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We need this because that global state includes tables like llvm[.compiler].used which would otherwise be sorely missed. This fixes an issue of the clang importer that would cause us to fail whenever we imported a function (say it is marked as static inline) that performs an objective-c method call and we optimize the code. The optimizer would not see the objective-c selector global variable (which is marked private) as being "used by unkown i.e the objc runtime" and would rightly assume it could propagate the value of the global variable's initializer value as a constant to loads of the global variable. Now we call the ClangCodeGenerators translation unit finalization code which will emit these tables and other module flags. We need to take care that we merge those datastrutures with datastructures that we emit from swift's IRGen. rdar://21115194 Swift SVN r29176
16 lines
511 B
Swift
16 lines
511 B
Swift
// RUN: rm -rf %t
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// RUN: mkdir %t
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// RUN: %target-swiftc_driver -emit-module -o %t -module-name Empty -module-link-name swiftEmpty %S/../Inputs/empty.swift
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// RUN: %target-swiftc_driver %s -I %t -emit-ir | FileCheck %s
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// REQUIRES: objc_interop
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import Empty
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// Check that libobjc is always autolinked together with libswiftCore on
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// platforms that support Objective-C.
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// CHECK: !{{.*}} = !{i32 6, !"Linker Options", !{{.*}}}
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// CHECK-DAG: !{{.*}} = !{!"-lswiftCore"}
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// CHECK-DAG: !{{.*}} = !{!"-lobjc"}
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