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Handle attribute(used) global variables that are i8.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46090 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -101,20 +101,21 @@ bool StripSymbols::runOnModule(Module &M) {
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// If we're not just stripping debug info, strip all symbols from the
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// functions and the names from any internal globals.
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if (!OnlyDebugInfo) {
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SmallPtrSet<const Constant *, 8> llvmUsedValues;
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Value *LLVMUsed = M.getValueSymbolTable().lookup("llvm.used");
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if (LLVMUsed) {
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SmallPtrSet<const GlobalValue*, 8> llvmUsedValues;
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if (GlobalVariable *LLVMUsed = M.getGlobalVariable("llvm.used")) {
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llvmUsedValues.insert(LLVMUsed);
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// Collect values that are preserved as per explicit request.
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// llvm.used is used to list these values.
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if (GlobalVariable *GV = dyn_cast<GlobalVariable>(LLVMUsed)) {
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if (ConstantArray *InitList =
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dyn_cast<ConstantArray>(GV->getInitializer())) {
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for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
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if (ConstantExpr *CE =
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dyn_cast<ConstantExpr>(InitList->getOperand(i)))
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if (CE->isCast())
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llvmUsedValues.insert(CE->getOperand(0));
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}
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if (ConstantArray *Inits =
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dyn_cast<ConstantArray>(LLVMUsed->getInitializer())) {
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for (unsigned i = 0, e = Inits->getNumOperands(); i != e; ++i) {
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if (GlobalValue *GV = dyn_cast<GlobalValue>(Inits->getOperand(i)))
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llvmUsedValues.insert(GV);
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else if (ConstantExpr *CE =
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dyn_cast<ConstantExpr>(Inits->getOperand(i)))
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if (CE->getOpcode() == Instruction::BitCast)
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if (GlobalValue *GV = dyn_cast<GlobalValue>(CE->getOperand(0)))
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llvmUsedValues.insert(GV);
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}
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}
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}
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@ -123,8 +124,6 @@ bool StripSymbols::runOnModule(Module &M) {
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I != E; ++I) {
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if (I->hasInternalLinkage() && llvmUsedValues.count(I) == 0)
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I->setName(""); // Internal symbols can't participate in linkage
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else if (I->getName() == "llvm.used") {
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}
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}
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for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I) {
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