diff options
Diffstat (limited to 'gcc/config/stormy16/stormy16.c')
| -rw-r--r-- | gcc/config/stormy16/stormy16.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/gcc/config/stormy16/stormy16.c b/gcc/config/stormy16/stormy16.c index 4d98ea7bf85..7a034626dd9 100644 --- a/gcc/config/stormy16/stormy16.c +++ b/gcc/config/stormy16/stormy16.c @@ -57,6 +57,7 @@ static void xstormy16_asm_output_mi_thunk PARAMS ((FILE *, tree, HOST_WIDE_INT, static void xstormy16_init_builtins PARAMS ((void)); static rtx xstormy16_expand_builtin PARAMS ((tree, rtx, rtx, enum machine_mode, int)); +static bool xstormy16_rtx_costs PARAMS ((rtx, int, int, int *)); /* Define the information needed to generate branch and scc insns. This is stored from the compare operation. */ @@ -97,6 +98,47 @@ inequality_operator (op, mode) return comparison_operator (op, mode) && ! equality_operator (op, mode); } +/* Compute a (partial) cost for rtx X. Return true if the complete + cost has been computed, and false if subexpressions should be + scanned. In either case, *TOTAL contains the cost result. */ + +static bool +xstormy16_rtx_costs (x, code, outer_code, total) + rtx x; + int code, outer_code ATTRIBUTE_UNUSED; + int *total; +{ + switch (code) + { + case CONST_INT: + if (INTVAL (x) < 16 && INTVAL (x) >= 0) + *total = COSTS_N_INSNS (1) / 2; + else if (INTVAL (x) < 256 && INTVAL (x) >= 0) + *total = COSTS_N_INSNS (1); + else + *total = COSTS_N_INSNS (2); + return true; + + case CONST_DOUBLE: + case CONST: + case SYMBOL_REF: + case LABEL_REF: + *total = COSTS_N_INSNS(2); + return true; + + case MULT: + *total = COSTS_N_INSNS (35 + 6); + return true; + case DIV: + *total = COSTS_N_INSNS (51 - 6); + return true; + + default: + return false; + } +} + + /* Branches are handled as follows: 1. HImode compare-and-branches. The machine supports these @@ -2165,4 +2207,7 @@ xstormy16_expand_builtin(exp, target, subtarget, mode, ignore) #undef TARGET_ASM_CAN_OUTPUT_MI_THUNK #define TARGET_ASM_CAN_OUTPUT_MI_THUNK default_can_output_mi_thunk_no_vcall +#undef TARGET_RTX_COSTS +#define TARGET_RTX_COSTS xstormy16_rtx_costs + struct gcc_target targetm = TARGET_INITIALIZER; |