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[WebAssembly] Explicily disable comdat support for wasm output

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For now at least.  We clearly need some kind of comdat or
linkonce_odr support for wasm but currently COMDAT is not
supported.

Disable COMDAT support in the same way we do the Mach-O.  This
also causes clang not to generated COMDATs.

Differential Revision: https://reviews.llvm.org/D39873

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@318123 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sam Clegg
2017-11-14 00:49:16 +00:00
parent 6765e2f47d
commit 336b4883e2
4 changed files with 19 additions and 13 deletions
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6
lib/Bitcode/Reader/BitcodeReader.cpp
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@@ -1825,10 +1825,10 @@ Expected<Value *> BitcodeReader::recordValue(SmallVectorImpl<uint64_t> &Record,
auto *GO = dyn_cast<GlobalObject>(V);
if (GO) {
if (GO->getComdat() == reinterpret_cast<Comdat *>(1)) {
if (TT.isOSBinFormatMachO())
GO->setComdat(nullptr);
else
if (TT.supportsCOMDAT())
GO->setComdat(TheModule->getOrInsertComdat(V->getName()));
else
GO->setComdat(nullptr);
}
}
return V;