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next_cc0_user and prev_cc0_setter scaffolding 

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

	* rtl.h (next_cc0_user): Strengthen return type from rtx to
	rtx_insn *.
	(prev_cc0_setter): Likewise.

	* emit-rtl.c (next_cc0_user): Strengthen return type from rtx to
	rtx_insn *, adding checked casts for now as necessary.
	(prev_cc0_setter): Likewise.

From-SVN: r214196
This commit is contained in:
David Malcolm 2014-08-19 21:08:18 +00:00 committed by David Malcolm
parent f3222b793d
commit 75b46023e7
3 changed files with 18 additions and 8 deletions
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10
gcc/ChangeLog
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@ -1,3 +1,13 @@
2014-08-19 David Malcolm <dmalcolm@redhat.com>
* rtl.h (next_cc0_user): Strengthen return type from rtx to
rtx_insn *.
(prev_cc0_setter): Likewise.
* emit-rtl.c (next_cc0_user): Strengthen return type from rtx to
rtx_insn *, adding checked casts for now as necessary.
(prev_cc0_setter): Likewise.
2014-08-19 David Malcolm <dmalcolm@redhat.com>
* expr.h (emit_move_insn): Strengthen return type from rtx to

12
gcc/emit-rtl.c
View File

@ -3450,20 +3450,20 @@ prev_active_insn (rtx insn)
Return 0 if we can't find the insn. */
rtx
rtx_insn *
next_cc0_user (rtx insn)
{
rtx note = find_reg_note (insn, REG_CC_USER, NULL_RTX);
if (note)
return XEXP (note, 0);
return safe_as_a <rtx_insn *> (XEXP (note, 0));
insn = next_nonnote_insn (insn);
if (insn && NONJUMP_INSN_P (insn) && GET_CODE (PATTERN (insn)) == SEQUENCE)
insn = XVECEXP (PATTERN (insn), 0, 0);
if (insn && INSN_P (insn) && reg_mentioned_p (cc0_rtx, PATTERN (insn)))
return insn;
return safe_as_a <rtx_insn *> (insn);
return 0;
}
@ -3471,18 +3471,18 @@ next_cc0_user (rtx insn)
/* Find the insn that set CC0 for INSN. Unless INSN has a REG_CC_SETTER
note, it is the previous insn. */
rtx
rtx_insn *
prev_cc0_setter (rtx insn)
{
rtx note = find_reg_note (insn, REG_CC_SETTER, NULL_RTX);
if (note)
return XEXP (note, 0);
return safe_as_a <rtx_insn *> (XEXP (note, 0));
insn = prev_nonnote_insn (insn);
gcc_assert (sets_cc0_p (PATTERN (insn)));
return insn;
return safe_as_a <rtx_insn *> (insn);
}
#endif

4
gcc/rtl.h
View File

@ -2440,8 +2440,8 @@ extern rtx_insn *next_real_insn (rtx);
extern rtx_insn *prev_active_insn (rtx);
extern rtx_insn *next_active_insn (rtx);
extern int active_insn_p (const_rtx);
extern rtx next_cc0_user (rtx);
extern rtx prev_cc0_setter (rtx);
extern rtx_insn *next_cc0_user (rtx);
extern rtx_insn *prev_cc0_setter (rtx);
/* In emit-rtl.c */
extern int insn_line (const_rtx);