415c0cd698
The new Darwin backend for LLD is now able to link reasonably large real-world programs on x86_64. For instance, we have achieved self-hosting for the X86_64 target, where all LLD tests pass when building lld with itself on macOS. As such, we would like to make it the default back-end. The new port is now named `ld64.lld`, and the old port remains accessible as `ld64.lld.darwinold` This [annoucement email][1] has some context. (But note that, unlike what the email says, we are no longer doing this as part of the LLVM 12 branch cut -- instead we will go into LLVM 13.) Numerous mechanical test changes were required to make this change; in the interest of creating something that's reviewable on Phabricator, I've split out the boring changes into a separate diff (D95905). I plan to merge its contents with those in this diff before landing. (@gkm made the original draft of this diff, and he has agreed to let me take over.) [1]: https://lists.llvm.org/pipermail/llvm-dev/2021-January/147665.html Reviewed By: #lld-macho, thakis Differential Revision: https://reviews.llvm.org/D95204
35 lines
1.4 KiB
YAML
35 lines
1.4 KiB
YAML
# RUN: ld64.lld.darwinold -arch x86_64 %s -o %t -r -macosx_version_min 10.8 && llvm-objdump --private-headers %t | FileCheck %s
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# RUN: ld64.lld.darwinold -arch x86_64 %s -o %t -r && llvm-objdump --private-headers %t | FileCheck %s
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# RUN: ld64.lld.darwinold -arch x86_64 %s -o %t -r %p/Inputs/no-version-min-load-command-object.yaml && llvm-objdump --private-headers %t | FileCheck %s --check-prefix=NO_VERSION_MIN
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# If we are emitting an object file, then we only emit a min version load command if the source object file(s) all have
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# version(s) and either known platforms or contain min version load commands themselves.
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--- !mach-o
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arch: x86_64
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file-type: MH_OBJECT
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flags: [ MH_SUBSECTIONS_VIA_SYMBOLS ]
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min-os-version-kind: LC_VERSION_MIN_MACOSX
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min-os-version: 10.8
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sections:
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- segment: __TEXT
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section: __text
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type: S_REGULAR
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attributes: [ S_ATTR_PURE_INSTRUCTIONS, S_ATTR_SOME_INSTRUCTIONS ]
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address: 0x0000000000000000
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content: [ 0x00, 0x00, 0x00, 0x00 ]
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global-symbols:
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- name: _main
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type: N_SECT
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scope: [ N_EXT ]
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sect: 1
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value: 0x0000000000000000
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...
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# CHECK: Load command {{[0-9]*}}
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# CHECK: cmd LC_VERSION_MIN_MACOSX
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# CHECK: cmdsize 16
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# CHECK: version 10.8
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# CHECK: sdk n/a
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# NO_VERSION_MIN-NOT: LC_VERSION_MIN_MACOSX |