predicates.md (const_call_operand): Adjust comment.

	* config/m68k/predicates.md (const_call_operand): Adjust comment.
	(const_sibcall_operand): New.
	(sibcall_operand): Use it.
	* config/m68k/m68k.c (FL_FOR_isa_c): Not ISA_B compatible.
	(m68k_isas): ISAC does not imply FPU or EMAC.
	(override_options): Add ISA_C logic for symbolic jump & call.

From-SVN: r125774

gcc/ChangeLog

@@ -7,6 +7,13 @@
 	* config/m68k/m68k.c (all_isas): Remove FL_CF_FPU and
 	FL_CF_EMAC from the entry for isac.
 
+	* config/m68k/predicates.md (const_call_operand): Adjust comment.
+	(const_sibcall_operand): New.
+	(sibcall_operand): Use it.
+	* config/m68k/m68k.c (FL_FOR_isa_c): Not ISA_B compatible.
+	(m68k_isas): ISAC does not imply FPU or EMAC.
+	(override_options): Add ISA_C logic for symbolic jump & call.
+
 2007-06-17  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
 	* config/sparc/sparc.c (sparc_vis_init_builtins): Retrieve the

gcc/config/m68k/m68k.c

@@ -233,7 +233,8 @@ struct gcc_target targetm = TARGET_INITIALIZER;
 #define FL_FOR_isa_aplus (FL_FOR_isa_a | FL_ISA_APLUS | FL_CF_USP)
 /* Note ISA_B doesn't necessarily include USP (user stack pointer) support.  */
 #define FL_FOR_isa_b     (FL_FOR_isa_a | FL_ISA_B | FL_CF_HWDIV)
-#define FL_FOR_isa_c     (FL_FOR_isa_b | FL_ISA_C | FL_CF_USP)
+/* ISA_C is not upwardly compatible with ISA_B.  */
+#define FL_FOR_isa_c     (FL_FOR_isa_a | FL_ISA_C | FL_CF_HWDIV | FL_CF_USP)
 
 enum m68k_isa
 {
@@ -563,20 +564,27 @@ override_options (void)
   else if (TARGET_ID_SHARED_LIBRARY)
     /* All addresses must be loaded from the GOT.  */
     ;
-  else if (TARGET_68020 || TARGET_ISAB)
+  else if (TARGET_68020 || TARGET_ISAB || TARGET_ISAC)
     {
       if (TARGET_PCREL)
+	m68k_symbolic_call = "bsr.l %c0";
+      else
 	{
-	  m68k_symbolic_call = "bsr.l %c0";
-	  m68k_symbolic_jump = "bra.l %c0";
+#if defined(USE_GAS)
+	  m68k_symbolic_call = "bsr.l %p0";
+#else
+	  m68k_symbolic_call = "bsr %p0";
+#endif
 	}
+      if (TARGET_ISAC)
+	/* No unconditional long branch */;
+      else if (TARGET_PCREL)
+	m68k_symbolic_jump = "bra.l %c0";
       else
 	{
 #if defined(USE_GAS)
-	  m68k_symbolic_call = "bsr.l %p0";
 	  m68k_symbolic_jump = "bra.l %p0";
 #else
-	  m68k_symbolic_call = "bsr %p0";
 	  m68k_symbolic_jump = "bra %p0";
 #endif
 	}

gcc/config/m68k/predicates.md

@@ -159,7 +159,7 @@
     }
 })
 
-;; A constant that can be used the address in a call or sibcall insn.
+;; A constant that can be used the address in a call insn
 (define_predicate "const_call_operand"
   (ior (match_operand 0 "const_int_operand")
        (and (match_test "m68k_symbolic_call != NULL")
@@ -170,9 +170,15 @@
   (ior (match_operand 0 "const_call_operand")
        (match_operand 0 "register_operand")))
 
+;; A constant that can be used the address in a sibcall insn
+(define_predicate "const_sibcall_operand"
+  (ior (match_operand 0 "const_int_operand")
+       (and (match_test "m68k_symbolic_jump != NULL")
+	    (match_operand 0 "symbolic_operand"))))
+
 ;; An operand that can be used as the address in a sibcall insn.
 (define_predicate "sibcall_operand"
-  (ior (match_operand 0 "const_call_operand")
+  (ior (match_operand 0 "const_sibcall_operand")
        (and (match_code "reg")
 	    (match_test "REGNO (op) == STATIC_CHAIN_REGNUM"))))