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* expr.c (expr): Simplify foo-foo here. 

(clean_up_expression): Remove O_subtract code.
This commit is contained in:
Alan Modra 2002-09-20 00:58:39 +00:00
parent dea9781227
commit f6cf69d700
2 changed files with 19 additions and 31 deletions
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4
gas/ChangeLog
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@ -1,9 +1,13 @@
2002-09-20 Alan Modra <amodra@bigpond.net.au>
* expr.c (expr): Simplify foo-foo here.
(clean_up_expression): Remove O_subtract code.
* write.h (struct fix): Add fx_dot_value.
(dot_value): Declare.
* write.c (dot_value): New var.
(fix_new_internal): Save dot_value as fx_dot_value.
(fixup_segment): Adjust fx_offset using fx_dot_value.
* expr.c (expr): Update dot_value.
2002-09-19 Jakub Jelinek <jakub@redhat.com>

20
gas/expr.c
View File

@ -1347,8 +1347,6 @@ operand (expressionP)
Elsewise we waste time special-case testing. Sigh. Ditto SEG_ABSENT.
Out: expressionS may have been modified:
'foo-foo' symbol references cancelled to 0, which changes X_op
from O_subtract to O_constant.
Unused fields zeroed to help expr (). */
static void
@ -1371,21 +1369,6 @@ clean_up_expression (expressionP)
case O_bit_not:
expressionP->X_op_symbol = NULL;
break;
case O_subtract:
if (expressionP->X_op_symbol == expressionP->X_add_symbol
|| ((symbol_get_frag (expressionP->X_op_symbol)
== symbol_get_frag (expressionP->X_add_symbol))
&& SEG_NORMAL (S_GET_SEGMENT (expressionP->X_add_symbol))))
{
addressT diff = (S_GET_VALUE (expressionP->X_add_symbol)
- S_GET_VALUE (expressionP->X_op_symbol));
expressionP->X_op = O_constant;
expressionP->X_add_symbol = NULL;
expressionP->X_op_symbol = NULL;
expressionP->X_add_number += diff;
}
break;
default:
break;
}
@ -1751,7 +1734,8 @@ expr (rankarg, resultP)
&& resultP->X_op == O_symbol
&& (symbol_get_frag (right.X_add_symbol)
== symbol_get_frag (resultP->X_add_symbol))
&& SEG_NORMAL (rightseg))
&& (SEG_NORMAL (rightseg)
|| right.X_add_symbol == resultP->X_add_symbol))
{
resultP->X_add_number -= right.X_add_number;
resultP->X_add_number += (S_GET_VALUE (resultP->X_add_symbol)