avr.c (ret_cond_branch): New argument (reverse) added.

	* config/avr/avr.c (ret_cond_branch): New argument (reverse) added.
	If REVERSE nonzero then condition code in X must be reversed.
	(encode_section_info): Optimise if/else.
	(avr_function_value): Fix formatting.

	* config/avr/avr.md (branch): Call to ret_cond_branch changed.
	(difficult_branch): Likewise.
	(rvbranch): Likewise.
	(difficult_rvbranch): Likewise.

	* config/avr/avr-protos.h (ret_cond_branch): Prototype changed.

	* config/avr/libgcc.S: Fix comment.

From-SVN: r39163

gcc/ChangeLog

+Sun Jan 21 09:44:17 2001  Denis Chertykov  <denisc@overta.ru>
+
+	* config/avr/avr.c (ret_cond_branch): New argument (reverse) added.
+	If REVERSE nonzero then condition code in X must be reversed.
+	(encode_section_info): Optimise if/else.
+	(avr_function_value): Fix formatting.
+
+	* config/avr/avr.md (branch): Call to ret_cond_branch changed.
+	(difficult_branch): Likewise.
+	(rvbranch): Likewise.
+	(difficult_rvbranch): Likewise.
+
+	* config/avr/avr-protos.h (ret_cond_branch): Prototype changed.
+
+	* config/avr/libgcc.S: Fix comment.
+
 2001-01-20  Michael Sokolov  <msokolov@ivan.Harhan.ORG>
 
 	* sdbout.c (PUT_SDB_DEF): Fix after last bogus change.

gcc/config/avr/avr-protos.h

@@ -95,7 +95,7 @@ extern const char * out_movsi_mr_r  PARAMS ((rtx insn, rtx op[], int *l));
 extern const char * output_movsisf  PARAMS ((rtx insn, rtx operands[], int *l));
 extern const char * out_tstsi       PARAMS ((rtx insn, int *l));
 extern const char * out_tsthi       PARAMS ((rtx insn, int *l));
-extern const char * ret_cond_branch PARAMS ((RTX_CODE cond, int len));
+extern const char * ret_cond_branch PARAMS ((rtx x, int len, int reverse));
 
 extern const char * ashlqi3_out PARAMS ((rtx insn, rtx operands[], int *len));
 extern const char * ashlhi3_out PARAMS ((rtx insn, rtx operands[], int *len));

gcc/config/avr/avr.c

@@ -1194,14 +1194,19 @@ avr_jump_mode (x, insn)
   return 2;
 }
 
-/* return a AVR condition jump commands.
- LEN is a number returned by avr_jump_mode function.  */
+/* return an AVR condition jump commands.
+   X is a comparison RTX.
+   LEN is a number returned by avr_jump_mode function.
+   if REVERSE nonzero then condition code in X must be reversed.  */
 
 const char *
-ret_cond_branch (cond, len)
-     RTX_CODE cond;
+ret_cond_branch (x, len, reverse)
+     rtx x;
      int len;
+     int reverse;
 {
+  RTX_CODE cond = reverse ? reverse_condition (GET_CODE (x)) : GET_CODE (x);
+  
   switch (cond)
     {
     case GT:
@@ -1262,6 +1267,22 @@ ret_cond_branch (cond, len)
                AS1 (brsh,_PC_+4) CR_TAB
 	       AS1 (jmp,%0)));
     default:
+      if (reverse)
+	{
+	  switch (len)
+	    {
+	    case 1:
+	      return AS1 (br%k1,%0);
+	    case 2:
+	      return (AS1 (br%j1,_PC_+2) CR_TAB
+		      AS1 (rjmp,%0));
+	    default:
+	      return (AS1 (br%j1,_PC_+4) CR_TAB
+		      AS1 (jmp,%0));
+	    }
+	}
+	else
+	  {
 	    switch (len)
 	      {
 	      case 1:
@@ -1274,6 +1295,7 @@ ret_cond_branch (cond, len)
 			AS1 (jmp,%0));
 	      }
 	  }
+    }
   return "";
 }
 
@@ -4736,8 +4758,7 @@ encode_section_info (decl)
 {
   if (TREE_CODE (decl) == FUNCTION_DECL)
     SYMBOL_REF_FLAG (XEXP (DECL_RTL (decl), 0)) = 1;
-
-  if ((TREE_STATIC (decl) || DECL_EXTERNAL (decl))
+  else if ((TREE_STATIC (decl) || DECL_EXTERNAL (decl))
 	   && TREE_CODE (decl) == VAR_DECL
 	   && avr_progmem_p (decl))
     {
@@ -5102,6 +5123,7 @@ avr_function_value (type, func)
      tree func ATTRIBUTE_UNUSED;
 {
   unsigned int offs;
+  
   if (TYPE_MODE (type) != BLKmode)
     return avr_libcall_value (TYPE_MODE (type));
   

gcc/config/avr/avr.md

@@ -1937,8 +1937,7 @@
   "! (GET_CODE (operands[1]) == GT || GET_CODE (operands[1]) == GTU
       || GET_CODE (operands[1]) == LE || GET_CODE (operands[1]) == LEU)"
   "*
-   return ret_cond_branch (GET_CODE (operands[1]),
-                           avr_jump_mode (operands[0],insn));"
+   return ret_cond_branch (operands[1], avr_jump_mode (operands[0],insn), 0);"
   [(set_attr "type" "branch")
    (set_attr "cc" "clobber")])
 
@@ -1952,8 +1951,7 @@
   "(GET_CODE (operands[1]) == GT || GET_CODE (operands[1]) == GTU
     || GET_CODE (operands[1]) == LE || GET_CODE (operands[1]) == LEU)"
   "*
-   return ret_cond_branch (GET_CODE (operands[1]),
-                           avr_jump_mode (operands[0],insn));"
+   return ret_cond_branch (operands[1], avr_jump_mode (operands[0],insn), 0);"
   [(set_attr "type" "branch1")
    (set_attr "cc" "clobber")])
 
@@ -1968,8 +1966,7 @@
   "! (GET_CODE (operands[1]) == GT || GET_CODE (operands[1]) == GTU
       || GET_CODE (operands[1]) == LE || GET_CODE (operands[1]) == LEU)"
   "*
-   return ret_cond_branch (reverse_condition (GET_CODE (operands[1])),
-                           avr_jump_mode (operands[0],insn));"
+   return ret_cond_branch (operands[1], avr_jump_mode (operands[0], insn), 1);"
   [(set_attr "type" "branch1")
    (set_attr "cc" "clobber")])
 
@@ -1982,8 +1979,7 @@
   "(GET_CODE (operands[1]) == GT || GET_CODE (operands[1]) == GTU
     || GET_CODE (operands[1]) == LE || GET_CODE (operands[1]) == LEU)"
   "*
-   return ret_cond_branch (reverse_condition (GET_CODE (operands[1])),
-                           avr_jump_mode (operands[0],insn));"
+   return ret_cond_branch (operands[1], avr_jump_mode (operands[0], insn), 1);"
   [(set_attr "type" "branch")
    (set_attr "cc" "clobber")])
 

gcc/config/avr/libgcc.S

@@ -597,7 +597,7 @@ __prologue_saves__:
 #endif /* defined (L_prologue) */
 
 /*
- * This is a epilogue subroutine
+ * This is an epilogue subroutine
  */
 #if defined (L_epilogue)