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rl78-expand.md (movqi): Handle (SUBREG (SYMBOL_REF)) properly.

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* config/rl78/rl78-expand.md (movqi): Handle (SUBREG (SYMBOL_REF))
	properly.

From-SVN: r209055
This commit is contained in:
Nick Clifton 2014-04-03 13:02:27 +00:00 committed by Nick Clifton
parent 5bed50e827
commit 0886676007
2 changed files with 16 additions and 6 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2014-04-03 Nick Clifton <nickc@redhat.com>
* config/rl78/rl78-expand.md (movqi): Handle (SUBREG (SYMBOL_REF))
properly.
2014-04-03 Martin Jambor <mjambor@suse.cz>
* ipa-cp.c (ipcp_verify_propagated_values): Also dump symtab and

17
gcc/config/rl78/rl78-expand.md
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@ -30,18 +30,23 @@
if (rl78_far_p (operands[0]) && rl78_far_p (operands[1]))
operands[1] = copy_to_mode_reg (QImode, operands[1]);
/* FIXME: Not sure how GCC can generate (SUBREG (SYMBOL_REF)),
but it does. Since this makes no sense, reject it here. */
/* GCC can generate (SUBREG (SYMBOL_REF)) when it has to store a symbol
into a bitfield, or a packed ordinary field. We can handle this
provided that the destination is a register. If not, then load the
source into a register first. */
if (GET_CODE (operands[1]) == SUBREG
&& GET_CODE (XEXP (operands[1], 0)) == SYMBOL_REF)
FAIL;
&& GET_CODE (XEXP (operands[1], 0)) == SYMBOL_REF
&& ! REG_P (operands[0]))
operands[1] = copy_to_mode_reg (QImode, operands[1]);
/* Similarly for (SUBREG (CONST (PLUS (SYMBOL_REF)))).
cf. g++.dg/abi/packed.C. */
if (GET_CODE (operands[1]) == SUBREG
&& GET_CODE (XEXP (operands[1], 0)) == CONST
&& GET_CODE (XEXP (XEXP (operands[1], 0), 0)) == PLUS
&& GET_CODE (XEXP (XEXP (XEXP (operands[1], 0), 0), 0)) == SYMBOL_REF)
FAIL;
&& GET_CODE (XEXP (XEXP (XEXP (operands[1], 0), 0), 0)) == SYMBOL_REF
&& ! REG_P (operands[0]))
operands[1] = copy_to_mode_reg (QImode, operands[1]);
if (CONST_INT_P (operands[1]) && ! IN_RANGE (INTVAL (operands[1]), (-1 << 8) + 1, (1 << 8) - 1))
FAIL;