From cc4c26ea56854289a57fe47d8b9c53977eee57ec Mon Sep 17 00:00:00 2001 From: lkcl Date: Sat, 12 Dec 2020 09:46:41 +0000 Subject: [PATCH] --- openpower/sv/svp_rewrite/svp64/discussion.mdwn | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/openpower/sv/svp_rewrite/svp64/discussion.mdwn b/openpower/sv/svp_rewrite/svp64/discussion.mdwn index 959bdb740..f72d81741 100644 --- a/openpower/sv/svp_rewrite/svp64/discussion.mdwn +++ b/openpower/sv/svp_rewrite/svp64/discussion.mdwn @@ -67,7 +67,10 @@ For 2 op (dest/src1/src2) the tag may be 3 bits: total 9 bits. for 3 op (dest/s Note: -* saturation is done on the result at the **source** elwidth +* for saturation the operation is done at the **source** width + (this is different from normal elwidth overrides which + are done at the **dest** width) +* saturation is done on the result at the **dest** elwidth * signed-saturation causes sign-extension from source to dest elwidths **after** saturation # Notes about rounding, clamp and saturate -- 2.30.2