[Bug target/68355] C++ constexpr is passed on stack
mpolacek at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Wed Nov 22 16:07:00 GMT 2017
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68355
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Nov 22 16:06:18 2017
New Revision: 255066
URL: https://gcc.gnu.org/viewcvs?rev=255066&root=gcc&view=rev
Log:
PR c++/60336
PR middle-end/67239
PR target/68355
* c-decl.c (grokdeclarator): Set DECL_PADDING_P on unnamed bit-fields.
* class.c (layout_class_type): Set DECL_PADDING_P on padding.
* decl.c (cxx_init_decl_processing): Set TRANSLATION_UNIT_WARN_EMPTY_P.
(grokdeclarator): Set DECL_PADDING_P on unnamed bit-fields.
* lto.c (compare_tree_sccs_1): Compare TYPE_EMPTY_P and DECL_PADDING_P.
* calls.c (initialize_argument_information): Call
warn_parameter_passing_abi target hook.
(store_one_arg): Use 0 for empty record size. Don't push 0 size
argument onto stack.
(must_pass_in_stack_var_size_or_pad): Return false for empty types.
* common.opt: Update -fabi-version description.
* config/i386/i386.c (init_cumulative_args): Set cum->warn_empty.
(ix86_gimplify_va_arg): Call arg_int_size_in_bytes instead of
int_size_in_bytes.
(ix86_is_empty_record): New function.
(ix86_warn_parameter_passing_abi): New function.
(TARGET_EMPTY_RECORD_P): Redefine.
(TARGET_WARN_PARAMETER_PASSING_ABI): Redefine.
* config/i386/i386.h (CUMULATIVE_ARGS): Add warn_empty.
* doc/tm.texi: Regenerated.
* doc/tm.texi.in (TARGET_EMPTY_RECORD_P,
TARGET_WARN_PARAMETER_PASSING_ABI): Add.
* dwarf2out.c (get_ultimate_context): Move to tree.c.
* explow.c (hard_function_value): Call arg_int_size_in_bytes
instead of int_size_in_bytes.
* expr.c (copy_blkmode_to_reg): Likewise.
* function.c (aggregate_value_p): Return 0 for empty types.
(assign_parm_find_entry_rtl): Call warn_parameter_passing_abi target
hook.
(locate_and_pad_parm): Call arg size_in_bytes instead
size_in_bytes.
* lto-streamer-out.c (hash_tree): Hash TYPE_EMPTY_P and DECL_PADDING_P.
* stor-layout.c (finalize_type_size): Set TYPE_EMPTY_P.
* target.def (empty_record_p, warn_parameter_passing_abi): New target
hooks.
* targhooks.c (hook_void_CUMULATIVE_ARGS_tree): New hook.
(std_gimplify_va_arg_expr): Skip empty records. Call
arg_size_in_bytes instead size_in_bytes.
* targhooks.h (hook_void_CUMULATIVE_ARGS_tree): Declare.
* tree-core.h (tree_type_common): Add empty_flag.
(tree_decl_common): Update comments.
* tree-streamer-in.c (unpack_ts_decl_common_value_fields): Stream
DECL_PADDING_P.
(unpack_ts_type_common_value_fields): Stream TYPE_EMPTY_P.
* tree-streamer-out.c (pack_ts_decl_common_value_fields): Stream
DECL_PADDING_P.
(pack_ts_type_common_value_fields): Stream TYPE_EMPTY_P.
* tree.c (default_is_empty_type): New function.
(default_is_empty_record): New function.
(arg_int_size_in_bytes): New function.
(arg_size_in_bytes): New function.
(get_ultimate_context): New function.
* tree.h: Define TYPE_EMPTY_P, DECL_PADDING_P and
TRANSLATION_UNIT_WARN_EMPTY_P.
(default_is_empty_record, arg_int_size_in_bytes,
arg_size_in_bytes, get_ultimate_context): Declare.
* g++.dg/abi/empty12.C: New test.
* g++.dg/abi/empty12.h: New test.
* g++.dg/abi/empty12a.c: New test.
* g++.dg/abi/empty13.C: New test.
* g++.dg/abi/empty13.h: New test.
* g++.dg/abi/empty13a.c: New test.
* g++.dg/abi/empty14.C: New test.
* g++.dg/abi/empty14.h: New test.
* g++.dg/abi/empty14a.c: New test.
* g++.dg/abi/empty15.C: New test.
* g++.dg/abi/empty15.h: New test.
* g++.dg/abi/empty15a.c: New test.
* g++.dg/abi/empty16.C: New test.
* g++.dg/abi/empty16.h: New test.
* g++.dg/abi/empty16a.c: New test.
* g++.dg/abi/empty17.C: New test.
* g++.dg/abi/empty17.h: New test.
* g++.dg/abi/empty17a.c: New test.
* g++.dg/abi/empty18.C: New test.
* g++.dg/abi/empty18.h: New test.
* g++.dg/abi/empty18a.c: New test.
* g++.dg/abi/empty19.C: New test.
* g++.dg/abi/empty19.h: New test.
* g++.dg/abi/empty19a.c: New test.
* g++.dg/abi/empty20.C: New test.
* g++.dg/abi/empty21.C: New test.
* g++.dg/abi/empty22.C: New test.
* g++.dg/abi/empty22.h: New test.
* g++.dg/abi/empty22a.c: New test.
* g++.dg/abi/empty23.C: New test.
* g++.dg/abi/empty24.C: New test.
* g++.dg/abi/empty25.C: New test.
* g++.dg/abi/empty25.h: New test.
* g++.dg/abi/empty25a.c: New test.
* g++.dg/abi/empty26.C: New test.
* g++.dg/abi/empty26.h: New test.
* g++.dg/abi/empty26a.c: New test.
* g++.dg/abi/empty27.C: New test.
* g++.dg/abi/empty28.C: New test.
* g++.dg/abi/pr60336-1.C: New test.
* g++.dg/abi/pr60336-10.C: New test.
* g++.dg/abi/pr60336-11.C: New test.
* g++.dg/abi/pr60336-12.C: New test.
* g++.dg/abi/pr60336-2.C: New test.
* g++.dg/abi/pr60336-3.C: New test.
* g++.dg/abi/pr60336-4.C: New test.
* g++.dg/abi/pr60336-5.C: New test.
* g++.dg/abi/pr60336-6.C: New test.
* g++.dg/abi/pr60336-7.C: New test.
* g++.dg/abi/pr60336-8.C: New test.
* g++.dg/abi/pr60336-9.C: New test.
* g++.dg/abi/pr68355.C: New test.
* g++.dg/lto/pr60336_0.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/abi/empty12.C
trunk/gcc/testsuite/g++.dg/abi/empty12.h
trunk/gcc/testsuite/g++.dg/abi/empty12a.c
trunk/gcc/testsuite/g++.dg/abi/empty13.C
trunk/gcc/testsuite/g++.dg/abi/empty13.h
trunk/gcc/testsuite/g++.dg/abi/empty13a.c
trunk/gcc/testsuite/g++.dg/abi/empty14.C
trunk/gcc/testsuite/g++.dg/abi/empty14.h
trunk/gcc/testsuite/g++.dg/abi/empty14a.c
trunk/gcc/testsuite/g++.dg/abi/empty15.C
trunk/gcc/testsuite/g++.dg/abi/empty15.h
trunk/gcc/testsuite/g++.dg/abi/empty15a.c
trunk/gcc/testsuite/g++.dg/abi/empty16.C
trunk/gcc/testsuite/g++.dg/abi/empty16.h
trunk/gcc/testsuite/g++.dg/abi/empty16a.c
trunk/gcc/testsuite/g++.dg/abi/empty17.C
trunk/gcc/testsuite/g++.dg/abi/empty17.h
trunk/gcc/testsuite/g++.dg/abi/empty17a.c
trunk/gcc/testsuite/g++.dg/abi/empty18.C
trunk/gcc/testsuite/g++.dg/abi/empty18.h
trunk/gcc/testsuite/g++.dg/abi/empty18a.c
trunk/gcc/testsuite/g++.dg/abi/empty19.C
trunk/gcc/testsuite/g++.dg/abi/empty19.h
trunk/gcc/testsuite/g++.dg/abi/empty19a.c
trunk/gcc/testsuite/g++.dg/abi/empty20.C
trunk/gcc/testsuite/g++.dg/abi/empty21.C
trunk/gcc/testsuite/g++.dg/abi/empty22.C
trunk/gcc/testsuite/g++.dg/abi/empty22.h
trunk/gcc/testsuite/g++.dg/abi/empty22a.c
trunk/gcc/testsuite/g++.dg/abi/empty23.C
trunk/gcc/testsuite/g++.dg/abi/empty24.C
trunk/gcc/testsuite/g++.dg/abi/empty25.C
trunk/gcc/testsuite/g++.dg/abi/empty25.h
trunk/gcc/testsuite/g++.dg/abi/empty25a.c
trunk/gcc/testsuite/g++.dg/abi/empty26.C
trunk/gcc/testsuite/g++.dg/abi/empty26.h
trunk/gcc/testsuite/g++.dg/abi/empty26a.c
trunk/gcc/testsuite/g++.dg/abi/empty27.C
trunk/gcc/testsuite/g++.dg/abi/empty28.C
trunk/gcc/testsuite/g++.dg/abi/pr60336-1.C
trunk/gcc/testsuite/g++.dg/abi/pr60336-10.C
trunk/gcc/testsuite/g++.dg/abi/pr60336-11.C
trunk/gcc/testsuite/g++.dg/abi/pr60336-12.C
trunk/gcc/testsuite/g++.dg/abi/pr60336-2.C
trunk/gcc/testsuite/g++.dg/abi/pr60336-3.C
trunk/gcc/testsuite/g++.dg/abi/pr60336-4.C
trunk/gcc/testsuite/g++.dg/abi/pr60336-5.C
trunk/gcc/testsuite/g++.dg/abi/pr60336-6.C
trunk/gcc/testsuite/g++.dg/abi/pr60336-7.C
trunk/gcc/testsuite/g++.dg/abi/pr60336-8.C
trunk/gcc/testsuite/g++.dg/abi/pr60336-9.C
trunk/gcc/testsuite/g++.dg/abi/pr68355.C
trunk/gcc/testsuite/g++.dg/lto/pr60336_0.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-decl.c
trunk/gcc/calls.c
trunk/gcc/common.opt
trunk/gcc/config/i386/i386.c
trunk/gcc/config/i386/i386.h
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/class.c
trunk/gcc/cp/decl.c
trunk/gcc/doc/tm.texi
trunk/gcc/doc/tm.texi.in
trunk/gcc/dwarf2out.c
trunk/gcc/explow.c
trunk/gcc/expr.c
trunk/gcc/function.c
trunk/gcc/lto-streamer-out.c
trunk/gcc/lto/ChangeLog
trunk/gcc/lto/lto.c
trunk/gcc/stor-layout.c
trunk/gcc/target.def
trunk/gcc/targhooks.c
trunk/gcc/targhooks.h
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-core.h
trunk/gcc/tree-streamer-in.c
trunk/gcc/tree-streamer-out.c
trunk/gcc/tree.c
trunk/gcc/tree.h
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