rtl.h (MEM_COPY_ATTRIBUTES): Also copy RTX_UNCHANGING_P and MEM_ALIAS_SET.

	* rtl.h (MEM_COPY_ATTRIBUTES): Also copy RTX_UNCHANGING_P and
	MEM_ALIAS_SET.
	* alias.c (canon_rtx): Don't copy RTX_UNCHANGING_P or MEM_ALIAS_SET
	when calling MEM_COPY_ATTRIBUTES.
	* emit-rtl.c (operand_subword, change_address): Likewise.
	* explow.c (stabilize): Likewise.
	* expr.c (protect_from_queue, emit_move_insn_1): Likewise.
	* integrate.c (copy_rtx_and_substitute): Likewise.
	* combine.c (combine_simplify_rtx): Don't copy RTX_UNCHANGING_P
	when calling MEM_COPY_ATTRIBUTES.
	(make_extraction, simplify_shift_const, gen_lowpart_for_combine):
	Likewise.
	* cse.c (gen_lowpart_if_possible): Likewise.
	* function.c (fixup_var_refs_1, purge_addressof_1): Likewise.
	* optabs.c (gen_move_insn): Likewise.
	* recog.c (validate_replace_rtx_1): Likewise.
	* simplify-rtx.c (add_mem_for_addr): Likewise.
	* stmt.c (expand_anon_union_decl): Likewise.
	* config/arm/arm.md: Likewise.
	* config/h8300/h7300.c (fix_bit_operand): Likewise.
	* config/m88k/m88k.c (legitimize_address, block_move_loop): Likewise.
	(block_move_no_loop, block_move_sequence): Likewise.
	* config/rs6000/rs6000.c (expand_block_move_mem): Likewise.
	* config/alpha/alpha.c (get_aligned_mem): Likewise.
	Clear MEM_ALIAS_SET.
	* final.c (alter_subreg): Don't copy MEM_ALIAS_SET when calling
	MEM_COPY_ATTRIBUTES.

From-SVN: r33665

1 files changed, 0 insertions, 6 deletions

diff --git a/gcc/expr.c b/gcc/expr.c
index ce4ecc7..8de3905 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -402,9 +402,7 @@ protect_from_queue (x, modify)
 	  register rtx y = XEXP (x, 0);
 	  register rtx new = gen_rtx_MEM (GET_MODE (x), QUEUED_VAR (y));
 
-	  RTX_UNCHANGING_P (new) = RTX_UNCHANGING_P (x);
 	  MEM_COPY_ATTRIBUTES (new, x);
-	  MEM_ALIAS_SET (new) = MEM_ALIAS_SET (x);
 
 	  if (QUEUED_INSN (y))
 	    {
@@ -2748,9 +2746,7 @@ emit_move_insn_1 (x, y)
 	{
 	  rtx new = gen_rtx_MEM (GET_MODE (x), inner);
 
-	  RTX_UNCHANGING_P (new) = RTX_UNCHANGING_P (x);
 	  MEM_COPY_ATTRIBUTES (new, x);
-	  MEM_ALIAS_SET (new) = MEM_ALIAS_SET (x);
 	  x = new;
 	}
       if (reload_in_progress && GET_CODE (y) == MEM
@@ -2758,9 +2754,7 @@ emit_move_insn_1 (x, y)
 	{
 	  rtx new = gen_rtx_MEM (GET_MODE (y), inner);
 
-	  RTX_UNCHANGING_P (new) = RTX_UNCHANGING_P (y);
 	  MEM_COPY_ATTRIBUTES (new, y);
-	  MEM_ALIAS_SET (new) = MEM_ALIAS_SET (y);
 	  y = new;
 	}