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Dependency tracking for cached compiled modules (compiled from swiftinterfaces) can lead to a high percentage of the module being SDK-relative paths when -track-system-dependencies is on. Cut down on this by storing directory names in a separate record that gets referenced from each file dependency. (Since a lot of per-file dependencies are header files in a common directory, this is a win.) We can do something more clever in the future, but this is a reasonable start for, say, the overlays. rdar://problem/50449802
55 lines
3.1 KiB
Plaintext
55 lines
3.1 KiB
Plaintext
// swift-interface-format-version: 1.0
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// swift-module-flags: -module-name SystemDependencies
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// RUN: %empty-directory(%t)
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// RUN: cp -r %S/Inputs/mock-sdk %t/mock-sdk
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// RUN: echo 'import SystemDependencies' | %target-swift-frontend -typecheck - -I %S -sdk %t/mock-sdk -module-cache-path %t/MCP -emit-dependencies-path %t/dummy.d
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// RUN: test -f %t/MCP/SystemDependencies*.swiftmodule
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// RUN: %FileCheck -check-prefix NEGATIVE %s < %t/dummy.d
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// RUN: %{python} %S/Inputs/make-old.py %t/MCP/SystemDependencies*.swiftmodule
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// Baseline: running the same command again doesn't rebuild the cached module.
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// RUN: echo 'import SystemDependencies' | %target-swift-frontend -typecheck - -I %S -sdk %t/mock-sdk -module-cache-path %t/MCP -emit-dependencies-path %t/dummy.d
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// RUN: %{python} %S/Inputs/check-is-old.py %t/MCP/SystemDependencies*.swiftmodule
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// Now try changing the contents.
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// RUN: echo "// size change" >> %t/mock-sdk/usr/include/SomeCModule.h
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// RUN: echo 'import SystemDependencies' | %target-swift-frontend -typecheck - -I %S -sdk %t/mock-sdk -module-cache-path %t/MCP -emit-dependencies-path %t/dummy.d
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// RUN: %{python} %S/Inputs/check-is-old.py %t/MCP/SystemDependencies*.swiftmodule
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// Okay, now let's try again with system dependency tracking on.
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// RUN: echo 'import SystemDependencies' | %target-swift-frontend -typecheck - -I %S -sdk %t/mock-sdk -module-cache-path %t/MCP-system -emit-dependencies-path %t/dummy.d -track-system-dependencies
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// RUN: test -f %t/MCP-system/SystemDependencies*.swiftmodule
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// RUN: %FileCheck -check-prefix CHECK %s < %t/dummy.d
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// RUN: llvm-bcanalyzer -dump %t/MCP-system/SystemDependencies*.swiftmodule | %FileCheck -check-prefix CHECK-DUMP %s
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// RUN: %{python} %S/Inputs/make-old.py %t/MCP-system/SystemDependencies*.swiftmodule
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// Baseline: running the same command again doesn't rebuild the cached module.
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// RUN: echo 'import SystemDependencies' | %target-swift-frontend -typecheck - -I %S -sdk %t/mock-sdk -module-cache-path %t/MCP-system -emit-dependencies-path %t/dummy.d -track-system-dependencies
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// RUN: %{python} %S/Inputs/check-is-old.py %t/MCP-system/SystemDependencies*.swiftmodule
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// Now try changing the contents.
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// RUN: echo "// size change" >> %t/mock-sdk/usr/include/SomeCModule.h
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// RUN: echo 'import SystemDependencies' | %target-swift-frontend -typecheck - -I %S -sdk %t/mock-sdk -module-cache-path %t/MCP-system -emit-dependencies-path %t/dummy.d -track-system-dependencies
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// RUN: %{python} %S/Inputs/check-is-new.py %t/MCP-system/SystemDependencies*.swiftmodule
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// Check that it picked a different cache key.
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// RUN: %empty-directory(%t/MCP-combined)
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// RUN: cp %t/MCP/SystemDependencies*.swiftmodule %t/MCP-combined
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// RUN: cp %t/MCP-system/SystemDependencies*.swiftmodule %t/MCP-combined
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// RUN: ls -1 %t/MCP-combined | %FileCheck %s -check-prefix=MODULECACHE
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// NEGATIVE-NOT: SomeCModule.h
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// CHECK: SomeCModule.h
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// CHECK-DUMP-NOT: usr/include
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// CHECK-DUMP: DEPENDENCY_DIRECTORY{{.+}}'usr/include'
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// CHECK-DUMP-NEXT: FILE_DEPENDENCY{{.+}}'module.modulemap'
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// CHECK-DUMP-NEXT: FILE_DEPENDENCY{{.+}}'SomeCModule.h'
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// CHECK-DUMP-NOT: usr/include
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// MODULECACHE-COUNT-2: SystemDependencies-{{[^ ]+}}.swiftmodule
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import SomeCModule
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