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Compiler output at least up to serialization should be deterministic at this point, at least when not taking SIL into account. This /should/ mean that changing a function body should not affect the final built swiftmodule, which means downstream targets don't need to be rebuilt. Leaving the previous swiftmodule output in place signals that. A while back I put in a push to get all the non-determinism out of type checking, importing, and serialization itself; it looks like we've finally made it. Let's keep it that way! rdar://problem/20539158 and others Swift SVN r29923
15 lines
1.2 KiB
Swift
15 lines
1.2 KiB
Swift
// RUN: rm -rf %t && mkdir %t
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// RUN: %target-swift-frontend -module-name def_class -emit-module-path %t/def_class.1.swiftmodule %S/Inputs/def_class.swift -disable-objc-attr-requires-foundation-module
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// RUN: %target-swift-frontend -module-name def_class -emit-module-path %t/def_class.2.swiftmodule %S/Inputs/def_class.swift -disable-objc-attr-requires-foundation-module
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// RUN: diff <(llvm-bcanalyzer -dump %t/def_class.1.swiftmodule | sed -e 's/\.[0-9]\.swiftmodule/\.x\.swiftmodule/g') <(llvm-bcanalyzer -dump %t/def_class.2.swiftmodule | sed -e 's/\.[0-9]\.swiftmodule/\.x\.swiftmodule/g')
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// Compiling the same set of files twice, without modifying them (and without
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// generating inlineable SIL) should produce the same swiftmodule. We don't
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// promise more than that at this time...
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// RUN: %S/../Inputs/getmtime.py %t/def_class.1.swiftmodule > %t/orig-mtime.txt
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// RUN: %target-swift-frontend -module-name def_class -emit-module-path %t/def_class.1.swiftmodule %S/Inputs/def_class.swift -disable-objc-attr-requires-foundation-module
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// RUN: diff %t/orig-mtime.txt <(%S/../Inputs/getmtime.py %t/def_class.1.swiftmodule)
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// We shouldn't re-emit the module if it hasn't changed.
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