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gcc/gcc/machmode.def
Aldy Hernandez 69ef87e2bc i386.md ("mmx_uavgv8qi3"): Use const_vector. 
2002-02-19  Aldy Hernandez  <aldyh@redhat.com>

	* config/i386/i386.md ("mmx_uavgv8qi3"): Use const_vector.
	("mmx_uavgv4hi3"): Same.
	("pmulhrwv4hi3"): Same.

	* tree-inline.c (walk_tree): Handle vectors.

	* c-common.c (constant_expression_warning): Handle vectors.
	(overflow_warning): Same.

	* sched-deps.c (sched_analyze_2): Handle vectors.

	* rtlanal.c (rtx_unstable_p): Handle vectors.
	(rtx_varies_p): Same.
	(count_occurrences): Same.
	(regs_set_between_p): Same.
	(modified_between_p): Same.
	(modified_in_p): Same.
	(volatile_insn_p): Same.
	(volatile_refs_p): Same.
	(side_effects_p): Same.
	(may_trap_p): Same.
	(inequality_comparisons_p): Same.
	(replace_regs): Same.
	(computed_jump_p_1): Same.

	* rtl.c (DEF_MACHMODE): Change all definitions to accept 8th
	argument.
	(inner_mode_array): New.
	(copy_rtx): Handle vectors.
	(copy_most_rtx): Same.
	(rtx_equal_p): Same.
	(get_mode_alignment): Adjust for vectors.

	* resource.c (mark_referenced_resources): Handle vectors.
	(mark_set_resources): Same.

	* reload1.c (eliminate_regs): Handle vectors.
	(elimination_effects): Same.
	(scan_paradoxical_subregs): Same.

	* reload.c (subst_reg_equivs): Handle vectors.

	* regrename.c (scan_rtx): Handle vectors.

	* regclass.c (reg_scan_mark_refs): Handle vectors.

	* recog.c (find_single_use_1): Handle vectors.

	* local-alloc.c (equiv_init_varies_p): Handle vectors.
	(contains_replace_regs): Same.
	(memref_referenced_p): Same.

	* integrate.c (copy_rtx_and_substitute): Handle vectors.
	(subst_constants): Same.

	* genattrtab.c (attr_copy_rtx): Handle vectors.
	(encode_units_mask): Same.
	(clear_struct_flag): Same.
	(count_sub_rtxs): Same.

	* gcse.c (want_to_gcse_p): Handle vectors.
	(oprs_unchanged_p): Same.
	(hash_expr_1): Same.
	(oprs_not_set_p): Same.
	(expr_killed_p): Same.
	(compute_transp): Same.
	(store_ops_ok): Same.

	* function.c (purge_addressof_1): Do not allow paradoxical subregs
	of vectors.
	(fixup_var_refs_1): Same.
	(instantiate_virtual_regs_1): Same.

	* fold-const.c (operand_equal_p): Handle vectors.
	(fold): Same.
	(rtl_expr_nonnegative_p): Same.

	* flow.c (mark_used_regs): Handle vectors.

	* df.c (df_uses_record): Handle vectors.

	* cselib.c (cselib_subst_to_values): Handle vectors.
	(cselib_mem_conflict_p): Same.
	(hash_rtx): Same.

	* cse.c (canon_reg): Handle vectors.
	(fold_rt): Same.
	(cse_process_notes): Same.
	(count_reg_usage): Same.
	(canon_hash): Same.

	* alias.c (nonlocal_mentioned_p): Add case for CONST_VECTOR.

	* combine.c (mark_used_regs_combine): Add case for CONST_VECTOR.

	* emit-rtl.c (init_emit_once): Generate const0_rtx for vectors.
	(gen_rtx): Handle CONST_VECTOR.
	(gen_const_vector_0): New.
	(copy_rtx_if_shared): CONST_VECTORs can be shared.
	(reset_used_flags): Same.
	(copy_insn_1): Same.
	(initializer_constant_valid_p): Handle VECTOR_CST.

	* doc/c-tree.texi (Expression trees): Document VECTOR_CST.

	* doc/rtl.texi (Constants): Document const_vector.
	(CONST0_RTX): Update for vectors.
	(RTL sharing): Same.

	* print-tree.c (print_node): Add case for VECTOR_CST.

	* tree.h (TREE_VECTOR_CST_ELTS): New.
	(struct tree_vector): New.
	(union tree_node): Add vector node.
	(build_vector): Add prototype.

	* tree.def (VECTOR_CST): New.

	* tree.c (build_vector): New.

	* expmed.c (make_tree): Handle CONST_VECTOR.

	* rtl.h (CONSTANT_P): CONST_VECTORs are constants too.
	(CONST_VECTOR_ELT): New.
	(CONST_VECTOR_NUNITS): New.

	* machmode.h (GET_MODE_INNER): New.
	(DEF_MACHMODE): Accept 8th arg.

	* machmode.def: Add 8th argument for vector inner mode.
	Add inner vector modes for vectors.

	* rtl.def (VEC_CONST): Remove.
	(CONST_VECTOR): New.

	* expr.c (clear_storage): Allow vectors.
	(is_zeros_p): Handle VECTOR_CST.

	* varasm.c (output_constant_pool): Handle vectors.
	(rtx_const): Add veclo and vechi fields.
	(kind): Add RTX_VECTOR.
	(decode_rtx_const): Add case for vector.

	* config/rs6000/rs6000-protos.h: Add zero_constant.

	* config/rs6000/rs6000.c (rs6000_emit_move): Handle vector
	constants.  Force easy vector constants into memory.
	(easy_vector_constant): New.
	(emit_easy_vector_constant): New.
	(rs6000_legitimize_reload_address): Do not generate bad reloads on
	darwin.

	* config/rs6000/rs6000.md ("altivec_lvx"): Reflect what
	instruction does.
	("altivec_lvxl"): Same.
	(altivec_lvebx): Same.
	(altivec_lvehx): Same.
	(altivec_lvewx): Same.
	("*movv4si_const0"): New.
	("*movv4sf_const0"): New.
	("*movv8hi_const0"): New.
	("*movv16qi_const0"): New.

From-SVN: r49853
2002-02-19 02:53:41 +00:00

183 lines
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/* This file contains the definitions and documentation for the
machine modes used in the GNU compiler.
Copyright (C) 1987, 1992, 1994, 1997, 1998, 2000 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
/* This file defines all the MACHINE MODES used by GCC.
A machine mode specifies a size and format of data
at the machine level.
Each RTL expression has a machine mode.
At the syntax tree level, each ..._TYPE and each ..._DECL node
has a machine mode which describes data of that type or the
data of the variable declared. */
/* The first argument is the internal name of the machine mode
used in the C source.
By convention these are in UPPER_CASE, except for the word "mode".
The second argument is the name of the machine mode in the
external ASCII format used for reading and printing RTL and trees.
By convention these names in UPPER_CASE.
Third argument states the kind of representation:
MODE_INT - integer
MODE_FLOAT - floating
MODE_PARTIAL_INT - PQImode, PHImode, PSImode and PDImode
MODE_CC - modes used for representing the condition code in a register
MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT - complex number
MODE_VECTOR_INT, MODE_VECTOR_FLOAT - vector
MODE_RANDOM - anything else
Fourth argument is the relative size of the object, in bits,
so we can have modes smaller than 1 byte.
Fifth argument is the relative size of the object, in bytes.
It is zero when the size is meaningless or not determined.
A byte's size is determined by BITS_PER_UNIT in tm.h.
Sixth arg is the relative size of subunits of the object.
It is same as the fifth argument except for complexes and vectors,
since they are really made of many equal size subunits.
Seventh arg is next wider natural mode of the same class. 0 if
there is none. Vector modes use this field to point to the next
vector size, so we can iterate through the different vectors modes.
The ordering is by increasing byte size, with QI coming before HI,
HI before SI, etc.
Eigth arg is the mode of the internal elements in a vector.
VOIDmode if not a vector.
*/
/* VOIDmode is used when no mode needs to be specified,
as for example on CONST_INT RTL expressions. */
DEF_MACHMODE (VOIDmode, "VOID", MODE_RANDOM, 0, 0, 0, VOIDmode, VOIDmode)
DEF_MACHMODE (BImode, "BI", MODE_INT, 1, 1, 1, QImode, VOIDmode)
DEF_MACHMODE (QImode, "QI", MODE_INT, BITS_PER_UNIT, 1, 1, HImode, VOIDmode)
DEF_MACHMODE (HImode, "HI", MODE_INT, BITS_PER_UNIT*2, 2, 2, SImode, VOIDmode)
DEF_MACHMODE (SImode, "SI", MODE_INT, BITS_PER_UNIT*4, 4, 4, DImode, VOIDmode)
DEF_MACHMODE (DImode, "DI", MODE_INT, BITS_PER_UNIT*8, 8, 8, TImode, VOIDmode)
DEF_MACHMODE (TImode, "TI", MODE_INT, BITS_PER_UNIT*16, 16, 16, OImode, VOIDmode)
DEF_MACHMODE (OImode, "OI", MODE_INT, BITS_PER_UNIT*32, 32, 32, VOIDmode, VOIDmode)
/* Pointers on some machines use these types to distinguish them from
ints. Useful if a pointer is 4 bytes but has some bits that are
not significant, so it is really not quite as wide as an integer. */
DEF_MACHMODE (PQImode, "PQI", MODE_PARTIAL_INT, BITS_PER_UNIT, 1, 1, PHImode, VOIDmode)
DEF_MACHMODE (PHImode, "PHI", MODE_PARTIAL_INT, BITS_PER_UNIT*2, 2, 2, PSImode, VOIDmode)
DEF_MACHMODE (PSImode, "PSI", MODE_PARTIAL_INT, BITS_PER_UNIT*4, 4, 4, PDImode, VOIDmode)
DEF_MACHMODE (PDImode, "PDI", MODE_PARTIAL_INT, BITS_PER_UNIT*8, 8, 8, VOIDmode, VOIDmode)
DEF_MACHMODE (QFmode, "QF", MODE_FLOAT, BITS_PER_UNIT, 1, 1, HFmode, VOIDmode)
DEF_MACHMODE (HFmode, "HF", MODE_FLOAT, BITS_PER_UNIT*2, 2, 2, TQFmode, VOIDmode)
DEF_MACHMODE (TQFmode, "TQF", MODE_FLOAT, BITS_PER_UNIT*3, 3, 3, SFmode, VOIDmode) /* MIL-STD-1750A */
DEF_MACHMODE (SFmode, "SF", MODE_FLOAT, BITS_PER_UNIT*4, 4, 4, DFmode, VOIDmode)
DEF_MACHMODE (DFmode, "DF", MODE_FLOAT, BITS_PER_UNIT*8, 8, 8, XFmode, VOIDmode)
DEF_MACHMODE (XFmode, "XF", MODE_FLOAT, BITS_PER_UNIT*12, 12, 12, TFmode, VOIDmode) /* IEEE extended */
DEF_MACHMODE (TFmode, "TF", MODE_FLOAT, BITS_PER_UNIT*16, 16, 16, VOIDmode, VOIDmode)
/* Complex modes. */
DEF_MACHMODE (QCmode, "QC", MODE_COMPLEX_FLOAT, BITS_PER_UNIT*2, 2, 1, HCmode, VOIDmode)
DEF_MACHMODE (HCmode, "HC", MODE_COMPLEX_FLOAT, BITS_PER_UNIT*4, 4, 2, SCmode, VOIDmode)
DEF_MACHMODE (SCmode, "SC", MODE_COMPLEX_FLOAT, BITS_PER_UNIT*8, 8, 4, DCmode, VOIDmode)
DEF_MACHMODE (DCmode, "DC", MODE_COMPLEX_FLOAT, BITS_PER_UNIT*16, 16, 8, XCmode, VOIDmode)
DEF_MACHMODE (XCmode, "XC", MODE_COMPLEX_FLOAT, BITS_PER_UNIT*24, 24, 12, TCmode, VOIDmode)
DEF_MACHMODE (TCmode, "TC", MODE_COMPLEX_FLOAT, BITS_PER_UNIT*32, 32, 16, VOIDmode, VOIDmode)
DEF_MACHMODE (CQImode, "CQI", MODE_COMPLEX_INT, BITS_PER_UNIT*2, 2, 1, CHImode, VOIDmode)
DEF_MACHMODE (CHImode, "CHI", MODE_COMPLEX_INT, BITS_PER_UNIT*4, 4, 2, CSImode, VOIDmode)
DEF_MACHMODE (CSImode, "CSI", MODE_COMPLEX_INT, BITS_PER_UNIT*8, 8, 4, CDImode, VOIDmode)
DEF_MACHMODE (CDImode, "CDI", MODE_COMPLEX_INT, BITS_PER_UNIT*16, 16, 8, CTImode, VOIDmode)
DEF_MACHMODE (CTImode, "CTI", MODE_COMPLEX_INT, BITS_PER_UNIT*32, 32, 16, COImode, VOIDmode)
DEF_MACHMODE (COImode, "COI", MODE_COMPLEX_INT, BITS_PER_UNIT*64, 64, 32, VOIDmode, VOIDmode)
/* Vector modes. */
/* There are no V1xx vector modes. These are equivalent to normal
scalar modes. */
/* The wider mode field for vectors follows in order of increasing bit
size with QI coming before HI, HI before SI, and SI before DI
within same bit sizes. */
DEF_MACHMODE (V2QImode, "V2QI", MODE_VECTOR_INT, BITS_PER_UNIT*2, 2, 1, V4QImode, QImode)
DEF_MACHMODE (V2HImode, "V2HI", MODE_VECTOR_INT, BITS_PER_UNIT*4, 4, 2, V8QImode, HImode)
DEF_MACHMODE (V2SImode, "V2SI", MODE_VECTOR_INT, BITS_PER_UNIT*8, 8, 4, V16QImode, SImode)
DEF_MACHMODE (V2DImode, "V2DI", MODE_VECTOR_INT, BITS_PER_UNIT*16, 16, 8, V8SImode, DImode)
DEF_MACHMODE (V4QImode, "V4QI", MODE_VECTOR_INT, BITS_PER_UNIT*4, 4, 1, V2HImode, QImode)
DEF_MACHMODE (V4HImode, "V4HI", MODE_VECTOR_INT, BITS_PER_UNIT*8, 8, 2, V2SImode, HImode)
DEF_MACHMODE (V4SImode, "V4SI", MODE_VECTOR_INT, BITS_PER_UNIT*16, 16, 4, V2DImode, SImode)
DEF_MACHMODE (V4DImode, "V4DI", MODE_VECTOR_INT, BITS_PER_UNIT*32, 32, 8, V8DImode, DImode)
DEF_MACHMODE (V8QImode, "V8QI", MODE_VECTOR_INT, BITS_PER_UNIT*8, 8, 1, V4HImode, QImode)
DEF_MACHMODE (V8HImode, "V8HI", MODE_VECTOR_INT, BITS_PER_UNIT*16, 16, 2, V4SImode, HImode)
DEF_MACHMODE (V8SImode, "V8SI", MODE_VECTOR_INT, BITS_PER_UNIT*32, 32, 4, V4DImode, SImode)
DEF_MACHMODE (V8DImode, "V8DI", MODE_VECTOR_INT, BITS_PER_UNIT*64, 64, 8, VOIDmode, DImode)
DEF_MACHMODE (V16QImode, "V16QI", MODE_VECTOR_INT, BITS_PER_UNIT*16, 16, 1, V8HImode, QImode)
DEF_MACHMODE (V2SFmode, "V2SF", MODE_VECTOR_FLOAT, BITS_PER_UNIT*8, 8, 4, V4SFmode, SFmode)
DEF_MACHMODE (V2DFmode, "V2DF", MODE_VECTOR_FLOAT, BITS_PER_UNIT*16, 16, 8, V8SFmode, DFmode)
DEF_MACHMODE (V4SFmode, "V4SF", MODE_VECTOR_FLOAT, BITS_PER_UNIT*16, 16, 4, V2DFmode, SFmode)
DEF_MACHMODE (V4DFmode, "V4DF", MODE_VECTOR_FLOAT, BITS_PER_UNIT*32, 32, 8, V8DFmode, DFmode)
DEF_MACHMODE (V8SFmode, "V8SF", MODE_VECTOR_FLOAT, BITS_PER_UNIT*32, 32, 4,V4DFmode, SFmode)
DEF_MACHMODE (V8DFmode, "V8DF", MODE_VECTOR_FLOAT, BITS_PER_UNIT*64, 64, 8, VOIDmode, DFmode)
DEF_MACHMODE (V16SFmode, "V16SF", MODE_VECTOR_FLOAT, 512, 64, 4, VOIDmode, SFmode)
/* BLKmode is used for structures, arrays, etc.
that fit no more specific mode. */
DEF_MACHMODE (BLKmode, "BLK", MODE_RANDOM, 0, 0, 0, VOIDmode, VOIDmode)
/* The modes for representing the condition codes come last. CCmode
is always defined. Additional modes for the condition code can be
specified in the EXTRA_CC_MODES macro. All MODE_CC modes are the
same width as SImode and have VOIDmode as their next wider mode. */
#define CC(E, M) DEF_MACHMODE (E, M, MODE_CC, BITS_PER_UNIT*4, 4, 4, VOIDmode, VOIDmode)
CC (CCmode, "CC")
#ifdef EXTRA_CC_MODES
EXTRA_CC_MODES
#endif
#undef CC
/* The symbol Pmode stands for one of the above machine modes (usually SImode).
The tm file specifies which one. It is not a distinct mode. Nevertheless,
while processing the md file, we wish to treat as a distinct mode so that
it is preserved intact through to the insn-foo.c files. This eliminates a
lot of redundancy in ports that support both 32-bit and 64-bit targets. */
#ifdef GENERATOR_FILE
#undef Pmode
DEF_MACHMODE (Pmode, "P", MODE_RANDOM, 0, 0, 0, VOIDmode, VOIDmode)
#endif
/*
Local variables:
mode:c
version-control: t
End:
*/
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