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  * "start_line" is the line number of the start position.
  20  */
  21 struct ScopLoc {
  22         ScopLoc() : end(0) {}
  23
  24         unsigned start_line;
  25         unsigned start;
  26         unsigned end;
  27 };
  28
  29 /* Compare two RecordDecl pointers based on their names.
  30  */
  31 struct less_name {
  32         bool operator()(const clang::RecordDecl *x,
  33                         const clang::RecordDecl *y) {
  34                 return x->getNameAsString().compare(y->getNameAsString()) < 0;
  35         }
  36 };
  37
  38 /* A sorted set of RecordDecl pointers.  The actual order is not important,
  39  * only that it is consistent across platforms.
  40  */
  41 typedef std::set<clang::RecordDecl *, less_name> lex_recorddecl_set;
  42
  43 struct PetScan {
  44         clang::Preprocessor &PP;
  45         clang::ASTContext &ast_context;
  46         /* If autodetect is false, then loc contains the location
  47          * of the scop to be extracted.
  48          */
  49         ScopLoc &loc;
  50         isl_ctx *ctx;
  51         pet_options *options;
  52         /* Set if the pet_scop returned by an extract method only
  53          * represents part of the input tree.
  54          */
  55         bool partial;
  56
  57         /* A cache of size expressions for array types as computed
  58          * by PetScan::get_array_size.
  59          */
  60         std::map<const clang::Type *, pet_expr *> type_size;
  61
  62         /* A union of mappings of the form
  63          *      { identifier[] -> [i] : lower_bound <= i <= upper_bound }
  64          */
  65         isl_union_map *value_bounds;
  66
  67         /* The line number of the previously considered Stmt. */
  68         unsigned last_line;
  69         /* The line number of the Stmt currently being considered. */
  70         unsigned current_line;
  71
  72         PetScan(clang::Preprocessor &PP,
  73                 clang::ASTContext &ast_context, ScopLoc &loc,
  74                 pet_options *options, __isl_take isl_union_map *value_bounds) :
  75                 ctx(isl_union_map_get_ctx(value_bounds)), PP(PP),
  76                 ast_context(ast_context), loc(loc),
  77                 options(options), value_bounds(value_bounds),
  78                 partial(false), last_line(0), current_line(0) { }
  79
  80         ~PetScan();
  81
  82         struct pet_scop *scan(clang::FunctionDecl *fd);
  83
  84         static __isl_give isl_val *extract_int(isl_ctx *ctx,
  85                 clang::IntegerLiteral *expr);
  86         __isl_give pet_expr *get_array_size(const clang::Type *type);
  87         struct pet_array *extract_array(isl_ctx *ctx, clang::ValueDecl *decl,
  88                 lex_recorddecl_set *types, __isl_keep pet_context *pc);
  89 private:
  90         void set_current_stmt(clang::Stmt *stmt);
  91
  92         struct pet_scop *scan(clang::Stmt *stmt);
  93
  94         struct pet_scop *scan_arrays(struct pet_scop *scop,
  95                 __isl_keep pet_context *pc);
  96         struct pet_array *extract_array(isl_ctx *ctx,
  97                 std::vector<clang::ValueDecl *> decls,
  98                 lex_recorddecl_set *types, __isl_keep pet_context *pc);
  99         __isl_give pet_expr *set_upper_bounds(__isl_take pet_expr *expr,
 100                 const clang::Type *type, int pos);
 101         struct pet_array *set_upper_bounds(struct pet_array *array,
 102                 const clang::Type *type, __isl_keep pet_context *pc);
 103
 104         __isl_give pet_tree *extract(clang::Stmt *stmt,
 105                 bool skip_declarations = false);
 106         __isl_give pet_tree *extract(clang::StmtRange stmt_range, bool block,
 107                 bool skip_declarations);
 108         __isl_give pet_tree *extract(clang::IfStmt *stmt);
 109         __isl_give pet_tree *extract(clang::WhileStmt *stmt);
 110         __isl_give pet_tree *extract(clang::CompoundStmt *stmt,
 111                 bool skip_declarations = false);
 112         __isl_give pet_tree *extract(clang::LabelStmt *stmt);
 113         __isl_give pet_tree *extract(clang::DeclStmt *expr);
 114
 115         __isl_give pet_loc *construct_pet_loc(clang::SourceRange range,
 116                 bool skip_semi);
 117         __isl_give pet_tree *extract(__isl_take pet_expr *expr,
 118                 clang::SourceRange range, bool skip_semi);
 119         __isl_give pet_tree *update_loc(__isl_take pet_tree *tree,
 120                 clang::Stmt *stmt);
 121
 122         struct pet_scop *extract_scop(__isl_take pet_tree *tree);
 123
 124         clang::BinaryOperator *initialization_assignment(clang::Stmt *init);
 125         clang::Decl *initialization_declaration(clang::Stmt *init);
 126         clang::ValueDecl *extract_induction_variable(clang::BinaryOperator *stmt);
 127         clang::VarDecl *extract_induction_variable(clang::Stmt *init,
 128                                 clang::Decl *stmt);
 129         __isl_give pet_expr *extract_unary_increment(clang::UnaryOperator *op,
 130                                 clang::ValueDecl *iv);
 131         __isl_give pet_expr *extract_binary_increment(
 132                                 clang::BinaryOperator *op,
 133                                 clang::ValueDecl *iv);
 134         __isl_give pet_expr *extract_compound_increment(
 135                                 clang::CompoundAssignOperator *op,
 136                                 clang::ValueDecl *iv);
 137         __isl_give pet_expr *extract_increment(clang::ForStmt *stmt,
 138                                 clang::ValueDecl *iv);
 139         __isl_give pet_tree *extract_for(clang::ForStmt *stmt);
 140
 141         __isl_give pet_expr *extract_assume(clang::Expr *expr);
 142         __isl_give pet_expr *extract_argument(clang::FunctionDecl *fd, int pos,
 143                 clang::Expr *expr);
 144         __isl_give pet_expr *extract_expr(const llvm::APInt &val);
 145         __isl_give pet_expr *extract_expr(clang::Expr *expr);
 146         __isl_give pet_expr *extract_expr(clang::UnaryOperator *expr);
 147         __isl_give pet_expr *extract_expr(clang::BinaryOperator *expr);
 148         __isl_give pet_expr *extract_expr(clang::ImplicitCastExpr *expr);
 149         __isl_give pet_expr *extract_expr(clang::IntegerLiteral *expr);
 150         __isl_give pet_expr *extract_expr(clang::EnumConstantDecl *expr);
 151         __isl_give pet_expr *extract_expr(clang::FloatingLiteral *expr);
 152         __isl_give pet_expr *extract_expr(clang::ParenExpr *expr);
 153         __isl_give pet_expr *extract_expr(clang::ConditionalOperator *expr);
 154         __isl_give pet_expr *extract_expr(clang::CallExpr *expr);
 155         __isl_give pet_expr *extract_expr(clang::CStyleCastExpr *expr);
 156
 157         __isl_give pet_expr *extract_access_expr(clang::QualType qt,
 158                 __isl_take pet_expr *index);
 159         __isl_give pet_expr *extract_access_expr(clang::Expr *expr);
 160         __isl_give pet_expr *extract_access_expr(clang::ValueDecl *decl);
 161
 162         __isl_give pet_expr *extract_index_expr(
 163                 clang::ArraySubscriptExpr *expr);
 164         __isl_give pet_expr *extract_index_expr(clang::Expr *expr);
 165         __isl_give pet_expr *extract_index_expr(clang::ImplicitCastExpr *expr);
 166         __isl_give pet_expr *extract_index_expr(clang::DeclRefExpr *expr);
 167         __isl_give pet_expr *extract_index_expr(clang::ValueDecl *decl);
 168         __isl_give pet_expr *extract_index_expr(clang::MemberExpr *expr);
 169
 170         __isl_give isl_val *extract_int(clang::Expr *expr);
 171         __isl_give isl_val *extract_int(clang::ParenExpr *expr);
 172
 173         void report(clang::Stmt *stmt, unsigned id);
 174         void unsupported(clang::Stmt *stmt);
 175         void report_prototype_required(clang::Stmt *stmt);
 176         void report_missing_increment(clang::Stmt *stmt);
 177 };