More than that, it means they can live entirely in registers.

This means it can be passed in registers (for anyone not aware of the term).

...can be spilled into registers, cached in registers, stored half in registers and half in...

...will likely benefit from being passed in registers (if available), even if they will probably...

...that. POD structs can exist solely in registers. Having ctor/dtor/postblit means that structs...

...on the stack in memory, not in registers.
 */
bool StructDeclaration::isPOD()
{
    if (isnested || cpctor || postblit...

...able to keep lots of stuff in registers. If the code is complex enough perhaps...

...run in one cycle). Plus, often more registers are modified which impedes good register allocation...

...pointers are OK in the stack and registers, so taking pointers to fields inside aggregates...

...I define struct regs to describe the registers and __gshared regs* p to point to...