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PR target/26427 PR target/33120 PR testsuite/35710 gcc: * config/i386/darwin.h (ASM_OUTPUT_COMMON): Remove (ASM_OUTPUT_LOCAL): Likewise. * config/darwin-protos.h (darwin_asm_declare_object_name): New. (darwin_output_aligned_bss): Likewise. (darwin_asm_output_aligned_decl_local): Likewise. (darwin_asm_output_aligned_decl_common): Likewise. (darwin_use_anchors_for_symbol_p): Likewise. * config/rs6000/darwin.h (ASM_OUTPUT_COMMON): Remove. (TARGET_ASM_OUTPUT_ANCHOR): Define. (TARGET_USE_ANCHORS_FOR_SYMBOL_P): Define. (DARWIN_SECTION_ANCHORS): Set to 1. * config/darwin.c (emit_aligned_common): New var. (darwin_init_sections): Check that the Darwin private zero-size section marker is in range. (darwin_text_section): Check for zero-sized objects. (darwin_mergeable_string_section): Likewise. (darwin_mergeable_constant_section): Likewise. (machopic_select_section): Adjust to check for zero-sized objects. Assert that OBJC meta data are non-zero sized. (darwin_asm_declare_object_name): New. (darwin_asm_declare_constant_name): Adjust for zero-sized object sections. (BYTES_ZFILL): Define. (darwin_emit_weak_or_comdat): New. (darwin_emit_local_bss): New. (darwin_emit_common): New. (darwin_output_aligned_bss): New. (darwin_asm_output_aligned_decl_common): New. (darwin_asm_output_aligned_decl_local): New. (darwin_file_end): Disable subsections_via_symbols when section anchoring is active. (darwin_asm_output_anchor): Re-enable. (darwin_use_anchors_for_symbol_p): New. (darwin_override_options): Check for versions that can emit aligned common. Update usage of flags to current. * config/darwin-sections.def: Update comments and flags for non-anchor sections. zobj_const_section, zobj_data_section, zobj_bss_section, zobj_const_data_section: New. * config/darwin.h (ASM_DECLARE_OBJECT_NAME): Redefine. (ASM_OUTPUT_ALIGN): Make whitespace output consistent. (L2_MAX_OFILE_ALIGNMENT): Define. (ASM_OUTPUT_ALIGNED_BSS): Define. (ASM_OUTPUT_ALIGNED_DECL_LOCAL): Define. (ASM_OUTPUT_ALIGNED_DECL_COMMON): Define. (SECTION_NO_ANCHOR): Define. (TARGET_ASM_OUTPUT_ANCHOR) Define with a default of NULL. (DARWIN_SECTION_ANCHORS): Define with a default of 0. boehm-gc: * dyn_load.c (GC_register_dynamic_libraries/DARWIN): Add new writable data section names. (GC_dyld_name_for_hdr): Adjust layout. (GC_dyld_image_add): Adjust layout, add new Darwin sections, adjust debug to name the sections. (GC_dyld_image_remove): Adjust layout, remove new Darwin sections, adjust debug to name the sections. (GC_register_dynamic_libraries): Adjust layout. (GC_init_dyld): Likewise. (GC_register_main_static_data): Likewise. gcc/testsuite: * gcc.target/powerpc/darwin-abi-12.c: Adjust for new allocators. * gcc.dg/pr26427.c: Remove redundant warning for powerpc. * gcc.dg/darwin-comm.c: Adjust for new allocators. * gcc.dg/darwin-sections.c: New test. * g++.dg/ext/instantiate2.C: Adjust for new allocators. Co-Authored-By: Mike Stump <mrs@gcc.gnu.org> From-SVN: r167242
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