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Fix for rs6000_emit_allocate_stack's use of rs6000_emit_set_long_const for ppc64.

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From-SVN: r48458
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Tom Rix 2002-01-02 03:48:53 +00:00 • committed by Tom Rix
parent 99e9e773cb
commit 252b88f78c
2 changed files with 39 additions and 5 deletions
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5
gcc/ChangeLog
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@ -19,6 +19,11 @@
* tree.h: Document new use of TREE_ADDRESSABLE.
(expand_expr_stmt_value): Declare.
2002-01-01 Tom Rix <trix@redhat.com>
* config/rs6000/rs6000.c (rs6000_emit_set_long_const): Fix for use by
rs6000_emit_allocate_stack.
2002-01-01 Joseph S. Myers <jsm28@cam.ac.uk>
* configure.in: Prepend ${srcdir}/config/${cpu_type}/ instead of

39
gcc/config/rs6000/rs6000.c
View file

@ -2002,7 +2002,12 @@ rs6000_emit_set_long_const (dest, c1, c2)
}
else
{
HOST_WIDE_INT d1, d2, d3, d4;
HOST_WIDE_INT d1, d2, d2_s, d3, d4;
/* 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 */
#if HOST_BITS_PER_WIDE_INT >= 64
@ -2011,6 +2016,7 @@ rs6000_emit_set_long_const (dest, c1, c2)
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;
@ -2021,6 +2027,7 @@ rs6000_emit_set_long_const (dest, c1, c2)
d1 = ((c1 & 0xffff) ^ 0x8000) - 0x8000;
c1 -= d1;
d2 = ((c1 & 0xffffffff) ^ 0x80000000) - 0x80000000;
d2_s = d2 >> 16;
if (c1 != d2)
abort ();
c2 += (d2 < 0);
@ -2039,18 +2046,40 @@ rs6000_emit_set_long_const (dest, c1, c2)
emit_move_insn (dest,
gen_rtx_PLUS (DImode, dest, GEN_INT (d3)));
}
else
else if (d3 != 0)
emit_move_insn (dest, GEN_INT (d3));
/* Shift it into place */
if (d3 != 0 || d4 != 0)
emit_move_insn (dest, gen_rtx_ASHIFT (DImode, dest, GEN_INT (32)));
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)
emit_move_insn (dest, gen_rtx_PLUS (DImode, dest, GEN_INT (d2)));
{
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)));
}
else
emit_move_insn (dest, GEN_INT (d2));
}
if (d1 != 0)
emit_move_insn (dest, gen_rtx_PLUS (DImode, dest, GEN_INT (d1)));
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));
}
return dest;