From: lkcl Date: Mon, 26 Oct 2020 23:41:48 +0000 (+0000) Subject: (no commit message) X-Git-Tag: convert-csv-opcode-to-binary~1921 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=02605471d1fa23ea2e109288b772bf6b2d191774;p=libreriscv.git --- diff --git a/openpower/sv/predication.mdwn b/openpower/sv/predication.mdwn index c4bc0897f..1d6fe738b 100644 --- a/openpower/sv/predication.mdwn +++ b/openpower/sv/predication.mdwn @@ -64,7 +64,7 @@ They also involve adding extra scalar bitmanip opcodes, such that by utilising In addition those scalar 64-bit bitmanip operations, although some of them are obscure and unusual in the scalar world, do actually have practical applications outside of a vector context. -(Hilariously and confusingly those very same scalar bitmanip opcodes may themselves be SV-vectorised however with VL only being up to 64 elements it is not anticipated that SV-bitmanip would be used to generate up to 64 bit predicate masks!). +(Hilariously and confusingly those very same scalar bitmanip opcodes may themselves be SV-vectorised however with VL only being up to 64 elements it is not anticipated that SV-bitmanip would be used to generate up to 64 bit predicate masks, when a single 64 bit scalar operation will suffice). Adding a full set special vector opcodes just for manipulating predicate masks and being able to transfer them to other regfiles (a la mfcr) is however anomalous, costly, and unnecessary.