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| author | Torbjorn Granlund <tege@gnu.org> | 1993-11-05 08:10:05 +0000 |
|---|---|---|
| committer | Torbjorn Granlund <tege@gnu.org> | 1993-11-05 08:10:05 +0000 |
| commit | 5d1954414ac0a11774cb866da630f79e28bdd132 (patch) | |
| tree | a1c38241c9de1820c1a1d40a8478512d0b24b373 /gcc | |
| parent | 12a3cb7a2e2ba95aa90b951ce2b69a1088f36808 (diff) | |
| download | gcc-5d1954414ac0a11774cb866da630f79e28bdd132.zip gcc-5d1954414ac0a11774cb866da630f79e28bdd132.tar.gz gcc-5d1954414ac0a11774cb866da630f79e28bdd132.tar.bz2 | |
(RTX_COST): Return actual costs for multiplication...
(RTX_COST): Return actual costs for multiplication, not costs for
theoretical special cases that are not handled in the md.
From-SVN: r6008
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/m68k/m68k.h | 16 |
1 files changed, 1 insertions, 15 deletions
diff --git a/gcc/config/m68k/m68k.h b/gcc/config/m68k/m68k.h index 4d2adef..b5e3375 100644 --- a/gcc/config/m68k/m68k.h +++ b/gcc/config/m68k/m68k.h @@ -1402,24 +1402,10 @@ __transfer_from_trampoline () \ return COSTS_N_INSNS (3); /* lsr #i,dn */ \ break; \ case MULT: \ - if (GET_CODE (XEXP (x, 1)) == CONST_INT \ - && exact_log2 (INTVAL (XEXP (x, 1))) >= 0) \ - { \ - /* A shift by a big integer takes an extra instruction. */ \ - if (GET_CODE (XEXP (X, 1)) == CONST_INT \ - && (INTVAL (XEXP (X, 1)) == (1 << 16))) \ - return COSTS_N_INSNS (2); /* clrw;swap */ \ - if (GET_CODE (XEXP (X, 1)) == CONST_INT \ - && !(INTVAL (XEXP (X, 1)) > 1 \ - && INTVAL (XEXP (X, 1)) <= 256)) \ - return COSTS_N_INSNS (3); /* lsr #i,dn */ \ - break; \ - } \ - else if (GET_MODE (X) == QImode || GET_MODE (X) == HImode) \ + if (GET_MODE (X) == QImode || GET_MODE (X) == HImode) \ return COSTS_N_INSNS (MULW_COST); \ else \ return COSTS_N_INSNS (MULL_COST); \ - break; \ case DIV: \ case UDIV: \ case MOD: \ |