[Bug tree-optimization/49937] [4.7 Regression] g++.dg/tree-ssa/fwprop-align.C

[hp at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49937

--- Comment #6 from Hans-Peter Nilsson <hp at gcc dot gnu.org> 2011-08-09 20:25:14 UTC ---
(In reply to comment #5)
> BIGGEST_ALIGNMENT is the
> "biggest alignment that any data type can require on this machine, in bits"
> "this is not the biggest alignment that is supported, just the biggest
> alignment that, when violated, may cause a fault".

Hence its use is suboptimal except as a fallback or when the *preferred*
alignment isn't stated, like in "LOCAL_ALIGNMENT (blob, BIGGEST_ALIGNMENT)".

Maybe it should be renamed to something matching its use, like
MAXIMUM_OF_MININUM_ALIGNMENTS_FOR_CPU_DATA_ACCESS...