[llvm] r261365 - Revert r253557 "Alternative to long nops for X86 CPUs, by Andrey Turetsky"

[Joerg Sonnenberger via llvm-commits]

On Fri, Feb 19, 2016 at 09:26:31PM -0000, Hans Wennborg via llvm-commits wrote:
> Author: hans
> Date: Fri Feb 19 15:26:31 2016
> New Revision: 261365
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=261365&view=rev
> Log:
> Revert r253557 "Alternative to long nops for X86 CPUs, by Andrey Turetsky"
> 
> Turns out the new nop sequences aren't actually nops on x86_64 (PR26554).

Can we reduce this in general to 32bit mode -> AltNops and 64bit mode ->
LongNops? Do we align loops etc normally to 16 Bytes in 32bit mode?

Joerg