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2002-02-08 Chris Demetriou <cgd@broadcom.com>

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* config/tc-mips.c (IS_SEXT_32BIT_NUM): New macro to
        determine if a number is a sign-extended 32-bit number.
        (load_register): Use IS_SEXT_32BIT_NUM.
        (macro): Check if load/store macro handling is using a
        constant 32-bit address on 64-bit address systems, and if
        so optimize the generation of that address.
This commit is contained in:
Chris Demetriou 2002-02-08 22:25:36 +00:00
parent f687139811
commit 6373ee5479
2 changed files with 25 additions and 4 deletions
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9
gas/ChangeLog
View File

@ -1,3 +1,12 @@
2002-02-08 Chris Demetriou <cgd@broadcom.com>
* config/tc-mips.c (IS_SEXT_32BIT_NUM): New macro to
determine if a number is a sign-extended 32-bit number.
(load_register): Use IS_SEXT_32BIT_NUM.
(macro): Check if load/store macro handling is using a
constant 32-bit address on 64-bit address systems, and if
so optimize the generation of that address.
2002-02-08 Richard Henderson <rth@redhat.com>
* config/tc-alpha.c (alpha_force_relocation): Don't assert that

20
gas/config/tc-mips.c
View File

@ -3353,6 +3353,11 @@ check_absolute_expr (ip, ex)
? 1 \
: 0)
/* Is the given value a sign-extended 32-bit value? */
#define IS_SEXT_32BIT_NUM(x) \
(((x) &~ (offsetT) 0x7fffffff) == 0 \
|| (((x) &~ (offsetT) 0x7fffffff) == ~ (offsetT) 0x7fffffff))
/* load_register()
* This routine generates the least number of instructions neccessary to load
* an absolute expression value into a register.
@ -3392,9 +3397,7 @@ load_register (counter, reg, ep, dbl)
(int) BFD_RELOC_LO16);
return;
}
else if ((((ep->X_add_number &~ (offsetT) 0x7fffffff) == 0
|| ((ep->X_add_number &~ (offsetT) 0x7fffffff)
== ~ (offsetT) 0x7fffffff))
else if ((IS_SEXT_32BIT_NUM (ep->X_add_number)
&& (! dbl
|| ! ep->X_unsigned
|| sizeof (ep->X_add_number) > 4
@ -5544,8 +5547,17 @@ macro (ip)
dsll $tempreg,16
daddu $tempreg,$tempreg,$breg
<op> $treg,<sym>($tempreg) (BFD_RELOC_LO16)
If we have 64-bit addresses, as an optimization, for
addresses which are 32-bit constants (e.g. kseg0/kseg1
addresses) we fall back to the 32-bit address generation
mechanism since it is more efficient. This code should
probably attempt to generate 64-bit constants more
efficiently in general.
*/
if (HAVE_64BIT_ADDRESSES)
if (HAVE_64BIT_ADDRESSES
&& !(offset_expr.X_op == O_constant
&& IS_SEXT_32BIT_NUM (offset_expr.X_add_number)))
{
p = NULL;