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alpha.c (alpha_emit_set_const): Add a REG_EQUAL note if a non-trivial load was emitted. 

* config/alpha/alpha.c (alpha_emit_set_const): Add a REG_EQUAL note
        if a non-trivial load was emitted.
        (alpha_emit_set_const_1): Remove obsolete extension.  Fix thinko
        in high+extra+low case.

From-SVN: r51427
This commit is contained in:
Richard Henderson 2002-03-26 18:58:25 -08:00 committed by Richard Henderson
parent f90ebaae0e
commit c6374573fc
2 changed files with 20 additions and 11 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2002-03-26 Richard Henderson <rth@redhat.com>
* config/alpha/alpha.c (alpha_emit_set_const): Add a REG_EQUAL note
if a non-trivial load was emitted.
(alpha_emit_set_const_1): Remove obsolete extension. Fix thinko
in high+extra+low case.
2002-03-26 Richard Henderson <rth@redhat.com>
* config.gcc (sparc*-solaris): Use float_format=sparc.

24
gcc/config/alpha/alpha.c
View File

@ -2243,8 +2243,18 @@ alpha_emit_set_const (target, mode, c, n)
}
/* Try 1 insn, then 2, then up to N. */
for (i = 1; i <= n && result == 0; i++)
result = alpha_emit_set_const_1 (target, mode, c, i);
for (i = 1; i <= n; i++)
{
result = alpha_emit_set_const_1 (target, mode, c, i);
if (result)
{
rtx insn = get_last_insn ();
rtx set = single_set (insn);
if (! CONSTANT_P (SET_SRC (set)))
set_unique_reg_note (get_last_insn (), REG_EQUAL, GEN_INT (c));
break;
}
}
/* Allow for the case where we changed the mode of TARGET. */
if (result == target)
@ -2269,15 +2279,6 @@ alpha_emit_set_const_1 (target, mode, c, n)
= (flag_expensive_optimizations && !no_new_pseudos ? 0 : target);
rtx temp, insn;
#if HOST_BITS_PER_WIDE_INT == 64
/* We are only called for SImode and DImode. If this is SImode, ensure that
we are sign extended to a full word. This does not make any sense when
cross-compiling on a narrow machine. */
if (mode == SImode)
c = ((c & 0xffffffff) ^ 0x80000000) - 0x80000000;
#endif
/* If this is a sign-extended 32-bit constant, we can do this in at most
three insns, so do it if we have enough insns left. We always have
a sign-extended 32-bit constant when compiling on a narrow machine. */
@ -2330,6 +2331,7 @@ alpha_emit_set_const_1 (target, mode, c, n)
insn = gen_rtx_PLUS (mode, temp, GEN_INT (extra << 16));
insn = gen_rtx_SET (VOIDmode, subtarget, insn);
emit_insn (insn);
temp = subtarget;
}
if (target == NULL)