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machmode.def: Add BImode.
* machmode.def: Add BImode. Add a column for bitsize.
* machmode.h (DEF_MACHMODE): Adjust for extra column.
(GET_MODE_BITSIZE): Use it.
* rtl.c (DEF_MACHMODE): Adjust for extra column.
(mode_bitsize): New.
(mode_mask_array): Use bitsize.
* combine.c (combine_simplify_rtx): Require inner and outer
modes to match on nonzero_bits optimizations.
From-SVN: r36501
This commit is contained in:
Richard Henderson
parent
42d5d0f171
commit
a191f0ee83
@ -1,3 +1,14 @@
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2000-09-18 Richard Henderson <rth@cygnus.com>
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* machmode.def: Add BImode. Add a column for bitsize.
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* machmode.h (DEF_MACHMODE): Adjust for extra column.
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(GET_MODE_BITSIZE): Use it.
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* rtl.c (DEF_MACHMODE): Adjust for extra column.
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(mode_bitsize): New.
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(mode_mask_array): Use bitsize.
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* combine.c (combine_simplify_rtx): Require inner and outer
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modes to match on nonzero_bits optimizations.
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2000-09-18 Bernd Schmidt <bernds@redhat.co.uk>
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* reload1.c (forget_old_reloads_1): If a hard reg is stored, clear
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@ -86,8 +97,8 @@
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* configure.in: Define _GNU_SOURCE only when using the GNU C
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Library.
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* configure: Regenerated.
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* config.in: Regenerated.
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* configure: Regenerated.
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* config.in: Regenerated.
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2000-09-17 Mark Mitchell <mark@codesourcery.com>
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@ -141,15 +152,15 @@ Sun Sep 17 10:46:17 2000 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
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2000-09-17 Bernd Schmidt <bernds@redhat.co.uk>
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* expr.h (emit_library_call, emit_library_call_value): Delete
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* expr.h (emit_library_call, emit_library_call_value): Delete
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declarations.
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* rtl.h (enum libcall_type): New.
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(emit_library_call, emit_library_call_value): Change fn_type arg to
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be of type enum libcall_type.
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be of type enum libcall_type.
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* calls.c: Likewise for the function definitions. Several callers
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throughout changed to use the new enumeration appropriately.
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(emit_library_call_value_1): Likewise. Put back code to make libcall
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blocks of equal form, but only use it for the two new higher
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blocks of equal form, but only use it for the two new higher
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enumeration values.
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2000-09-16 Mark Mitchell <mark@codesourcery.com>
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@ -611,7 +622,7 @@ Wed Sep 13 02:31:23 EDT 2000 John Wehle (john@feith.com)
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2000-09-13 Michael Hayes <mhayes@cygnus.com>
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* loop.c (note_set_pseudo_multiple_uses): Correct.
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* loop.c (note_set_pseudo_multiple_uses): Correct.
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2000-09-12 Jim Wilson <wilson@cygnus.com>
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@ -4347,13 +4347,16 @@ combine_simplify_rtx (x, op0_mode, last, in_dest)
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if (STORE_FLAG_VALUE == 1
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&& new_code == NE && GET_MODE_CLASS (mode) == MODE_INT
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&& op1 == const0_rtx && nonzero_bits (op0, mode) == 1)
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&& op1 == const0_rtx
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&& mode == GET_MODE (op0)
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&& nonzero_bits (op0, mode) == 1)
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return gen_lowpart_for_combine (mode,
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expand_compound_operation (op0));
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else if (STORE_FLAG_VALUE == 1
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&& new_code == NE && GET_MODE_CLASS (mode) == MODE_INT
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&& op1 == const0_rtx
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&& mode == GET_MODE (op0)
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&& (num_sign_bit_copies (op0, mode)
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== GET_MODE_BITSIZE (mode)))
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{
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@ -4365,6 +4368,7 @@ combine_simplify_rtx (x, op0_mode, last, in_dest)
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else if (STORE_FLAG_VALUE == 1
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&& new_code == EQ && GET_MODE_CLASS (mode) == MODE_INT
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&& op1 == const0_rtx
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&& mode == GET_MODE (op0)
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&& nonzero_bits (op0, mode) == 1)
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{
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op0 = expand_compound_operation (op0);
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@ -4376,6 +4380,7 @@ combine_simplify_rtx (x, op0_mode, last, in_dest)
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else if (STORE_FLAG_VALUE == 1
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&& new_code == EQ && GET_MODE_CLASS (mode) == MODE_INT
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&& op1 == const0_rtx
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&& mode == GET_MODE (op0)
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&& (num_sign_bit_copies (op0, mode)
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== GET_MODE_BITSIZE (mode)))
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{
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@ -4396,6 +4401,7 @@ combine_simplify_rtx (x, op0_mode, last, in_dest)
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else if (STORE_FLAG_VALUE == -1
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&& new_code == NE && GET_MODE_CLASS (mode) == MODE_INT
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&& op1 == const0_rtx
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&& mode == GET_MODE (op0)
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&& nonzero_bits (op0, mode) == 1)
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{
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op0 = expand_compound_operation (op0);
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@ -4406,6 +4412,7 @@ combine_simplify_rtx (x, op0_mode, last, in_dest)
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else if (STORE_FLAG_VALUE == -1
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&& new_code == EQ && GET_MODE_CLASS (mode) == MODE_INT
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&& op1 == const0_rtx
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&& mode == GET_MODE (op0)
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&& (num_sign_bit_copies (op0, mode)
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== GET_MODE_BITSIZE (mode)))
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{
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@ -4418,6 +4425,7 @@ combine_simplify_rtx (x, op0_mode, last, in_dest)
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else if (STORE_FLAG_VALUE == -1
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&& new_code == EQ && GET_MODE_CLASS (mode) == MODE_INT
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&& op1 == const0_rtx
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&& mode == GET_MODE (op0)
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&& nonzero_bits (op0, mode) == 1)
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{
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op0 = expand_compound_operation (op0);
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132
gcc/machmode.def
132
gcc/machmode.def
@ -48,98 +48,100 @@ Boston, MA 02111-1307, USA. */
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MODE_VECTOR_INT, MODE_VECTOR_FLOAT - vector
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MODE_RANDOM - anything else
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Fourth argument is the relative size of the object, in bytes.
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Fourth argument is the relative size of the object, in bits,
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so we can have modes smaller than 1 byte.
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Fifth argument is the relative size of the object, in bytes.
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It is zero when the size is meaningless or not determined.
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A byte's size is determined by BITS_PER_UNIT in tm.h.
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Fifth arg is the relative size of subunits of the object.
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Sixth arg is the relative size of subunits of the object.
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It is same as the fourth argument except for complexes,
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since they are really made of two equal size subunits.
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Sixth arg is next wider natural mode of the same class.
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Seventh arg is next wider natural mode of the same class.
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0 if there is none. */
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/* VOIDmode is used when no mode needs to be specified,
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as for example on CONST_INT RTL expressions. */
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DEF_MACHMODE (VOIDmode, "VOID", MODE_RANDOM, 0, 0, VOIDmode)
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DEF_MACHMODE (VOIDmode, "VOID", MODE_RANDOM, 0, 0, 0, VOIDmode)
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DEF_MACHMODE (PQImode, "PQI", MODE_PARTIAL_INT, 1, 1, PHImode)
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DEF_MACHMODE (QImode, "QI", MODE_INT, 1, 1, HImode) /* int types */
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DEF_MACHMODE (PHImode, "PHI", MODE_PARTIAL_INT, 2, 2, PSImode)
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DEF_MACHMODE (HImode, "HI", MODE_INT, 2, 2, SImode)
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/* Pointers on some machines use this type to distinguish them from ints.
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Useful if a pointer is 4 bytes but has some bits that are not significant,
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so it is really not quite as wide as an integer. */
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DEF_MACHMODE (PSImode, "PSI", MODE_PARTIAL_INT, 4, 4, PDImode)
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DEF_MACHMODE (SImode, "SI", MODE_INT, 4, 4, DImode)
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DEF_MACHMODE (PDImode, "PDI", MODE_PARTIAL_INT, 8, 8, VOIDmode)
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DEF_MACHMODE (DImode, "DI", MODE_INT, 8, 8, TImode)
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DEF_MACHMODE (TImode, "TI", MODE_INT, 16, 16, OImode)
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DEF_MACHMODE (OImode, "OI", MODE_INT, 32, 32, VOIDmode)
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DEF_MACHMODE (BImode, "BI", MODE_INT, 1, 1, 1, QImode)
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DEF_MACHMODE (QImode, "QI", MODE_INT, 8, 1, 1, HImode)
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DEF_MACHMODE (HImode, "HI", MODE_INT, 16, 2, 2, SImode)
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DEF_MACHMODE (SImode, "SI", MODE_INT, 32, 4, 4, DImode)
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DEF_MACHMODE (DImode, "DI", MODE_INT, 64, 8, 8, TImode)
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DEF_MACHMODE (TImode, "TI", MODE_INT, 128, 16, 16, OImode)
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DEF_MACHMODE (OImode, "OI", MODE_INT, 256, 32, 32, VOIDmode)
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DEF_MACHMODE (QFmode, "QF", MODE_FLOAT, 1, 1, HFmode)
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DEF_MACHMODE (HFmode, "HF", MODE_FLOAT, 2, 2, TQFmode)
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DEF_MACHMODE (TQFmode, "TQF", MODE_FLOAT, 3, 3, SFmode) /* MIL-STD-1750A */
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DEF_MACHMODE (SFmode, "SF", MODE_FLOAT, 4, 4, DFmode)
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DEF_MACHMODE (DFmode, "DF", MODE_FLOAT, 8, 8, XFmode)
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DEF_MACHMODE (XFmode, "XF", MODE_FLOAT, 12, 12, TFmode) /* IEEE extended */
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DEF_MACHMODE (TFmode, "TF", MODE_FLOAT, 16, 16, VOIDmode)
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/* Pointers on some machines use these types to distinguish them from
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ints. Useful if a pointer is 4 bytes but has some bits that are
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not significant, so it is really not quite as wide as an integer. */
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DEF_MACHMODE (PQImode, "PQI", MODE_PARTIAL_INT, 8, 1, 1, PHImode)
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DEF_MACHMODE (PHImode, "PHI", MODE_PARTIAL_INT, 16, 2, 2, PSImode)
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DEF_MACHMODE (PSImode, "PSI", MODE_PARTIAL_INT, 32, 4, 4, PDImode)
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DEF_MACHMODE (PDImode, "PDI", MODE_PARTIAL_INT, 64, 8, 8, VOIDmode)
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DEF_MACHMODE (QFmode, "QF", MODE_FLOAT, 8, 1, 1, HFmode)
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DEF_MACHMODE (HFmode, "HF", MODE_FLOAT, 16, 2, 2, TQFmode)
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DEF_MACHMODE (TQFmode, "TQF", MODE_FLOAT, 24, 3, 3, SFmode) /* MIL-STD-1750A */
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DEF_MACHMODE (SFmode, "SF", MODE_FLOAT, 32, 4, 4, DFmode)
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DEF_MACHMODE (DFmode, "DF", MODE_FLOAT, 64, 8, 8, XFmode)
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DEF_MACHMODE (XFmode, "XF", MODE_FLOAT, 96, 12, 12, TFmode) /* IEEE extended */
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DEF_MACHMODE (TFmode, "TF", MODE_FLOAT, 128, 16, 16, VOIDmode)
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/* Complex modes. */
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DEF_MACHMODE (QCmode, "QC", MODE_COMPLEX_FLOAT, 2, 1, HCmode)
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DEF_MACHMODE (HCmode, "HC", MODE_COMPLEX_FLOAT, 4, 2, SCmode)
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DEF_MACHMODE (SCmode, "SC", MODE_COMPLEX_FLOAT, 8, 4, DCmode)
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DEF_MACHMODE (DCmode, "DC", MODE_COMPLEX_FLOAT, 16, 8, XCmode)
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DEF_MACHMODE (XCmode, "XC", MODE_COMPLEX_FLOAT, 24, 12, TCmode)
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DEF_MACHMODE (TCmode, "TC", MODE_COMPLEX_FLOAT, 32, 16, VOIDmode)
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DEF_MACHMODE (QCmode, "QC", MODE_COMPLEX_FLOAT, 16, 2, 1, HCmode)
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DEF_MACHMODE (HCmode, "HC", MODE_COMPLEX_FLOAT, 32, 4, 2, SCmode)
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DEF_MACHMODE (SCmode, "SC", MODE_COMPLEX_FLOAT, 64, 8, 4, DCmode)
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DEF_MACHMODE (DCmode, "DC", MODE_COMPLEX_FLOAT, 128, 16, 8, XCmode)
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DEF_MACHMODE (XCmode, "XC", MODE_COMPLEX_FLOAT, 192, 24, 12, TCmode)
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DEF_MACHMODE (TCmode, "TC", MODE_COMPLEX_FLOAT, 256, 32, 16, VOIDmode)
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DEF_MACHMODE (CQImode, "CQI", MODE_COMPLEX_INT, 2, 1, CHImode)
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DEF_MACHMODE (CHImode, "CHI", MODE_COMPLEX_INT, 4, 2, CSImode)
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DEF_MACHMODE (CSImode, "CSI", MODE_COMPLEX_INT, 8, 4, CDImode)
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DEF_MACHMODE (CDImode, "CDI", MODE_COMPLEX_INT, 16, 8, CTImode)
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DEF_MACHMODE (CTImode, "CTI", MODE_COMPLEX_INT, 32, 16, COImode)
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DEF_MACHMODE (COImode, "COI", MODE_COMPLEX_INT, 64, 32, VOIDmode)
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DEF_MACHMODE (CQImode, "CQI", MODE_COMPLEX_INT, 16, 2, 1, CHImode)
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DEF_MACHMODE (CHImode, "CHI", MODE_COMPLEX_INT, 32, 4, 2, CSImode)
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DEF_MACHMODE (CSImode, "CSI", MODE_COMPLEX_INT, 64, 8, 4, CDImode)
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DEF_MACHMODE (CDImode, "CDI", MODE_COMPLEX_INT, 128, 16, 8, CTImode)
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DEF_MACHMODE (CTImode, "CTI", MODE_COMPLEX_INT, 256, 32, 16, COImode)
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DEF_MACHMODE (COImode, "COI", MODE_COMPLEX_INT, 512, 64, 32, VOIDmode)
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/* Vector modes. */
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/* There are no V1xx vector modes. These are equivalent to normal non-vector
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modes. */
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DEF_MACHMODE (V2QImode, "V2QI", MODE_VECTOR_INT, 2, 1, VOIDmode)
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DEF_MACHMODE (V2HImode, "V2HI", MODE_VECTOR_INT, 4, 2, VOIDmode)
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DEF_MACHMODE (V2SImode, "V2SI", MODE_VECTOR_INT, 8, 4, VOIDmode)
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DEF_MACHMODE (V2DImode, "V2DI", MODE_VECTOR_INT, 16, 8, VOIDmode)
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/* There are no V1xx vector modes. These are equivalent to normal
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scalar modes. */
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DEF_MACHMODE (V2QImode, "V2QI", MODE_VECTOR_INT, 16, 2, 1, VOIDmode)
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DEF_MACHMODE (V2HImode, "V2HI", MODE_VECTOR_INT, 32, 4, 2, VOIDmode)
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DEF_MACHMODE (V2SImode, "V2SI", MODE_VECTOR_INT, 64, 8, 4, VOIDmode)
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DEF_MACHMODE (V2DImode, "V2DI", MODE_VECTOR_INT, 128, 16, 8, VOIDmode)
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DEF_MACHMODE (V4QImode, "V4QI", MODE_VECTOR_INT, 4, 1, VOIDmode)
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DEF_MACHMODE (V4HImode, "V4HI", MODE_VECTOR_INT, 8, 2, VOIDmode)
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DEF_MACHMODE (V4SImode, "V4SI", MODE_VECTOR_INT, 16, 4, VOIDmode)
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DEF_MACHMODE (V4DImode, "V4DI", MODE_VECTOR_INT, 32, 8, VOIDmode)
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DEF_MACHMODE (V4QImode, "V4QI", MODE_VECTOR_INT, 32, 4, 1, VOIDmode)
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DEF_MACHMODE (V4HImode, "V4HI", MODE_VECTOR_INT, 64, 8, 2, VOIDmode)
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DEF_MACHMODE (V4SImode, "V4SI", MODE_VECTOR_INT, 128, 16, 4, VOIDmode)
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DEF_MACHMODE (V4DImode, "V4DI", MODE_VECTOR_INT, 256, 32, 8, VOIDmode)
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DEF_MACHMODE (V8QImode, "V8QI", MODE_VECTOR_INT, 8, 1, VOIDmode)
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DEF_MACHMODE (V8HImode, "V8HI", MODE_VECTOR_INT, 16, 2, VOIDmode)
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DEF_MACHMODE (V8SImode, "V8SI", MODE_VECTOR_INT, 32, 4, VOIDmode)
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DEF_MACHMODE (V8DImode, "V8DI", MODE_VECTOR_INT, 64, 8, VOIDmode)
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DEF_MACHMODE (V8QImode, "V8QI", MODE_VECTOR_INT, 64, 8, 1, VOIDmode)
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DEF_MACHMODE (V8HImode, "V8HI", MODE_VECTOR_INT, 128, 16, 2, VOIDmode)
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DEF_MACHMODE (V8SImode, "V8SI", MODE_VECTOR_INT, 256, 32, 4, VOIDmode)
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DEF_MACHMODE (V8DImode, "V8DI", MODE_VECTOR_INT, 512, 64, 8, VOIDmode)
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DEF_MACHMODE (V2SFmode, "V2SF", MODE_VECTOR_FLOAT, 8, 4, VOIDmode)
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DEF_MACHMODE (V2DFmode, "V2DF", MODE_VECTOR_FLOAT, 16, 8, VOIDmode)
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DEF_MACHMODE (V2SFmode, "V2SF", MODE_VECTOR_FLOAT, 64, 8, 4, VOIDmode)
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DEF_MACHMODE (V2DFmode, "V2DF", MODE_VECTOR_FLOAT, 128, 16, 8, VOIDmode)
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DEF_MACHMODE (V4SFmode, "V4SF", MODE_VECTOR_FLOAT, 16, 4, VOIDmode)
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DEF_MACHMODE (V4DFmode, "V4DF", MODE_VECTOR_FLOAT, 32, 8, VOIDmode)
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DEF_MACHMODE (V4SFmode, "V4SF", MODE_VECTOR_FLOAT, 128, 16, 4, VOIDmode)
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DEF_MACHMODE (V4DFmode, "V4DF", MODE_VECTOR_FLOAT, 256, 32, 8, VOIDmode)
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DEF_MACHMODE (V8SFmode, "V8SF", MODE_VECTOR_FLOAT, 32, 4, VOIDmode)
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DEF_MACHMODE (V8DFmode, "V8DF", MODE_VECTOR_FLOAT, 64, 8, VOIDmode)
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DEF_MACHMODE (V8SFmode, "V8SF", MODE_VECTOR_FLOAT, 256, 32, 4, VOIDmode)
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DEF_MACHMODE (V8DFmode, "V8DF", MODE_VECTOR_FLOAT, 512, 64, 8, VOIDmode)
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/* BLKmode is used for structures, arrays, etc.
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that fit no more specific mode. */
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DEF_MACHMODE (BLKmode, "BLK", MODE_RANDOM, 0, 0, VOIDmode)
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DEF_MACHMODE (BLKmode, "BLK", MODE_RANDOM, 0, 0, 0, VOIDmode)
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/* The modes for representing the condition codes come last. CCmode is
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always defined. Additional modes for the condition code can be specified
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in the EXTRA_CC_MODES macro.
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All MODE_CC modes are the same width as SImode and have VOIDmode as their
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next wider mode.
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*/
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/* The modes for representing the condition codes come last. CCmode
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is always defined. Additional modes for the condition code can be
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specified in the EXTRA_CC_MODES macro. All MODE_CC modes are the
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same width as SImode and have VOIDmode as their next wider mode. */
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#define CC(E, M) DEF_MACHMODE (E, M, MODE_CC, 4, 4, VOIDmode)
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#define CC(E, M) DEF_MACHMODE (E, M, MODE_CC, 32, 4, 4, VOIDmode)
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CC (CCmode, "CC")
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@ -24,7 +24,7 @@ Boston, MA 02111-1307, USA. */
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/* Make an enum class that gives all the machine modes. */
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#define DEF_MACHMODE(SYM, NAME, TYPE, SIZE, UNIT, WIDER) SYM,
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#define DEF_MACHMODE(SYM, NAME, TYPE, BITSIZE, SIZE, UNIT, WIDER) SYM,
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enum machine_mode {
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#include "machmode.def"
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@ -93,7 +93,8 @@ extern const unsigned int mode_unit_size[];
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/* Get the size in bits of an object of mode MODE. */
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#define GET_MODE_BITSIZE(MODE) (BITS_PER_UNIT * mode_size[(int) (MODE)])
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extern const unsigned int mode_bitsize[];
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#define GET_MODE_BITSIZE(MODE) (mode_bitsize[(int) (MODE)])
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#ifdef HOST_WIDE_INT
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35
gcc/rtl.c
35
gcc/rtl.c
@ -128,7 +128,7 @@ const char * const rtx_name[] = {
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/* Indexed by machine mode, gives the name of that machine mode.
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This name does not include the letters "mode". */
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#define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) NAME,
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#define DEF_MACHMODE(SYM, NAME, CLASS, BITSIZE, SIZE, UNIT, WIDER) NAME,
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const char * const mode_name[(int) MAX_MACHINE_MODE + 1] = {
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#include "machmode.def"
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@ -139,10 +139,9 @@ const char * const mode_name[(int) MAX_MACHINE_MODE + 1] = {
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#undef DEF_MACHMODE
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/* Indexed by machine mode, gives the length of the mode, in bytes.
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GET_MODE_CLASS uses this. */
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/* Indexed by machine mode, gives the class mode for GET_MODE_CLASS. */
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#define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) CLASS,
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#define DEF_MACHMODE(SYM, NAME, CLASS, BITSIZE, SIZE, UNIT, WIDER) CLASS,
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const enum mode_class mode_class[(int) MAX_MACHINE_MODE] = {
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#include "machmode.def"
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@ -150,10 +149,21 @@ const enum mode_class mode_class[(int) MAX_MACHINE_MODE] = {
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#undef DEF_MACHMODE
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/* Indexed by machine mode, gives the length of the mode, in bits.
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GET_MODE_BITSIZE uses this. */
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#define DEF_MACHMODE(SYM, NAME, CLASS, BITSIZE, SIZE, UNIT, WIDER) BITSIZE,
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const unsigned int mode_bitsize[(int) MAX_MACHINE_MODE] = {
|
||||
#include "machmode.def"
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};
|
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||||
#undef DEF_MACHMODE
|
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/* Indexed by machine mode, gives the length of the mode, in bytes.
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||||
GET_MODE_SIZE uses this. */
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||||
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#define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) SIZE,
|
||||
#define DEF_MACHMODE(SYM, NAME, CLASS, BITSIZE, SIZE, UNIT, WIDER) SIZE,
|
||||
|
||||
const unsigned int mode_size[(int) MAX_MACHINE_MODE] = {
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||||
#include "machmode.def"
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||||
@ -164,7 +174,7 @@ const unsigned int mode_size[(int) MAX_MACHINE_MODE] = {
|
||||
/* Indexed by machine mode, gives the length of the mode's subunit.
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||||
GET_MODE_UNIT_SIZE uses this. */
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||||
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#define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) UNIT,
|
||||
#define DEF_MACHMODE(SYM, NAME, CLASS, BITSIZE, SIZE, UNIT, WIDER) UNIT,
|
||||
|
||||
const unsigned int mode_unit_size[(int) MAX_MACHINE_MODE] = {
|
||||
#include "machmode.def" /* machine modes are documented here */
|
||||
@ -176,7 +186,7 @@ const unsigned int mode_unit_size[(int) MAX_MACHINE_MODE] = {
|
||||
(QI -> HI -> SI -> DI, etc.) Widening multiply instructions
|
||||
use this. */
|
||||
|
||||
#define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) \
|
||||
#define DEF_MACHMODE(SYM, NAME, CLASS, BITSIZE, SIZE, UNIT, WIDER) \
|
||||
(unsigned char) WIDER,
|
||||
|
||||
const unsigned char mode_wider_mode[(int) MAX_MACHINE_MODE] = {
|
||||
@ -185,8 +195,8 @@ const unsigned char mode_wider_mode[(int) MAX_MACHINE_MODE] = {
|
||||
|
||||
#undef DEF_MACHMODE
|
||||
|
||||
#define DEF_MACHMODE(SYM, NAME, CLASS, SIZE, UNIT, WIDER) \
|
||||
((SIZE) * BITS_PER_UNIT >= HOST_BITS_PER_WIDE_INT) ? ~(unsigned HOST_WIDE_INT)0 : ((unsigned HOST_WIDE_INT) 1 << (SIZE) * BITS_PER_UNIT) - 1,
|
||||
#define DEF_MACHMODE(SYM, NAME, CLASS, BITSIZE, SIZE, UNIT, WIDER) \
|
||||
((BITSIZE) >= HOST_BITS_PER_WIDE_INT) ? ~(unsigned HOST_WIDE_INT)0 : ((unsigned HOST_WIDE_INT) 1 << (BITSIZE)) - 1,
|
||||
|
||||
/* Indexed by machine mode, gives mask of significant bits in mode. */
|
||||
|
||||
@ -196,7 +206,12 @@ const unsigned HOST_WIDE_INT mode_mask_array[(int) MAX_MACHINE_MODE] = {
|
||||
|
||||
/* Indexed by mode class, gives the narrowest mode for each class.
|
||||
The Q modes are always of width 1 (2 for complex) - it is impossible
|
||||
for any mode to be narrower. */
|
||||
for any mode to be narrower.
|
||||
|
||||
Note that we use QImode instead of BImode for MODE_INT, since
|
||||
otherwise the middle end will try to use it for bitfields in
|
||||
structures and the like, which we do not want. Only the target
|
||||
md file should generate BImode widgets. */
|
||||
|
||||
const enum machine_mode class_narrowest_mode[(int) MAX_MODE_CLASS] = {
|
||||
/* MODE_RANDOM */ VOIDmode,
|
||||
|
||||
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Reference in New Issue
Block a user