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
25 lines
1.1 KiB
YAML
25 lines
1.1 KiB
YAML
# RUN: ld64.lld.darwinold -arch x86_64 -macosx_version_min 10.9 %s -o %t %p/Inputs/x86_64/libSystem.yaml
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# RUN: llvm-objdump --private-headers %t | FileCheck --check-prefix=CHECK-DEFAULT %s
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# RUN: ld64.lld.darwinold -arch x86_64 -macosx_version_min 10.9 %s -o %t -stack_size 31415926000 %p/Inputs/x86_64/libSystem.yaml
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# RUN: llvm-objdump --private-headers %t | FileCheck --check-prefix=CHECK-EXPLICIT %s
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# RUN: not ld64.lld.darwinold -arch x86_64 -stack_size 0x31415926530 %s >/dev/null 2> %t
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# RUN: FileCheck < %t %s --check-prefix=CHECK-ERROR-MISPAGED
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# RUN: not ld64.lld.darwinold -arch x86_64 -stack_size hithere %s >/dev/null 2> %t
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# RUN: FileCheck < %t %s --check-prefix=CHECK-ERROR-NOTHEX
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--- !native
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defined-atoms:
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- name: _main
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scope: global
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content: []
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# CHECK-DEFAULT: cmd LC_MAIN
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# CHECK-DEFAULT: stacksize 0
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# CHECK-EXPLICIT: cmd LC_MAIN
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# CHECK-EXPLICIT: stacksize 3384796143616
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# CHECK-ERROR-MISPAGED: error: stack_size must be a multiple of page size (0x1000)
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# CHECK-ERROR-NOTHEX: error: stack_size expects a hex number
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