Thread overview
Problem with LLVM-C bindings
Oct 26
Daniel
Oct 26
Daniel
October 26

Hi all, I'm having a problem with llvm-c bindings, it is likely a trivial thing, but this is my first D project, and I'm not an expert in C either.

  • symtable.d
    struct Symbol {
    string name;
    SymbolKind kind;
    SymbolType type;
    LLVMValueRef valueRef;

    public LLVMValueRef getValueRef() {
    return valueRef;
    }

    public void setValueRef(LLVMValueRef valueRef) {
    this.valueRef = valueRef;
    }
    }

  • ast.d
    class ConstDeclNode : AstNode {
    string constName;
    int constValue;
    Symbol constSymbol;

    Symbol getConstSymbol() {
    return constSymbol;
    }

    void setConstSymbol(Symbol constSymbol) {
    this.constSymbol = constSymbol;
    }

  • codegen.d
    valRef = LLVMBuildAlloca(llvmBuilder, int32Type, symbolName.toStringz());
    vars[symbolName] = valRef;
    node.getVarSymbol().setValueRef(valRef);
    ---snip---
    variableRef = vars[symbolName]; => WORKS
    variableRef = node.getVarSymbol().getValueRef(); => DOESN'T WORK

Here, vars[] is declared in codegen.d, I set and get LLVMValueRefs and everything goes well, but I tried to store the LLVMValueRefs in the Symbol structure which is in another D module and cannot get it to work, the program stops there when trying to access those values.

Any hint about what to try will be greatly appreciated.

Daniel

October 26
On Thursday, 26 October 2023 at 01:28:42 UTC, Daniel wrote:
> Hi all, I'm having a problem with llvm-c bindings, it is likely a trivial thing, but this is my first D project, and I'm not an expert in C either.
>
> [...]

Just a tip, you can format your code in here. If you're using the web there's a checkbox, "Enable Markdown", that you can check.

Then paste your entire file content as

```d
// code
```

I will post this with the Markdown disabled so that you see how to write it literally.
October 26

On Thursday, 26 October 2023 at 01:28:42 UTC, Daniel wrote:

>

Hi all, I'm having a problem with llvm-c bindings, it is likely a trivial thing, but this is my first D project, and I'm not an expert in C either.

---snipped

Any hint about what to try will be greatly appreciated.

Daniel

EDIT: My bad, that is what happens when you do things in a hurry, sorry...

Hi all, I'm having a problem with llvm-c bindings, it is likely a trivial thing, but this is my first D project, and I'm not an expert in C either.

  • symtable.d
    struct Symbol {
        string name;
        SymbolKind kind;
        SymbolType type;
        LLVMValueRef valueRef;

        public LLVMValueRef getValueRef() {
            return valueRef;
        }

        public void setValueRef(LLVMValueRef valueRef) {
            this.valueRef = valueRef;
        }
    }
  • ast.d
    class ConstDeclNode : AstNode {
        string constName;
        int constValue;
        Symbol constSymbol;

        Symbol getConstSymbol() {
            return constSymbol;
        }

        void setConstSymbol(Symbol constSymbol) {
            this.constSymbol = constSymbol;
        }
    }
  • codegen.d
    valRef = LLVMBuildAlloca(llvmBuilder, int32Type, symbolName.toStringz());
    vars[symbolName] = valRef;                  // A
    node.getVarSymbol().setValueRef(valRef);    // B
    ---snip---
    variableRef = vars[symbolName];                   // A  => THIS WORKS
    variableRef = node.getVarSymbol().getValueRef();  // B => THIS DOES NOT WORK

Here, vars[] is declared in codegen.d, I set and get LLVMValueRefs using the lines commented with "A" and everything goes well, but I tried to store the LLVMValueRefs in the Symbol structure which is in another D module, in the lines commented with "B", and cannot get it to work, the program stops there when trying to access those values.

Any hint about what to try will be greatly appreciated.

Daniel