* Makefile.in (BUILD_RTL): Replace $(BUILD_PREFIX)insn-modes.o

	with min-insn-modes.o.
	(STAGESTUFF): Add min-insn-modes.c.
	(genobjs): Add genmodes.o.
	(print-rtl.o, print-rtl1.o): Depend on $(TM_P_H).
	(insn-modes.o): Depend on $(TM_H) not $(GTM_H); also real.h.
	(min-insn-modes.c, min-insn-modes.o): New rules.
	(s-modes): Also generate min-insn-modes.c.
	($(BUILD_PREFIX_1)insn-modes.o): Kill.
	* genmodes.c (struct mode_data): Add format field.
	(blank_mode, validate_mode, complete_mode): Update to match.
	(make_scalar_mode): Separate into make_int_mode and make_float_mode.
	(_SCALAR_MODE): Kill.
	(FLOAT_MODE, FRACTIONAL_FLOAT_MODE): Add format argument.
	(emit_insn_modes_c_header): Adjust.
	(emit_min_insn_modes_c_header, emit_real_format_for_mode)
	(emit_min_insn_modes_c): New functions.
	(emit_insn_modes_c): Call emit_real_format_for_mode.
	(main): Add -m option to generate min-insn-modes.c.
	* machmode.h: Update documentation.  Add format argument to
	all uses of FLOAT_MODE.
	* real.c: Don't define real_format_for_mode here.

	* dwarfout.c: Move default definition of PRINT_REG...
	* defaults.h: ...here.
	* print-rtl.c: Include tm_p.h.
	(DEBUG_PRINT_REG, DEBUG_REGISTER_NAMES, debug_reg_names, reg_names):
	Kill.
	(print_rtx): Use PRINT_REG, not DEBUG_PRINT_REG.  But surround
	this entire block with #ifndef GENERATOR_FILE.
	* regclass.c: Unconditionally define reg_names.
	* config/mips/mips.h, config/rs6000/rs6000.h, config/sh/sh.h
	Don't define DEBUG_REGISTER_NAMES.
	* config/rs6000/darwin.h: Don't use DEBUG_REGISTER_NAMES in
	redefinition of REGISTER_NAMES.
	* config/i386/i386.h: Don't define DEBUG_PRINT_REG.

	* combine.c: Change all preprocessor conditionals on
	EXTRA_CC_MODES to use SELECT_CC_MODE instead; rearrange a bit
	for clarity.
	* genopinit.c: Remove mention of EXTRA_CC_MODES in comment.
	* configure.in: Don't define EXTRA_CC_MODES.
	* configure, config.in: Regenerate.
	* doc/tm.texi: Remove documentation of EXTRA_CC_MODES.

	* config/arc/arc.c, config/m32r/m32r.c, config/sparc/sparc.c:
	May assume that GET_MODE_CLASS is accurate for extra CC modes
	at all times.

	* config/i860/i860.h (INIT_CUMULATIVE_ARGS): Pass correct
	number of arguments to aggregate_value_p.

	* genmodes.c (RESET_FLOAT_FORMAT, reset_float_format): New.
	* machmode.def: Explain ARCH-modes.def.  Document
	RESET_FLOAT_FORMAT.  Improve commentary on various mode
	clusters.  Do not define OI, PQI, PHI, PSI, PDI, QF, HF, TQF,
	XF, or TF modes here.  Remove backward-compatibility
	definition of CC.

	* config/alpha/alpha-modes.def: New file; define TF mode.
	* config/arc/arm-modes.def: Define XF mode.
	* config/c4x/c4x-modes.def: Define QF and HF modes.  Unset
	float format for SF and DF modes.
	* config/dsp16xx/dsp16xx-modes.def: New file; define HF mode.
	* config/i386/i386-modes.def: Define XF and TF modes.
	* config/i960/i960-modes.def: Define TF mode.
	* config/ia64/ia64-modes.def: Define TF and OI modes.
	* config/m68k/m68k-modes.def: New file; define XF mode.
	* config/mips/mips-modes.def: New file; define TF mode, reset
	formats for SF and DF modes.
	* config/pa/pa-modes.def: Define TF mode.
	* config/rs6000/rs6000.c: Define TF and PSI modes.
	* config/s390/s390-modes.def: Define OI mode.
	* config/sh/sh-modes.def: New file; define PSI mode.
	* config/sparc/sparc-modes.def: Define TF mode.
	* config/vax/vax-modes.def: New file; reset formats for SF and
	DF modes.

	* config/c4x/c4x.c (c4x_override_options): No need to mess
	with real_format_for_mode or set REAL_MODE_FORMATs.
	(c4x_immed_int_constant): Don't apply GET_MODE_CLASS to rtx
	variable.
	* config/i386/i386.c (override_options): No need to set
	REAL_MODE_FORMATs here.
	* config/i960/i960.c (i960_initialize): Likewise.
	* config/m68k/m68k.c (m68k_override_options): Likewise.
	* config/ia64/ia64.c (ia64_override_options): Set REAL_MODE_FORMAT
	for TFmode only if not the default.
	* config/mips/mips.c (override_options): Likewise.
	* config/vax/vax.c (override_optionms): Set REAL_MODE_FORMAT for
	DFmode only if not the default.

	* config/i370/i370.h (RET_REG): Don't consider TFmode.
	* config/m68hc11/m68hc11.c (print_operand): Don't consider XFmode.
	* config/dsp16xx/dsp16xx.c (hard_regno_mode_ok): #if 0 out use
	of modes that don't appear anywhere in the machine description.

	* config/arc/arc-modes.def, config/arm/arm-modes.def
	* config/c4x/c4x-modes.def, config/frv/frv-modes.def
	* config/i386/i386-modes.def, config/i960/i960-modes.def
	* config/ia64/ia64-modes.def, config/mmix/mmix-modes.def
	* config/pa/pa-modes.def, config/pdp11/pdp11-modes.def
	* config/rs6000/rs6000-modes.def, config/s390/s390-modes.def
	* config/sparc/sparc-modes.def: Convert to new style for
	declaring extra CC modes.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@72440 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 42 insertions, 32 deletions

diff --git a/gcc/machmode.def b/gcc/machmode.def
index 8688f8ad029..72b1ec83644 100644
--- a/gcc/machmode.def
+++ b/gcc/machmode.def
@@ -50,6 +50,13 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
    A BITSIZE, BYTESIZE, or COUNT argument must be a positive integer
    constant.
 
+   A FORMAT argument must be one of the real_mode_format structures
+   declared in real.h, or else a literal 0.
+
+   This file defines only those modes which are of use on almost all
+   machines.  Other modes can be defined in the target-specific
+   mode definition file, config/ARCH/ARCH-modes.def.
+
    Order matters in this file in so far as statements which refer to
    other modes must appear after the modes they refer to.  However,
    statements which do not refer to other modes may appear in any
@@ -69,13 +76,20 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
         declares MODE to be of class INT, BYTESIZE bytes wide in
 	storage, but with only BITSIZE significant bits.
 
-     FLOAT_MODE (MODE, BYTESIZE);
-        declares MODE to be of class FLOAT and BYTESIZE bytes wide.
+     FLOAT_MODE (MODE, BYTESIZE, FORMAT);
+        declares MODE to be of class FLOAT and BYTESIZE bytes wide,
+	using floating point format FORMAT.
 	All of the bits of its representation are significant.
 
-     FRACTIONAL_FLOAT_MODE (MODE, BITSIZE, BYTESIZE);
+     FRACTIONAL_FLOAT_MODE (MODE, BITSIZE, BYTESIZE, FORMAT);
         declares MODE to be of class FLOAT, BYTESIZE bytes wide in
-	storage, but with only BITSIZE significant bits.
+	storage, but with only BITSIZE significant bits, using
+	floating point format FORMAT.
+
+     RESET_FLOAT_FORMAT (MODE, FORMAT);
+	changes the format of MODE, which must be class FLOAT,
+	to FORMAT.  Use in an ARCH-modes.def to reset the format
+	of one of the float modes defined in this file.
 
      PARTIAL_INT_MODE (MODE);
         declares a mode of class PARTIAL_INT with the same size as
@@ -106,10 +120,6 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 	error if there is no 'F'.  For INT modes, the names are
 	derived by prefixing a C to the name.
 
-     BITS_PER_UNIT (COUNT);
-        Sets the number of bits in a machine byte (least addressable
-	unit).  If this statement does not appear, the default is 8.
-
    Note: If a mode is ever made which is more than 255 bytes wide,
    machmode.h and genmodes.c will have to be changed to allocate
    more space for the mode_size and mode_alignment arrays.  */
@@ -125,39 +135,34 @@ RANDOM_MODE (BLK);
 /* Single bit mode used for booleans.  */
 FRACTIONAL_INT_MODE (BI, 1, 1);
 
-/* Basic integer modes.  */
+/* Basic integer modes.  We go up to TI in generic code (128 bits).
+   The name OI is reserved for a 256-bit type (needed by some back ends).
+   FIXME TI shouldn't be generically available either.  */
 INT_MODE (QI, 1);
 INT_MODE (HI, 2);
 INT_MODE (SI, 4);
 INT_MODE (DI, 8);
 INT_MODE (TI, 16);
-INT_MODE (OI, 32);
-
-/* 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.  */
-PARTIAL_INT_MODE (QI);
-PARTIAL_INT_MODE (HI);
-PARTIAL_INT_MODE (SI);
-PARTIAL_INT_MODE (DI);
-
-/* Basic floating point modes.  */
-FLOAT_MODE (QF, 1);	/* C4x single precision */
-FLOAT_MODE (HF, 2);	/* C4x double precision */
-FLOAT_MODE (TQF, 3);	/* MIL-STD-1750a */
-FLOAT_MODE (SF, 4);
-FLOAT_MODE (DF, 8);
-FLOAT_MODE (XF, 12);	/* IEEE extended (80-bit) */
-FLOAT_MODE (TF, 16);
-
-/* Basic CC modes.  */
+
+/* No partial integer modes are defined by default.  */
+
+/* Basic floating point modes.  SF and DF are the only modes provided
+   by default.  The names QF, HF, XF, and TF are reserved for targets
+   that need 1-word, 2-word, 80-bit, or 128-bit float types respectively.
+
+   These are the IEEE mappings.  They can be overridden with
+   RESET_FLOAT_FORMAT or at runtime (in OVERRIDE_OPTIONS).  */
+
+FLOAT_MODE (SF, 4, ieee_single_format);
+FLOAT_MODE (DF, 8, ieee_double_format);
+
+/* Basic CC modes.
+   FIXME define this only for targets that need it.  */
 CC_MODE (CC);
 
 /* Allow the target to specify additional modes of various kinds.  */
 #if HAVE_EXTRA_MODES
-# define CC(X) CC_MODE(X);  /* backward compatibility, temporary */
 # include EXTRA_MODES_FILE
-# undef CC
 #endif
 
 /* Complex modes.  */
@@ -176,7 +181,12 @@ VECTOR_MODE (INT, SI, 8)
 VECTOR_MODE (INT, DI, 4);
 VECTOR_MODE (INT, DI, 8);
 
-VECTOR_MODE (INT, DI, 1);  /* PPC uses this.  Why not plain DI? */
+/* PPC uses this to distinguish between DImode passed in
+   float registers and DImode passed in vector registers.
+   It would be in rs6000-modes.def but it's referenced in
+   c-common.c.  FIXME.  */
+
+VECTOR_MODE (INT, DI, 1);
 
 VECTOR_MODES (FLOAT, 4);      /*                 V2HF */
 VECTOR_MODES (FLOAT, 8);      /*            V4HF V2SF */