search for: globalexprast

Hello all, When extending the tutorial to support global variables I'm getting the following linker error: glob.o:glob.cpp:(.text+0x12241): undefined reference to `vtable for GlobalExprAST' collect2: ld returned 1 exit status GlobalExprAST class is: /// GlobalExprAST - Expression class for globals class GlobalExprAST : public ExprAST { std::string Name; ExprAST *Init; public: GlobalExprAST(const std::string &name, ExprAST *init) : Name(name), Init(init) {} virtua...

Hi Anton, > But there are still some details I must be missing. I'm getting an assertion > when I try the following assignment in my script: > global c = cos(1); > Assertion failed: isa<X>(Val) && "cast<Ty>() argument of incompatible type!", I think this is telling you that cos(1) is not a constant. Ciao, Duncan.

Hi Duncan Many many thanks, it works now! But there are still some details I must be missing. I'm getting an assertion when I try the following assignment in my script: global c = cos(1); Assertion failed: isa<X>(Val) && "cast<Ty>() argument of incompatible type!", file c:/llvm-source-2.7/include/llvm/Support/Casting.h, line 200 However, running for example

...itVal = cast<Constant>(Init->Codegen()); ? I made some changes and now my code basically works, except in assigments like the one above. It is a little bit frustrating because is the main thing preventing me finishing my little silly scripting language for monte carlo simulations. Value *GlobalExprAST::Codegen() { for (unsigned i = 0, e = GlobalNames.size(); i != e; ++i) { const std::string &GlobalName = GlobalNames[i].first; ExprAST *Init = GlobalNames[i].second; Constant *InitVal; InitVal = cast<Constant>(Init->Codegen()); if (InitVal == 0) return 0; GlobalVariable * gl...