Yes, BC and BCR were on S/360 with the same semantics as on Z.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Assembler List [[email protected]] on behalf of Paul Gilmartin [[email protected]] Sent: Thursday, April 21, 2022 12:08 PM To: [email protected] Subject: Re: Unexpected C code On Apr 21, 2022, at 10:00:19, Gord Tomlin <[email protected]> wrote: > > On 2022-04-21 10:46 AM, Seymour J Metz wrote: >> Well, in the case of S/370 the compiler could emit JO or JNO after the add. > > Well, if only JO and JNO had existed in the days of S/370... > Wasn't there BC, even before the 370? Yes, it required a base register, but weren't programmers in that era pretty much resigned to base registers? -- gil
