On 14/04/2012 2:10 AM, Edward Jaffe wrote:
On 4/13/2012 10:46 AM, David Crayford wrote:
On 14/04/2012 1:38 AM, Edward Jaffe wrote:
On 4/12/2012 9:03 AM, David Crayford wrote:
AFAIK, the PL/X compiler shares a back-end with the other code
optimizers, so should produce excellent code.
Not yet.
So does that mean that the PL/X compiler produces inferior code to
the Metal/C compiler? That would be disappointing considering the
majority of the operating system is writen in PL/X!
Yes. This has been one of the justifications for not having a new z/OS
Architectural Level Set i.e., the existing PL/X compiler cannot
generate code that takes advantage of the newer hardware features, so
why force customers to upgrade unnecessarily? The compiler was given
to the folks in Toronto a couple/few years ago with the intent of
having it enhanced with the "smart" back end used for other IBM
compilers. Given that z/OS V2.1 will require z9 processors there is
even more pressure on Toronto to deliver this much needed "plumbing"
enhancement.
Thanks for the info! Seems like IBM are more interested in the
middleware (Websphere!) then the OS! How does that make sense?
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO IBM-MAIN
