Mark noreturn library functions as ECF_LEAF and ECF_COLD.

Author: ibuclaw

gcc/d/ChangeLog

@@ -1,3 +1,9 @@
+2018-02-11  Iain Buclaw  <ibuclaw@gdcproject.org>
+
+	* runtime.def (ASSERT, ASSERT_MSG): Set ECF_COLD and ECF_LEAF flags.
+	(UNITTEST, UNITTEST_MSG): Likewise.
+	(ARRAY_BOUNDS, SWITCH_ERROR): Likewise.
+
 2018-01-28  Iain Buclaw  <ibuclaw@gdcproject.org>
 
 	* gdc.texi (Runtime Options): Remove deprecated -fproperty option.

gcc/d/runtime.def

@@ -34,19 +34,20 @@ along with GCC; see the file COPYING3.  If not see
 #define RT(T1)		    LCT_ ## T1
 
 /* Used when an assert() contract fails.  */
-DEF_D_RUNTIME (ASSERT, "_d_assert", RT(VOID), P2(STRING, UINT), ECF_NORETURN)
+DEF_D_RUNTIME (ASSERT, "_d_assert", RT(VOID), P2(STRING, UINT),
+	       ECF_COLD | ECF_LEAF | ECF_NORETURN)
 DEF_D_RUNTIME (ASSERT_MSG, "_d_assert_msg", RT(VOID), P3(STRING, STRING, UINT),
-	       ECF_NORETURN)
+	       ECF_COLD | ECF_LEAF | ECF_NORETURN)
 
 /* Used when an assert() contract fails in a unittest function.  */
 DEF_D_RUNTIME (UNITTEST, "_d_unittest", RT(VOID), P2(STRING, UINT),
-	       ECF_NORETURN)
+	       ECF_COLD | ECF_LEAF | ECF_NORETURN)
 DEF_D_RUNTIME (UNITTEST_MSG, "_d_unittest_msg", RT(VOID),
-	       P3(STRING, STRING, UINT), ECF_NORETURN)
+	       P3(STRING, STRING, UINT), ECF_COLD | ECF_LEAF | ECF_NORETURN)
 
 /* Used when an array index outside the bounds of its range.  */
 DEF_D_RUNTIME (ARRAY_BOUNDS, "_d_arraybounds", RT(VOID), P2(STRING, UINT),
-	       ECF_NORETURN)
+	       ECF_COLD | ECF_LEAF | ECF_NORETURN)
 
 /* Used when calling new on a class.  */
 DEF_D_RUNTIME (NEWCLASS, "_d_newclass", RT(OBJECT), P1(CONST_CLASSINFO), 0)
@@ -214,7 +215,7 @@ DEF_D_RUNTIME (SWITCH_DSTRING, "_d_switch_dstring", RT(INT),
 /* Used when throwing an error that a switch statement has no default case,
    and yet none of the existing cases matched.  */
 DEF_D_RUNTIME (SWITCH_ERROR, "_d_switch_error", RT(VOID), P2(STRING, UINT),
-	       ECF_NORETURN)
+	       ECF_COLD | ECF_LEAF | ECF_NORETURN)
 
 #undef P0
 #undef P1