diff options
Diffstat (limited to 'gcc/config/sh/sh.c')
| -rw-r--r-- | gcc/config/sh/sh.c | 112 |
1 files changed, 107 insertions, 5 deletions
diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c index dbebd24fd6f..93e7978c020 100644 --- a/gcc/config/sh/sh.c +++ b/gcc/config/sh/sh.c @@ -214,7 +214,11 @@ static void sh_media_init_builtins PARAMS ((void)); static rtx sh_expand_builtin PARAMS ((tree, rtx, rtx, enum machine_mode, int)); static int flow_dependent_p PARAMS ((rtx, rtx)); static void flow_dependent_p_1 PARAMS ((rtx, rtx, void *)); - +static int shiftcosts PARAMS ((rtx)); +static int andcosts PARAMS ((rtx)); +static int addsubcosts PARAMS ((rtx)); +static int multcosts PARAMS ((rtx)); +static bool sh_rtx_costs PARAMS ((rtx, int, int, int *)); /* Initialize the GCC target structure. */ #undef TARGET_ATTRIBUTE_TABLE @@ -266,6 +270,9 @@ static void flow_dependent_p_1 PARAMS ((rtx, rtx, void *)); #undef TARGET_FUNCTION_OK_FOR_SIBCALL #define TARGET_FUNCTION_OK_FOR_SIBCALL sh_function_ok_for_sibcall +#undef TARGET_RTX_COSTS +#define TARGET_RTX_COSTS sh_rtx_costs + struct gcc_target targetm = TARGET_INITIALIZER; /* Print the operand address in x to the stream. */ @@ -1274,7 +1281,7 @@ shift_insns_rtx (insn) /* Return the cost of a shift. */ -int +static inline int shiftcosts (x) rtx x; { @@ -1314,7 +1321,7 @@ shiftcosts (x) /* Return the cost of an AND operation. */ -int +static inline int andcosts (x) rtx x; { @@ -1354,7 +1361,7 @@ andcosts (x) /* Return the cost of an addition or a subtraction. */ -int +static inline int addsubcosts (x) rtx x; { @@ -1395,7 +1402,7 @@ addsubcosts (x) } /* Return the cost of a multiply. */ -int +static inline int multcosts (x) rtx x ATTRIBUTE_UNUSED; { @@ -1421,6 +1428,101 @@ multcosts (x) return 20; } +/* 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 +sh_rtx_costs (x, code, outer_code, total) + rtx x; + int code, outer_code, *total; +{ + switch (code) + { + case CONST_INT: + if (TARGET_SHMEDIA) + { + if (INTVAL (x) == 0) + *total = 0; + else if (outer_code == AND && and_operand ((x), DImode)) + *total = 0; + else if ((outer_code == IOR || outer_code == XOR + || outer_code == PLUS) + && CONST_OK_FOR_P (INTVAL (x))) + *total = 0; + else if (CONST_OK_FOR_J (INTVAL (x))) + *total = COSTS_N_INSNS (outer_code != SET); + else if (CONST_OK_FOR_J (INTVAL (x) >> 16)) + *total = COSTS_N_INSNS (2); + else if (CONST_OK_FOR_J ((INTVAL (x) >> 16) >> 16)) + *total = COSTS_N_INSNS (3); + else + *total = COSTS_N_INSNS (4); + return true; + } + if (CONST_OK_FOR_I (INTVAL (x))) + *total = 0; + else if ((outer_code == AND || outer_code == IOR || outer_code == XOR) + && CONST_OK_FOR_L (INTVAL (x))) + *total = 1; + else + *total = 8; + return true; + + case CONST: + case LABEL_REF: + case SYMBOL_REF: + if (TARGET_SHMEDIA64) + *total = COSTS_N_INSNS (4); + else if (TARGET_SHMEDIA32) + *total = COSTS_N_INSNS (2); + else + *total = 5; + return true; + + case CONST_DOUBLE: + if (TARGET_SHMEDIA) + *total = COSTS_N_INSNS (4); + else + *total = 10; + return true; + + case PLUS: + *total = COSTS_N_INSNS (addsubcosts (x)); + return true; + + case AND: + *total = COSTS_N_INSNS (andcosts (x)); + return true; + + case MULT: + *total = COSTS_N_INSNS (multcosts (x)); + return true; + + case ASHIFT: + case ASHIFTRT: + case LSHIFTRT: + *total = COSTS_N_INSNS (shiftcosts (x)); + return true; + + case DIV: + case UDIV: + case MOD: + case UMOD: + *total = COSTS_N_INSNS (20); + return true; + + case FLOAT: + case FIX: + *total = 100; + return true; + + default: + return false; + } +} + + /* Code to expand a shift. */ void |