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65668c9d82
- Add CompilerInvocation::getPCHHash
This will be used when creating a unique filename for a persistent
precompiled bridging header.
- Automatically generate and use a precompiled briding header
When we're given both -import-objc-header and -pch-output-dir
arguments, we will try to:
- Validate what we think the PCH filename should be for the bridging
header, based on the Swift PCH hash and the clang module hash.
- If we're successful, we'll just use it.
- If it's out of date or something else is wrong, we'll try to
emit it.
- This gives us a single filename which we can `stat` to check for the
validity of our code completion cache, which is keyed off of module
name, module filename, and module file age.
- Cache code completion results from imported modules
If we just have a single .PCH file imported, we can use that file as
part of the key used to cache declarations in a module. Because
multiple files can contribute to the __ObjC module, we've always given
it the phony filename "<imports>", which never exists, so `stat`-ing it
always fails and we never cache declarations in it.
This is extremely problematic for projects with huge bridging headers.
In the case where we have a single PCH import, this can bring warm code
completion times down to about 500ms from over 2-3s, so it can provide a
nice performance win for IDEs.
- Add a new test that performs two code-completion requests with a bridging header.
- Add some -pch-output-dir flags to existing SourceKit tests that import a bridging
header.
rdar://problem/31198982
21 lines
1.2 KiB
Swift
21 lines
1.2 KiB
Swift
// RUN: %target-swift-ide-test -code-completion -source-filename %s -code-completion-token=TOP -import-objc-header %S/Inputs/header.h | %FileCheck %s -check-prefix=CHECK-TOP
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// RUN: %target-swift-ide-test -code-completion -source-filename %s -code-completion-token=TYPE -import-objc-header %S/Inputs/header.h | %FileCheck %s -check-prefix=CHECK-TYPE
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// RUN: rm -rf %t && mkdir -p %t
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// RUN: %target-swift-ide-test -code-completion -pch-output-dir %t -source-filename %s -code-completion-token=TOP -import-objc-header %S/Inputs/header.h | %FileCheck %s -check-prefix=CHECK-TOP
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// RUN: %target-swift-ide-test -code-completion -pch-output-dir %t -source-filename %s -code-completion-token=TYPE -import-objc-header %S/Inputs/header.h | %FileCheck %s -check-prefix=CHECK-TYPE
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// RUN: stat %t/*.pch
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// REQUIRES: objc_interop
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func foo() {
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#^TOP^#
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// CHECK-TOP-NOT: function_as_swift_private
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// CHECK-TOP: Decl[FreeFunction]/OtherModule[__ObjC]: doSomethingInHead({#(arg): Int32#})[#Void#]{{; name=.+$}}
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}
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func bar() {
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let _: #^TYPE^#
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// CHECK-TYPE-DAG: Decl[Class]/OtherModule[__ObjC]: SameName[#SameName#]{{; name=.+$}}
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// CHECK-TYPE-DAG: Decl[Protocol]/OtherModule[__ObjC]: SameNameProtocol[#SameNameProtocol#]{{; name=.+$}}
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}
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