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optabs.c (expand_binop): For double-word integer multiplies...

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* optabs.c (expand_binop): For double-word integer multiplies,
        do not compute intermediate results into something that is
        not a register (such as a SUBREG or MEM).

From-SVN: r53718
This commit is contained in:
Jeff Law 2002-05-21 19:54:40 -06:00 • committed by Jeff Law
parent f87c27b4ab
commit c7539aa0a6
2 changed files with 9 additions and 0 deletions
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4
gcc/ChangeLog
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@ -42,6 +42,10 @@
2002-05-21 Jeffrey A Law <law@redhat.com>
* optabs.c (expand_binop): For double-word integer multiplies,
do not compute intermediate results into something that is
not a register (such as a SUBREG or MEM).
* i386.c (ix86_sched_reorder_ppro): Fix typo/thinko.
(ix86_sched_reorder): Make sure to initialize scheduling
data even when there's only one insn in the ready queue.

5
gcc/optabs.c
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@ -1461,6 +1461,9 @@ expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods)
rtx temp = expand_binop (word_mode, binoptab, op0_low, op1_xhigh,
NULL_RTX, 0, OPTAB_DIRECT);
if (!REG_P (product_high))
product_high = force_reg (word_mode, product_high);
if (temp != 0)
temp = expand_binop (word_mode, add_optab, temp, product_high,
product_high, 0, next_methods);
@ -1480,6 +1483,8 @@ expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods)
if (temp != 0 && temp != product_high)
emit_move_insn (product_high, temp);
emit_move_insn (operand_subword (product, high, 1, mode), product_high);
if (temp != 0)
{
if (mov_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)