[PATCH][PR64971]Convert function pointer to Pmode when emit call.

gcc/

2016-08-04  Renlin Li  <renlin.li@arm.com>

	PR middle-end/64971
	* calls.c (prepare_call_address): Convert funexp to Pmode when
	necessary.
	* config/aarch64/aarch64.md (sibcall): Remove fix for PR 64971.
	(sibcall_value): Likewise.

From-SVN: r239300

gcc/ChangeLog

+2016-08-09  Renlin Li  <renlin.li@arm.com>
+
+	PR middle-end/64971
+	* calls.c (prepare_call_address): Convert funexp to Pmode when
+	necessary.
+	* config/aarch64/aarch64.md (sibcall): Remove fix for PR 64971.
+	(sibcall_value): Likewise.
+
 2016-08-09  Marek Polacek  <polacek@redhat.com>
 
 	PR c/7652

gcc/calls.c

@@ -194,10 +194,19 @@ prepare_call_address (tree fndecl_or_type, rtx funexp, rtx static_chain_value,
 	       && targetm.small_register_classes_for_mode_p (FUNCTION_MODE))
 	      ? force_not_mem (memory_address (FUNCTION_MODE, funexp))
 	      : memory_address (FUNCTION_MODE, funexp));
-  else if (! sibcallp)
+  else
     {
-      if (!NO_FUNCTION_CSE && optimize && ! flag_no_function_cse)
-	funexp = force_reg (Pmode, funexp);
+      /* funexp could be a SYMBOL_REF represents a function pointer which is
+	 of ptr_mode.  In this case, it should be converted into address mode
+	 to be a valid address for memory rtx pattern.  See PR 64971.  */
+      if (GET_MODE (funexp) != Pmode)
+	funexp = convert_memory_address (Pmode, funexp);
+
+      if (! sibcallp)
+	{
+	  if (!NO_FUNCTION_CSE && optimize && ! flag_no_function_cse)
+	    funexp = force_reg (Pmode, funexp);
+	}
     }
 
   if (static_chain_value != 0

gcc/config/aarch64/aarch64.md

@@ -859,13 +859,6 @@
 	   || aarch64_is_noplt_call_p (callee)))
       XEXP (operands[0], 0) = force_reg (Pmode, callee);
 
-    /* FIXME: This is a band-aid.  Need to analyze why expand_expr_addr_expr
-       is generating an SImode symbol reference.  See PR 64971.  */
-    if (TARGET_ILP32
-	&& GET_CODE (XEXP (operands[0], 0)) == SYMBOL_REF
-	&& GET_MODE (XEXP (operands[0], 0)) == SImode)
-      XEXP (operands[0], 0) = convert_memory_address (Pmode,
-						      XEXP (operands[0], 0));
     if (operands[2] == NULL_RTX)
       operands[2] = const0_rtx;
 
@@ -897,14 +890,6 @@
 	   || aarch64_is_noplt_call_p (callee)))
       XEXP (operands[1], 0) = force_reg (Pmode, callee);
 
-    /* FIXME: This is a band-aid.  Need to analyze why expand_expr_addr_expr
-       is generating an SImode symbol reference.  See PR 64971.  */
-    if (TARGET_ILP32
-	&& GET_CODE (XEXP (operands[1], 0)) == SYMBOL_REF
-	&& GET_MODE (XEXP (operands[1], 0)) == SImode)
-      XEXP (operands[1], 0) = convert_memory_address (Pmode,
-						      XEXP (operands[1], 0));
-
     if (operands[3] == NULL_RTX)
       operands[3] = const0_rtx;