New POINTER_DIFF_EXPR
commit1af4ebf5985ef2aaac13862654044d84a3cd7ae4
authorMarc Glisse <marc.glisse@inria.fr>
Tue, 21 Nov 2017 18:23:56 +0000 (21 19:23 +0100)
committerMarc Glisse <glisse@gcc.gnu.org>
Tue, 21 Nov 2017 18:23:56 +0000 (21 18:23 +0000)
tree6136f270e536b46d7d9de96d28e38794684035dd
parentffb41aab7a9b8475e773b75fdebd194f4491c9db
New POINTER_DIFF_EXPR

2017-11-21  Marc Glisse  <marc.glisse@inria.fr>

gcc/c/
* c-fold.c (c_fully_fold_internal): Handle POINTER_DIFF_EXPR.
* c-typeck.c (pointer_diff): Use POINTER_DIFF_EXPR.

gcc/c-family/
* c-pretty-print.c (pp_c_additive_expression,
c_pretty_printer::expression): Handle POINTER_DIFF_EXPR.

gcc/cp/
* constexpr.c (cxx_eval_constant_expression,
potential_constant_expression_1): Handle POINTER_DIFF_EXPR.
* cp-gimplify.c (cp_fold): Likewise.
* error.c (dump_expr): Likewise.
* typeck.c (pointer_diff): Use POINTER_DIFF_EXPR.

gcc/
* doc/generic.texi: Document POINTER_DIFF_EXPR, update
POINTER_PLUS_EXPR.
* cfgexpand.c (expand_debug_expr): Handle POINTER_DIFF_EXPR.
* expr.c (expand_expr_real_2): Likewise.
* fold-const.c (const_binop, fold_addr_of_array_ref_difference,
fold_binary_loc): Likewise.
* match.pd (X-X, P+(Q-P), &D-P, (P+N)-P, P-(P+N), (P+M)-(P+N),
P-Q==0, -(A-B), X-Z<Y-Z, (X-Z)-(Y-Z), Z-X<Z-Y, (Z-X)-(Z-Y),
(A-B)+(C-A)): New transformations for POINTER_DIFF_EXPR, based on
MINUS_EXPR transformations.
* optabs-tree.c (optab_for_tree_code): Handle POINTER_DIFF_EXPR.
* tree-cfg.c (verify_expr, verify_gimple_assign_binary): Likewise.
* tree-inline.c (estimate_operator_cost): Likewise.
* tree-pretty-print.c (dump_generic_node, op_code_prio,
op_symbol_code): Likewise.
* tree-vect-stmts.c (vectorizable_operation): Likewise.
* vr-values.c (extract_range_from_binary_expr): Likewise.
* varasm.c (initializer_constant_valid_p_1): Likewise.
* tree.def: New tree code POINTER_DIFF_EXPR.

From-SVN: r255021
24 files changed:
gcc/ChangeLog
gcc/c-family/ChangeLog
gcc/c-family/c-pretty-print.c
gcc/c/ChangeLog
gcc/c/c-fold.c
gcc/c/c-typeck.c
gcc/cfgexpand.c
gcc/cp/ChangeLog
gcc/cp/constexpr.c
gcc/cp/cp-gimplify.c
gcc/cp/error.c
gcc/cp/typeck.c
gcc/doc/generic.texi
gcc/expr.c
gcc/fold-const.c
gcc/match.pd
gcc/optabs-tree.c
gcc/tree-cfg.c
gcc/tree-inline.c
gcc/tree-pretty-print.c
gcc/tree-vect-stmts.c
gcc/tree.def
gcc/varasm.c
gcc/vr-values.c