macho: add support for `-dead_strip` (GC sections) and simplify symbol resolution#12140

Merged

kubkon merged 27 commits intomasterfrom

macho-gc-sections

Jul 23, 2022

Commits on Jul 22, 2022

cli: parse -dead_strip MachO linker flag
kubkon
committed
cli: support --gc-sections and --no-gc-sections for Zig sources
kubkon
committed
macho: read the entire file contents into memory at once
kubkon
committed
macho: put parsing into an atom into a helper
kubkon
committed
macho: split section into subsections if requested and/or possible
kubkon
committed
macho: remove unused fields from Atom
kubkon
committed
macho: rework symbol handling to match zld/ELF
kubkon
committed
macho: fix compilation issues on 32bit hosts
kubkon
committed
macho: rework symbol handling for incremental stage2 builds
kubkon
committed
macho: fix marking sections for pruning in GC
kubkon
committed
macho: link atom starting section by orig section id
kubkon
committed
macho: don't store GC roots globally
kubkon
committed
macho: deallocate globals keys
kubkon
committed
macho: fix caching linker line in incremental setting
kubkon
committed
macho: improve logs for dyld info
kubkon
committed
macho: do not store stabs; generate on-the-fly instead
kubkon
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macho: mark __mh_execute_header as ref'd dynamically
kubkon
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macho: limit export info to entrypoint and mh symbol when executable
kubkon
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link-tests: add checkNotPresent and add -dead_strip smoke test
kubkon
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macho: parse data-in-code when writing LINKEDIT segment
kubkon
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macho: do not GC local symbols unless reference dead symbols
kubkon
committed
macho: sort subsection symbols by seniority
kubkon
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macho: move GC code into dead_strip.zig module
kubkon
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macho: fix zig cc and c++ using stage2 llvm
kubkon
committed
macho: dead_strip defaults: off for debug, on for release
kubkon
committed
macho: include __StaticInit input sections as GC roots
kubkon
committed
macho: fix use-after-move in placeDecl
kubkon
committed

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macho: add support for `-dead_strip` (GC sections) and simplify symbol resolution#12140

macho: add support for `-dead_strip` (GC sections) and simplify symbol resolution#12140
kubkon merged 27 commits intomasterfrom
macho-gc-sections

Commits on Jul 22, 2022

cli: parse -dead_strip MachO linker flag

cli: support --gc-sections and --no-gc-sections for Zig sources

macho: read the entire file contents into memory at once

macho: put parsing into an atom into a helper

macho: split section into subsections if requested and/or possible

macho: remove unused fields from Atom

macho: rework symbol handling to match zld/ELF

macho: fix compilation issues on 32bit hosts

macho: rework symbol handling for incremental stage2 builds

macho: fix marking sections for pruning in GC

macho: link atom starting section by orig section id

macho: don't store GC roots globally

macho: deallocate globals keys

macho: fix caching linker line in incremental setting

macho: improve logs for dyld info

macho: do not store stabs; generate on-the-fly instead

macho: mark __mh_execute_header as ref'd dynamically

macho: limit export info to entrypoint and mh symbol when executable

link-tests: add checkNotPresent and add -dead_strip smoke test

macho: parse data-in-code when writing LINKEDIT segment

macho: do not GC local symbols unless reference dead symbols

macho: sort subsection symbols by seniority

macho: move GC code into dead_strip.zig module

macho: fix zig cc and c++ using stage2 llvm

macho: dead_strip defaults: off for debug, on for release

macho: include __StaticInit input sections as GC roots

macho: fix use-after-move in placeDecl