diff options
Diffstat (limited to 'gcc/config/arm/arm.c')
| -rw-r--r-- | gcc/config/arm/arm.c | 66 |
1 files changed, 43 insertions, 23 deletions
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index cadbe65..3d99144 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -3535,32 +3535,52 @@ arm_rtx_costs (rtx x, int code, int outer_code, int *total) the same for practically all of them. So we weight the different types of address here in the order (most pref first): PRE/POST_INC/DEC, SHIFT or NON-INT sum, INT sum, REG, MEM or LABEL. */ +static inline int +arm_arm_address_cost (rtx x) +{ + enum rtx_code c = GET_CODE (x); + + if (c == PRE_INC || c == PRE_DEC || c == POST_INC || c == POST_DEC) + return 0; + if (c == MEM || c == LABEL_REF || c == SYMBOL_REF) + return 10; + + if (c == PLUS || c == MINUS) + { + char cl0 = GET_RTX_CLASS (GET_CODE (XEXP (x, 0))); + char cl1 = GET_RTX_CLASS (GET_CODE (XEXP (x, 1))); + + if (GET_CODE (XEXP (x, 0)) == CONST_INT) + return 2; + + if (cl0 == '2' || cl0 == 'c' || cl1 == '2' || cl1 == 'c') + return 3; + + return 4; + } + + return 6; +} + +static inline int +arm_thumb_address_cost (rtx x) +{ + enum rtx_code c = GET_CODE (x); + + if (c == REG) + return 1; + if (c == PLUS + && GET_CODE (XEXP (x, 0)) == REG + && GET_CODE (XEXP (x, 1)) == CONST_INT) + return 1; + + return 2; +} + static int arm_address_cost (rtx x) { -#define ARM_ADDRESS_COST(X) \ - (10 - ((GET_CODE (X) == MEM || GET_CODE (X) == LABEL_REF \ - || GET_CODE (X) == SYMBOL_REF) \ - ? 0 \ - : ((GET_CODE (X) == PRE_INC || GET_CODE (X) == PRE_DEC \ - || GET_CODE (X) == POST_INC || GET_CODE (X) == POST_DEC) \ - ? 10 \ - : (((GET_CODE (X) == PLUS || GET_CODE (X) == MINUS) \ - ? 6 + (GET_CODE (XEXP (X, 1)) == CONST_INT ? 2 \ - : ((GET_RTX_CLASS (GET_CODE (XEXP (X, 0))) == '2' \ - || GET_RTX_CLASS (GET_CODE (XEXP (X, 0))) == 'c' \ - || GET_RTX_CLASS (GET_CODE (XEXP (X, 1))) == '2' \ - || GET_RTX_CLASS (GET_CODE (XEXP (X, 1))) == 'c') \ - ? 1 : 0)) \ - : 4))))) - -#define THUMB_ADDRESS_COST(X) \ - ((GET_CODE (X) == REG \ - || (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == REG \ - && GET_CODE (XEXP (X, 1)) == CONST_INT)) \ - ? 1 : 2) - - return (TARGET_ARM ? ARM_ADDRESS_COST (x) : THUMB_ADDRESS_COST (x)); + return TARGET_ARM ? arm_arm_address_cost (x) : arm_thumb_address_cost (x); } static int |