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[ARC] Fix move_double_src_operand predicate. 

Durring compilation process, (subreg (mem ...) ...) can occur. Hence,
we need to check if the address of mem is a valid one. This patch is
fixing this check by directly calling the address_operand, instead of
calling move_double_src_operand, as the latter is always checking
against the original mode, thus, returning false when the inner and
outer modes are different.

gcc/
2017-03-27  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/predicates.md (move_double_src_operand): Replace the
	call to move_double_src_operand with a call to address_operand.

From-SVN: r246499
This commit is contained in:
Claudiu Zissulescu 2017-03-27 12:56:46 +02:00 committed by Claudiu Zissulescu
parent c4192ad702
commit e5dcff3eb5
2 changed files with 6 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2017-03-27 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/predicates.md (move_double_src_operand): Replace the
call to move_double_src_operand with a call to address_operand.
2017-03-27 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/elf.h (ARGET_ARC_TP_REGNO_DEFAULT): Define.

2
gcc/config/arc/predicates.md
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@ -318,7 +318,7 @@
/* (subreg (mem ...) ...) can occur here if the inner part was once a
pseudo-reg and is now a stack slot. */
if (GET_CODE (SUBREG_REG (op)) == MEM)
return move_double_src_operand (SUBREG_REG (op), mode);
return address_operand (XEXP (SUBREG_REG (op), 0), mode);
else
return register_operand (op, mode);
case MEM :