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Use llvm.dbg.cu named metadata to collect compile units.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130756 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -342,7 +342,9 @@ height="369">
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that produced it.</p>
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<p>Compile unit descriptors provide the root context for objects declared in a
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specific compilation unit. File descriptors are defined using this context.</p>
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specific compilation unit. File descriptors are defined using this context.
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These descriptors are collected by a named metadata
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<tt>!llvm.dbg.cu</tt>.
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</div>
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@ -51,6 +51,10 @@ void DIBuilder::createCompileUnit(unsigned Lang, StringRef Filename,
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ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeVer)
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};
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TheCU = DICompileUnit(MDNode::get(VMContext, Elts));
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// Create a named metadata so that it is easier to find cu in a module.
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NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.cu");
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NMD->addOperand(TheCU);
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}
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/// createFile - Create a file descriptor to hold debugging information
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