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
  16 /* The location of the scop, as delimited by scop and endscop
  17  * pragmas by the user.
  18  */
  19 struct ScopLoc {
  20         ScopLoc() : end(0) {}
  21
  22         unsigned start;
  23         unsigned end;
  24 };
  25
  26 /* Compare two RecordDecl pointers based on their names.
  27  */
  28 struct less_name {
  29         bool operator()(const clang::RecordDecl *x,
  30                         const clang::RecordDecl *y) {
  31                 return x->getNameAsString().compare(y->getNameAsString()) < 0;
  32         }
  33 };
  34
  35 /* A sorted set of RecordDecl pointers.  The actual order is not important,
  36  * only that it is consistent across platforms.
  37  */
  38 typedef std::set<clang::RecordDecl *, less_name> lex_recorddecl_set;
  39
  40 struct PetScan {
  41         clang::Preprocessor &PP;
  42         clang::ASTContext &ast_context;
  43         /* If autodetect is false, then loc contains the location
  44          * of the scop to be extracted.
  45          */
  46         ScopLoc &loc;
  47         isl_ctx *ctx;
  48         pet_options *options;
  49         /* The sequence number of the next statement. */
  50         int n_stmt;
  51         /* The sequence number of the next virtual scalar. */
  52         int n_test;
  53         /* Set if the pet_scop returned by an extract method only
  54          * represents part of the input tree.
  55          */
  56         bool partial;
  57         /* Set if nested accesses are allowed in that part of the tree
  58          * that is currently under investigation.
  59          */
  60         bool nesting_enabled;
  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         PetScan(clang::Preprocessor &PP,
  68                 clang::ASTContext &ast_context, ScopLoc &loc,
  69                 pet_options *options, __isl_take isl_union_map *value_bounds) :
  70                 ctx(isl_union_map_get_ctx(value_bounds)), PP(PP),
  71                 ast_context(ast_context), loc(loc),
  72                 options(options), value_bounds(value_bounds),
  73                 n_stmt(0), n_test(0), partial(0), nesting_enabled(false) { }
  74
  75         ~PetScan();
  76
  77         struct pet_scop *scan(clang::FunctionDecl *fd);
  78
  79         static __isl_give isl_val *extract_int(isl_ctx *ctx,
  80                 clang::IntegerLiteral *expr);
  81         static __isl_give isl_val *extract_unsigned(isl_ctx *ctx,
  82                 const llvm::APInt &val);
  83 private:
  84         struct pet_scop *scan(clang::Stmt *stmt, __isl_keep pet_context *pc);
  85
  86         struct pet_scop *scan_arrays(struct pet_scop *scop,
  87                 __isl_keep pet_context *pc);
  88         struct pet_array *extract_array(isl_ctx *ctx, clang::ValueDecl *decl,
  89                 lex_recorddecl_set *types, __isl_keep pet_context *pc);
  90         struct pet_array *extract_array(isl_ctx *ctx,
  91                 std::vector<clang::ValueDecl *> decls,
  92                 lex_recorddecl_set *types, __isl_keep pet_context *pc);
  93         __isl_give pet_expr *set_upper_bounds(__isl_take pet_expr *expr,
  94                 const clang::Type *type, int pos);
  95         struct pet_array *set_upper_bounds(struct pet_array *array,
  96                 const clang::Type *type, __isl_keep pet_context *pc);
  97
  98         struct pet_scop *extract_non_affine_condition(clang::Expr *cond,
  99                 int stmt_nr, __isl_take isl_multi_pw_aff *index,
 100                 __isl_keep pet_context *pc);
 101
 102         struct pet_scop *extract_conditional_assignment(clang::IfStmt *stmt,
 103                 __isl_keep pet_context *pc);
 104         struct pet_scop *extract_non_affine_if(clang::Expr *cond,
 105                 struct pet_scop *scop_then, struct pet_scop *scop_else,
 106                 bool have_else, int stmt_id, __isl_keep pet_context *pc);
 107
 108         struct pet_scop *kill(clang::Stmt *stmt, struct pet_array *array,
 109                 __isl_keep pet_context *pc);
 110
 111         struct pet_scop *extract(clang::Stmt *stmt,
 112                 __isl_keep pet_context *pc, bool skip_declarations = false);
 113         struct pet_scop *extract(clang::StmtRange stmt_range, bool block,
 114                 bool skip_declarations, __isl_keep pet_context *pc);
 115         struct pet_scop *extract(clang::IfStmt *stmt,
 116                 __isl_keep pet_context *pc);
 117         struct pet_scop *extract(clang::WhileStmt *stmt,
 118                 __isl_keep pet_context *pc);
 119         struct pet_scop *extract(clang::CompoundStmt *stmt,
 120                 __isl_keep pet_context *pc, bool skip_declarations = false);
 121         struct pet_scop *extract(clang::LabelStmt *stmt,
 122                 __isl_keep pet_context *pc);
 123         struct pet_scop *extract(clang::ContinueStmt *stmt);
 124         struct pet_scop *extract(clang::BreakStmt *stmt);
 125         struct pet_scop *extract(clang::DeclStmt *expr,
 126                 __isl_keep pet_context *pc);
 127
 128         __isl_give pet_loc *construct_pet_loc(clang::SourceRange range,
 129                 bool skip_semi);
 130         struct pet_scop *extract(__isl_take pet_expr *expr,
 131                 clang::SourceRange range, bool skip_semi,
 132                 __isl_keep pet_context *pc, __isl_take isl_id *label = NULL);
 133         struct pet_stmt *extract_kill(struct pet_scop *scop);
 134
 135         clang::BinaryOperator *initialization_assignment(clang::Stmt *init);
 136         clang::Decl *initialization_declaration(clang::Stmt *init);
 137         clang::ValueDecl *extract_induction_variable(clang::BinaryOperator *stmt);
 138         clang::VarDecl *extract_induction_variable(clang::Stmt *init,
 139                                 clang::Decl *stmt);
 140         __isl_give pet_expr *extract_unary_increment(clang::UnaryOperator *op,
 141                                 clang::ValueDecl *iv);
 142         __isl_give pet_expr *extract_binary_increment(
 143                                 clang::BinaryOperator *op,
 144                                 clang::ValueDecl *iv);
 145         __isl_give pet_expr *extract_compound_increment(
 146                                 clang::CompoundAssignOperator *op,
 147                                 clang::ValueDecl *iv);
 148         __isl_give pet_expr *extract_increment(clang::ForStmt *stmt,
 149                                 clang::ValueDecl *iv);
 150         struct pet_scop *extract_for(clang::ForStmt *stmt,
 151                 __isl_keep pet_context *pc);
 152         struct pet_scop *extract_non_affine_for(clang::ForStmt *stmt,
 153                 clang::ValueDecl *iv,
 154                 __isl_take pet_expr *init, __isl_take pet_expr *inc,
 155                 __isl_take pet_context *pc);
 156         struct pet_scop *extract_infinite_loop(clang::Stmt *body,
 157                 __isl_keep pet_context *pc);
 158         struct pet_scop *extract_infinite_for(clang::ForStmt *stmt,
 159                 __isl_keep pet_context *pc);
 160         struct pet_scop *extract_affine_while(__isl_take isl_pw_aff *pa,
 161                 clang::Stmt *body, __isl_take pet_context *pc);
 162         struct pet_scop *extract_while(clang::Expr *cond, int test_nr,
 163                 int stmt_nr, struct pet_scop *scop_body,
 164                 struct pet_scop *scop_inc, __isl_take pet_context *pc);
 165
 166         __isl_give pet_expr *extract_assume(clang::Expr *expr);
 167         __isl_give pet_expr *extract_argument(clang::FunctionDecl *fd, int pos,
 168                 clang::Expr *expr);
 169         __isl_give pet_expr *extract_expr(const llvm::APInt &val);
 170         __isl_give pet_expr *extract_expr(clang::Expr *expr);
 171         __isl_give pet_expr *extract_expr(clang::UnaryOperator *expr);
 172         __isl_give pet_expr *extract_expr(clang::BinaryOperator *expr);
 173         __isl_give pet_expr *extract_expr(clang::ImplicitCastExpr *expr);
 174         __isl_give pet_expr *extract_expr(clang::IntegerLiteral *expr);
 175         __isl_give pet_expr *extract_expr(clang::FloatingLiteral *expr);
 176         __isl_give pet_expr *extract_expr(clang::ParenExpr *expr);
 177         __isl_give pet_expr *extract_expr(clang::ConditionalOperator *expr);
 178         __isl_give pet_expr *extract_expr(clang::CallExpr *expr);
 179         __isl_give pet_expr *extract_expr(clang::CStyleCastExpr *expr);
 180
 181         __isl_give pet_expr *extract_access_expr(clang::QualType qt,
 182                 __isl_take pet_expr *index);
 183         __isl_give pet_expr *extract_access_expr(clang::Expr *expr);
 184         __isl_give pet_expr *extract_access_expr(clang::ValueDecl *decl);
 185
 186         __isl_give pet_expr *extract_index_expr(
 187                 clang::ArraySubscriptExpr *expr);
 188         __isl_give pet_expr *extract_index_expr(clang::Expr *expr);
 189         __isl_give pet_expr *extract_index_expr(clang::ImplicitCastExpr *expr);
 190         __isl_give pet_expr *extract_index_expr(clang::DeclRefExpr *expr);
 191         __isl_give pet_expr *extract_index_expr(clang::ValueDecl *decl);
 192         __isl_give pet_expr *extract_index_expr(clang::MemberExpr *expr);
 193
 194         __isl_give isl_val *extract_int(clang::Expr *expr);
 195         __isl_give isl_val *extract_int(clang::ParenExpr *expr);
 196
 197         bool is_affine_condition(clang::Expr *expr, __isl_keep pet_context *pc);
 198         __isl_give isl_pw_aff *try_extract_nested_condition(clang::Expr *expr,
 199                 __isl_keep pet_context *pc);
 200         bool is_nested_allowed(__isl_keep isl_pw_aff *pa, pet_scop *scop);
 201
 202         __isl_give isl_pw_aff *extract_condition(clang::Expr *expr,
 203                 __isl_keep pet_context *pc);
 204
 205         void report(clang::Stmt *stmt, unsigned id);
 206         void unsupported(clang::Stmt *stmt);
 207         void report_prototype_required(clang::Stmt *stmt);
 208         void report_missing_increment(clang::Stmt *stmt);
 209
 210         __isl_give pet_context *handle_writes(struct pet_stmt *stmt,
 211                 __isl_take pet_context *pc);
 212         __isl_give pet_context *handle_writes(struct pet_scop *scop,
 213                 __isl_take pet_context *pc);
 214 };