X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Fgenattr.c;h=34e710d429d3f50a24cad568fd08ad8ee6570217;hp=84399b8a677e298eba599e3205e13875a5dd1e44;hb=0ac23bc8a78146c50d65692bc654ff40831fe18c;hpb=77ba95d053c5a5a5189cab0526a223ff1f1f4b37 diff --git a/gcc/genattr.c b/gcc/genattr.c index 84399b8a677..34e710d429d 100644 --- a/gcc/genattr.c +++ b/gcc/genattr.c @@ -1,6 +1,6 @@ /* Generate attribute information (insn-attr.h) from machine description. - Copyright (C) 1991, 1994, 1996, 1998, 1999, 2000, 2003, 2004, 2007, 2008 - Free Software Foundation, Inc. + Copyright (C) 1991, 1994, 1996, 1998, 1999, 2000, 2003, 2004, 2007, 2008, + 2010, 2011 Free Software Foundation, Inc. Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu) This file is part of GCC. @@ -30,46 +30,35 @@ along with GCC; see the file COPYING3. If not see #include "gensupport.h" -static void write_upcase (const char *); static void gen_attr (rtx); -static void -write_upcase (const char *str) -{ - for (; *str; str++) - putchar (TOUPPER(*str)); -} +static VEC (rtx, heap) *const_attrs, *reservations; + static void gen_attr (rtx attr) { - const char *p, *tag; + const char *p; int is_const = GET_CODE (XEXP (attr, 2)) == CONST; + if (is_const) + VEC_safe_push (rtx, heap, const_attrs, attr); + printf ("#define HAVE_ATTR_%s\n", XSTR (attr, 0)); /* If numeric attribute, don't need to write an enum. */ - p = XSTR (attr, 1); - if (*p == '\0') - printf ("extern int get_attr_%s (%s);\n", XSTR (attr, 0), - (is_const ? "void" : "rtx")); + if (GET_CODE (attr) == DEFINE_ENUM_ATTR) + printf ("extern enum %s get_attr_%s (%s);\n\n", + XSTR (attr, 1), XSTR (attr, 0), (is_const ? "void" : "rtx")); else { - printf ("enum attr_%s {", XSTR (attr, 0)); - - while ((tag = scan_comma_elt (&p)) != 0) - { - write_upcase (XSTR (attr, 0)); - putchar ('_'); - while (tag != p) - putchar (TOUPPER (*tag++)); - if (*p == ',') - fputs (", ", stdout); - } - - fputs ("};\n", stdout); - printf ("extern enum attr_%s get_attr_%s (%s);\n\n", - XSTR (attr, 0), XSTR (attr, 0), (is_const ? "void" : "rtx")); + p = XSTR (attr, 1); + if (*p == '\0') + printf ("extern int get_attr_%s (%s);\n", XSTR (attr, 0), + (is_const ? "void" : "rtx")); + else + printf ("extern enum attr_%s get_attr_%s (%s);\n\n", + XSTR (attr, 0), XSTR (attr, 0), (is_const ? "void" : "rtx")); } /* If `length' attribute, write additional function definitions and define @@ -86,6 +75,68 @@ extern int insn_current_length (rtx);\n\n\ } } +/* Check that attribute NAME is used in define_insn_reservation condition + EXP. Return true if it is. */ +static bool +check_tune_attr (const char *name, rtx exp) +{ + switch (GET_CODE (exp)) + { + case AND: + if (check_tune_attr (name, XEXP (exp, 0))) + return true; + return check_tune_attr (name, XEXP (exp, 1)); + + case IOR: + return (check_tune_attr (name, XEXP (exp, 0)) + && check_tune_attr (name, XEXP (exp, 1))); + + case EQ_ATTR: + return strcmp (XSTR (exp, 0), name) == 0; + + default: + return false; + } +} + +/* Try to find a const attribute (usually cpu or tune) that is used + in all define_insn_reservation conditions. */ +static bool +find_tune_attr (rtx exp) +{ + unsigned int i; + rtx attr; + + switch (GET_CODE (exp)) + { + case AND: + case IOR: + if (find_tune_attr (XEXP (exp, 0))) + return true; + return find_tune_attr (XEXP (exp, 1)); + + case EQ_ATTR: + if (strcmp (XSTR (exp, 0), "alternative") == 0) + return false; + + FOR_EACH_VEC_ELT (rtx, const_attrs, i, attr) + if (strcmp (XSTR (attr, 0), XSTR (exp, 0)) == 0) + { + unsigned int j; + rtx resv; + + FOR_EACH_VEC_ELT (rtx, reservations, j, resv) + if (! check_tune_attr (XSTR (attr, 0), XEXP (resv, 2))) + return false; + return true; + } + return false; + + default: + return false; + } +} + int main (int argc, char **argv) { @@ -106,6 +157,8 @@ main (int argc, char **argv) puts ("#ifndef GCC_INSN_ATTR_H"); puts ("#define GCC_INSN_ATTR_H\n"); + puts ("#include \"insn-attr-common.h\"\n"); + /* For compatibility, define the attribute `alternative', which is just a reference to the variable `which_alternative'. */ @@ -122,14 +175,14 @@ main (int argc, char **argv) if (desc == NULL) break; - if (GET_CODE (desc) == DEFINE_ATTR) + if (GET_CODE (desc) == DEFINE_ATTR + || GET_CODE (desc) == DEFINE_ENUM_ATTR) gen_attr (desc); else if (GET_CODE (desc) == DEFINE_DELAY) { if (! have_delay) { - printf ("#define DELAY_SLOTS\n"); printf ("extern int num_delay_slots (rtx);\n"); printf ("extern int eligible_for_delay (rtx, int, rtx, int);\n\n"); printf ("extern int const_num_delay_slots (rtx);\n\n"); @@ -155,14 +208,18 @@ main (int argc, char **argv) } else if (GET_CODE (desc) == DEFINE_INSN_RESERVATION) - num_insn_reservations++; + { + num_insn_reservations++; + VEC_safe_push (rtx, heap, reservations, desc); + } } if (num_insn_reservations > 0) { + bool has_tune_attr + = find_tune_attr (XEXP (VEC_index (rtx, reservations, 0), 2)); /* Output interface for pipeline hazards recognition based on DFA (deterministic finite state automata. */ - printf ("\n#define INSN_SCHEDULING\n"); printf ("\n/* DFA based pipeline interface. */"); printf ("\n#ifndef AUTOMATON_ALTS\n"); printf ("#define AUTOMATON_ALTS 0\n"); @@ -174,10 +231,24 @@ main (int argc, char **argv) printf ("#define CPU_UNITS_QUERY 0\n"); printf ("#endif\n\n"); /* Interface itself: */ - printf ("/* Internal insn code number used by automata. */\n"); - printf ("extern int internal_dfa_insn_code (rtx);\n\n"); - printf ("/* Insn latency time defined in define_insn_reservation. */\n"); - printf ("extern int insn_default_latency (rtx);\n\n"); + if (has_tune_attr) + { + printf ("/* Initialize fn pointers for internal_dfa_insn_code\n"); + printf (" and insn_default_latency. */\n"); + printf ("extern void init_sched_attrs (void);\n\n"); + printf ("/* Internal insn code number used by automata. */\n"); + printf ("extern int (*internal_dfa_insn_code) (rtx);\n\n"); + printf ("/* Insn latency time defined in define_insn_reservation. */\n"); + printf ("extern int (*insn_default_latency) (rtx);\n\n"); + } + else + { + printf ("#define init_sched_attrs() do { } while (0)\n\n"); + printf ("/* Internal insn code number used by automata. */\n"); + printf ("extern int internal_dfa_insn_code (rtx);\n\n"); + printf ("/* Insn latency time defined in define_insn_reservation. */\n"); + printf ("extern int insn_default_latency (rtx);\n\n"); + } printf ("/* Return nonzero if there is a bypass for given insn\n"); printf (" which is a data producer. */\n"); printf ("extern int bypass_p (rtx);\n\n");