re PR c++/66243 (enum class value is allowed to be initialized by value from other...

[gcc.git] / gcc / ipa-prop.h

diff --git a/gcc/ipa-prop.h b/gcc/ipa-prop.h
index c73367a49455b9eb4d777af3714c0734de4bade0..0488254492acb6b5763c21c818b211a8ee16601d 100644 (file)
--- a/gcc/ipa-prop.h
+++ b/gcc/ipa-prop.h
@@ -1,6 +1,5 @@
 /* Interprocedural analyses.
 /* Interprocedural analyses.

-   Copyright (C) 2005, 2007, 2008, 2009
-   Free Software Foundation, Inc.
+   Copyright (C) 2005-2015 Free Software Foundation, Inc.

 
 This file is part of GCC.
 
 
 This file is part of GCC.
 


@@ -21,17 +20,18 @@ along with GCC; see the file COPYING3.  If not see
 #ifndef IPA_PROP_H
 #define IPA_PROP_H
 
 #ifndef IPA_PROP_H
 #define IPA_PROP_H
 

-#include "tree.h"
-#include "vec.h"
-#include "cgraph.h"
-

 /* The following definitions and interfaces are used by
    interprocedural analyses or parameters.  */
 
 /* The following definitions and interfaces are used by
    interprocedural analyses or parameters.  */
 

+#define IPA_UNDESCRIBED_USE -1
+

 /* ipa-prop.c stuff (ipa-cp, indirect inlining):  */
 
 /* A jump function for a callsite represents the values passed as actual
 /* ipa-prop.c stuff (ipa-cp, indirect inlining):  */
 
 /* A jump function for a callsite represents the values passed as actual

-   arguments of the callsite. There are three main types of values :
+   arguments of the callsite.  They were originally proposed in a paper called
+   "Interprocedural Constant Propagation", by David Callahan, Keith D Cooper,
+   Ken Kennedy, Linda Torczon in Comp86, pg 152-161.  There are three main
+   types of values :

 
    Pass-through - the caller's formal parameter is passed as an actual
                   argument, possibly one simple operation performed on it.
 
    Pass-through - the caller's formal parameter is passed as an actual
                   argument, possibly one simple operation performed on it.


@@ -39,9 +39,6 @@ along with GCC; see the file COPYING3.  If not see
                   argument.
    Unknown      - neither of the above.
 
                   argument.
    Unknown      - neither of the above.
 

-   IPA_JF_CONST_MEMBER_PTR stands for C++ member pointers, it is a special
-   constant in this regard.  Other constants are represented with IPA_JF_CONST.
-

    IPA_JF_ANCESTOR is a special pass-through jump function, which means that
    the result is an address of a part of the object pointed to by the formal
    parameter to which the function refers.  It is mainly intended to represent
    IPA_JF_ANCESTOR is a special pass-through jump function, which means that
    the result is an address of a part of the object pointed to by the formal
    parameter to which the function refers.  It is mainly intended to represent


@@ -53,11 +50,6 @@ along with GCC; see the file COPYING3.  If not see
    parameter or can apply one simple binary operation to it (such jump
    functions are called polynomial).
 
    parameter or can apply one simple binary operation to it (such jump
    functions are called polynomial).
 

-   IPA_JF_KNOWN_TYPE is a special type of an "unknown" function that applies
-   only to pointer parameters.  It means that even though we cannot prove that
-   the passed value is an interprocedural constant, we still know the exact
-   type of the containing object which may be valuable for devirtualization.
-

    Jump functions are computed in ipa-prop.c by function
    update_call_notes_after_inlining.  Some information can be lost and jump
    functions degraded accordingly when inlining, see
    Jump functions are computed in ipa-prop.c by function
    update_call_notes_after_inlining.  Some information can be lost and jump
    functions degraded accordingly when inlining, see


@@ -66,13 +58,22 @@ along with GCC; see the file COPYING3.  If not see
 enum jump_func_type
 {
   IPA_JF_UNKNOWN = 0,  /* newly allocated and zeroed jump functions default */
 enum jump_func_type
 {
   IPA_JF_UNKNOWN = 0,  /* newly allocated and zeroed jump functions default */

-  IPA_JF_KNOWN_TYPE,        /* represented by field base_binfo */

   IPA_JF_CONST,             /* represented by field costant */
   IPA_JF_CONST,             /* represented by field costant */

-  IPA_JF_CONST_MEMBER_PTR,  /* represented by field member_cst */

   IPA_JF_PASS_THROUGH,     /* represented by field pass_through */
   IPA_JF_ANCESTOR          /* represented by field ancestor */
 };
 
   IPA_JF_PASS_THROUGH,     /* represented by field pass_through */
   IPA_JF_ANCESTOR          /* represented by field ancestor */
 };
 

+struct ipa_cst_ref_desc;
+
+/* Structure holding data required to describe a constant jump function.  */
+struct GTY(()) ipa_constant_data
+{
+  /* THe value of the constant.  */
+  tree value;
+  /* Pointer to the structure that describes the reference.  */
+  struct ipa_cst_ref_desc GTY((skip)) *rdesc;
+};
+

 /* Structure holding data required to describe a pass-through jump function.  */
 
 struct GTY(()) ipa_pass_through_data
 /* Structure holding data required to describe a pass-through jump function.  */
 
 struct GTY(()) ipa_pass_through_data


@@ -87,6 +88,13 @@ struct GTY(()) ipa_pass_through_data
      arithmetic operation where the caller's parameter is the first operand and
      operand field from this structure is the second one.  */
   enum tree_code operation;
      arithmetic operation where the caller's parameter is the first operand and
      operand field from this structure is the second one.  */
   enum tree_code operation;

+  /* When the passed value is a pointer, it is set to true only when we are
+     certain that no write to the object it points to has occurred since the
+     caller functions started execution, except for changes noted in the
+     aggregate part of the jump function (see description of
+     ipa_agg_jump_function).  The flag is used only when the operation is
+     NOP_EXPR.  */
+  unsigned agg_preserved : 1;

 };
 
 /* Structure holding data required to describe an ancestor pass-through
 };
 
 /* Structure holding data required to describe an ancestor pass-through


@@ -96,18 +104,54 @@ struct GTY(()) ipa_ancestor_jf_data
 {
   /* Offset of the field representing the ancestor.  */
   HOST_WIDE_INT offset;
 {
   /* Offset of the field representing the ancestor.  */
   HOST_WIDE_INT offset;

-  /* TYpe of the result.  */
-  tree type;

   /* Number of the caller's formal parameter being passed.  */
   int formal_id;
   /* Number of the caller's formal parameter being passed.  */
   int formal_id;

+  /* Flag with the same meaning like agg_preserve in ipa_pass_through_data.  */
+  unsigned agg_preserved : 1;
+};
+
+/* An element in an aggegate part of a jump function describing a known value
+   at a given offset.  When it is part of a pass-through jump function with
+   agg_preserved set or an ancestor jump function with agg_preserved set, all
+   unlisted positions are assumed to be preserved but the value can be a type
+   node, which means that the particular piece (starting at offset and having
+   the size of the type) is clobbered with an unknown value.  When
+   agg_preserved is false or the type of the containing jump function is
+   different, all unlisted parts are assumed to be unknown and all values must
+   fulfill is_gimple_ip_invariant.  */
+
+struct GTY(()) ipa_agg_jf_item
+{
+  /* The offset at which the known value is located within the aggregate.  */
+  HOST_WIDE_INT offset;
+
+  /* The known constant or type if this is a clobber.  */
+  tree value;
+};
+
+
+/* Aggregate jump function - i.e. description of contents of aggregates passed
+   either by reference or value.  */
+
+struct GTY(()) ipa_agg_jump_function
+{
+  /* Description of the individual items.  */
+  vec<ipa_agg_jf_item, va_gc> *items;
+  /* True if the data was passed by reference (as opposed to by value). */
+  bool by_ref;

 };
 
 };
 

-/* Structure holding a C++ member pointer constant.  Holds a pointer to the
-   method and delta offset.  */
-struct GTY(()) ipa_member_ptr_cst
+typedef struct ipa_agg_jump_function *ipa_agg_jump_function_p;
+
+/* Info about pointer alignments. */
+struct GTY(()) ipa_alignment

 {
 {

-  tree pfn;
-  tree delta;
+  /* The data fields below are valid only if known is true.  */
+  bool known;
+  /* See ptr_info_def and get_pointer_alignment_1 for description of these
+     two.  */
+  unsigned align;
+  unsigned misalign;

 };
 
 /* A jump function for a callsite represents the values passed as actual
 };
 
 /* A jump function for a callsite represents the values passed as actual


@@ -115,52 +159,137 @@ struct GTY(()) ipa_member_ptr_cst
    types of jump functions supported.  */
 struct GTY (()) ipa_jump_func
 {
    types of jump functions supported.  */
 struct GTY (()) ipa_jump_func
 {

+  /* Aggregate contants description.  See struct ipa_agg_jump_function and its
+     description.  */
+  struct ipa_agg_jump_function agg;
+
+  /* Information about alignment of pointers. */
+  struct ipa_alignment alignment;
+

   enum jump_func_type type;
   /* Represents a value of a jump function.  pass_through is used only in jump
      function context.  constant represents the actual constant in constant jump
      functions and member_cst holds constant c++ member functions.  */
   union jump_func_value
   {
   enum jump_func_type type;
   /* Represents a value of a jump function.  pass_through is used only in jump
      function context.  constant represents the actual constant in constant jump
      functions and member_cst holds constant c++ member functions.  */
   union jump_func_value
   {

-    tree GTY ((tag ("IPA_JF_KNOWN_TYPE"))) base_binfo;
-    tree GTY ((tag ("IPA_JF_CONST"))) constant;
-    struct ipa_member_ptr_cst GTY ((tag ("IPA_JF_CONST_MEMBER_PTR"))) member_cst;
+    struct ipa_constant_data GTY ((tag ("IPA_JF_CONST"))) constant;

     struct ipa_pass_through_data GTY ((tag ("IPA_JF_PASS_THROUGH"))) pass_through;
     struct ipa_ancestor_jf_data GTY ((tag ("IPA_JF_ANCESTOR"))) ancestor;
   } GTY ((desc ("%1.type"))) value;
 };
 
     struct ipa_pass_through_data GTY ((tag ("IPA_JF_PASS_THROUGH"))) pass_through;
     struct ipa_ancestor_jf_data GTY ((tag ("IPA_JF_ANCESTOR"))) ancestor;
   } GTY ((desc ("%1.type"))) value;
 };
 

-/* All formal parameters in the program have a lattice associated with it
-   computed by the interprocedural stage of IPCP.
-   There are three main values of the lattice:
-   IPA_TOP - unknown,
-   IPA_BOTTOM - non constant,
-   IPA_CONST_VALUE - simple scalar constant,
-   Cval of formal f will have a constant value if all callsites to this
-   function have the same constant value passed to f.
-   Integer and real constants are represented as IPA_CONST_VALUE.  */
-enum ipa_lattice_type
-{
-  IPA_BOTTOM,
-  IPA_CONST_VALUE,
-  IPA_TOP
-};

 
 

-/* All formal parameters in the program have a cval computed by
-   the interprocedural stage of IPCP. See enum ipa_lattice_type for
-   the various types of lattices supported */
-struct ipcp_lattice
+/* Return the constant stored in a constant jump functin JFUNC.  */
+
+static inline tree
+ipa_get_jf_constant (struct ipa_jump_func *jfunc)

 {
 {

-  enum ipa_lattice_type type;
-  tree constant;
-};
+  gcc_checking_assert (jfunc->type == IPA_JF_CONST);
+  return jfunc->value.constant.value;
+}
+
+static inline struct ipa_cst_ref_desc *
+ipa_get_jf_constant_rdesc (struct ipa_jump_func *jfunc)
+{
+  gcc_checking_assert (jfunc->type == IPA_JF_CONST);
+  return jfunc->value.constant.rdesc;
+}
+
+/* Return the operand of a pass through jmp function JFUNC.  */
+
+static inline tree
+ipa_get_jf_pass_through_operand (struct ipa_jump_func *jfunc)
+{
+  gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
+  return jfunc->value.pass_through.operand;
+}
+
+/* Return the number of the caller's formal parameter that a pass through jump
+   function JFUNC refers to.  */
+
+static inline int
+ipa_get_jf_pass_through_formal_id (struct ipa_jump_func *jfunc)
+{
+  gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
+  return jfunc->value.pass_through.formal_id;
+}
+
+/* Return operation of a pass through jump function JFUNC.  */
+
+static inline enum tree_code
+ipa_get_jf_pass_through_operation (struct ipa_jump_func *jfunc)
+{
+  gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
+  return jfunc->value.pass_through.operation;
+}
+
+/* Return the agg_preserved flag of a pass through jump function JFUNC.  */
+
+static inline bool
+ipa_get_jf_pass_through_agg_preserved (struct ipa_jump_func *jfunc)
+{
+  gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
+  return jfunc->value.pass_through.agg_preserved;
+}
+
+/* Return true if pass through jump function JFUNC preserves type
+   information.  */
+
+static inline bool
+ipa_get_jf_pass_through_type_preserved (struct ipa_jump_func *jfunc)
+{
+  gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH);
+  return jfunc->value.pass_through.agg_preserved;
+}
+
+/* Return the offset of an ancestor jump function JFUNC.  */
+
+static inline HOST_WIDE_INT
+ipa_get_jf_ancestor_offset (struct ipa_jump_func *jfunc)
+{
+  gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR);
+  return jfunc->value.ancestor.offset;
+}
+
+/* Return the number of the caller's formal parameter that an ancestor jump
+   function JFUNC refers to.  */
+
+static inline int
+ipa_get_jf_ancestor_formal_id (struct ipa_jump_func *jfunc)
+{
+  gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR);
+  return jfunc->value.ancestor.formal_id;
+}
+
+/* Return the agg_preserved flag of an ancestor jump function JFUNC.  */
+
+static inline bool
+ipa_get_jf_ancestor_agg_preserved (struct ipa_jump_func *jfunc)
+{
+  gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR);
+  return jfunc->value.ancestor.agg_preserved;
+}
+
+/* Return true if ancestor jump function JFUNC presrves type information.  */
+
+static inline bool
+ipa_get_jf_ancestor_type_preserved (struct ipa_jump_func *jfunc)
+{
+  gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR);
+  return jfunc->value.ancestor.agg_preserved;
+}
+
+/* Summary describing a single formal parameter.  */

 
 

-/* Structure describing a single formal parameter.  */

 struct ipa_param_descriptor
 {
 struct ipa_param_descriptor
 {

-  /* IPA-CP lattice.  */
-  struct ipcp_lattice ipcp_lattice;

   /* PARAM_DECL of this parameter.  */
   tree decl;
   /* PARAM_DECL of this parameter.  */
   tree decl;

+  /* If all uses of the parameter are described by ipa-prop structures, this
+     says how many there are.  If any use could not be described by means of
+     ipa-prop structures, this is IPA_UNDESCRIBED_USE.  */
+  int controlled_uses;
+  unsigned int move_cost : 31;

   /* The parameter is used.  */
   unsigned used : 1;
 };
   /* The parameter is used.  */
   unsigned used : 1;
 };


@@ -168,50 +297,54 @@ struct ipa_param_descriptor
 /* ipa_node_params stores information related to formal parameters of functions
    and some other information for interprocedural passes that operate on
    parameters (such as ipa-cp).  */
 /* ipa_node_params stores information related to formal parameters of functions
    and some other information for interprocedural passes that operate on
    parameters (such as ipa-cp).  */

+

 struct ipa_node_params
 {
 struct ipa_node_params
 {

-  /* Number of formal parameters of this function.  When set to 0,
-     this function's parameters would not be analyzed by the different
-     stages of IPA CP.  */
-  int param_count;
-  /* Whether this function is called with variable number of actual
-     arguments.  */
-  unsigned called_with_var_arguments : 1;
-  /* Whether the param uses analysis has already been performed.  */
-  unsigned uses_analysis_done : 1;
-  /* Whether the function is enqueued in an ipa_func_list.  */
-  unsigned node_enqueued : 1;
+  ~ipa_node_params ();
+
+  /* Information about individual formal parameters that are gathered when
+     summaries are generated. */
+  vec<ipa_param_descriptor> descriptors;

   /* Pointer to an array of structures describing individual formal
      parameters.  */
   /* Pointer to an array of structures describing individual formal
      parameters.  */

-  struct ipa_param_descriptor *params;
+  struct ipcp_param_lattices *lattices;

   /* Only for versioned nodes this field would not be NULL,
      it points to the node that IPA cp cloned from.  */
   struct cgraph_node *ipcp_orig_node;
   /* Only for versioned nodes this field would not be NULL,
      it points to the node that IPA cp cloned from.  */
   struct cgraph_node *ipcp_orig_node;

-  /* Meaningful only for original functions.  Expresses the
-     ratio between the direct calls and sum of all invocations of
-     this function (given by profiling info).  It is used to calculate
-     the profiling information of the original function and the versioned
-     one.  */
-  gcov_type count_scale;
+  /* If this node is an ipa-cp clone, these are the known constants that
+     describe what it has been specialized for.  */
+  vec<tree> known_csts;
+  /* If this node is an ipa-cp clone, these are the known polymorphic contexts
+     that describe what it has been specialized for.  */
+  vec<ipa_polymorphic_call_context> known_contexts;
+  /* Whether the param uses analysis and jump function computation has already
+     been performed.  */
+  unsigned analysis_done : 1;
+  /* Whether the function is enqueued in ipa-cp propagation stack.  */
+  unsigned node_enqueued : 1;
+  /* Whether we should create a specialized version based on values that are
+     known to be constant in all contexts.  */
+  unsigned do_clone_for_all_contexts : 1;
+  /* Set if this is an IPA-CP clone for all contexts.  */
+  unsigned is_all_contexts_clone : 1;
+  /* Node has been completely replaced by clones and will be removed after
+     ipa-cp is finished.  */
+  unsigned node_dead : 1;
+  /* Node is involved in a recursion, potentionally indirect.  */
+  unsigned node_within_scc : 1;
+  /* Node is calling a private function called only once.  */
+  unsigned node_calling_single_call : 1;

 };
 
 /* ipa_node_params access functions.  Please use these to access fields that
    are or will be shared among various passes.  */
 
 };
 
 /* ipa_node_params access functions.  Please use these to access fields that
    are or will be shared among various passes.  */
 

-/* Set the number of formal parameters. */
-
-static inline void
-ipa_set_param_count (struct ipa_node_params *info, int count)
-{
-  info->param_count = count;
-}
-

 /* Return the number of formal parameters. */
 
 static inline int
 ipa_get_param_count (struct ipa_node_params *info)
 {
 /* Return the number of formal parameters. */
 
 static inline int
 ipa_get_param_count (struct ipa_node_params *info)
 {

-  return info->param_count;
+  return info->descriptors.length ();

 }
 
 /* Return the declaration of Ith formal parameter of the function corresponding
 }
 
 /* Return the declaration of Ith formal parameter of the function corresponding


@@ -221,66 +354,105 @@ ipa_get_param_count (struct ipa_node_params *info)
 static inline tree
 ipa_get_param (struct ipa_node_params *info, int i)
 {
 static inline tree
 ipa_get_param (struct ipa_node_params *info, int i)
 {

-  return info->params[i].decl;
+  gcc_checking_assert (!flag_wpa);
+  return info->descriptors[i].decl;

 }
 
 }
 

-/* Return the used flag corresponding to the Ith formal parameter of
-   the function associated with INFO.  */
+/* Return the move cost of Ith formal parameter of the function corresponding
+   to INFO.  */

 
 

-static inline bool
-ipa_is_param_used (struct ipa_node_params *info, int i)
+static inline int
+ipa_get_param_move_cost (struct ipa_node_params *info, int i)

 {
 {

-  return info->params[i].used;
+  return info->descriptors[i].move_cost;

 }
 
 }
 

-/* Flag this node as having callers with variable number of arguments.  */
+/* Set the used flag corresponding to the Ith formal parameter of the function
+   associated with INFO to VAL.  */

 
 static inline void
 
 static inline void

-ipa_set_called_with_variable_arg (struct ipa_node_params *info)
+ipa_set_param_used (struct ipa_node_params *info, int i, bool val)

 {
 {

-  info->called_with_var_arguments = 1;
+  info->descriptors[i].used = val;

 }
 
 }
 

-/* Have we detected this node was called with variable number of arguments? */
+/* Return how many uses described by ipa-prop a parameter has or
+   IPA_UNDESCRIBED_USE if there is a use that is not described by these
+   structures.  */
+static inline int
+ipa_get_controlled_uses (struct ipa_node_params *info, int i)
+{
+  /* FIXME: introducing speuclation causes out of bounds access here.  */
+  if (info->descriptors.length () > (unsigned)i)
+    return info->descriptors[i].controlled_uses;
+  return IPA_UNDESCRIBED_USE;
+}

 
 

-static inline bool
-ipa_is_called_with_var_arguments (struct ipa_node_params *info)
+/* Set the controlled counter of a given parameter.  */
+
+static inline void
+ipa_set_controlled_uses (struct ipa_node_params *info, int i, int val)

 {
 {

-  return info->called_with_var_arguments;
+  info->descriptors[i].controlled_uses = val;

 }
 
 }
 

+/* Return the used flag corresponding to the Ith formal parameter of the
+   function associated with INFO.  */

 
 

+static inline bool
+ipa_is_param_used (struct ipa_node_params *info, int i)
+{
+  return info->descriptors[i].used;
+}

 
 

-/* ipa_edge_args stores information related to a callsite and particularly
-   its arguments. It is pointed to by a field in the
-   callsite's corresponding cgraph_edge.  */
-typedef struct GTY(()) ipa_edge_args
+/* Information about replacements done in aggregates for a given node (each
+   node has its linked list).  */
+struct GTY(()) ipa_agg_replacement_value

 {
 {

-  /* Number of actual arguments in this callsite.  When set to 0,
-     this callsite's parameters would not be analyzed by the different
-     stages of IPA CP.  */
-  int argument_count;
-  /* Array of the callsite's jump function of each parameter.  */
-  struct ipa_jump_func GTY ((length ("%h.argument_count"))) *jump_functions;
-} ipa_edge_args_t;
+  /* Next item in the linked list.  */
+  struct ipa_agg_replacement_value *next;
+  /* Offset within the aggregate.  */
+  HOST_WIDE_INT offset;
+  /* The constant value.  */
+  tree value;
+  /* The paramter index.  */
+  int index;
+  /* Whether the value was passed by reference.  */
+  bool by_ref;
+};

 
 

-/* ipa_edge_args access functions.  Please use these to access fields that
-   are or will be shared among various passes.  */
+/* Structure holding information for the transformation phase of IPA-CP.  */

 
 

-/* Set the number of actual arguments. */
+struct GTY(()) ipcp_transformation_summary
+{
+  /* Linked list of known aggregate values.  */
+  ipa_agg_replacement_value *agg_values;
+  /* Alignment information for pointers.  */
+  vec<ipa_alignment, va_gc> *alignments;
+};

 
 

-static inline void
-ipa_set_cs_argument_count (struct ipa_edge_args *args, int count)
+void ipa_set_node_agg_value_chain (struct cgraph_node *node,
+                                  struct ipa_agg_replacement_value *aggvals);
+void ipcp_grow_transformations_if_necessary (void);
+
+/* ipa_edge_args stores information related to a callsite and particularly its
+   arguments.  It can be accessed by the IPA_EDGE_REF macro.  */
+struct GTY(()) ipa_edge_args

 {
 {

-  args->argument_count = count;
-}
+  /* Vector of the callsite's jump function of each parameter.  */
+  vec<ipa_jump_func, va_gc> *jump_functions;
+  vec<ipa_polymorphic_call_context, va_gc> *polymorphic_call_contexts;
+};
+
+/* ipa_edge_args access functions.  Please use these to access fields that
+   are or will be shared among various passes.  */

 
 /* Return the number of actual arguments. */
 
 static inline int
 ipa_get_cs_argument_count (struct ipa_edge_args *args)
 {
 
 /* Return the number of actual arguments. */
 
 static inline int
 ipa_get_cs_argument_count (struct ipa_edge_args *args)
 {

-  return args->argument_count;
+  return vec_safe_length (args->jump_functions);

 }
 
 /* Returns a pointer to the jump function for the ith argument.  Please note
 }
 
 /* Returns a pointer to the jump function for the ith argument.  Please note


@@ -290,29 +462,44 @@ ipa_get_cs_argument_count (struct ipa_edge_args *args)
 static inline struct ipa_jump_func *
 ipa_get_ith_jump_func (struct ipa_edge_args *args, int i)
 {
 static inline struct ipa_jump_func *
 ipa_get_ith_jump_func (struct ipa_edge_args *args, int i)
 {

-  return &args->jump_functions[i];
+  return &(*args->jump_functions)[i];

 }
 
 }
 

-/* Vectors need to have typedefs of structures.  */
-typedef struct ipa_node_params ipa_node_params_t;
+/* Returns a pointer to the polymorphic call context for the ith argument.
+   NULL if contexts are not computed.  */
+static inline struct ipa_polymorphic_call_context *
+ipa_get_ith_polymorhic_call_context (struct ipa_edge_args *args, int i)
+{
+  if (!args->polymorphic_call_contexts)
+    return NULL;
+  return &(*args->polymorphic_call_contexts)[i];
+}

 
 

-/* Types of vectors holding the infos.  */
-DEF_VEC_O (ipa_node_params_t);
-DEF_VEC_ALLOC_O (ipa_node_params_t, heap);
-DEF_VEC_O (ipa_edge_args_t);
-DEF_VEC_ALLOC_O (ipa_edge_args_t, gc);
+/* Function summary for ipa_node_params.  */
+class ipa_node_params_t: public function_summary <ipa_node_params *>
+{
+public:
+  ipa_node_params_t (symbol_table *table):
+    function_summary<ipa_node_params *> (table) { }
+
+  /* Hook that is called by summary when a node is duplicated.  */
+  virtual void duplicate (cgraph_node *node,
+                         cgraph_node *node2,
+                         ipa_node_params *data,
+                         ipa_node_params *data2);
+};

 
 

+/* Function summary where the parameter infos are actually stored. */
+extern ipa_node_params_t *ipa_node_params_sum;
+/* Vector of IPA-CP transformation data for each clone.  */
+extern GTY(()) vec<ipcp_transformation_summary, va_gc> *ipcp_transformations;

 /* Vector where the parameter infos are actually stored. */
 /* Vector where the parameter infos are actually stored. */

-extern VEC (ipa_node_params_t, heap) *ipa_node_params_vector;
-/* Vector where the parameter infos are actually stored. */
-extern GTY(()) VEC (ipa_edge_args_t, gc) *ipa_edge_args_vector;
+extern GTY(()) vec<ipa_edge_args, va_gc> *ipa_edge_args_vector;

 
 /* Return the associated parameter/argument info corresponding to the given
    node/edge.  */
 
 /* Return the associated parameter/argument info corresponding to the given
    node/edge.  */

-#define IPA_NODE_REF(NODE) (VEC_index (ipa_node_params_t, \
-                                      ipa_node_params_vector, (NODE)->uid))
-#define IPA_EDGE_REF(EDGE) (VEC_index (ipa_edge_args_t, \
-                                      ipa_edge_args_vector, (EDGE)->uid))
+#define IPA_NODE_REF(NODE) (ipa_node_params_sum->get (NODE))
+#define IPA_EDGE_REF(EDGE) (&(*ipa_edge_args_vector)[(EDGE)->uid])

 /* This macro checks validity of index returned by
    ipa_get_param_decl_index function.  */
 #define IS_VALID_JUMP_FUNC_INDEX(I) ((I) != -1)
 /* This macro checks validity of index returned by
    ipa_get_param_decl_index function.  */
 #define IS_VALID_JUMP_FUNC_INDEX(I) ((I) != -1)


@@ -321,13 +508,13 @@ extern GTY(()) VEC (ipa_edge_args_t, gc) *ipa_edge_args_vector;
 void ipa_create_all_node_params (void);
 void ipa_create_all_edge_args (void);
 void ipa_free_edge_args_substructures (struct ipa_edge_args *);
 void ipa_create_all_node_params (void);
 void ipa_create_all_edge_args (void);
 void ipa_free_edge_args_substructures (struct ipa_edge_args *);

-void ipa_free_node_params_substructures (struct ipa_node_params *);

 void ipa_free_all_node_params (void);
 void ipa_free_all_edge_args (void);
 void ipa_free_all_node_params (void);
 void ipa_free_all_edge_args (void);

-void ipa_create_all_structures_for_iinln (void);

 void ipa_free_all_structures_after_ipa_cp (void);
 void ipa_free_all_structures_after_iinln (void);
 void ipa_free_all_structures_after_ipa_cp (void);
 void ipa_free_all_structures_after_iinln (void);

+

 void ipa_register_cgraph_hooks (void);
 void ipa_register_cgraph_hooks (void);

+int count_formal_params (tree fndecl);

 
 /* This function ensures the array of node param infos is big enough to
    accommodate a structure for all nodes and reallocates it if not.  */
 
 /* This function ensures the array of node param infos is big enough to
    accommodate a structure for all nodes and reallocates it if not.  */


@@ -335,14 +522,8 @@ void ipa_register_cgraph_hooks (void);
 static inline void
 ipa_check_create_node_params (void)
 {
 static inline void
 ipa_check_create_node_params (void)
 {

-  if (!ipa_node_params_vector)
-    ipa_node_params_vector = VEC_alloc (ipa_node_params_t, heap,
-                                       cgraph_max_uid);
-
-  if (VEC_length (ipa_node_params_t, ipa_node_params_vector)
-      <= (unsigned) cgraph_max_uid)
-    VEC_safe_grow_cleared (ipa_node_params_t, heap,
-                          ipa_node_params_vector, cgraph_max_uid + 1);
+  if (!ipa_node_params_sum)
+    ipa_node_params_sum = new ipa_node_params_t (symtab);

 }
 
 /* This function ensures the array of edge arguments infos is big enough to
 }
 
 /* This function ensures the array of edge arguments infos is big enough to


@@ -351,14 +532,9 @@ ipa_check_create_node_params (void)
 static inline void
 ipa_check_create_edge_args (void)
 {
 static inline void
 ipa_check_create_edge_args (void)
 {

-  if (!ipa_edge_args_vector)
-    ipa_edge_args_vector = VEC_alloc (ipa_edge_args_t, gc,
-                                     cgraph_edge_max_uid);
-
-  if (VEC_length (ipa_edge_args_t, ipa_edge_args_vector)
-      <=  (unsigned) cgraph_edge_max_uid)
-    VEC_safe_grow_cleared (ipa_edge_args_t, gc, ipa_edge_args_vector,
-                          cgraph_edge_max_uid + 1);
+  if (vec_safe_length (ipa_edge_args_vector)
+      <= (unsigned) symtab->edges_max_uid)
+    vec_safe_grow_cleared (ipa_edge_args_vector, symtab->edges_max_uid + 1);

 }
 
 /* Returns true if the array of edge infos is large enough to accommodate an
 }
 
 /* Returns true if the array of edge infos is large enough to accommodate an


@@ -368,47 +544,82 @@ ipa_check_create_edge_args (void)
 static inline bool
 ipa_edge_args_info_available_for_edge_p (struct cgraph_edge *edge)
 {
 static inline bool
 ipa_edge_args_info_available_for_edge_p (struct cgraph_edge *edge)
 {

-  return ((unsigned) edge->uid < VEC_length (ipa_edge_args_t,
-                                            ipa_edge_args_vector));
+  return ((unsigned) edge->uid < vec_safe_length (ipa_edge_args_vector));

 }
 
 }
 

-/* A function list element.  It is used to create a temporary worklist used in
-   the propagation stage of IPCP. (can be used for more IPA optimizations)  */
-struct ipa_func_list
+static inline ipcp_transformation_summary *
+ipcp_get_transformation_summary (cgraph_node *node)

 {
 {

-  struct cgraph_node *node;
-  struct ipa_func_list *next;
-};
-
-/* ipa_func_list interface.  */
-struct ipa_func_list *ipa_init_func_list (void);
-void ipa_push_func_to_list_1 (struct ipa_func_list **, struct cgraph_node *,
-                             struct ipa_node_params *);
-struct cgraph_node *ipa_pop_func_from_list (struct ipa_func_list **);
+  if ((unsigned) node->uid >= vec_safe_length (ipcp_transformations))
+    return NULL;
+  return &(*ipcp_transformations)[node->uid];
+}

 
 

-/* Add cgraph NODE to the worklist WL if it is not already in one.  */
+/* Return the aggregate replacements for NODE, if there are any.  */

 
 

-static inline void
-ipa_push_func_to_list (struct ipa_func_list **wl, struct cgraph_node *node)
+static inline struct ipa_agg_replacement_value *
+ipa_get_agg_replacements_for_node (cgraph_node *node)

 {
 {

-  struct ipa_node_params *info = IPA_NODE_REF (node);
-
-  if (!info->node_enqueued)
-    ipa_push_func_to_list_1 (wl, node, info);
+  ipcp_transformation_summary *ts = ipcp_get_transformation_summary (node);
+  return ts ? ts->agg_values : NULL;

 }
 
 }
 

-void ipa_analyze_node (struct cgraph_node *);
-

 /* Function formal parameters related computations.  */
 void ipa_initialize_node_params (struct cgraph_node *node);
 bool ipa_propagate_indirect_call_infos (struct cgraph_edge *cs,
 /* Function formal parameters related computations.  */
 void ipa_initialize_node_params (struct cgraph_node *node);
 bool ipa_propagate_indirect_call_infos (struct cgraph_edge *cs,

-                                       VEC (cgraph_edge_p, heap) **new_edges);
+                                       vec<cgraph_edge *> *new_edges);
+
+/* Indirect edge and binfo processing.  */
+tree ipa_get_indirect_edge_target (struct cgraph_edge *ie,
+                                  vec<tree> ,
+                                  vec<ipa_polymorphic_call_context>,
+                                  vec<ipa_agg_jump_function_p>,
+                                  bool *);
+struct cgraph_edge *ipa_make_edge_direct_to_target (struct cgraph_edge *, tree,
+                                                   bool speculative = false);
+tree ipa_impossible_devirt_target (struct cgraph_edge *, tree);
+
+/* Functions related to both.  */
+void ipa_analyze_node (struct cgraph_node *);
+
+/* Aggregate jump function related functions.  */
+tree ipa_find_agg_cst_for_param (struct ipa_agg_jump_function *, HOST_WIDE_INT,
+                                bool);
+bool ipa_load_from_parm_agg (struct ipa_node_params *, gimple, tree, int *,
+                            HOST_WIDE_INT *, bool *);

 
 /* Debugging interface.  */
 void ipa_print_node_params (FILE *, struct cgraph_node *node);
 void ipa_print_all_params (FILE *);
 void ipa_print_node_jump_functions (FILE *f, struct cgraph_node *node);
 void ipa_print_all_jump_functions (FILE * f);
 
 /* Debugging interface.  */
 void ipa_print_node_params (FILE *, struct cgraph_node *node);
 void ipa_print_all_params (FILE *);
 void ipa_print_node_jump_functions (FILE *f, struct cgraph_node *node);
 void ipa_print_all_jump_functions (FILE * f);

+void ipcp_verify_propagated_values (void);
+
+extern alloc_pool ipcp_cst_values_pool;
+extern alloc_pool ipcp_poly_ctx_values_pool;
+extern alloc_pool ipcp_sources_pool;
+extern alloc_pool ipcp_agg_lattice_pool;
+
+/* Operation to be performed for the parameter in ipa_parm_adjustment
+   below.  */
+enum ipa_parm_op {
+  IPA_PARM_OP_NONE,
+
+  /* This describes a brand new parameter.
+
+     The field `type' should be set to the new type, `arg_prefix'
+     should be set to the string prefix for the new DECL_NAME, and
+     `new_decl' will ultimately hold the newly created argument.  */
+  IPA_PARM_OP_NEW,
+
+  /* This new parameter is an unmodified parameter at index base_index. */
+  IPA_PARM_OP_COPY,
+
+  /* This adjustment describes a parameter that is about to be removed
+     completely.  Most users will probably need to book keep those so that they
+     don't leave behinfd any non default def ssa names belonging to them.  */
+  IPA_PARM_OP_REMOVE
+};

 
 /* Structure to describe transformations of formal parameters and actual
    arguments.  Each instance describes one new parameter and they are meant to
 
 /* Structure to describe transformations of formal parameters and actual
    arguments.  Each instance describes one new parameter and they are meant to


@@ -429,10 +640,15 @@ struct ipa_parm_adjustment
      be a pointer to this type.  */
   tree type;
 
      be a pointer to this type.  */
   tree type;
 

-  /* The new declaration when creating/replacing a parameter.  Created by
-     ipa_modify_formal_parameters, useful for functions modifying the body
-     accordingly. */
-  tree reduction;
+  /* Alias refrerence type to be used in MEM_REFs when adjusting caller
+     arguments.  */
+  tree alias_ptr_type;
+
+  /* The new declaration when creating/replacing a parameter.  Created
+     by ipa_modify_formal_parameters, useful for functions modifying
+     the body accordingly.  For brand new arguments, this is the newly
+     created argument.  */
+  tree new_decl;

 
   /* New declaration of a substitute variable that we may use to replace all
      non-default-def ssa names when a parm decl is going away.  */
 
   /* New declaration of a substitute variable that we may use to replace all
      non-default-def ssa names when a parm decl is going away.  */


@@ -442,47 +658,61 @@ struct ipa_parm_adjustment
      is NULL), this is going to be its nonlocalized vars value.  */
   tree nonlocal_value;
 
      is NULL), this is going to be its nonlocalized vars value.  */
   tree nonlocal_value;
 

+  /* This holds the prefix to be used for the new DECL_NAME.  */
+  const char *arg_prefix;
+

   /* Offset into the original parameter (for the cases when the new parameter
      is a component of an original one).  */
   HOST_WIDE_INT offset;
 
   /* Offset into the original parameter (for the cases when the new parameter
      is a component of an original one).  */
   HOST_WIDE_INT offset;
 

-  /* Zero based index of the original parameter this one is based on.  (ATM
-     there is no way to insert a new parameter out of the blue because there is
-     no need but if it arises the code can be easily exteded to do so.)  */
+  /* Zero based index of the original parameter this one is based on.  */

   int base_index;
 
   int base_index;
 

-  /* This new parameter is an unmodified parameter at index base_index. */
-  unsigned copy_param : 1;
-
-  /* This adjustment describes a parameter that is about to be removed
-     completely.  Most users will probably need to book keep those so that they
-     don't leave behinfd any non default def ssa names belonging to them.  */
-  unsigned remove_param : 1;
+  /* Whether this parameter is a new parameter, a copy of an old one,
+     or one about to be removed.  */
+  enum ipa_parm_op op;

 
   /* The parameter is to be passed by reference.  */
   unsigned by_ref : 1;
 };
 
 
   /* The parameter is to be passed by reference.  */
   unsigned by_ref : 1;
 };
 

-typedef struct ipa_parm_adjustment ipa_parm_adjustment_t;
-DEF_VEC_O (ipa_parm_adjustment_t);
-DEF_VEC_ALLOC_O (ipa_parm_adjustment_t, heap);
+typedef vec<ipa_parm_adjustment> ipa_parm_adjustment_vec;

 
 

-typedef VEC (ipa_parm_adjustment_t, heap) *ipa_parm_adjustment_vec;
-
-VEC(tree, heap) *ipa_get_vector_of_formal_parms (tree fndecl);
-void ipa_modify_formal_parameters (tree fndecl, ipa_parm_adjustment_vec,
-                                  const char *);
-void ipa_modify_call_arguments (struct cgraph_edge *, gimple,
+vec<tree> ipa_get_vector_of_formal_parms (tree fndecl);
+vec<tree> ipa_get_vector_of_formal_parm_types (tree fntype);
+void ipa_modify_formal_parameters (tree fndecl, ipa_parm_adjustment_vec);
+void ipa_modify_call_arguments (struct cgraph_edge *, gcall *,

                                ipa_parm_adjustment_vec);
 ipa_parm_adjustment_vec ipa_combine_adjustments (ipa_parm_adjustment_vec,
                                                 ipa_parm_adjustment_vec);
 void ipa_dump_param_adjustments (FILE *, ipa_parm_adjustment_vec, tree);
                                ipa_parm_adjustment_vec);
 ipa_parm_adjustment_vec ipa_combine_adjustments (ipa_parm_adjustment_vec,
                                                 ipa_parm_adjustment_vec);
 void ipa_dump_param_adjustments (FILE *, ipa_parm_adjustment_vec, tree);

-
-void ipa_prop_write_jump_functions (cgraph_node_set set);
+void ipa_dump_agg_replacement_values (FILE *f,
+                                     struct ipa_agg_replacement_value *av);
+void ipa_prop_write_jump_functions (void);

 void ipa_prop_read_jump_functions (void);
 void ipa_prop_read_jump_functions (void);

+void ipcp_write_transformation_summaries (void);
+void ipcp_read_transformation_summaries (void);

 void ipa_update_after_lto_read (void);
 void ipa_update_after_lto_read (void);

+int ipa_get_param_decl_index (struct ipa_node_params *, tree);
+tree ipa_value_from_jfunc (struct ipa_node_params *info,
+                          struct ipa_jump_func *jfunc);
+unsigned int ipcp_transform_function (struct cgraph_node *node);
+ipa_polymorphic_call_context ipa_context_from_jfunc (ipa_node_params *,
+                                                    cgraph_edge *,
+                                                    int,
+                                                    ipa_jump_func *);
+void ipa_dump_param (FILE *, struct ipa_node_params *info, int i);
+bool ipa_modify_expr (tree *, bool, ipa_parm_adjustment_vec);
+ipa_parm_adjustment *ipa_get_adjustment_candidate (tree **, bool *,
+                                                  ipa_parm_adjustment_vec,
+                                                  bool);
+

 
 /* From tree-sra.c:  */
 
 /* From tree-sra.c:  */

-bool build_ref_for_offset (tree *, tree, HOST_WIDE_INT, tree, bool);
+tree build_ref_for_offset (location_t, tree, HOST_WIDE_INT, tree,
+                          gimple_stmt_iterator *, bool);
+
+/* In ipa-cp.c  */
+void ipa_cp_c_finalize (void);

 
 #endif /* IPA_PROP_H */
 
 #endif /* IPA_PROP_H */