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sparc.md (TFmode splits): Handle destination registers being referenced in the address correctly.

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* config/sparc/sparc.md (TFmode splits): Handle destination
	registers being referenced in the address correctly.

From-SVN: r21901
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David S. Miller 1998-08-22 00:11:24 +00:00 committed by David S. Miller
parent a00c936aaa
commit 994099bb20
2 changed files with 21 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
Fri Aug 21 23:07:46 1998 David S. Miller <davem@pierdol.cobaltmicro.com>
* config/sparc/sparc.md (TFmode splits): Handle destination
registers being referenced in the address correctly.
Fri Aug 21 19:31:31 1998 Alexandre Petit-Bianco <apbianco@cygnus.com>
* tree.def (LABELED_BLOCK_EXPR, EXIT_BLOCK_EXPR): New tree nodes.

18
gcc/config/sparc/sparc.md
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@ -3333,12 +3333,26 @@
rtx word1 = change_address (operands[1], DFmode,
plus_constant_for_output (XEXP (word0, 0), 8));
rtx dest1, dest2;
int self_reference = reg_mentioned_p (operands[0],
XEXP (XEXP (word1, 0), 0));
/* Ugly, but gen_highpart will crap out here for 32-bit targets. */
dest1 = gen_rtx_SUBREG (DFmode, operands[0], WORDS_BIG_ENDIAN == 0);
dest2 = gen_rtx_SUBREG (DFmode, operands[0], WORDS_BIG_ENDIAN != 0);
emit_insn (gen_movdf (dest1, word0));
emit_insn (gen_movdf (dest2, word1));
/* Now output, ordering such that we don't clobber any registers
mentioned in the address. */
if (self_reference != 0
&& WORDS_BIG_ENDIAN)
{
emit_insn (gen_movdf (dest2, word1));
emit_insn (gen_movdf (dest1, word0));
}
else
{
emit_insn (gen_movdf (dest1, word0));
emit_insn (gen_movdf (dest2, word1));
}
DONE;
}")