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2007-xx-xx Richard Sandiford <rsandifo@nildram.co.uk> 

Richard Guenther <rguenther@suse.de>

gcc/
	* df.h (df_mw_hardreg): Turn df_ref_type and df_ref_flags
	into bitfields.
	(df_ref): Likewise.  Put regno with other integer fields.

From-SVN: r126971
This commit is contained in:
Richard Sandiford 2007-07-27 07:16:15 +00:00 committed by Richard Sandiford
parent 6f5c15202d
commit ab34041dfe
2 changed files with 19 additions and 5 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2007-07-27 Richard Sandiford <rsandifo@nildram.co.uk>
* df.h (df_mw_hardreg): Turn df_ref_type and df_ref_flags
into bitfields.
(df_ref): Likewise. Put regno with other integer fields.
2007-07-27 Richard Sandiford <rsandifo@nildram.co.uk>
* df.h (df_mw_hardreg): Remove "loc" field.

18
gcc/df.h
View File

@ -311,8 +311,12 @@ struct dataflow
struct df_mw_hardreg
{
rtx mw_reg; /* The multiword hardreg. */
enum df_ref_type type; /* Used to see if the ref is read or write. */
enum df_ref_flags flags; /* Various flags. */
/* These two bitfields are intentially oversized, in the hope that
accesses to 16-bit fields will usually be quicker. */
ENUM_BITFIELD(df_ref_type) type : 16;
/* Used to see if the ref is read or write. */
ENUM_BITFIELD(df_ref_flags) flags : 16;
/* Various flags. */
unsigned int start_regno; /* First word of the multi word subreg. */
unsigned int end_regno; /* Last word of the multi word subreg. */
unsigned int mw_order; /* Same as df_ref.ref_order. */
@ -341,7 +345,6 @@ struct df_insn_info
struct df_ref
{
rtx reg; /* The register referenced. */
unsigned int regno; /* The register number referenced. */
basic_block bb; /* Basic block containing the instruction. */
/* Insn containing ref. This will be null if this is an artificial
@ -356,8 +359,13 @@ struct df_ref
used to totally order the refs in an insn. */
unsigned int ref_order;
enum df_ref_type type; /* Type of ref. */
enum df_ref_flags flags; /* Various flags. */
unsigned int regno; /* The register number referenced. */
/* These two bitfields are intentially oversized, in the hope that
accesses to 16-bit fields will usually be quicker. */
ENUM_BITFIELD(df_ref_type) type : 16;
/* Type of ref. */
ENUM_BITFIELD(df_ref_flags) flags : 16;
/* Various flags. */
/* For each regno, there are three chains of refs, one for the uses,
the eq_uses and the defs. These chains go thru the refs