mn10300.h (FIRST_PSEUDO_REGISTER): Increment by one.

        * config/mn10300/mn10300.h (FIRST_PSEUDO_REGISTER): Increment by
        one.
        (MDR_REGNUM): Define.
        (FIXED_REGISTERS, CALL_USED_REGISTERS): Add MDR as a fixed
        register.
        (REG_CLASS_CONTENTS): Add MDR to ALL_REGS.
        (INCOMING_RETURN_ADDR_RTX): Define in terms of MDR.
        (REGISTER_NAMES): Add MDR.
        (DWARF2_DEBUGGING_INFO): Define to 1.
        * config/mn10300/mn10300.c (TARGET_EXCEPT_UNWIND_INFO): Define.
        (F): New function.  Sets RTX_FRAME_RELATED_P.
        (mn10300_gen_multiple_store): Use F.
        (expand_prologue): Use F.  Use gen_movsf() to push floating
        point registers.
        (expand_epilogue): Use gen_movsf() to pop floating point
        registers.
        (mn10300_option_override): Disable combine stack adjust pass.

From-SVN: r165015

gcc/ChangeLog

+2010-10-06  Nick Clifton  <nickc@redhat.com>
+
+	* config/mn10300/mn10300.h (FIRST_PSEUDO_REGISTER): Increment by
+	one.
+	(MDR_REGNUM): Define.
+	(FIXED_REGISTERS, CALL_USED_REGISTERS): Add MDR as a fixed
+	register.
+	(REG_CLASS_CONTENTS): Add MDR to ALL_REGS.
+	(INCOMING_RETURN_ADDR_RTX): Define in terms of MDR.
+	(REGISTER_NAMES): Add MDR.
+	(DWARF2_DEBUGGING_INFO): Define to 1.
+	* config/mn10300/mn10300.c (TARGET_EXCEPT_UNWIND_INFO): Define.
+	(F): New function.  Sets RTX_FRAME_RELATED_P.
+	(mn10300_gen_multiple_store): Use F.
+	(expand_prologue): Use F.  Use gen_movsf() to push floating
+	point registers.
+	(expand_epilogue): Use gen_movsf() to pop floating point
+	registers.
+	(mn10300_option_override): Disable combine stack adjust pass.
+
 2010-10-06  Thomas Schwinge  <thomas@schwinge.name>
 
 	PR target/45901

gcc/config/mn10300/mn10300.c

@@ -93,6 +93,9 @@ static void mn10300_asm_output_mi_thunk (FILE *, tree, HOST_WIDE_INT, HOST_WIDE_
 static bool mn10300_can_output_mi_thunk (const_tree, HOST_WIDE_INT, HOST_WIDE_INT, const_tree);
 
 /* Initialize the GCC target structure.  */
+#undef  TARGET_EXCEPT_UNWIND_INFO
+#define TARGET_EXCEPT_UNWIND_INFO sjlj_except_unwind_info
+
 #undef TARGET_ASM_ALIGNED_HI_OP
 #define TARGET_ASM_ALIGNED_HI_OP "\t.hword\t"
 
@@ -187,6 +190,12 @@ mn10300_option_override (void)
 {
   if (TARGET_AM33)
     target_flags &= ~MASK_MULT_BUG;
+
+  /* FIXME: The combine stack adjustments pass is breaking
+     cc0-setter/cc0-user relationship by inserting a jump
+     instruction.  This should be investigated, but for now
+     just disable the pass.  */
+  flag_combine_stack_adjustments = 0;
 }
 
 static void
@@ -661,6 +670,13 @@ mn10300_get_live_callee_saved_regs (void)
   return mask;
 }
 
+static rtx
+F (rtx r)
+{
+  RTX_FRAME_RELATED_P (r) = 1;
+  return r;
+}
+
 /* Generate an instruction that pushes several registers onto the stack.
    Register K will be saved if bit K in MASK is set.  The function does
    nothing if MASK is zero.
@@ -702,11 +718,11 @@ mn10300_gen_multiple_store (int mask)
 
       /* Create the instruction that updates the stack pointer.  */
       XVECEXP (par, 0, 0)
-	= gen_rtx_SET (SImode,
-		       stack_pointer_rtx,
-		       gen_rtx_PLUS (SImode,
-				     stack_pointer_rtx,
-				     GEN_INT (-count * 4)));
+	= F (gen_rtx_SET (SImode,
+			  stack_pointer_rtx,
+			  gen_rtx_PLUS (SImode,
+					stack_pointer_rtx,
+					GEN_INT (-count * 4))));
 
       /* Create each store.  */
       pari = 1;
@@ -717,14 +733,13 @@ mn10300_gen_multiple_store (int mask)
 					stack_pointer_rtx,
 					GEN_INT (-pari * 4));
 	    XVECEXP(par, 0, pari)
-	      = gen_rtx_SET (VOIDmode,
-			     gen_rtx_MEM (SImode, address),
-			     gen_rtx_REG (SImode, i));
+	      = F (gen_rtx_SET (VOIDmode,
+				gen_rtx_MEM (SImode, address),
+				gen_rtx_REG (SImode, i)));
 	    pari += 1;
 	  }
 
-      par = emit_insn (par);
-      RTX_FRAME_RELATED_P (par) = 1;
+      F (emit_insn (par));
     }
 }
 
@@ -751,7 +766,6 @@ expand_prologue (void)
 	     save_a0_no_merge } strategy;
       unsigned int strategy_size = (unsigned)-1, this_strategy_size;
       rtx reg;
-      rtx insn;
 
       /* We have several different strategies to save FP registers.
 	 We can store them using SP offsets, which is beneficial if
@@ -891,25 +905,25 @@ expand_prologue (void)
 	{
 	case save_sp_no_merge:
 	case save_a0_no_merge:
-	  emit_insn (gen_addsi3 (stack_pointer_rtx,
-				 stack_pointer_rtx,
-				 GEN_INT (-4 * num_regs_to_save)));
+	  F (emit_insn (gen_addsi3 (stack_pointer_rtx,
+				    stack_pointer_rtx,
+				    GEN_INT (-4 * num_regs_to_save))));
 	  xsize = 0;
 	  break;
 
 	case save_sp_partial_merge:
-	  emit_insn (gen_addsi3 (stack_pointer_rtx,
-				 stack_pointer_rtx,
-				 GEN_INT (-128)));
+	  F (emit_insn (gen_addsi3 (stack_pointer_rtx,
+				    stack_pointer_rtx,
+				    GEN_INT (-128))));
 	  xsize = 128 - 4 * num_regs_to_save;
 	  size -= xsize;
 	  break;
 
 	case save_sp_merge:
 	case save_a0_merge:
-	  emit_insn (gen_addsi3 (stack_pointer_rtx,
-				 stack_pointer_rtx,
-				 GEN_INT (-(size + 4 * num_regs_to_save))));
+	  F (emit_insn (gen_addsi3 (stack_pointer_rtx,
+				    stack_pointer_rtx,
+				    GEN_INT (-(size + 4 * num_regs_to_save)))));
 	  /* We'll have to adjust FP register saves according to the
 	     frame size.  */
 	  xsize = size;
@@ -934,9 +948,9 @@ expand_prologue (void)
 	case save_a0_merge:
 	case save_a0_no_merge:
 	  reg = gen_rtx_REG (SImode, FIRST_ADDRESS_REGNUM);
-	  emit_insn (gen_movsi (reg, stack_pointer_rtx));
+	  F (emit_insn (gen_movsi (reg, stack_pointer_rtx)));
 	  if (xsize)
-	    emit_insn (gen_addsi3 (reg, reg, GEN_INT (xsize)));
+	    F (emit_insn (gen_addsi3 (reg, reg, GEN_INT (xsize))));
 	  reg = gen_rtx_POST_INC (SImode, reg);
 	  break;
 
@@ -967,22 +981,21 @@ expand_prologue (void)
 		xsize += 4;
 	      }
 
-	    insn = emit_insn (gen_movsi (gen_rtx_MEM (SImode, addr),
-					 gen_rtx_REG (SImode, i)));
-
-	    RTX_FRAME_RELATED_P (insn) = 1;
+	    F (emit_insn (gen_movsf (gen_rtx_MEM (SFmode, addr),
+				     gen_rtx_REG (SFmode, i))));
 	  }
     }
 
   /* Now put the frame pointer into the frame pointer register.  */
   if (frame_pointer_needed)
-    emit_move_insn (frame_pointer_rtx, stack_pointer_rtx);
+    F (emit_move_insn (frame_pointer_rtx, stack_pointer_rtx));
 
   /* Allocate stack for this frame.  */
   if (size)
-    emit_insn (gen_addsi3 (stack_pointer_rtx,
-			   stack_pointer_rtx,
-			   GEN_INT (-size)));
+    F (emit_insn (gen_addsi3 (stack_pointer_rtx,
+			      stack_pointer_rtx,
+			      GEN_INT (-size))));
+
   if (flag_pic && df_regs_ever_live_p (PIC_OFFSET_TABLE_REGNUM))
     emit_insn (gen_GOTaddr2picreg ());
 }
@@ -1169,8 +1182,8 @@ expand_epilogue (void)
 
 	    size += 4;
 
-	    emit_insn (gen_movsi (gen_rtx_REG (SImode, i),
-				  gen_rtx_MEM (SImode, addr)));
+	    emit_insn (gen_movsf (gen_rtx_REG (SFmode, i),
+				  gen_rtx_MEM (SFmode, addr)));
 	  }
 
       /* If we were using the restore_a1 strategy and the number of
@@ -1261,8 +1274,8 @@ notice_update_cc (rtx body, rtx insn)
       /* The insn is a compare instruction.  */
       CC_STATUS_INIT;
       cc_status.value1 = SET_SRC (body);
-      if (GET_CODE (cc_status.value1) == COMPARE
-	  && GET_MODE (XEXP (cc_status.value1, 0)) == SFmode)
+      if (GET_CODE (SET_SRC (body)) == COMPARE
+	  && GET_MODE (XEXP (SET_SRC (body), 0)) == SFmode)
 	cc_status.mdep.fpCC = 1;
       break;
 
@@ -2138,7 +2151,7 @@ mn10300_rtx_costs (rtx x, int code, int outer_code, int *total, bool speed ATTRI
 bool
 mn10300_wide_const_load_uses_clr (rtx operands[2])
 {
-  long val[2];
+  long val[2] = {0, 0};
 
   if (GET_CODE (operands[0]) != REG
       || REGNO_REG_CLASS (REGNO (operands[0])) != DATA_REGS)

gcc/config/mn10300/mn10300.h

@@ -117,7 +117,7 @@ extern enum processor_type mn10300_processor;
    All registers that the compiler knows about must be given numbers,
    even those that are not normally considered general registers.  */
 
-#define FIRST_PSEUDO_REGISTER 50
+#define FIRST_PSEUDO_REGISTER 51
 
 /* Specify machine-specific register numbers.  */
 #define FIRST_DATA_REGNUM 0
@@ -128,6 +128,7 @@ extern enum processor_type mn10300_processor;
 #define LAST_EXTENDED_REGNUM 17
 #define FIRST_FP_REGNUM 18
 #define LAST_FP_REGNUM 49
+#define MDR_REGNUM 50
 #define FIRST_ARGUMENT_REGNUM 0
 
 /* Specify the registers used for certain standard purposes.
@@ -153,7 +154,7 @@ extern enum processor_type mn10300_processor;
 #define FIXED_REGISTERS \
   { 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0 \
   , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 \
-  , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 \
+  , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 \
   }
 
 /* 1 for registers not available across function calls.
@@ -167,7 +168,7 @@ extern enum processor_type mn10300_processor;
 #define CALL_USED_REGISTERS \
   { 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0 \
   , 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 \
-  , 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 \
+  , 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 \
   }
 
 /* Note: The definition of CALL_REALLY_USED_REGISTERS is not
@@ -298,7 +299,7 @@ enum reg_class {
  { 0xfffc0000, 0x3ffff }, /* FP_REGS */		\
  { 0x03fc0000, 0 },	/* FP_ACC_REGS */	\
  { 0x3fdff, 0 }, 	/* GENERAL_REGS */	\
- { 0xffffffff, 0x3ffff } /* ALL_REGS 	*/	\
+ { 0xffffffff, 0x7ffff } /* ALL_REGS 	*/	\
 }
 
 /* The following macro defines cover classes for Integrated Register
@@ -587,6 +588,8 @@ struct cum_arg {int nbytes; };
   ((COUNT == 0)                         \
    ? gen_rtx_MEM (Pmode, arg_pointer_rtx) \
    : (rtx) 0)
+
+#define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (Pmode, MDR_REGNUM)
 
 /* Maximum number of registers that can appear in a valid memory address.  */
 
@@ -765,7 +768,7 @@ struct cum_arg {int nbytes; };
 , "fs0", "fs1", "fs2", "fs3", "fs4", "fs5", "fs6", "fs7" \
 , "fs8", "fs9", "fs10", "fs11", "fs12", "fs13", "fs14", "fs15" \
 , "fs16", "fs17", "fs18", "fs19", "fs20", "fs21", "fs22", "fs23" \
-, "fs24", "fs25", "fs26", "fs27", "fs28", "fs29", "fs30", "fs31" \
+    , "fs24", "fs25", "fs26", "fs27", "fs28", "fs29", "fs30", "fs31", "mdr"	\
 }
 
 #define ADDITIONAL_REGISTER_NAMES \
@@ -810,8 +813,9 @@ struct cum_arg {int nbytes; };
 #define DEFAULT_GDB_EXTENSIONS 1
 
 /* Use dwarf2 debugging info by default.  */
-#undef PREFERRED_DEBUGGING_TYPE
+#undef  PREFERRED_DEBUGGING_TYPE
 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
+#define DWARF2_DEBUGGING_INFO 1
 
 #define DWARF2_ASM_LINE_DEBUG_INFO 1