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Collect references from globals.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29530 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2006-08-04 19:10:26 +00:00
parent a773bd54f3
commit 304d5f2edc
1 changed files with 11 additions and 5 deletions
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16
tools/lto/lto.cpp
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@ -85,15 +85,16 @@ getLTOLinkageType(GlobalValue *v)
// Find exeternal symbols referenced by VALUE. This is a recursive function.
static void
findExternalRefs(Value *value, std::set<const char *> &references) {
if (ConstantExpr *ce = dyn_cast<ConstantExpr>(value))
for (unsigned i = 0, e = ce->getNumOperands(); i != e; ++i)
findExternalRefs(ce->getOperand(i), references);
else if (GlobalValue *gv = dyn_cast<GlobalValue>(value)) {
if (GlobalValue *gv = dyn_cast<GlobalValue>(value)) {
LTOLinkageTypes lt = getLTOLinkageType(gv);
if (lt != LTOInternalLinkage && strncmp (gv->getName().c_str(), "llvm.", 5))
references.insert(addUnderscore(gv->getName().c_str()));
}
else if (Constant *c = dyn_cast<Constant>(value))
// Handle ConstantExpr, ConstantStruct, ConstantArry etc..
for (unsigned i = 0, e = c->getNumOperands(); i != e; ++i)
findExternalRefs(c->getOperand(i), references);
}
/// InputFilename is a LLVM bytecode file. Read it using bytecode reader.
@ -140,6 +141,11 @@ LinkTimeOptimizer::readLLVMObjectFile(const std::string &InputFilename,
const char *name = addUnderscore(v->getName().c_str());
LLVMSymbol *newSymbol = new LLVMSymbol(lt,v);
symbols[name] = newSymbol;
for (unsigned count = 0, total = v->getNumOperands();
count != total; ++count)
findExternalRefs(v->getOperand(count), references);
}
}