On Mon, 8 Feb 2016, Eric Botcazou wrote: > > No, that's not over-aliging a salar type, that's preserving alignment > > information on the memory reference. > > What would we lose exactly by lowering the alignment to that of the type? > What's the point in knowing that a 32-bit integer is 64-bit aligned at the > GIMPLE level?
It helps vectorization. This was specifically introduced to fix a regression on powerpc. See PR65310. Richard.
