
| download | gcc-a03c6d64f468ff2aaebcf2a87bb589938264bc38.zip gcc-a03c6d64f468ff2aaebcf2a87bb589938264bc38.tar.gz gcc-a03c6d64f468ff2aaebcf2a87bb589938264bc38.tar.bz2 | |
re PR rtl-optimization/31396 (Inline code performance much worse than out-of-line)
PR rtl-optimization/31396
* regstat.c (regstat_bb_compute_ri): Compute FREQ_CALLS_CROSSED.
* cfg.c (dump_reg_info): Print it.
* regs.h (struct reg_info_t): add freq_calls_crossed.
(REG_FREQ_CALLS_CROSSED): New macro.
* global.c (global_alloc): Compute freq_calls_crossed for allocno.
(find_reg): Update call of CALLER_SAVE_PROFITABLE.
* regmove.c (optimize_reg_copy_1, optimize_reg_copy_2, fixup_match_2,
regmove_optimize): Update call crossed frequencies.
* local-alloc.c (struct qty): Add freq_calls_crossed.
(alloc_qty): Copute freq_calls_crossed.
(update_equiv_regs, combine_regs): Update REG_FREQ_CALLS_CROSSED.
(find_free_reg): Update call of CALLER_SAVE_PROFITABLE.
* ra.h (struct allocno): Add freq_calls_crossed.
From-SVN: r131576
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) |