Disable optimization to work around a compiler bug #9178
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There is a bug in the Swift rebranch that prevents some functions from being optimized in a way that the assembler can handle. This temporarily disables optimizations for these functions until a permanent solution is implemented. Bug: swiftlang/llvm-project#11377
Steelskin requested review from bkhouri, bripeticca, cmcgee1024, daveyc123, dschaefer2, jakepetroules, owenv, plemarquand, rconnell9 and shawnhyam as code owners 
| @swift-ci please smoke test |
owenv approved these changes Sep 23, 2025
jakepetroules approved these changes Sep 23, 2025
| @swift-ci please test |
| @swift-ci please test windows |
bripeticca approved these changes Sep 25, 2025
| Going to merge this to unblock rebranch (CC: @AnthonyLatsis @bnbarham) |
Steelskin added a commit to Steelskin/swift-package-manager that referenced this pull request Oct 7, 2025
The issue has been fixed in the compiler so the workaround is no longer necessary. Bug: swiftlang/llvm-project#11377
Steelskin added a commit to Steelskin/swift-package-manager that referenced this pull request Oct 7, 2025
The issue has been fixed in the compiler so the workaround is no longer necessary. Reverts swiftlang#9178. Bug: swiftlang/llvm-project#11377
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Temporarily disable optimizations for some functions.
Motivation:
There is a bug in the Swift rebranch that prevents some functions from being optimized in a way that the assembler can handle. This temporarily disables optimizations for these functions until a permanent solution is implemented.
Bug: swiftlang/llvm-project#11377
Modifications:
Disable optimizations on Windows for problematic functions.
Result:
The project builds for the Swift rebranch.