On 03/17/2011 03:28 PM, H.J. Lu wrote: > It will require very extensive changes to x86 backend since stack pointer > and frame pointer are really in DImode for x32 as x32 process runs in > 64bit mode. If you can make it to work, please let me know.
Yes, the stack pointer uses all 64 bits for e.g. push/pop/call. But so what? Given that our 32-bit move insns also implicitly zero-extend, I don't see that we need to actually expose the fact of the 64-bit RSP to the rest of the compiler. r~
