On 13 April 2012 14:10, Edward Jaffe <[email protected]> wrote:
> 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. Meanwhile, in another closely related but logically unreachable universe, the millicode for these processors is written in a language with essentially the same syntax and semantics as PL/X, but compiled using an IBM-written proprietary front end to the GCC suite, along with IBM contributions to the middle and back ends. This is, of course, PL8 (or GPL8), as described by W. GELLERICH ET AL, IBM J. RES. & DEV. VOL. 48 NO. 3/4 MAY/JULY 2004, available for a small charge of what IEEE quaintly calls US£31.00 at a paywall near you. I'd love to be a fly on the wall in the doubtless friendly and professional discussions between the Toronto compiler people and the Boeblingen millicode-turned-compiler team. Tony H. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
