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re PR target/16357 (ICE copying 7 bytes between extern char[]s) 

PR target/16357
	* config/mips/mips.c (mips_block_move_straight): Pass BLKmode memrefs
	to mips_expand_unaligned_load, mips_expand_unaligned_store, and
	move_by_pieces.

From-SVN: r84108
This commit is contained in:
Richard Sandiford 2004-07-05 06:37:10 +00:00 committed by Richard Sandiford
parent feb61729c9
commit e0ec4c3b6b
4 changed files with 31 additions and 18 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2004-07-05 Richard Sandiford <rsandifo@redhat.com>
PR target/16357
* config/mips/mips.c (mips_block_move_straight): Pass BLKmode memrefs
to mips_expand_unaligned_load, mips_expand_unaligned_store, and
move_by_pieces.
2004-07-05 Josef Zlomek <zlomekj@suse.cz>
* var-tracking.c: Fix some comments.

36
gcc/config/mips/mips.c
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@ -3402,33 +3402,33 @@ mips_block_move_straight (rtx dest, rtx src, HOST_WIDE_INT length)
the source has enough alignment, otherwise use left/right pairs. */
for (offset = 0, i = 0; offset + delta <= length; offset += delta, i++)
{
rtx part;
regs[i] = gen_reg_rtx (mode);
part = adjust_address (src, mode, offset);
if (MEM_ALIGN (part) >= bits)
emit_move_insn (regs[i], part);
else if (!mips_expand_unaligned_load (regs[i], part, bits, 0))
abort ();
if (MEM_ALIGN (src) >= bits)
emit_move_insn (regs[i], adjust_address (src, mode, offset));
else
{
rtx part = adjust_address (src, BLKmode, offset);
if (!mips_expand_unaligned_load (regs[i], part, bits, 0))
abort ();
}
}
/* Copy the chunks to the destination. */
for (offset = 0, i = 0; offset + delta <= length; offset += delta, i++)
{
rtx part;
part = adjust_address (dest, mode, offset);
if (MEM_ALIGN (part) >= bits)
emit_move_insn (part, regs[i]);
else if (!mips_expand_unaligned_store (part, regs[i], bits, 0))
abort ();
}
if (MEM_ALIGN (dest) >= bits)
emit_move_insn (adjust_address (dest, mode, offset), regs[i]);
else
{
rtx part = adjust_address (dest, BLKmode, offset);
if (!mips_expand_unaligned_store (part, regs[i], bits, 0))
abort ();
}
/* Mop up any left-over bytes. */
if (offset < length)
{
src = adjust_address (src, mode, offset);
dest = adjust_address (dest, mode, offset);
src = adjust_address (src, BLKmode, offset);
dest = adjust_address (dest, BLKmode, offset);
move_by_pieces (dest, src, length - offset,
MIN (MEM_ALIGN (src), MEM_ALIGN (dest)), 0);
}

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2004-07-05 Richard Sandiford <rsandifo@redhat.com>
* gcc.c-torture/compile/20040705-1.c: New test.
2004-07-04 Bud Davis <bdavis9659@comcast.net>
* gfortran.fortran-torture/execute/seq_io.f90: New test.

2
gcc/testsuite/gcc.c-torture/compile/20040705-1.c Normal file
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@ -0,0 +1,2 @@
extern char foo[], bar[];
void f (void) { memcpy (foo, bar, 7); }