From 996ecc9a41faa198e8b6d50a9755ec20caad4328 Mon Sep 17 00:00:00 2001 From: lkcl Date: Thu, 30 Mar 2023 01:01:44 +0100 Subject: [PATCH] --- openpower/sv/rfc/ls010.mdwn | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/openpower/sv/rfc/ls010.mdwn b/openpower/sv/rfc/ls010.mdwn index 541fffb50..3ed1b9876 100644 --- a/openpower/sv/rfc/ls010.mdwn +++ b/openpower/sv/rfc/ls010.mdwn @@ -1019,6 +1019,11 @@ such as crand, cror or [[sv/cr_int_predication]] crweirder may be used, and ffirst applied to the crop instead of to the arithmetic vector. Note that crops are covered by the [[sv/cr_ops]] Mode format. +Use of Fail-on-first with Vertical-First Mode is not prohibited but is +not really recommended. The effect of truncating VL +may have unintended and unexpected consequences on subsequent instructions. +VLi set will be fine: it is when VLi is clear that problems may be faced. + *Programmer's note: `VLi` is only accessible in normal operations which in turn limits the CR field bit-testing to only `EQ/NE`. [[sv/cr_ops]] are not so limited. Thus it is possible to use for example `sv.cror/ff=gt/vli -- 2.30.2