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PR c/65083 notes that some functions in <stdatomic.h> are normal
functions, not generic functions, and so need to have out-of-line
copies that can be called when macro expansion is suppressed (unlike
the generic functions where DR#419 makes it undefined if you suppress
a macro expansion).
This patch adds such out-of-line definitions in libatomic for those
six functions, at a new LIBATOMIC_1.2 symbol version, as trivial
wrappers to the <stdatomic.h> macros, along with declarations of those
functions in <stdatomic.h>. Tests are added that are based on the
corresponding tests for the macros, but with parentheses around the
function names to force the out-of-line functions to be used.
Bootstrapped with no regressions on x86_64-pc-linux-gnu.
gcc:
* ginclude/stdatomic.h (atomic_thread_fence, atomic_signal_fence)
(atomic_flag_test_and_set, atomic_flag_test_and_set_explicit)
(atomic_flag_clear, atomic_flag_clear_explicit): Declare as
functions before defining as macros.
gcc/testsuite:
* gcc.dg/atomic/stdatomic-fence-2.c,
gcc.dg/atomic/stdatomic-flag-2.c: New tests.
libatomic:
* fence.c, flag.c: New files.
* Makefile.am (libatomic_la_SOURCES): Add fence.c and flag.c.
* Makefile.in: Regenerate.
* configure.ac (libtool_VERSION): Change to 3:0:2.
* configure: Regenerate.
* libatomic.map (LIBATOMIC_1.2): New symbol version.
From-SVN: r230578
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gcc:
2013-11-05 Andrew MacLeod <amacleod@redhat.com>
Joseph Myers <joseph@codesourcery.com>
* tree-core.h (enum cv_qualifier): Add TYPE_QUAL_ATOMIC.
(enum tree_index): Add TI_ATOMICQI_TYPE, TI_ATOMICHI_TYPE,
TI_ATOMICSI_TYPE, TI_ATOMICDI_TYPE and TI_ATOMICTI_TYPE.
(struct tree_base): Add atomic_flag field.
* tree.h (TYPE_ATOMIC): New accessor macro.
(TYPE_QUALS, TYPE_QUALS_NO_ADDR_SPACE): Add TYPE_QUAL_ATOMIC.
(TYPE_QUALS_NO_ADDR_SPACE_NO_ATOMIC): New macro.
(atomicQI_type_node, atomicHI_type_node, atomicSI_type_node)
(atomicDI_type_node, atomicTI_type_node): New macros for type
nodes.
* tree.c (set_type_quals): Set TYPE_ATOMIC.
(find_atomic_core_type): New function.
(build_qualified_type): Adjust alignment for qualified types.
(build_atomic_base): New function
(build_common_tree_nodes): Build atomicQI_type_node,
atomicHI_type_node, atomicSI_type_node, atomicDI_type_node and
atomicTI_type_node.
* print-tree.c (print_node): Print atomic qualifier.
* tree-pretty-print.c (dump_generic_node): Print atomic type
attribute.
* target.def (atomic_assign_expand_fenv): New hook.
* doc/tm.texi.in (TARGET_ATOMIC_ASSIGN_EXPAND_FENV): New @hook.
* doc/tm.texi: Regenerate.
* targhooks.c (default_atomic_assign_expand_fenv): New function.
* targhooks.h (default_atomic_assign_expand_fenv): Declare.
* sync-builtins.def (__atomic_feraiseexcept): New built-in
function.
* config/i386/i386-builtin-types.def (VOID_FTYPE_PUSHORT): New
function type.
* config/i386/i386.c (enum ix86_builtins): Add
IX86_BUILTIN_FNSTENV, IX86_BUILTIN_FLDENV, IX86_BUILTIN_FNSTSW and
IX86_BUILTIN_FNCLEX.
(bdesc_special_args): Add __builtin_ia32_fnstenv,
__builtin_ia32_fldenv, __builtin_ia32_fnstsw and
__builtin_ia32_fnclex.
(ix86_expand_builtin): Handle the new built-in functions.
(ix86_atomic_assign_expand_fenv): New function.
(TARGET_ATOMIC_ASSIGN_EXPAND_FENV): New macro.
* config/i386/i386.md (UNSPECV_FNSTENV, UNSPECV_FLDENV)
(UNSPECV_FNSTSW, UNSPECV_FNCLEX): New unspecs.
(fnstenv, fldenv, fnstsw, fnclex): New insns.
gcc/c-family:
2013-11-05 Andrew MacLeod <amacleod@redhat.com>
Joseph Myers <joseph@codesourcery.com>
* c-common.h (enum rid): Add RID_ATOMIC.
* c-common.c (c_common_reswords): Add _Atomic.
(sync_resolve_params): Use TYPE_MAIN_VARIANT on pointer argument.
(keyword_is_type_qualifier): Accept RID_ATOMIC.
* c-format.c (check_format_types): Check for extra _Atomic
qualifiers in format argument.
* c-pretty-print.c (pp_c_cv_qualifiers): Handle atomic qualifier.
(pp_c_type_qualifier_list): Mention _Atomic in comment.
gcc/c:
2013-11-05 Joseph Myers <joseph@codesourcery.com>
Andrew MacLeod <amacleod@redhat.com>
* c-aux-info.c (gen_type): Handle atomic qualifier.
* c-decl.c (validate_proto_after_old_defn): Do not remove atomic
qualifiers when compating types.
(shadow_tag_warned): Handle atomic_p in declspecs.
(quals_from_declspecs): Likewise.
(start_decl): Use c_type_promotes_to when promoting argument
types.
(grokdeclarator): Handle _Atomic.
(get_parm_info): Diagnose any qualifier on "void" as only
parameter.
(store_parm_decls_oldstyle): Do not remove atomic qualifiers when
comparing types. Use c_type_promotes_to when promoting argument
types.
(finish_function): Use c_type_promotes_to when promoting argument
types.
(build_null_declspecs): Handle atomic_p in declspecs.
(declspecs_add_qual): Handle RID_ATOMIC.
* c-parser.c (c_token_starts_typename, c_token_is_qualifier)
(c_token_starts_declspecs): Handle RID_ATOMIC.
(c_parser_declspecs): Handle atomic type specifiers and
qualifiers.
(c_parser_typeof_specifier): Remove const and _Atomic qualifiers
from types of expressions with atomic type.
(c_parser_direct_declarator_inner): Use convert_lvalue_to_rvalue.
(c_parser_attribute_any_word): Handle RID_ATOMIC.
(c_parser_initializer, c_parser_initelt, c_parser_initval)
(c_parser_statement_after_labels, c_parser_switch_statement)
(c_parser_for_statement, c_parser_expr_no_commas)
(c_parser_conditional_expression, c_parser_binary_expression)
(c_parser_cast_expression, c_parser_unary_expression)
(c_parser_postfix_expression)
(c_parser_postfix_expression_after_primary, c_parser_expression):
Use convert_lvalue_to_rvalue.
(c_parser_expression_conv, c_parser_expr_list): Document
conversion of lvalues to rvalues. Use convert_lvalue_to_rvalue.
(c_parser_objc_synchronized_statement): Use
convert_lvalue_to_rvalue.
(c_parser_objc_selector): Handle RID_ATOMIC.
(c_parser_objc_receiver, c_parser_array_notation): Use
convert_lvalue_to_rvalue.
* c-tree.h (ctsk_typeof): Adjust comment to mention use for
_Atomic (type-name).
(struct c_declspecs): Add atomic_p field.
(convert_lvalue_to_rvalue): Declare.
* c-typeck.c (c_type_promotes_to): Promote atomic types to
corresponding atomic types.
(qualify_type): Don't add _Atomic qualifiers from second argument.
(comp_target_types): Do not allow _Atomic mismatches.
(type_lists_compatible_p): Do not remove atomic qualifiers when
comparing types.
(really_atomic_lvalue, convert_lvalue_to_rvalue)
(build_atomic_assign): New functions.
(build_unary_op): Use build_atomic_assign for atomic increment and
decrement.
(build_conditional_expr): Do not treat _Atomic void as a qualified
version of void.
(build_modify_expr): Use build_atomic_assign for atomic LHS.
(find_anonymous_field_with_type, convert_to_anonymous_field)
(convert_for_assignment): Do not remove atomic qualifiers when
comparing types.
(digest_init): Do not accept initialization of arrays of atomic
elements by string constants.
(build_asm_expr): Use convert_lvalue_to_rvalue.
(build_binary_op): Do not treat _Atomic void as a qualified
version of void.
gcc/objc:
2013-11-05 Andrew MacLeod <amacleod@redhat.com>
* objc-act.c (objc_push_parm): Handle atomic qualifier.
gcc/testsuite:
2013-11-05 Joseph Myers <joseph@codesourcery.com>
* lib/target-supports.exp
(check_effective_target_fenv_exceptions): New function.
* lib/atomic-dg.exp, gcc.dg/atomic/atomic.exp: New files.
* gcc.dg/atomic/c11-atomic-exec-1.c,
gcc.dg/atomic/c11-atomic-exec-2.c,
gcc.dg/atomic/c11-atomic-exec-3.c,
gcc.dg/atomic/c11-atomic-exec-4.c,
gcc.dg/atomic/c11-atomic-exec-5.c, gcc.dg/c11-atomic-1.c,
gcc.dg/c11-atomic-2.c, gcc.dg/c11-atomic-3.c,
gcc.dg/c90-atomic-1.c, gcc.dg/c99-atomic-1.c: New tests.
libatomic:
2013-11-05 Joseph Myers <joseph@codesourcery.com>
* fenv.c: New file.
* libatomic.map (LIBATOMIC_1.1): New symbol version. Include
__atomic_feraiseexcept.
* configure.ac (libtool_VERSION): Change to 2:0:1.
(fenv.h): Test for header.
* Makefile.am (libatomic_la_SOURCES): Add fenv.c.
* Makefile.in, auto-config.h.in, configure: Regenerate.
From-SVN: r204544
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