Function callOrFastcall

include/daScript/simulate/simulate.h:597–637

        }

        DAS_EVAL_ABI __forceinline vec4f callOrFastcall(const SimFunction * fn, vec4f * args, LineInfo * line) {
            if ( fn->fastcall ) {
                if ( fastCallDepth * sizeof(Prologue) > stack.free_size() ) { // this is to catch stack overflow
                    throw_error_at(line, "stack overflow, fast call depth limit exceeded while calling %s", fn->mangledName);
                }
                fastCallDepth ++;
                auto aa = abiArg;
                abiArg = args;
                result = fn->code->eval(*this);
                stopFlags = 0;
                abiArg = aa;
                fastCallDepth --;
                return result;
            } else {
                // PUSH
                char * EP, *SP;
                if (!stack.push(fn->stackSize, EP, SP)) {
                    throw_error_at(line, "stack overflow while calling %s",fn->mangledName);
                }
                // fill prologue
                auto aa = abiArg;
                abiArg = args;
#if DAS_SANITIZER
                memset(stack.sp(), 0xcd, fn->stackSize);
#endif
#if DAS_ENABLE_STACK_WALK
                Prologue * pp = (Prologue *)stack.sp();
                pp->info = fn->debugInfo;
                pp->arguments = args;
                pp->cmres = nullptr;
                pp->line = line;
#endif
                // CALL
                fn->code->eval(*this);
                stopFlags = 0;
                // POP
                abiArg = aa;
                stack.pop(EP, SP);
                return result;
            }
        }

        DAS_EVAL_ABI __forceinline vec4f callWithCopyOnReturn(const SimFunction * fn, vec4f * args, void * cmres, LineInfo * line) {
            // PUSH