scan.h

   1 #include <map>
   2
   3 #include <clang/Basic/SourceManager.h>
   4 #include <clang/AST/Decl.h>
   5 #include <clang/AST/Stmt.h>
   6 #include <clang/Lex/Preprocessor.h>
   7
   8 #include <isl/ctx.h>
   9 #include <isl/map.h>
  10 #include <isl/val.h>
  11
  12 #include "context.h"
  13 #include "loc.h"
  14 #include "scop.h"
  15 #include "tree.h"
  16
  17 /* The location of the scop, as delimited by scop and endscop
  18  * pragmas by the user.
  19  */
  20 struct ScopLoc {
  21         ScopLoc() : end(0) {}
  22
  23         unsigned start;
  24         unsigned end;
  25 };
  26
  27 /* Compare two RecordDecl pointers based on their names.
  28  */
  29 struct less_name {
  30         bool operator()(const clang::RecordDecl *x,
  31                         const clang::RecordDecl *y) {
  32                 return x->getNameAsString().compare(y->getNameAsString()) < 0;
  33         }
  34 };
  35
  36 /* A sorted set of RecordDecl pointers.  The actual order is not important,
  37  * only that it is consistent across platforms.
  38  */
  39 typedef std::set<clang::RecordDecl *, less_name> lex_recorddecl_set;
  40
  41 struct PetScan {
  42         clang::Preprocessor &PP;
  43         clang::ASTContext &ast_context;
  44         /* If autodetect is false, then loc contains the location
  45          * of the scop to be extracted.
  46          */
  47         ScopLoc &loc;
  48         isl_ctx *ctx;
  49         pet_options *options;
  50         /* Set if the pet_scop returned by an extract method only
  51          * represents part of the input tree.
  52          */
  53         bool partial;
  54
  55         /* A cache of size expressions for array types as computed
  56          * by PetScan::get_array_size.
  57          */
  58         std::map<const clang::Type *, pet_expr *> type_size;
  59
  60         /* A union of mappings of the form
  61          *      { identifier[] -> [i] : lower_bound <= i <= upper_bound }
  62          */
  63         isl_union_map *value_bounds;
  64
  65         PetScan(clang::Preprocessor &PP,
  66                 clang::ASTContext &ast_context, ScopLoc &loc,
  67                 pet_options *options, __isl_take isl_union_map *value_bounds) :
  68                 ctx(isl_union_map_get_ctx(value_bounds)), PP(PP),
  69                 ast_context(ast_context), loc(loc),
  70                 options(options), value_bounds(value_bounds),
  71                 partial(false) { }
  72
  73         ~PetScan();
  74
  75         struct pet_scop *scan(clang::FunctionDecl *fd);
  76
  77         static __isl_give isl_val *extract_int(isl_ctx *ctx,
  78                 clang::IntegerLiteral *expr);
  79         __isl_give pet_expr *get_array_size(const clang::Type *type);
  80         struct pet_array *extract_array(isl_ctx *ctx, clang::ValueDecl *decl,
  81                 lex_recorddecl_set *types, __isl_keep pet_context *pc);
  82 private:
  83         struct pet_scop *scan(clang::Stmt *stmt);
  84
  85         struct pet_scop *scan_arrays(struct pet_scop *scop,
  86                 __isl_keep pet_context *pc);
  87         struct pet_array *extract_array(isl_ctx *ctx,
  88                 std::vector<clang::ValueDecl *> decls,
  89                 lex_recorddecl_set *types, __isl_keep pet_context *pc);
  90         __isl_give pet_expr *set_upper_bounds(__isl_take pet_expr *expr,
  91                 const clang::Type *type, int pos);
  92         struct pet_array *set_upper_bounds(struct pet_array *array,
  93                 const clang::Type *type, __isl_keep pet_context *pc);
  94
  95         __isl_give pet_tree *extract(clang::Stmt *stmt,
  96                 bool skip_declarations = false);
  97         __isl_give pet_tree *extract(clang::StmtRange stmt_range, bool block,
  98                 bool skip_declarations);
  99         __isl_give pet_tree *extract(clang::IfStmt *stmt);
 100         __isl_give pet_tree *extract(clang::WhileStmt *stmt);
 101         __isl_give pet_tree *extract(clang::CompoundStmt *stmt,
 102                 bool skip_declarations = false);
 103         __isl_give pet_tree *extract(clang::LabelStmt *stmt);
 104         __isl_give pet_tree *extract(clang::DeclStmt *expr);
 105
 106         __isl_give pet_loc *construct_pet_loc(clang::SourceRange range,
 107                 bool skip_semi);
 108         __isl_give pet_tree *extract(__isl_take pet_expr *expr,
 109                 clang::SourceRange range, bool skip_semi);
 110         __isl_give pet_tree *update_loc(__isl_take pet_tree *tree,
 111                 clang::Stmt *stmt);
 112
 113         struct pet_scop *extract_scop(__isl_take pet_tree *tree);
 114
 115         clang::BinaryOperator *initialization_assignment(clang::Stmt *init);
 116         clang::Decl *initialization_declaration(clang::Stmt *init);
 117         clang::ValueDecl *extract_induction_variable(clang::BinaryOperator *stmt);
 118         clang::VarDecl *extract_induction_variable(clang::Stmt *init,
 119                                 clang::Decl *stmt);
 120         __isl_give pet_expr *extract_unary_increment(clang::UnaryOperator *op,
 121                                 clang::ValueDecl *iv);
 122         __isl_give pet_expr *extract_binary_increment(
 123                                 clang::BinaryOperator *op,
 124                                 clang::ValueDecl *iv);
 125         __isl_give pet_expr *extract_compound_increment(
 126                                 clang::CompoundAssignOperator *op,
 127                                 clang::ValueDecl *iv);
 128         __isl_give pet_expr *extract_increment(clang::ForStmt *stmt,
 129                                 clang::ValueDecl *iv);
 130         __isl_give pet_tree *extract_for(clang::ForStmt *stmt);
 131
 132         __isl_give pet_expr *extract_assume(clang::Expr *expr);
 133         __isl_give pet_expr *extract_argument(clang::FunctionDecl *fd, int pos,
 134                 clang::Expr *expr);
 135         __isl_give pet_expr *extract_expr(const llvm::APInt &val);
 136         __isl_give pet_expr *extract_expr(clang::Expr *expr);
 137         __isl_give pet_expr *extract_expr(clang::UnaryOperator *expr);
 138         __isl_give pet_expr *extract_expr(clang::BinaryOperator *expr);
 139         __isl_give pet_expr *extract_expr(clang::ImplicitCastExpr *expr);
 140         __isl_give pet_expr *extract_expr(clang::IntegerLiteral *expr);
 141         __isl_give pet_expr *extract_expr(clang::EnumConstantDecl *expr);
 142         __isl_give pet_expr *extract_expr(clang::FloatingLiteral *expr);
 143         __isl_give pet_expr *extract_expr(clang::ParenExpr *expr);
 144         __isl_give pet_expr *extract_expr(clang::ConditionalOperator *expr);
 145         __isl_give pet_expr *extract_expr(clang::CallExpr *expr);
 146         __isl_give pet_expr *extract_expr(clang::CStyleCastExpr *expr);
 147
 148         __isl_give pet_expr *extract_access_expr(clang::QualType qt,
 149                 __isl_take pet_expr *index);
 150         __isl_give pet_expr *extract_access_expr(clang::Expr *expr);
 151         __isl_give pet_expr *extract_access_expr(clang::ValueDecl *decl);
 152
 153         __isl_give pet_expr *extract_index_expr(
 154                 clang::ArraySubscriptExpr *expr);
 155         __isl_give pet_expr *extract_index_expr(clang::Expr *expr);
 156         __isl_give pet_expr *extract_index_expr(clang::ImplicitCastExpr *expr);
 157         __isl_give pet_expr *extract_index_expr(clang::DeclRefExpr *expr);
 158         __isl_give pet_expr *extract_index_expr(clang::ValueDecl *decl);
 159         __isl_give pet_expr *extract_index_expr(clang::MemberExpr *expr);
 160
 161         __isl_give isl_val *extract_int(clang::Expr *expr);
 162         __isl_give isl_val *extract_int(clang::ParenExpr *expr);
 163
 164         void report(clang::Stmt *stmt, unsigned id);
 165         void unsupported(clang::Stmt *stmt);
 166         void report_prototype_required(clang::Stmt *stmt);
 167         void report_missing_increment(clang::Stmt *stmt);
 168 };