search for: allcsrusesinentryblock

...d modifiesRegister both scan the operands. It's probably better to manually walk through the operands. 9. + // If all uses of CSRegs are in the entry block, there is nothing + // to shrink wrap: spills go in entry block, restores go in exiting + // blocks, turn off shrink wrapping. + if (allCSRUsesInEntryBlock) { + ShrinkWrapping = false; + DOUT << "All uses of CSRegs are in entry block, nothing to do.\n"; + } + // If we have decided not to shrink wrap, just return now. + if (! ShrinkWrapping) + return true; Why not just return inside if (allCSRUsesInEntryBlock)? 10. +bool P...

Here is an updated patch for shrink wrapping with: - spills/restores done with stack slot stores/loads - stack adjustment removed - refactoring (but still in need of more) - spill/restore insertion code unified with spill/restore placement code Documentation available here<http://wiki.github.com/jdmdj/llvm-work/shrink-wrapping-work> illustrates shrink wrapping with loops and discusses a

On Mon, Mar 2, 2009 at 10:35 AM, Evan Cheng <echeng at apple.com> wrote: > > On Mar 1, 2009, at 2:57 PM, John Mosby wrote: > > Obviously, all of this applies only when spills are done with push/pop, > which is the case on x86. I used this issue to start looking at generalizing > how spills and restores are handled, before looking too closely at other > targets, and

...de but could not decide which way to do it at first. > 9. > + // If all uses of CSRegs are in the entry block, there is nothing > > > + // to shrink wrap: spills go in entry block, restores go in exiting > > > + // blocks, turn off shrink wrapping. > > > + if (allCSRUsesInEntryBlock) { > > > + ShrinkWrapping = false; > > > + DOUT << "All uses of CSRegs are in entry block, nothing to do.\n"; > > > + } > > > + // If we have decided not to shrink wrap, just return now. > > > + if (! ShrinkWrapping) > > &g...

...; >> >> 9. >> +  // If all uses of CSRegs are in the entry block, there is nothing >> >> >> +  // to shrink wrap: spills go in entry block, restores go in exiting >> >> >> +  // blocks, turn off shrink wrapping. >> >> >> +  if (allCSRUsesInEntryBlock) { >> >> >> +    ShrinkWrapping = false; >> >> >> +    DOUT << "All uses of CSRegs are in entry block, nothing to do.\n"; >> >> >> +  } >> >> >> +  // If we have decided not to shrink wrap, just return now. >...