2010-05-28 Tobias Burnus <burnus@net-b.de>

[pf3gnuchains/gcc-fork.git] / gcc / target.h

diff --git a/gcc/target.h b/gcc/target.h
index ae3b352..e17cc21 100644 (file)
--- a/gcc/target.h
+++ b/gcc/target.h
@@ -1,5 +1,5 @@
 /* Data structure definitions for a generic GCC target.
-   Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+   Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
    Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify it
@@ -97,6 +97,9 @@ struct _dep;
 /* This is defined in ddg.h .  */
 struct ddg;
 
+/* This is defined in cfgloop.h .  */
+struct loop;
+
 /* Assembler instructions for creating various kinds of integer object.  */
 
 struct asm_int_op
@@ -235,6 +238,18 @@ struct gcc_target
        translation unit.  */
     void (*file_end) (void);
 
+    /* Output any boilerplate text needed at the beginning of an
+       LTO output stream.  */
+    void (*lto_start) (void);
+
+    /* Output any boilerplate text needed at the end of an
+       LTO output stream.  */
+    void (*lto_end) (void);
+
+    /* Output any boilerplace text needed at the end of a
+       translation unit before debug and unwind info is emitted.  */
+    void (*code_end) (void);
+
     /* Output an assembler pseudo-op to declare a library function name
        external.  */
     void (*external_libcall) (rtx);
@@ -467,11 +482,11 @@ struct gcc_target
 
     /* Returns a code for builtin that realizes vectorized version of
        function, or NULL_TREE if not available.  */
-    tree (* builtin_vectorized_function) (unsigned, tree, tree);
+    tree (* builtin_vectorized_function) (tree, tree, tree);
 
-    /* Returns a code for builtin that realizes vectorized version of
-       conversion, or NULL_TREE if not available.  */
-    tree (* builtin_conversion) (unsigned, tree);
+    /* Returns a function declaration for a builtin that realizes the
+       vector conversion, or NULL_TREE if not available.  */
+    tree (* builtin_conversion) (unsigned, tree, tree);
 
     /* Target builtin that implements vector widening multiplication.
        builtin_mul_widen_eve computes the element-by-element products
@@ -516,6 +531,9 @@ struct gcc_target
      form was.  Return true if the switch was valid.  */
   bool (* handle_option) (size_t code, const char *arg, int value);
 
+  /* Handle target-specific parts of specifying -Ofast.  */
+  void (* handle_ofast) (void);
+
   /* Display extra, target specific information in response to a
      --target-help switch.  */
   void (* target_help) (void);
@@ -542,6 +560,10 @@ struct gcc_target
      Ignored if NULL.  */
   const struct attribute_spec *attribute_table;
 
+  /* Return true iff attribute NAME expects a plain identifier as its first
+     argument.  */
+  bool (*attribute_takes_identifier_p) (const_tree name);
+
   /* Return zero if the attributes on TYPE1 and TYPE2 are incompatible,
      one if they are compatible and two if they are nearly compatible
      (which causes a warning to be generated).  */
@@ -597,7 +619,7 @@ struct gcc_target
                                      tree decl, void *params);
 
   /* Fold a target-specific builtin.  */
-  tree (* fold_builtin) (tree fndecl, tree arglist, bool ignore);
+  tree (* fold_builtin) (tree fndecl, int nargs, tree *argp, bool ignore);
 
   /* Returns a code for a target-specific builtin that implements
      reciprocal of the function, or NULL_TREE if not available.  */
@@ -633,6 +655,9 @@ struct gcc_target
   /* Return true if the target supports conditional execution.  */
   bool (* have_conditional_execution) (void);
 
+  /* Return a new value for loop unroll size.  */
+  unsigned (* loop_unroll_adjust) (unsigned nunroll, struct loop *loop);
+
   /* True if the constant X cannot be placed in the constant pool.  */
   bool (* cannot_force_const_mem) (rtx);
 
@@ -641,6 +666,10 @@ struct gcc_target
 
   /* True if X is considered to be commutative.  */
   bool (* commutative_p) (const_rtx, int);
+  
+  /* True if ADDR is an address-expression whose effect depends
+     on the mode of the memory reference it is used in.  */
+  bool (* mode_dependent_address_p) (const_rtx addr);
 
   /* Given an invalid address X for a given machine mode, try machine-specific
      ways to make it legitimate.  Return X or an invalid address on failure.  */
@@ -752,6 +781,12 @@ struct gcc_target
      for further details.  */
   bool (* vector_mode_supported_p) (enum machine_mode mode);
 
+  /* True for MODE if the target expects that registers in this mode will
+     be allocated to registers in a small register class.  The compiler is
+     allowed to use registers explicitly used in the rtl as spill registers
+     but it should prevent extending the lifetime of these registers.  */
+  bool (* small_register_classes_for_mode_p) (enum machine_mode mode);
+
   /* Compute a (partial) cost for rtx X.  Return true if the complete
      cost has been computed, and false if subexpressions should be
      scanned.  In either case, *TOTAL contains the cost result.  */
@@ -809,6 +844,9 @@ struct gcc_target
   /* Create the __builtin_va_list type.  */
   tree (* build_builtin_va_list) (void);
 
+  /* Enumerate the va list variants.  */
+  int (* enum_va_list) (int, const char **, tree *);
+
   /* Get the cfun/fndecl calling abi __builtin_va_list type.  */
   tree (* fn_abi_va_list) (tree);
 
@@ -958,6 +996,10 @@ struct gcc_target
        calling the function FN_NAME.  */
     rtx (*libcall_value) (enum machine_mode, const_rtx);
 
+    /* Return true if REGNO is a possible register number for
+       a function value as seen by the caller.  */
+    bool (*function_value_regno_p) (const unsigned int);
+
     /* Return an rtx for the argument pointer incoming to the
        current function.  */
     rtx (*internal_arg_pointer) (void);