function.c (keep_stack_depressed): Don't use delete_insn.
* function.c (keep_stack_depressed): Don't use delete_insn.
* expr.h (set_mem_alias_set): Move decl to here.
* rtl.h (mem_attrs): New typedef and struct.
(union rtunion_def): Add field for mem_attrs.
(X0MEMATTR, MEM_ATTRS): New macros.
(MEM_ALIAS_SET): Use MEM_ATTRS.
(MEM_DECL, MEM_OFFSET, MEM_SIZE, MEM_ALIGN): New macros.
(MEM_COPY_ATTRIBUTES): Copy MEM_ATTRS.
(set_mem_alias_set): Delete decl from here.
* alias.c (set_mem_alias_set): Delete from here.
* emit-rtl.c (mem_attrs_htab): New variable.
(rtx_htab_mark, rtx_htab_mark_1): Deleted.
(mem_attrs_htab_hash, mem_attrs_htab_eq): New functions.
(mem_attrs_mark, get_mem_attrs): Likewise.
(gen_rtx_MEM): Clear MEM_ATTRS.
(set_mem_attributes): Move to here.
(set_mem_alias_set): Likewise, and call get_mem_attrs.
(init_emit_once): const_int_htab now deletable htab.
Initialize mem_attrs_htab.
* explow.c (set_mem_attributes): Delete from here.
* function.c (put_var_into_stack): Clear MEM_ATTRS.
(gen_mem_addressof): Likewise; rework to use set_mem_attributes.
* ggc-common.c (ggc_mark_rtx_children, case MEM): New case.
* reload1.c (reload): Rework changing REG to MEM.
From-SVN: r45922