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| author | Martin Sebor <msebor@redhat.com> | 2020-08-14 17:11:53 -0600 |
|---|---|---|
| committer | Martin Sebor <msebor@redhat.com> | 2020-08-14 17:11:53 -0600 |
| commit | 866626efd749ed3e2b7014e88e4340b5a4c73560 (patch) | |
| tree | 9a97cbd204e7f85f1d5388fd61e95f4e6a2ab9ad /gcc/fold-const.h | |
| parent | 2867118ddda9b56d991c16022f7d3d634ed08313 (diff) | |
| download | gcc-866626efd749ed3e2b7014e88e4340b5a4c73560.zip gcc-866626efd749ed3e2b7014e88e4340b5a4c73560.tar.gz gcc-866626efd749ed3e2b7014e88e4340b5a4c73560.tar.bz2 | |
PR tree-optimization/78257 - missing memcmp optimization with constant arrays
gcc/ChangeLog:
PR middle-end/78257
* builtins.c (expand_builtin_memory_copy_args): Rename called function.
(expand_builtin_stpcpy_1): Remove argument from call.
(expand_builtin_memcmp): Rename called function.
(inline_expand_builtin_bytecmp): Same.
* expr.c (convert_to_bytes): New function.
(constant_byte_string): New function (formerly string_constant).
(string_constant): Call constant_byte_string.
(byte_representation): New function.
* expr.h (byte_representation): Declare.
* fold-const-call.c (fold_const_call): Rename called function.
* fold-const.c (c_getstr): Remove an argument.
(getbyterep): Define a new function.
* fold-const.h (c_getstr): Remove an argument.
(getbyterep): Declare a new function.
* gimple-fold.c (gimple_fold_builtin_memory_op): Rename callee.
(gimple_fold_builtin_string_compare): Same.
(gimple_fold_builtin_memchr): Same.
gcc/testsuite/ChangeLog:
PR middle-end/78257
* gcc.dg/memchr.c: New test.
* gcc.dg/memcmp-2.c: New test.
* gcc.dg/memcmp-3.c: New test.
* gcc.dg/memcmp-4.c: New test.
Diffstat (limited to 'gcc/fold-const.h')
| -rw-r--r-- | gcc/fold-const.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/fold-const.h b/gcc/fold-const.h index 0f788a4..0c0f5fd 100644 --- a/gcc/fold-const.h +++ b/gcc/fold-const.h @@ -199,7 +199,8 @@ extern bool expr_not_equal_to (tree t, const wide_int &); extern tree const_unop (enum tree_code, tree, tree); extern tree const_binop (enum tree_code, tree, tree, tree); extern bool negate_mathfn_p (combined_fn); -extern const char *c_getstr (tree, unsigned HOST_WIDE_INT * = NULL); +extern const char *getbyterep (tree, unsigned HOST_WIDE_INT *); +extern const char *c_getstr (tree); extern wide_int tree_nonzero_bits (const_tree); /* Return OFF converted to a pointer offset type suitable as offset for |