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c3550e81ce
When turning on directCC1 scanning, swift will ask clang driver to expand all cc1 flags and pass that explicitly on command-line. In such case, if `RC_DEBUG_OPTIONS` env is set on darwin platform, it will cause clang driver to encode all the options it gets and pass those clang driver options as a cc1 options `-dwarf-debug-flags`. After the change, swift scanner will no longer generate a long `-Xcc -dwarf-debug-flag -Xcc <long list of flags>` for later compilation. Losing such information in DWARF doesn't affect swift debugging. It will instead, make command-line a lot shorter, save spaces in swift binary module, and make swift caching build more reliable. rdar://144267483
39 lines
1.8 KiB
Swift
39 lines
1.8 KiB
Swift
// REQUIRES: OS=macosx
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// RUN: %empty-directory(%t)
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// RUN: split-file %s %t
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// RUN: RC_DEBUG_OPTIONS=1 %target-swift-frontend -scan-dependencies -o %t/deps.json -I %t \
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// RUN: -disable-implicit-string-processing-module-import -disable-implicit-concurrency-module-import -parse-stdlib \
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// RUN: -g -file-compilation-dir %t -Xcc -ferror-limit=1 \
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// RUN: %t/test.swift -module-name Test -swift-version 5 -experimental-clang-importer-direct-cc1-scan
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// RUN: %FileCheck %s --check-prefix CHECK-DIRECT-CC1-SCAN --input-file=%t/deps.json
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// CHECK-DIRECT-CC1-SCAN-NOT: -dwarf-debug-flags
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// RUN: %{python} %S/../CAS/Inputs/BuildCommandExtractor.py %t/deps.json A > %t/A.cmd
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// RUN: %swift_frontend_plain @%t/A.cmd
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// RUN: %{python} %S/../CAS/Inputs/GenerateExplicitModuleMap.py %t/deps.json > %t/map.json
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// RUN: %{python} %S/../CAS/Inputs/BuildCommandExtractor.py %t/deps.json Test > %t/MyApp.cmd
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// RUN: echo "\"-disable-implicit-string-processing-module-import\"" >> %t/MyApp.cmd
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// RUN: echo "\"-disable-implicit-concurrency-module-import\"" >> %t/MyApp.cmd
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// RUN: echo "\"-disable-implicit-swift-modules\"" >> %t/MyApp.cmd
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// RUN: echo "\"-explicit-swift-module-map-file\"" >> %t/MyApp.cmd
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// RUN: echo "\"%t/map.json\"" >> %t/MyApp.cmd
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// RUN: %target-swift-frontend -module-name Test -O @%t/MyApp.cmd %t/test.swift -parse-stdlib \
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// RUN: -g -c -o %t/test.o -debug-info-store-invocation
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// RUN: %llvm-dwarfdump %t/test.o --recurse-depth=0 | %FileCheck %s --check-prefix=FLAGS
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// FLAGS: DW_AT_APPLE_flags
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// FLAGS-SAME: -target
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//--- A.swiftinterface
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// swift-interface-format-version: 1.0
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// swift-module-flags: -module-name A -O -disable-implicit-string-processing-module-import -disable-implicit-concurrency-module-import -parse-stdlib -user-module-version 1.0
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public func a() { }
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//--- test.swift
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import A
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func test() {}
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