c382d03ca8
Second Landing Attempt: This patch enables end to end support for generating ELF interface stubs directly from clang. Now the following: clang -emit-interface-stubs -o libfoo.so a.cpp b.cpp c.cpp will product an ELF binary with visible symbols populated. Visibility attributes and -fvisibility can be used to control what gets populated. * Adding ToolChain support for clang Driver IFS Merge Phase * Implementing a default InterfaceStubs Merge clang Tool, used by ToolChain * Adds support for the clang Driver to involve llvm-ifs on ifs files. * Adds -emit-merged-ifs flag, to tell llvm-ifs to emit a merged ifs text file instead of the final object format (normally ELF) Differential Revision: https://reviews.llvm.org/D63978 llvm-svn: 374061
44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
// REQUIRES: x86-registered-target
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// RUN: %clang -target x86_64-unknown-linux-gnu -o - -emit-interface-stubs -emit-merged-ifs \
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// RUN: -interface-stub-version=experimental-ifs-v1 %s | \
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// RUN: FileCheck -check-prefix=CHECK-TAPI %s
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// RUN: %clang -target x86_64-unknown-linux-gnu -o - -emit-interface-stubs -emit-merged-ifs \
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// RUN: -interface-stub-version=experimental-ifs-v1 %s | \
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// RUN: FileCheck -check-prefix=CHECK-TAPI2 %s
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// RUN: %clang -target x86_64-unknown-linux-gnu -o - -c %s | \
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// RUN: llvm-readelf -s - 2>&1 | \
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// RUN: FileCheck -check-prefix=CHECK-SYMBOLS %s
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// For the following:
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// g()
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// n::S<int>::S()
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// n::S<int>::~S()
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// n::S<int>::func() const
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// n::S<int>::S(n::S<int> const&)
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// We expect these manglings:
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// CHECK-TAPI: Symbols:
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// CHECK-TAPI-NOT: _ZNK1n1SIiEclEv
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// CHECK-TAPI2: Symbols:
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// CHECK-TAPI2: _Z1g
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// CHECK-SYMBOLS-DAG: FUNC GLOBAL DEFAULT {{[0-9]}} _Z1g
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// CHECK-SYMBOLS-DAG: FUNC WEAK HIDDEN {{[0-9]}} _ZNK1n1SIiEclEv
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namespace n {
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template <typename T>
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struct __attribute__((__visibility__("default"))) S {
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S() = default;
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~S() = default;
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int __attribute__((__visibility__(("default")))) func() const {
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return 1844;
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}
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int __attribute__((__visibility__(("hidden")))) operator()() const {
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return 1863;
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}
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};
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} // namespace n
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void g() { n::S<int>()(); }
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