On Thu, 12 Apr 2007, H. J. Lu wrote: > > You can specify Var together with Mask in .opt files; that allows you to > > create a second variable for flag bits as a smaller patch for now. > > > > How will it work with > > /* Turn on SSSE3 builtins for -msse4.1. */ > if (TARGET_SSE4_1) > target_flags |= MASK_SSSE3; > > One will need to know which variable the mask is used for.
Yes. You could make opt*.awk generate macros such as TARGET_ENABLE_SSSE3 that would do the appropriate bit-masking operations on the right variables automatically. If existing code were made to use such macros incrementally, this would also allow a much smaller patch to be used for any subsequent change to use bit-fields. -- Joseph S. Myers [EMAIL PROTECTED]
