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lra-constraints.c (process_address_1): Do not attempt to decompose addresses for MEMs that satisfy fixed-form constraints.

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* lra-constraints.c (process_address_1): Do not attempt to decompose
	addresses for MEMs that satisfy fixed-form constraints.

From-SVN: r243632
This commit is contained in:
Eric Botcazou 2016-12-14 08:34:15 +00:00 committed by Eric Botcazou
parent 253c0172bb
commit 164f063463
2 changed files with 10 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2016-12-14 Eric Botcazou <ebotcazou@adacore.com>
* lra-constraints.c (process_address_1): Do not attempt to decompose
addresses for MEMs that satisfy fixed-form constraints.
2016-12-14 Richard Biener <rguenther@suse.de>
PR tree-optimization/78788

6
gcc/lra-constraints.c
View File

@ -3080,7 +3080,11 @@ process_address_1 (int nop, bool check_only_p,
if (insn_extra_address_constraint (cn))
decompose_lea_address (&ad, curr_id->operand_loc[nop]);
else if (MEM_P (op))
/* Do not attempt to decompose arbitrary addresses generated by combine
for asm operands with loose constraints, e.g 'X'. */
else if (MEM_P (op)
&& !(get_constraint_type (cn) == CT_FIXED_FORM
&& constraint_satisfied_p (op, cn)))
decompose_mem_address (&ad, op);
else if (GET_CODE (op) == SUBREG
&& MEM_P (SUBREG_REG (op)))