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(maybe_eliminate_biv_1): In (set (cc0) <biv>) case, swap compare 

operands when mult_val < 0 in one additional place.

From-SVN: r14087
This commit is contained in:
Richard Kenner 1997-05-18 08:39:57 -04:00
parent 1f75ca0de2
commit 2ae3dcac7b
1 changed files with 4 additions and 3 deletions
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7
gcc/loop.c
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@ -6343,9 +6343,10 @@ maybe_eliminate_biv_1 (x, insn, bl, eliminate_p, where)
emit_insn_before (gen_move_insn (tem, copy_rtx (v->add_val)),
where);
if (validate_change (insn, &SET_SRC (PATTERN (insn)),
gen_rtx (COMPARE, VOIDmode,
v->new_reg, tem), 0))
/* Substitute the new register for its invariant value in
the compare expression. */
XEXP (new, (INTVAL (v->mult_val) < 0) ? 0 : 1) = tem;
if (validate_change (insn, &SET_SRC (PATTERN (insn)), new, 0))
return 1;
}
}