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varasm.c (struct rtx_const): Change type of un.addr member to struct holding an additional 'symbol' member.

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* varasm.c (struct rtx_const): Change type of un.addr member
	to struct holding an additional 'symbol' member.
	(decode_rtx_const): Re-enable optimization to count SYMBOL_REFs
	with equal string addresses as equal.
	(simplify_subtraction): Adapt to struct rtx_const change.

From-SVN: r64406
This commit is contained in:
Ulrich Weigand 2003-03-15 16:30:35 +00:00 committed by Ulrich Weigand
parent af6fd53f5a
commit 2436a91b34
2 changed files with 17 additions and 5 deletions
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8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
2003-03-15 Ulrich Weigand <uweigand@de.ibm.com>
* varasm.c (struct rtx_const): Change type of un.addr member
to struct holding an additional 'symbol' member.
(decode_rtx_const): Re-enable optimization to count SYMBOL_REFs
with equal string addresses as equal.
(simplify_subtraction): Adapt to struct rtx_const change.
2003-03-15 Neil Booth <neil@daikokuya.co.uk>
* fix-header.c (read_scan_file): Read main file before handling -D.

14
gcc/varasm.c
View File

@ -2115,7 +2115,11 @@ struct rtx_const GTY(())
ENUM_BITFIELD(machine_mode) mode : 16;
union rtx_const_un {
REAL_VALUE_TYPE GTY ((tag ("4"))) du;
struct addr_const GTY ((tag ("1"))) addr;
struct rtx_const_u_addr {
rtx base;
const char *symbol;
HOST_WIDE_INT offset;
} GTY ((tag ("1"))) addr;
struct rtx_const_u_di {
HOST_WIDE_INT high;
HOST_WIDE_INT low;
@ -3045,13 +3049,12 @@ decode_rtx_const (mode, x, value)
if (value->kind >= RTX_INT && value->un.addr.base != 0)
switch (GET_CODE (value->un.addr.base))
{
#if 0
case SYMBOL_REF:
/* Use the string's address, not the SYMBOL_REF's address,
for the sake of addresses of library routines. */
value->un.addr.base = (rtx) XSTR (value->un.addr.base, 0);
value->un.addr.symbol = XSTR (value->un.addr.base, 0);
value->un.addr.base = NULL_RTX;
break;
#endif
case LABEL_REF:
/* For a LABEL_REF, compare labels. */
@ -3076,7 +3079,8 @@ simplify_subtraction (x)
if (val0.kind >= RTX_INT
&& val0.kind == val1.kind
&& val0.un.addr.base == val1.un.addr.base)
&& val0.un.addr.base == val1.un.addr.base
&& val0.un.addr.symbol == val1.un.addr.symbol)
return GEN_INT (val0.un.addr.offset - val1.un.addr.offset);
return x;