emit-rtl.c (last_call_insn, [...]): New functions.

	* emit-rtl.c (last_call_insn, add_function_usage_to): New functions.
	* rtl.h (last_call_insn, add_function_usage_to): New prototypes.
	* builtins.c (expand_builtin_apply): Use the new emit-rtl functions.
	* calls.c (emit_call_1): Likewise.
	(expand_call): For calls initializing constant memory, replace
	emission of standalone mem /u clobber with function usage entry.
	* expr.c (emit_block_move_via_libcall): Likewise.
	* cse.c (count_reg_usage, case EXPR_LIST): New case.
	* flow.c (propagate_one_insn): Pass entire operand of
	CALL_INSN_FUNCTION_USAGE to mark_used_regs.
	* integrate.c (try_constants): For CALL_INSNs, substitute constants
	within the FUNCTION_USAGE also.
	* loop.c (prescan_loop): Note clobbers of const mem mentioned in
	FUNCTION_USAGE lists.
	* reload1.c (replace_pseudos_in): Renamed.
	(reload): Use it for clobbers surviving until the end of the reload.

From-SVN: r66429

1 files changed, 11 insertions, 0 deletions

diff --git a/gcc/cse.c b/gcc/cse.c
index a90f0d8..01c583c 100644
--- a/gcc/cse.c
+++ b/gcc/cse.c
@@ -7515,6 +7515,17 @@ count_reg_usage (x, counts, dest, incr)
         count_reg_usage (XEXP (note, 0), counts, NULL_RTX, incr);
       return;
 
+    case EXPR_LIST:
+      if (REG_NOTE_KIND (x) == REG_EQUAL
+	  || (REG_NOTE_KIND (x) != REG_NONNEG && GET_CODE (XEXP (x,0)) == USE)
+	  /* FUNCTION_USAGE expression lists may include (CLOBBER (mem /u)),
+	     involving registers in the address.  */
+	  || GET_CODE (XEXP (x, 0)) == CLOBBER)
+	count_reg_usage (XEXP (x, 0), counts, NULL_RTX, incr);
+
+      count_reg_usage (XEXP (x, 1), counts, NULL_RTX, incr);
+      return;
+
     case INSN_LIST:
       abort ();