build options #compiler

src/ir/emit_llvm.zig

@@ -1454,6 +1454,10 @@ pub const LLVMEmitter = struct {
                     },
                 }
             },
+            .compiler_call => {
+                // Compiler hooks are comptime-only; if one reaches emission, produce undef
+                self.mapRef(c.LLVMGetUndef(self.toLLVMType(instruction.ty)));
+            },
             .call_closure => |call_op| {
                 // Closure: { fn_ptr, env } — extract fn_ptr, prepend env as first arg
                 const closure = self.resolveRef(call_op.callee);