Compiler Warning (Level 4) C4740

  • Article

flow in or out of inline asm code suppresses global optimization

When there is a jump in to or out of an asm block, global optimizations are disabled for that function.

The following sample generates C4740:

// C4740.cpp
// compile with: /O2 /W4
// processor: x86
int main() {
   __asm jmp tester
   tester:;
}