On 5/23/06, DJ Delorie <[EMAIL PROTECTED]> wrote:
> You're misunderstanding how this code works. In cfglayout mode, > there is no "order" in the basic blocks such that > BLOCK_FOR_INSN(NEXT_INSN(BB_END(BB)) ) == BB->next_bb. This means > that you can fall through to other blocks than next_bb. Thanks for the tip, I figured out what was really happening. Which leads to the next question: What's the right way to keep an asm() from being loop invariant? I've got a case where an inline asm() is passed a pointer (the pointer is invariant) but internally dereferences it (the pointed-at memory is *not* invariant). However, loop-invariant.c is pulling it out of the loop anyway.
Sounds like you need a memory clobber constraint on the asm... ? Gr. Steven
