mirror/gcc
2
0
Fork 0
mirror of git://gcc.gnu.org/git/gcc.git synced 2025-02-15 04:39:31 +08:00
Code Issues Packages Projects Releases Wiki Activity

pa.c (forward_branch_p): Return bool type.

Browse Source 
* pa.c (forward_branch_p): Return bool type.  Use instruction addresses
	when available.  Assert that INSN has a jump label.
	(pa_adjust_insn_length): Don't call forward_branch_p if INSN doesn't
	have a jump label.

From-SVN: r149141
This commit is contained in:
John David Anglin 2009-07-01 15:47:33 +00:00 committed by John David Anglin
parent 14c41b9bb9
commit 3232e9d8b8
2 changed files with 22 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2009-07-01 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
* pa.c (forward_branch_p): Return bool type. Use instruction addresses
when available. Assert that INSN has a jump label.
(pa_adjust_insn_length): Don't call forward_branch_p if INSN doesn't
have a jump label.
2009-07-01 Richard Guenther <rguenther@suse.de>
PR tree-optimization/19831

23
gcc/config/pa/pa.c
View File

@ -93,7 +93,7 @@ static inline rtx force_mode (enum machine_mode, rtx);
static void pa_reorg (void);
static void pa_combine_instructions (void);
static int pa_can_combine_p (rtx, rtx, rtx, int, rtx, rtx, rtx);
static int forward_branch_p (rtx);
static bool forward_branch_p (rtx);
static void compute_zdepwi_operands (unsigned HOST_WIDE_INT, unsigned *);
static int compute_movmem_length (rtx);
static int compute_clrmem_length (rtx);
@ -4751,6 +4751,7 @@ pa_adjust_insn_length (rtx insn, int length)
/* Adjust a short backwards conditional with an unfilled delay slot. */
if (GET_CODE (pat) == SET
&& length == 4
&& JUMP_LABEL (insn) != NULL_RTX
&& ! forward_branch_p (insn))
return 4;
else if (GET_CODE (pat) == PARALLEL
@ -8578,22 +8579,28 @@ non_hard_reg_operand (rtx op, enum machine_mode mode ATTRIBUTE_UNUSED)
return ! (GET_CODE (op) == REG && REGNO (op) < FIRST_PSEUDO_REGISTER);
}
/* Return 1 if INSN branches forward. Should be using insn_addresses
to avoid walking through all the insns... */
static int
/* Return TRUE if INSN branches forward. */
static bool
forward_branch_p (rtx insn)
{
rtx label = JUMP_LABEL (insn);
rtx lab = JUMP_LABEL (insn);
/* The INSN must have a jump label. */
gcc_assert (lab != NULL_RTX);
if (INSN_ADDRESSES_SET_P ())
return INSN_ADDRESSES (INSN_UID (lab)) > INSN_ADDRESSES (INSN_UID (insn));
while (insn)
{
if (insn == label)
break;
if (insn == lab)
return true;
else
insn = NEXT_INSN (insn);
}
return (insn == label);
return false;
}
/* Return 1 if OP is an equality comparison, else return 0. */