RFR: 8226525: HotSpot compile-time error for x86-32

[Aleksey Shipilev]

On 7/1/19 4:22 PM, Andrew Haley wrote:
> This asm statement:
> 
> asm__ volatile ("cpuid " : "+a" (idx) : : "ebx", "ecx", "edx", "memory")
> 
> ... breaks on 32-bit systems because the GCC we use doesn't allow EBX to be
> clobbered. Fixed thusly:
> 
> http://cr.openjdk.java.net/~aph/8226525/

Looks okay to me. Put the comment, e.g.:
  // EBX is a reserved register on 32-bit Linux systems, cannot clobber it.

-Aleksey