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Use ior for loading constant 

From-SVN: r48810
This commit is contained in:
Tom Rix 2002-01-13 04:43:55 +00:00 committed by Tom Rix
parent ae72572be9
commit bc06712daa
2 changed files with 61 additions and 72 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2002-01-12 Tom Rix <trix@redhat.com>
* config/rs6000/rs6000.c (rs6000_emit_set_long_const): Use ior for
TARGET_POWERPC64.
2002-01-12 Richard Henderson <rth@redhat.com>
* config/i386/i386.c (bdesc_2arg): Mark psadbw MASK_3DNOW_A.

128
gcc/config/rs6000/rs6000.c
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@ -2003,86 +2003,70 @@ rs6000_emit_set_long_const (dest, c1, c2)
}
else
{
HOST_WIDE_INT d1, d2, d2_s, d3, d4;
HOST_WIDE_INT ud1, ud2, ud3, ud4;
/* This function is called by rs6000_emit_allocate_stack after reload
with a dest of r0. r0 is an invalid register for addsi. Use an addi
and a shift instead. */
int regnum = REGNO (dest);
/* Decompose the entire word */
ud1 = c1 & 0xffff;
ud2 = (c1 & 0xffff0000) >> 16;
#if HOST_BITS_PER_WIDE_INT >= 64
if (c2 != -(c1 < 0))
abort ();
d1 = ((c1 & 0xffff) ^ 0x8000) - 0x8000;
c1 -= d1;
d2 = ((c1 & 0xffffffff) ^ 0x80000000) - 0x80000000;
d2_s = d2 >> 16;
c1 = (c1 - d2) >> 32;
d3 = ((c1 & 0xffff) ^ 0x8000) - 0x8000;
c1 -= d3;
d4 = ((c1 & 0xffffffff) ^ 0x80000000) - 0x80000000;
if (c1 != d4)
abort ();
#else
d1 = ((c1 & 0xffff) ^ 0x8000) - 0x8000;
c1 -= d1;
d2 = ((c1 & 0xffffffff) ^ 0x80000000) - 0x80000000;
d2_s = d2 >> 16;
if (c1 != d2)
abort ();
c2 += (d2 < 0);
d3 = ((c2 & 0xffff) ^ 0x8000) - 0x8000;
c2 -= d3;
d4 = ((c2 & 0xffffffff) ^ 0x80000000) - 0x80000000;
if (c2 != d4)
abort ();
c2 = c1 >> 32;
#endif
ud3 = c2 & 0xffff;
ud4 = (c2 & 0xffff0000) >> 16;
/* Construct the high word */
if (d4 != 0)
if ((ud4 == 0xffff && ud3 == 0xffff && ud2 == 0xffff && (ud1 & 0x8000))
|| (ud4 == 0 && ud3 == 0 && ud2 == 0 && ! (ud1 & 0x8000)))
{
emit_move_insn (dest, GEN_INT (d4));
if (d3 != 0)
emit_move_insn (dest,
gen_rtx_PLUS (DImode, dest, GEN_INT (d3)));
}
else if (d3 != 0)
emit_move_insn (dest, GEN_INT (d3));
/* Shift it into place */
if (d3 != 0 || d4 != 0)
if (regnum == 0 && d2 != 0)
emit_move_insn (dest, gen_rtx_ASHIFT (DImode, dest, GEN_INT (16)));
else
emit_move_insn (dest, gen_rtx_ASHIFT (DImode, dest, GEN_INT (32)));
/* Add in the low bits. */
if (d2 != 0)
{
if (d3 != 0 || d4 != 0)
{
if (regnum == 0)
{
emit_move_insn (dest, gen_rtx_PLUS (DImode, dest,
GEN_INT (d2_s)));
emit_move_insn (dest, gen_rtx_ASHIFT (DImode, dest,
GEN_INT (16)));
}
else
emit_move_insn (dest, gen_rtx_PLUS (DImode, dest,
GEN_INT (d2)));
}
if (ud1 & 0x8000)
emit_move_insn (dest, GEN_INT (((ud1 ^ 0x8000) - 0x8000)));
else
emit_move_insn (dest, GEN_INT (d2));
emit_move_insn (dest, GEN_INT (ud1));
}
if (d1 != 0)
if (d2 != 0 || d3 != 0 || d4 != 0)
emit_move_insn (dest, gen_rtx_PLUS (DImode, dest, GEN_INT (d1)));
else
emit_move_insn (dest, GEN_INT (d1));
}
else if ((ud4 == 0xffff && ud3 == 0xffff && (ud2 & 0x8000))
|| (ud4 == 0 && ud3 == 0 && ! (ud2 & 0x8000)))
{
if (ud2 & 0x8000)
emit_move_insn (dest, GEN_INT (((ud2 << 16) ^ 0x80000000)
- 0x80000000));
else
emit_move_insn (dest, GEN_INT (ud2 << 16));
if (ud1 != 0)
emit_move_insn (dest, gen_rtx_IOR (DImode, dest, GEN_INT (ud1)));
}
else if ((ud4 == 0xffff && (ud3 & 0x8000))
|| (ud4 == 0 && ! (ud3 & 0x8000)))
{
if (ud3 & 0x8000)
emit_move_insn (dest, GEN_INT (((ud3 << 16) ^ 0x80000000)
- 0x80000000));
else
emit_move_insn (dest, GEN_INT (ud3 << 16));
if (ud2 != 0)
emit_move_insn (dest, gen_rtx_IOR (DImode, dest, GEN_INT (ud2)));
emit_move_insn (dest, gen_rtx_ASHIFT (DImode, dest, GEN_INT (16)));
if (ud1 != 0)
emit_move_insn (dest, gen_rtx_IOR (DImode, dest, GEN_INT (ud1)));
}
else
{
if (ud4 & 0x8000)
emit_move_insn (dest, GEN_INT (((ud4 << 16) ^ 0x80000000)
- 0x80000000));
else
emit_move_insn (dest, GEN_INT (ud4 << 16));
if (ud3 != 0)
emit_move_insn (dest, gen_rtx_IOR (DImode, dest, GEN_INT (ud3)));
emit_move_insn (dest, gen_rtx_ASHIFT (DImode, dest, GEN_INT (32)));
if (ud2 != 0)
emit_move_insn (dest, gen_rtx_IOR (DImode, dest,
GEN_INT (ud2 << 16)));
if (ud1 != 0)
emit_move_insn (dest, gen_rtx_IOR (DImode, dest, GEN_INT (ud1)));
}
}
return dest;
}