Not only no but hell no. JNE foo generates A74 with a mask of F, the same code as BRC 15,foo; BNE foo generates 47 with a mask of F, the same code as BC 15,foo.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List <[email protected]> on behalf of Mike Shaw <[email protected]> Sent: Tuesday, August 13, 2019 10:33 AM To: [email protected] Subject: [SUSPECTED SPAM] Re: Instruction speeds On 8/12/2019 9:33 PM, Christopher Y. Blaicher wrote: > ...<snip>...> > JUMPs are faster than BRANCHes. > ...<snip>.. I don't know what you mean by that Chris. The various types of Jump instructions are just extended mnemonics for various types of Branch instructions. JNE generates the same machine instruction as BNE, etc. Do you mean the combined compare and jump instructions like CLGRJ? Mike Shaw MVS/QuickRef Support Group Chicago-Soft, Ltd. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
