It's not so much the instruction cache but rather the instruction pipeline that might need to be flushed. As Ed Jaffe pointed out, anything done speculatively needs to be, and is, re-evaluated (in general, thrown away and re-done).
Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
