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Hello,

I'm trying to get the pointer to the first element of a string (so that I can pass it to a function).

The string itself is a constant kept in a global variable.

My end goal is to generate the IR for something like "puts("Hello World")";

I'm stuck on the parameter part of the call instruction.

So far I have something like this:

const std::string& str = strExpr->value();

llvm::ArrayType\* type = llvm::ArrayType::get(llvm::IntegerType::get(m\_context, 8), str.size()+1);

llvm::GlobalVariable\* var = new llvm::GlobalVariable(m\_module, type, true, llvm::GlobalValue::PrivateLinkage, nullptr, ".str");

var->setAlignment(1);;

llvm::Constant\* c = llvm::ConstantDataArray::getString(m\_context, str);

var->setInitializer(c);

The part below is the one I have problems with:

llvm::ConstantInt\* const\_int32\_12 = llvm::ConstantInt::get(m\_context, llvm::APInt(32, llvm::StringRef("0"), 10));

std::vector const\_ptr\_14\_indices;

const\_ptr\_14\_indices.push\_back(const\_int32\_12);

return llvm::ConstantExpr::getGetElementPtr(nullptr,c, const\_ptr\_14\_indices);

I realize that the GlobalVariable should not be declared every time I get in that function but that's something I'll fix after I get this working.

Any help here would be appreciated.

Regards,

Lorin