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Replace BB_HEAD et al macros with functions

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gcc/
2014-08-19  David Malcolm  <dmalcolm@redhat.com>

	* basic-block.h (BB_HEAD): Convert to a function.  Strengthen the
	return type from rtx to rtx_insn *.
	(BB_END): Likewise.
	(BB_HEADER): Likewise.
	(BB_FOOTER): Likewise.
	(SET_BB_HEAD): Convert to a function.
	(SET_BB_END): Likewise.
	(SET_BB_HEADER): Likewise.
	(SET_BB_FOOTER): Likewise.

	* cfgrtl.c (BB_HEAD): New function, from macro of same name.
	Strengthen the return type from rtx to rtx_insn *.  For now, this
	is done by adding a checked cast, but this will eventually
	become a field lookup.
	(BB_END): Likewise.
	(BB_HEADER): Likewise.
	(BB_FOOTER): Likewise.
	(SET_BB_HEAD): New function, from macro of same name.  This is
	intended for use as an lvalue, and so returns an rtx& to allow
	in-place modification.
	(SET_BB_END): Likewise.
	(SET_BB_HEADER): Likewise.
	(SET_BB_FOOTER): Likewise.

From-SVN: r214126
This commit is contained in:
David Malcolm 2014-08-19 00:26:56 +00:00 committed by David Malcolm
parent a140b66ba7
commit ef0fe50308
3 changed files with 101 additions and 11 deletions
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26
gcc/ChangeLog
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@ -1,3 +1,29 @@
2014-08-19 David Malcolm <dmalcolm@redhat.com>
* basic-block.h (BB_HEAD): Convert to a function. Strengthen the
return type from rtx to rtx_insn *.
(BB_END): Likewise.
(BB_HEADER): Likewise.
(BB_FOOTER): Likewise.
(SET_BB_HEAD): Convert to a function.
(SET_BB_END): Likewise.
(SET_BB_HEADER): Likewise.
(SET_BB_FOOTER): Likewise.
* cfgrtl.c (BB_HEAD): New function, from macro of same name.
Strengthen the return type from rtx to rtx_insn *. For now, this
is done by adding a checked cast, but this will eventually
become a field lookup.
(BB_END): Likewise.
(BB_HEADER): Likewise.
(BB_FOOTER): Likewise.
(SET_BB_HEAD): New function, from macro of same name. This is
intended for use as an lvalue, and so returns an rtx& to allow
in-place modification.
(SET_BB_END): Likewise.
(SET_BB_HEADER): Likewise.
(SET_BB_FOOTER): Likewise.
2014-08-18 David Malcolm <dmalcolm@redhat.com>
* basic-block.h (BB_HEAD): Split macro in two: the existing one,

26
gcc/basic-block.h
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@ -368,17 +368,21 @@ struct GTY(()) control_flow_graph {
/* Stuff for recording basic block info. */
/* These macros are currently split into two:
one suitable for reading, and for writing.
These will become functions in a follow-up patch. */
#define BB_HEAD(B) (((const_basic_block)B)->il.x.head_)
#define SET_BB_HEAD(B) (B)->il.x.head_
#define BB_END(B) (((const rtl_bb_info *)(B)->il.x.rtl)->end_)
#define SET_BB_END(B) (B)->il.x.rtl->end_
#define BB_HEADER(B) (((const rtl_bb_info *)(B)->il.x.rtl)->header_)
#define SET_BB_HEADER(B) (B)->il.x.rtl->header_
#define BB_FOOTER(B) (((const rtl_bb_info *)(B)->il.x.rtl)->footer_)
#define SET_BB_FOOTER(B) (B)->il.x.rtl->footer_
/* For now, these will be functions (so that they can include checked casts
to rtx_insn. Once the underlying fields are converted from rtx
to rtx_insn, these can be converted back to macros. */
extern rtx_insn *BB_HEAD (const_basic_block bb);
extern rtx& SET_BB_HEAD (basic_block bb);
extern rtx_insn *BB_END (const_basic_block bb);
extern rtx& SET_BB_END (basic_block bb);
extern rtx_insn *BB_HEADER (const_basic_block bb);
extern rtx& SET_BB_HEADER (basic_block bb);
extern rtx_insn *BB_FOOTER (const_basic_block bb);
extern rtx& SET_BB_FOOTER (basic_block bb);
/* Special block numbers [markers] for entry and exit.
Neither of them is supposed to hold actual statements. */

60
gcc/cfgrtl.c
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@ -5091,4 +5091,64 @@ struct cfg_hooks cfg_layout_rtl_cfg_hooks = {
rtl_account_profile_record,
};
/* BB_HEAD as an rvalue. */
rtx_insn *BB_HEAD (const_basic_block bb)
{
rtx insn = bb->il.x.head_;
return safe_as_a <rtx_insn *> (insn);
}
/* BB_HEAD for use as an lvalue. */
rtx& SET_BB_HEAD (basic_block bb)
{
return bb->il.x.head_;
}
/* BB_END as an rvalue. */
rtx_insn *BB_END (const_basic_block bb)
{
rtx insn = bb->il.x.rtl->end_;
return safe_as_a <rtx_insn *> (insn);
}
/* BB_END as an lvalue. */
rtx& SET_BB_END (basic_block bb)
{
return bb->il.x.rtl->end_;
}
/* BB_HEADER as an rvalue. */
rtx_insn *BB_HEADER (const_basic_block bb)
{
rtx insn = bb->il.x.rtl->header_;
return safe_as_a <rtx_insn *> (insn);
}
/* BB_HEADER as an lvalue. */
rtx& SET_BB_HEADER (basic_block bb)
{
return bb->il.x.rtl->header_;
}
/* BB_FOOTER as an rvalue. */
rtx_insn *BB_FOOTER (const_basic_block bb)
{
rtx insn = bb->il.x.rtl->footer_;
return safe_as_a <rtx_insn *> (insn);
}
/* BB_FOOTER as an lvalue. */
rtx& SET_BB_FOOTER (basic_block bb)
{
return bb->il.x.rtl->footer_;
}
#include "gt-cfgrtl.h"