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var-tracking.c (insn_stack_adjust_offset_pre_post): If insn has a REG_FRAME_RELATED_EXPR note...

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* var-tracking.c (insn_stack_adjust_offset_pre_post): If insn has a
	REG_FRAME_RELATED_EXPR note, examine the pattern from the note instead
	of from insn.

From-SVN: r141272
This commit is contained in:
Bob Wilson 2008-10-21 18:06:12 +00:00 committed by Bob Wilson
parent cd6d4007aa
commit 7d40743390
2 changed files with 23 additions and 8 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2008-10-21 Bob Wilson <bob.wilson@acm.org>
* var-tracking.c (insn_stack_adjust_offset_pre_post): If insn has a
REG_FRAME_RELATED_EXPR note, examine the pattern from the note instead
of from insn.
2008-10-21 Adam Nemet <anemet@caviumnetworks.com>
PR middle-end/37669

25
gcc/var-tracking.c
View File

@ -466,22 +466,31 @@ static void
insn_stack_adjust_offset_pre_post (rtx insn, HOST_WIDE_INT *pre,
HOST_WIDE_INT *post)
{
rtx pattern;
*pre = 0;
*post = 0;
if (GET_CODE (PATTERN (insn)) == SET)
stack_adjust_offset_pre_post (PATTERN (insn), pre, post);
else if (GET_CODE (PATTERN (insn)) == PARALLEL
|| GET_CODE (PATTERN (insn)) == SEQUENCE)
pattern = PATTERN (insn);
if (RTX_FRAME_RELATED_P (insn))
{
rtx expr = find_reg_note (insn, REG_FRAME_RELATED_EXPR, NULL_RTX);
if (expr)
pattern = XEXP (expr, 0);
}
if (GET_CODE (pattern) == SET)
stack_adjust_offset_pre_post (pattern, pre, post);
else if (GET_CODE (pattern) == PARALLEL
|| GET_CODE (pattern) == SEQUENCE)
{
int i;
/* There may be stack adjustments inside compound insns. Search
for them. */
for ( i = XVECLEN (PATTERN (insn), 0) - 1; i >= 0; i--)
if (GET_CODE (XVECEXP (PATTERN (insn), 0, i)) == SET)
stack_adjust_offset_pre_post (XVECEXP (PATTERN (insn), 0, i),
pre, post);
for ( i = XVECLEN (pattern, 0) - 1; i >= 0; i--)
if (GET_CODE (XVECEXP (pattern, 0, i)) == SET)
stack_adjust_offset_pre_post (XVECEXP (pattern, 0, i), pre, post);
}
}