re PR debug/47283 (ICE in refs_may_alias_p_1, at tree-ssa-alias.c)
PR debug/47283 * cfgexpand.c (expand_debug_expr) <case MEM_REF>: If MEM_REF first operand is not is_gimple_mem_ref_addr, try to fold it. If the operand still isn't is_gimple_mem_ref_addr, clear MEM_EXPR on op0. From-SVN: r170654
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@ -1,3 +1,11 @@
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2011-03-03 Jakub Jelinek <jakub@redhat.com>
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PR debug/47283
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* cfgexpand.c (expand_debug_expr) <case MEM_REF>: If MEM_REF
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first operand is not is_gimple_mem_ref_addr, try to fold it.
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If the operand still isn't is_gimple_mem_ref_addr, clear
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MEM_EXPR on op0.
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2011-03-03 Richard Guenther <rguenther@suse.de>
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PR middle-end/47283
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@ -2578,6 +2578,15 @@ expand_debug_expr (tree exp)
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}
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case MEM_REF:
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if (!is_gimple_mem_ref_addr (TREE_OPERAND (exp, 0)))
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{
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tree newexp = fold_binary (MEM_REF, TREE_TYPE (exp),
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TREE_OPERAND (exp, 0),
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TREE_OPERAND (exp, 1));
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if (newexp)
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return expand_debug_expr (newexp);
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}
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/* FALLTHROUGH */
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case INDIRECT_REF:
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op0 = expand_debug_expr (TREE_OPERAND (exp, 0));
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if (!op0)
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@ -2611,6 +2620,9 @@ expand_debug_expr (tree exp)
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op0 = gen_rtx_MEM (mode, op0);
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set_mem_attributes (op0, exp, 0);
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if (TREE_CODE (exp) == MEM_REF
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&& !is_gimple_mem_ref_addr (TREE_OPERAND (exp, 0)))
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set_mem_expr (op0, NULL_TREE);
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set_mem_addr_space (op0, as);
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return op0;
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