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From: William Schmidt <wschmidt@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc(refs/users/wschmidt/heads/builtins10)] rs6000: Build and store function type identifiers Date: Mon, 26 Apr 2021 20:49:28 +0000 (GMT) [thread overview] Message-ID: <20210426204928.423D5395183B@sourceware.org> (raw) https://gcc.gnu.org/g:900e1c2fc9be442198f2adb59a015606dbe333b7 commit 900e1c2fc9be442198f2adb59a015606dbe333b7 Author: Bill Schmidt <wschmidt@linux.ibm.com> Date: Fri Apr 2 16:38:08 2021 -0500 rs6000: Build and store function type identifiers 2021-04-02 Bill Schmidt <wschmidt@linux.ibm.com> gcc/ * config/rs6000/rs6000-gen-builtins.c (complete_vector_type): New function. (complete_base_type): Likewise. (construct_fntype_id): Likewise. (parse_bif_entry): Call construct_fntype_id. (parse_ovld_entry): Likewise. Diff: --- gcc/config/rs6000/rs6000-gen-builtins.c | 233 ++++++++++++++++++++++++++++++++ 1 file changed, 233 insertions(+) diff --git a/gcc/config/rs6000/rs6000-gen-builtins.c b/gcc/config/rs6000/rs6000-gen-builtins.c index d5deefbfd3b..0358ff26414 100644 --- a/gcc/config/rs6000/rs6000-gen-builtins.c +++ b/gcc/config/rs6000/rs6000-gen-builtins.c @@ -1313,6 +1313,231 @@ endian = %d.\n", return PC_OK; } +/* Convert a vector type into a mode string. */ +static void +complete_vector_type (typeinfo *typeptr, char *buf, int *bufi) +{ + if (typeptr->isbool) + buf[(*bufi)++] = 'b'; + buf[(*bufi)++] = 'v'; + if (typeptr->ispixel) + { + memcpy (&buf[*bufi], "p8hi", 4); + *bufi += 4; + } + else + { + switch (typeptr->base) + { + case BT_CHAR: + memcpy (&buf[*bufi], "16qi", 4); + *bufi += 4; + break; + case BT_SHORT: + memcpy (&buf[*bufi], "8hi", 3); + *bufi += 3; + break; + case BT_INT: + memcpy (&buf[*bufi], "4si", 3); + *bufi += 3; + break; + case BT_LONGLONG: + memcpy (&buf[*bufi], "2di", 3); + *bufi += 3; + break; + case BT_FLOAT: + memcpy (&buf[*bufi], "4sf", 3); + *bufi += 3; + break; + case BT_DOUBLE: + memcpy (&buf[*bufi], "2df", 3); + *bufi += 3; + break; + case BT_INT128: + memcpy (&buf[*bufi], "1ti", 3); + *bufi += 3; + break; + case BT_FLOAT128: + memcpy (&buf[*bufi], "1tf", 3); + *bufi += 3; + break; + case BT_VPAIR: + memcpy (&buf[*bufi], "1poi", 4); + *bufi += 4; + break; + case BT_VQUAD: + memcpy (&buf[*bufi], "1pxi", 4); + *bufi += 4; + break; + default: + (*diag) ("unhandled basetype %d.\n", typeptr->base); + exit (EC_INTERR); + } + } +} + +/* Convert a base type into a mode string. */ +static void +complete_base_type (typeinfo *typeptr, char *buf, int *bufi) +{ + switch (typeptr->base) + { + case BT_CHAR: + memcpy (&buf[*bufi], "qi", 2); + break; + case BT_SHORT: + memcpy (&buf[*bufi], "hi", 2); + break; + case BT_INT: + memcpy (&buf[*bufi], "si", 2); + break; + case BT_LONG: + memcpy (&buf[*bufi], "lg", 2); + break; + case BT_LONGLONG: + memcpy (&buf[*bufi], "di", 2); + break; + case BT_FLOAT: + memcpy (&buf[*bufi], "sf", 2); + break; + case BT_DOUBLE: + memcpy (&buf[*bufi], "df", 2); + break; + case BT_LONGDOUBLE: + memcpy (&buf[*bufi], "ld", 2); + break; + case BT_INT128: + memcpy (&buf[*bufi], "ti", 2); + break; + case BT_FLOAT128: + memcpy (&buf[*bufi], "tf", 2); + break; + case BT_BOOL: + memcpy (&buf[*bufi], "bi", 2); + break; + case BT_STRING: + memcpy (&buf[*bufi], "st", 2); + break; + case BT_DECIMAL32: + memcpy (&buf[*bufi], "sd", 2); + break; + case BT_DECIMAL64: + memcpy (&buf[*bufi], "dd", 2); + break; + case BT_DECIMAL128: + memcpy (&buf[*bufi], "td", 2); + break; + case BT_IBM128: + memcpy (&buf[*bufi], "if", 2); + break; + default: + (*diag) ("unhandled basetype %d.\n", typeptr->base); + exit (EC_INTERR); + } + + *bufi += 2; +} + +/* Build a function type descriptor identifier from the return type + and argument types described by PROTOPTR, and store it if it does + not already exist. Return the identifier. */ +static char * +construct_fntype_id (prototype *protoptr) +{ + /* Determine the maximum space for a function type descriptor id. + Each type requires at most 9 characters (6 for the mode*, 1 for + the optional 'u' preceding the mode, 1 for the optional 'p' + preceding the mode, and 1 for an underscore following the mode). + We also need 5 characters for the string "ftype" that separates + the return mode from the argument modes. The last argument doesn't + need a trailing underscore, but we count that as the one trailing + "ftype" instead. For the special case of zero arguments, we need 9 + for the return type and 7 for "ftype_v". Finally, we need one + character for the terminating null. Thus for a function with N + arguments, we need at most 9N+15 characters for N>0, otherwise 17. + ---- + *Worst case is bv16qi for "vector bool char". */ + int len = protoptr->nargs ? (protoptr->nargs + 1) * 9 + 6 : 17; + char *buf = (char *) malloc (len); + int bufi = 0; + + if (protoptr->rettype.ispointer) + buf[bufi++] = 'p'; + + if (protoptr->rettype.isvoid) + buf[bufi++] = 'v'; + else + { + if (protoptr->rettype.isunsigned) + buf[bufi++] = 'u'; + if (protoptr->rettype.isvector) + complete_vector_type (&protoptr->rettype, buf, &bufi); + else + complete_base_type (&protoptr->rettype, buf, &bufi); + } + + memcpy (&buf[bufi], "_ftype", 6); + bufi += 6; + + if (!protoptr->nargs) + { + memcpy (&buf[bufi], "_v", 2); + bufi += 2; + } + else + { + typelist *argptr = protoptr->args; + for (int i = 0; i < protoptr->nargs; i++, argptr = argptr->next) + { + assert (argptr); + buf[bufi++] = '_'; + if (argptr->info.isconst + && argptr->info.base == BT_INT + && !argptr->info.ispointer) + { + buf[bufi++] = 'c'; + buf[bufi++] = 'i'; + continue; + } + if (argptr->info.ispointer) + { + if (argptr->info.isvoid) + { + if (argptr->info.isconst) + { + memcpy (&buf[bufi], "pcvoid", 6); + bufi += 6; + continue; + } + else + { + buf[bufi++] = 'p'; + buf[bufi++] = 'v'; + continue; + } + } + else + buf[bufi++] = 'p'; + } + + if (argptr->info.isunsigned) + buf[bufi++] = 'u'; + if (argptr->info.isvector) + complete_vector_type (&argptr->info, buf, &bufi); + else + complete_base_type (&argptr->info, buf, &bufi); + } + assert (!argptr); + } + + buf[bufi] = '\0'; + + /* Ignore return value, as duplicates are expected. */ + (void) rbt_insert (&fntype_rbt, buf); + + return buf; +} + /* Parse a function prototype. This code is shared by the bif and overload file processing. */ static parse_codes @@ -1425,6 +1650,10 @@ parse_bif_entry () if (parse_prototype (&bifs[curr_bif].proto) == PC_PARSEFAIL) return PC_PARSEFAIL; + /* Build a function type descriptor identifier from the return type + and argument types, and store it if it does not already exist. */ + bifs[curr_bif].fndecl = construct_fntype_id (&bifs[curr_bif].proto); + /* Now process line 2. First up is the builtin id. */ if (!advance_line (bif_file)) { @@ -1602,6 +1831,10 @@ parse_ovld_entry () if (ovlds[curr_ovld].proto.nargs > max_ovld_args) max_ovld_args = ovlds[curr_ovld].proto.nargs; + /* Build a function type descriptor identifier from the return type + and argument types, and store it if it does not already exist. */ + ovlds[curr_ovld].fndecl = construct_fntype_id (&ovlds[curr_ovld].proto); + /* Now process line 2, which just contains the builtin id and an optional overload id. */ if (!advance_line (ovld_file))
next reply other threads:[~2021-04-26 20:49 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-26 20:49 William Schmidt [this message] -- strict thread matches above, loose matches on Subject: below -- 2021-06-25 16:16 William Schmidt 2021-06-15 17:17 William Schmidt 2021-04-02 22:09 William Schmidt 2021-04-01 19:48 William Schmidt 2021-03-25 15:45 William Schmidt
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