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https://github.com/apple/swift.git
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Artem Chikin
ee0dc64618
We are seeing a huge slowdown in dependency scanning actions due to much more time spend parsing textual interfaces. I have narrowed this down to a large amount of duplicate interface parsing actions stemming from a lack of checking whether or not a given optional import needs to be queried based on whether or not it has already been queried before. Resovles rdar://172199863
41 lines
2.2 KiB
Swift
41 lines
2.2 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %empty-directory(%t/module-cache)
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// RUN: %empty-directory(%t/inputs)
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// RUN: %empty-directory(%t/inputs/Foo.swiftmodule)
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// RUN: %empty-directory(%t/inputs/Bar.swiftmodule)
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// RUN: split-file %s %t
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// Step 1: Build binary module Foo with 'internal import C' and a .swiftinterface
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// RUN: %target-swift-frontend -emit-module %t/Foo.swift -emit-module-path %t/inputs/Foo.swiftmodule/%target-swiftmodule-name -module-name Foo -emit-module-interface-path %t/inputs/Foo.swiftmodule/%target-swiftinterface-name -I %t/inputs -enable-testing -enable-library-evolution -swift-version 5 -disable-implicit-concurrency-module-import -disable-implicit-string-processing-module-import -parse-stdlib
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// Step 2: Build binary module Bar with 'internal import C' and a .swiftinterface
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// RUN: %target-swift-frontend -emit-module %t/Bar.swift -emit-module-path %t/inputs/Bar.swiftmodule/%target-swiftmodule-name -module-name Bar -emit-module-interface-path %t/inputs/Bar.swiftmodule/%target-swiftinterface-name -I %t/inputs -enable-testing -enable-library-evolution -swift-version 5 -disable-implicit-concurrency-module-import -disable-implicit-string-processing-module-import -parse-stdlib
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// Step 3: Scan dependencies with @testable imports
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// RUN: %target-swift-frontend -scan-dependencies -module-name Test -module-cache-path %t/module-cache -disable-implicit-string-processing-module-import -disable-implicit-concurrency-module-import -parse-stdlib %t/test.swift -o %t/deps.json -I %t/inputs -Rdependency-scan &> %t/remarks.txt
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// RUN: cat %t/remarks.txt | %FileCheck %s
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// Ensure that the optional import 'C' (internal import in both Foo and Bar)
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// is only queried once despite appearing as an optional dependency of both
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// Foo and Bar.
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//
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// CHECK: remark: Number of Swift module queries: '3'
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//--- test.swift
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@testable import Foo
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@testable import Bar
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public func test() {}
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//--- Foo.swift
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internal import C
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public func foo() {}
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//--- Bar.swift
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internal import C
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public func bar() {}
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//--- inputs/C.swiftinterface
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// swift-interface-format-version: 1.0
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// swift-module-flags: -module-name C -disable-implicit-string-processing-module-import -disable-implicit-concurrency-module-import -parse-stdlib -user-module-version 1.0
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public func c() { }
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