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[SR-1493] -embed-bitcode is broken #44102

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drewcrawford opened this issue May 12, 2016 · 6 comments
Closed

[SR-1493] -embed-bitcode is broken #44102

drewcrawford opened this issue May 12, 2016 · 6 comments
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@belkadan
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself

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@drewcrawford
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Previous ID SR-1493
Radar rdar://problem/26247134
Original Reporter @drewcrawford
Type Bug
Status Resolved
Resolution Done
Environment

swift-DEVELOPMENT-SNAPSHOT-2016-05-09-a
OSX 10.11.4 (15E65)

Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug
Assignee @belkadan
Priority Medium

md5: 76ee38337ecbd7bd1a047a0e6ca47a99

Issue Description:

swiftc -v -embed-bitcode hello_world.swift
Apple Swift version 3.0-dev (LLVM dffa09ffd8, Clang 9f0d189820, Swift 1c720b8f84)
Target: x86_64-apple-macosx10.9
/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2016-05-09-a.xctoolchain/usr/bin/swift -frontend -emit-bc -primary-file hello_world.swift -target x86_64-apple-macosx10.9 -enable-objc-interop -color-diagnostics -module-name hello_world -o /var/folders/vv/z02zhgz508g99fs34mhrkw6c0000gp/T/hello_world-80ba79.bc
/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2016-05-09-a.xctoolchain/usr/bin/swift -frontend -c -primary-file /var/folders/vv/z02zhgz508g99fs34mhrkw6c0000gp/T/hello_world-80ba79.bc -target x86_64-apple-macosx10.9 -module-name hello_world -o /var/folders/vv/z02zhgz508g99fs34mhrkw6c0000gp/T/hello_world-25868b.o -embed-bitcode -disable-llvm-optzns
<unknown>:0: error: unknown argument: '-fembed-bitcode'
<unknown>:0: error: backend command failed with exit code 1 (use -v to see invocation)
@belkadan
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The Swift option has only ever worked with Apple Clangs. We're just now getting -fembed-bitcode upstreamed to Clang, so we should be able to add tests for this soon.

@krzyzanowskim
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I don't know if how it's related but Xcode+bitcode+Swift support is kinda broken in Xcode 8 beta releases. We really hope it won't be overlooked by the whole team, whoever is responsible for that regression.

https://twitter.com/steipete/status/755377159066226692
https://github.com/krzyzanowskim/CryptoSwift/issues/240#issuecomment-233630082

@belkadan
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Not related, and probably something that should be tracked in Radar. Do you know if/where Pete filed it, or have you filed one?

@swift-ci
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Comment by Peter Steinberger (JIRA)

We filed this issue under rdar://27526025. Until Xcode 8b3 this only affected arm64, now as of 8b5 the linker also crashes when it tries to emit armv7 bitcode. Thanks for helping us here. I'm really worried that we might not get this resolved before the GM and that would leave us in a very difficult position and impact thousands of apps using the PSPDFKit SDK - they would all have to disable Bitcode support because of this issue.

@drewcrawford
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Sample project attached to rdar://28068831

@belkadan
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Ah, this happened a long time ago!

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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@belkadan belkadan

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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself
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@drewcrawford @belkadan @krzyzanowskim @swift-ci