On Fri, 27 Jun 2014, DJ Delorie wrote: > If you still disagree, let's first figure out what the right > relationship between TYPE_SIZE and TYPE_SIZE_UNIT is, for types that > aren't a multiple of BITS_PER_UNIT.
My suggestion: TYPE_SIZE should always be TYPE_SIZE_UNIT times BITS_PER_UNIT, so including any padding bits (and so should not exist, really - it's an extra pointer bulking up lots of trees with redundant information), while TYPE_PRECISION is what gives the number of value / sign bits. If you're allocating bit-fields, TYPE_PRECISION will say how many bits to use; if you're allocating registers (which might not always correspond neatly to multiples of BITS_PER_UNIT), TYPE_MODE is what's relevant; otherwise, you're allocating whole bytes in memory and can use TYPE_SIZE_UNIT. -- Joseph S. Myers jos...@codesourcery.com
