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dwarf2out.c (stack_adjust_offset): Add support for POST_INC, POST_DEC, and POST_MODIFY.

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* dwarf2out.c (stack_adjust_offset): Add support for POST_INC,
	POST_DEC, and POST_MODIFY.

From-SVN: r50121
This commit is contained in:
Andrew MacLeod 2002-02-28 03:09:41 +00:00 committed by Andrew Macleod
parent d627547118
commit f472fa2949
2 changed files with 40 additions and 16 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2002-02-27 Andrew MacLeod <amacleod@redhat.com>
* dwarf2out.c (stack_adjust_offset): Add support for POST_INC,
POST_DEC, and POST_MODIFY.
2002-02-27 Zack Weinberg <zack@codesourcery.com>
* c-typeck.c (digest_init): Remove unused parameter; all

51
gcc/dwarf2out.c
View File

@ -950,6 +950,8 @@ stack_adjust_offset (pattern)
return 0;
offset = INTVAL (XEXP (src, 1));
if (code == PLUS)
offset = -offset;
}
else if (GET_CODE (dest) == MEM)
{
@ -957,30 +959,47 @@ stack_adjust_offset (pattern)
src = XEXP (dest, 0);
code = GET_CODE (src);
if ((code != PRE_DEC && code != PRE_INC && code != PRE_MODIFY)
|| XEXP (src, 0) != stack_pointer_rtx)
return 0;
switch (code)
{
case PRE_MODIFY:
case POST_MODIFY:
if (XEXP (src, 0) == stack_pointer_rtx)
{
rtx val = XEXP (XEXP (src, 1), 1);
/* We handle only adjustments by constant amount. */
if (GET_CODE (XEXP (src, 1)) != PLUS ||
GET_CODE (val) != CONST_INT)
abort();
offset = -INTVAL (val);
break;
}
return 0;
if (code == PRE_MODIFY)
{
rtx val = XEXP (XEXP (src, 1), 1);
case PRE_DEC:
case POST_DEC:
if (XEXP (src, 0) == stack_pointer_rtx)
{
offset = GET_MODE_SIZE (GET_MODE (dest));
break;
}
return 0;
/* We handle only adjustments by constant amount. */
if (GET_CODE (XEXP (src, 1)) != PLUS ||
GET_CODE (val) != CONST_INT)
abort ();
case PRE_INC:
case POST_INC:
if (XEXP (src, 0) == stack_pointer_rtx)
{
offset = -GET_MODE_SIZE (GET_MODE (dest));
break;
}
return 0;
offset = -INTVAL (val);
default:
return 0;
}
else
offset = GET_MODE_SIZE (GET_MODE (dest));
}
else
return 0;
if (code == PLUS || code == PRE_INC)
offset = -offset;
return offset;
}