On 1/17/2012 8:06 AM, Farley, Peter x23353 wrote:
Others have said here that performance is a strong reason
for _not_ coding in assembler:
o Compiler developers have done the research on instruction
timings and know better than most end users what sequences
fit the pipelines optimally.
Notoriously NOT for the IBM COBOL compilers.
The PL/X compiler also generates 'poor' code. (It's one reason it's been
difficult to convince the 'powers that be' to establish a new Architectural
Level Set for z/OS.)
IBM has hinted that they plan to address these compiler deficiencies--when is
anybody's guess. But, at least they admit there's a problem. That's the first
step...
--
Edward E Jaffe
Phoenix Software International, Inc
831 Parkview Drive North
El Segundo, CA 90245
310-338-0400 x318
[email protected]
http://www.phoenixsoftware.com/
