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(gen_input_reload): In PLUS, if OP0 and OP1 are the same, use 

RELOADREG when generating the addition.

From-SVN: r2643
This commit is contained in:
Richard Kenner 1992-10-28 17:05:59 -05:00
parent 3c80f7ed51
commit 39b56c2ac7
1 changed files with 8 additions and 0 deletions
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8
gcc/reload1.c
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@ -5753,6 +5753,14 @@ gen_input_reload (reloadreg, in, before_insn)
tem = op0, op0 = op1, op1 = tem;
emit_insn_before (gen_move_insn (reloadreg, op0), before_insn);
/* If OP0 and OP1 are the same, we can use RELOADREG for OP1.
This fixes a problem on the 32K where the stack pointer cannot
be used as an operand of an add insn. */
if (rtx_equal_p (op0, op1))
op1 = reloadreg;
emit_insn_before (gen_add2_insn (reloadreg, op1), before_insn);
}