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rtl.h (add_clobbers): Remove duplicate declaration.
* rtl.h (add_clobbers): Remove duplicate declaration. * recog.h (added_clobbers_hard_reg_p): New declaration. * genemit.c (struct clobber_pat): New field has_hard_reg. (gen_insn): Record if added clobbers clobber hard reg. (gen_split): Avoid unused warning if number of operands is 0. (output_added_clobbers_hard_reg_p): New function. (main): Call it. From-SVN: r39832
This commit is contained in:
Richard Kenner
Richard Kenner
parent
ad37f6ea74
commit
751aa7cc88
@ -1,3 +1,13 @@
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Sun Feb 18 09:30:09 2001 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
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* rtl.h (add_clobbers): Remove duplicate declaration.
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* recog.h (added_clobbers_hard_reg_p): New declaration.
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* genemit.c (struct clobber_pat): New field has_hard_reg.
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(gen_insn): Record if added clobbers clobber hard reg.
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(gen_split): Avoid unused warning if number of operands is 0.
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(output_added_clobbers_hard_reg_p): New function.
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(main): Call it.
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2001-02-18 Alan Modra <alan@linuxcare.com.au>
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* pa.c (hppa_expand_prologue): Simplify code storing return
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@ -1,5 +1,5 @@
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/* Generate code from machine description to emit insns as rtl.
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Copyright (C) 1987, 1988, 1991, 1994, 1995, 1997, 1998, 1999, 2000
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Copyright (C) 1987, 1988, 1991, 1994, 1995, 1997, 1998, 1999, 2000, 2001
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Free Software Foundation, Inc.
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This file is part of GNU CC.
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@ -44,6 +44,7 @@ struct clobber_pat
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rtx pattern;
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int first_clobber;
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struct clobber_pat *next;
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int has_hard_reg;
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} *clobber_list;
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/* Records one insn that uses the clobber list. */
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@ -62,6 +63,7 @@ static void gen_insn PARAMS ((rtx));
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static void gen_expand PARAMS ((rtx));
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static void gen_split PARAMS ((rtx));
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static void output_add_clobbers PARAMS ((void));
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static void output_added_clobbers_hard_reg_p PARAMS ((void));
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static void gen_rtx_scratch PARAMS ((rtx, enum rtx_code));
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static void output_peephole2_scratches PARAMS ((rtx));
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@ -297,11 +299,18 @@ gen_insn (insn)
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if (XVEC (insn, 1))
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{
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int has_hard_reg = 0;
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for (i = XVECLEN (insn, 1) - 1; i > 0; i--)
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if (GET_CODE (XVECEXP (insn, 1, i)) != CLOBBER
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|| (GET_CODE (XEXP (XVECEXP (insn, 1, i), 0)) != REG
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&& GET_CODE (XEXP (XVECEXP (insn, 1, i), 0)) != MATCH_SCRATCH))
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break;
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{
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if (GET_CODE (XVECEXP (insn, 1, i)) != CLOBBER)
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break;
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if (GET_CODE (XEXP (XVECEXP (insn, 1, i), 0)) == REG)
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has_hard_reg = 1;
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else if (GET_CODE (XEXP (XVECEXP (insn, 1, i), 0)) != MATCH_SCRATCH)
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break;
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}
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if (i != XVECLEN (insn, 1) - 1)
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{
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@ -349,6 +358,7 @@ gen_insn (insn)
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p->pattern = insn;
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p->first_clobber = i + 1;
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p->next = clobber_list;
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p->has_hard_reg = has_hard_reg;
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clobber_list = p;
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}
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@ -549,6 +559,7 @@ gen_split (split)
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register int i;
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int operands;
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const char *name = "split";
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const char *unused;
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if (GET_CODE (split) == DEFINE_PEEPHOLE2)
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name = "peephole2";
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@ -564,22 +575,23 @@ gen_split (split)
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max_operand_vec (split, 2);
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operands = MAX (max_opno, MAX (max_dup_opno, max_scratch_opno)) + 1;
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unused = (operands == 0 ? " ATTRIBUTE_UNUSED" : "");
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/* Output the prototype, function name and argument declarations. */
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if (GET_CODE (split) == DEFINE_PEEPHOLE2)
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{
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printf ("extern rtx gen_%s_%d PARAMS ((rtx, rtx *));\n",
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name, insn_code_number);
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printf ("rtx\ngen_%s_%d (curr_insn, operands)\n\
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rtx curr_insn ATTRIBUTE_UNUSED;\n\
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rtx *operands;\n",
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printf ("rtx\ngen_%s_%d (curr_insn, operands)\n",
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name, insn_code_number);
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printf (" rtx curr_insn ATTRIBUTE_UNUSED;\n");
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printf (" rtx *operands%s;\n", unused);
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}
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else
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{
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printf ("extern rtx gen_split_%d PARAMS ((rtx *));\n", insn_code_number);
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printf ("rtx\ngen_%s_%d (operands)\n rtx *operands;\n", name,
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insn_code_number);
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printf ("rtx\ngen_%s_%d (operands)\n", name, insn_code_number);
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printf (" rtx *operands%s;\n", unused);
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}
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printf ("{\n");
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@ -689,6 +701,39 @@ output_add_clobbers ()
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printf ("}\n");
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}
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/* Write a function, `added_clobbers_hard_reg_p' this is given an insn_code
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number that needs clobbers and returns 1 if they include a clobber of a
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hard reg and 0 if they just clobber SCRATCH. */
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static void
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output_added_clobbers_hard_reg_p ()
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{
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struct clobber_pat *clobber;
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struct clobber_ent *ent;
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int clobber_p;
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printf ("\n\nint\nadded_clobbers_hard_reg_p (insn_code_number)\n");
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printf (" int insn_code_number;\n");
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printf ("{\n");
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printf (" switch (insn_code_number)\n");
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printf (" {\n");
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for (clobber_p = 0; clobber_p <= 1; clobber_p++)
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{
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for (clobber = clobber_list; clobber; clobber = clobber->next)
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if (clobber->has_hard_reg == clobber_p)
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for (ent = clobber->insns; ent; ent = ent->next)
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printf (" case %d:\n", ent->code_number);
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printf (" return %d;\n\n", clobber_p);
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}
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printf (" default:\n");
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printf (" abort ();\n");
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printf (" }\n");
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printf ("}\n");
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}
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/* Generate code to invoke find_free_register () as needed for the
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scratch registers used by the peephole2 pattern in SPLIT. */
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@ -812,8 +857,10 @@ from the machine description file `md'. */\n\n");
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++insn_index_number;
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}
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/* Write out the routine to add CLOBBERs to a pattern. */
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/* Write out the routines to add CLOBBERs to a pattern and say whether they
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clobber a hard reg. */
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output_add_clobbers ();
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output_added_clobbers_hard_reg_p ();
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fflush (stdout);
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return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
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@ -1,6 +1,6 @@
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/* Declarations for interface to insn recognizer and insn-output.c.
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Copyright (C) 1987, 1996, 1997, 1998,
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1999, 2000 Free Software Foundation, Inc.
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Copyright (C) 1987, 1996, 1997, 1998, 1999, 2000, 2001
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Free Software Foundation, Inc.
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This file is part of GNU CC.
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@ -119,6 +119,7 @@ extern int mode_dependent_address_p PARAMS ((rtx));
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extern int recog PARAMS ((rtx, rtx, int *));
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extern void add_clobbers PARAMS ((rtx, int));
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extern int added_clobbers_hard_reg_p PARAMS ((int));
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extern void insn_extract PARAMS ((rtx));
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extern void extract_insn PARAMS ((rtx));
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extern void extract_constrain_insn_cached PARAMS ((rtx));
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@ -1783,9 +1783,6 @@ void restore_line_number_status PARAMS ((int old_value));
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extern void renumber_insns PARAMS ((FILE *));
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extern void remove_unnecessary_notes PARAMS ((void));
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/* In insn-emit.c */
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extern void add_clobbers PARAMS ((rtx, int));
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/* In combine.c */
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extern int combine_instructions PARAMS ((rtx, unsigned int));
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extern unsigned int extended_count PARAMS ((rtx, enum machine_mode, int));
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