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| author | Bernardo Innocenti <bernie@develer.com> | 2003-08-21 19:47:41 +0200 |
|---|---|---|
| committer | Bernardo Innocenti <bernie@gcc.gnu.org> | 2003-08-21 19:47:41 +0200 |
| commit | eb849993983949d4771579cf26ea563a2bb7c0de (patch) | |
| tree | bb34a17809ffbc384aaa943ac6299ff9578d1b01 /gcc | |
| parent | f3c2dfc6293ec19dd6cd7c975d77eee3420f4cef (diff) | |
| download | gcc-eb849993983949d4771579cf26ea563a2bb7c0de.zip gcc-eb849993983949d4771579cf26ea563a2bb7c0de.tar.gz gcc-eb849993983949d4771579cf26ea563a2bb7c0de.tar.bz2 | |
m68k.c (m68k_rtx_costs): Adjust mul/div costs for ColdFire cores.
* config/m68k/m68k.c (m68k_rtx_costs): Adjust mul/div costs for
ColdFire cores.
Co-Authored-By: Paul Dale <pauli@snapgear.com>
Co-Authored-By: Peter Barada <peter@baradas.org>
From-SVN: r70653
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/config/m68k/m68k.c | 19 |
2 files changed, 20 insertions, 6 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index db6b316..6c4e28d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2003-08-21 Bernardo Innocenti <bernie@develer.com> + Paul Dale <pauli@snapgear.com> + Peter Barada <peter@baradas.org> + + * config/m68k/m68k.c (m68k_rtx_costs): Adjust mul/div costs for + ColdFire cores. + 2003-08-21 Zack Weinberg <zack@codesourcery.com> * Makefile.in (INCLUDES): Remove -I$(srcdir)/config. diff --git a/gcc/config/m68k/m68k.c b/gcc/config/m68k/m68k.c index e304a65..9d142c5 100644 --- a/gcc/config/m68k/m68k.c +++ b/gcc/config/m68k/m68k.c @@ -1507,9 +1507,10 @@ m68k_rtx_costs (x, code, outer_code, total) for add and the time for shift, taking away a little more because sometimes move insns are needed. */ /* div?.w is relatively cheaper on 68000 counted in COSTS_N_INSNS terms. */ -#define MULL_COST (TARGET_68060 ? 2 : TARGET_68040 ? 5 : 13) -#define MULW_COST (TARGET_68060 ? 2 : TARGET_68040 ? 3 : TARGET_68020 ? 8 : 5) -#define DIVW_COST (TARGET_68020 ? 27 : 12) +#define MULL_COST (TARGET_68060 ? 2 : TARGET_68040 ? 5 : TARGET_CFV3 ? 3 : TARGET_COLDFIRE ? 10 : 13) +#define MULW_COST (TARGET_68060 ? 2 : TARGET_68040 ? 3 : TARGET_68020 ? 8 : \ + TARGET_CFV3 ? 2 : 5) +#define DIVW_COST (TARGET_68020 ? 27 : TARGET_CF_HWDIV ? 11 : 12) case PLUS: /* An lea costs about three times as much as a simple add. */ @@ -1521,7 +1522,11 @@ m68k_rtx_costs (x, code, outer_code, total) && (INTVAL (XEXP (XEXP (x, 0), 1)) == 2 || INTVAL (XEXP (XEXP (x, 0), 1)) == 4 || INTVAL (XEXP (XEXP (x, 0), 1)) == 8)) - *total = COSTS_N_INSNS (3); /* lea an@(dx:l:i),am */ + { + /* lea an@(dx:l:i),am */ + *total = COSTS_N_INSNS (TARGET_COLDFIRE ? 2 : 3); + return true; + } return false; case ASHIFT: @@ -1532,7 +1537,7 @@ m68k_rtx_costs (x, code, outer_code, total) *total = COSTS_N_INSNS(1); return true; } - if (! TARGET_68020) + if (! TARGET_68020 && ! TARGET_COLDFIRE) { if (GET_CODE (XEXP (x, 1)) == CONST_INT) { @@ -1557,7 +1562,7 @@ m68k_rtx_costs (x, code, outer_code, total) && !(INTVAL (XEXP (x, 1)) > 0 && INTVAL (XEXP (x, 1)) <= 8)) { - *total = COSTS_N_INSNS (3); /* lsr #i,dn */ + *total = COSTS_N_INSNS (TARGET_COLDFIRE ? 1 : 3); /* lsr #i,dn */ return true; } return false; @@ -1579,6 +1584,8 @@ m68k_rtx_costs (x, code, outer_code, total) case UMOD: if (GET_MODE (x) == QImode || GET_MODE (x) == HImode) *total = COSTS_N_INSNS (DIVW_COST); /* div.w */ + else if (TARGET_CF_HWDIV) + *total = COSTS_N_INSNS (18); else *total = COSTS_N_INSNS (43); /* div.l */ return true; |