decl.c (store_return_init): Use mode of old RTL generated for DECL_RESULT, not…

decl.c (store_return_init): Use mode of old RTL generated for DECL_RESULT, not the mode of DECL_RESULT itself.

	* decl.c (store_return_init): Use mode of old RTL generated for
	DECL_RESULT, not the mode of DECL_RESULT itself.
	* semantics.c (finish_named_return_value): Set DECL_UNINLINABLE
	for functions that used named return values.

From-SVN: r31092

gcc/cp/ChangeLog

+1999-12-26  Mark Mitchell  <mark@codesourcery.com>
+
+	* decl.c (store_return_init): Use mode of old RTL generated for
+	DECL_RESULT, not the mode of DECL_RESULT itself.
+	* semantics.c (finish_named_return_value): Set DECL_UNINLINABLE
+	for functions that used named return values.
+	
 1999-12-24  Mark Mitchell  <mark@codesourcery.com>
 
 	* semantics.c (expand_body): Use

gcc/cp/decl.c

@@ -13445,7 +13445,14 @@ store_return_init (decl)
   if (DECL_REGISTER (decl))
     {
       original_result_rtx = DECL_RTL (decl);
-      DECL_RTL (decl) = gen_reg_rtx (DECL_MODE (decl));
+      /* Note that the mode of the old DECL_RTL may be wider than the
+	 mode of DECL_RESULT, depending on the calling conventions for
+	 the processor.  For example, on the Alpha, a 32-bit integer
+	 is returned in a DImode register -- the DECL_RESULT has
+	 SImode but the DECL_RTL for the DECL_RESULT has DImode.  So,
+	 here, we use the mode the back-end has already assigned for
+	 the return value.  */
+      DECL_RTL (decl) = gen_reg_rtx (GET_MODE (original_result_rtx));
     }
 }
 

gcc/cp/semantics.c

@@ -1203,6 +1203,11 @@ finish_named_return_value (return_id, init)
 	  store_return_init (decl);
 	}
     }
+
+  /* Don't use tree-inlining for functions with named return values.
+     That doesn't work properly because we don't do any translation of
+     the RETURN_INITs when they are copied.  */
+  DECL_UNINLINABLE (current_function_decl) = 1;
 }
 
 /* Cache the value of this class's main virtual function table pointer

gcc/testsuite/g++.old-deja/g++.oliva/nameret1.C

+// Build don't link:
 // Copyright (C) 1999 Free Software Foundation
 
 // by Alexandre Oliva <oliva@lsd.ic.unicamp.br>
@@ -5,7 +6,6 @@
 // distilled from libg++'s Rational.cc
 
 // Special g++ Options:
-// crash test - XFAIL sparc64*-*-* sparcv9*-*-* alpha*-*-*
 
 inline int bar () return r {}
 

gcc/testsuite/g++.old-deja/g++.oliva/nameret2.C

+// Build don't link:
 // Copyright (C) 1999 Free Software Foundation
 
 // by Alexandre Oliva <oliva@lsd.ic.unicamp.br>
@@ -11,4 +12,4 @@ inline int bar () return r {}
 int& foo (int& x) {
   bar ();
   return x;
-} // gets bogus error - XFAIL *-*-*
+}