The "G" extension for everything you want to run shrink-wrapped binaries on a standard OS has been there since the May 7 2014 "User Level ISA, Version 2.0", which is before RISC-V started to be promoted outside of Berkeley e.g. at Hot Chips 26 in August 2014, and the first RISC-V workshop in January 2015 in Monterey.
The name "G" has morphed into now (along with the C extension) being called "RVA20", which led to "RVA22" and "RVA23", but the principle is unchanged.
"An integer base plus these four standard extensions (“IMAFD”) is given the abbreviation “G” and provides a general-purpose scalar instruction set. RV32G and RV64G are currently the default target of our compiler toolchains."
The "G" extension for everything you want to run shrink-wrapped binaries on a standard OS has been there since the May 7 2014 "User Level ISA, Version 2.0", which is before RISC-V started to be promoted outside of Berkeley e.g. at Hot Chips 26 in August 2014, and the first RISC-V workshop in January 2015 in Monterey.
The name "G" has morphed into now (along with the C extension) being called "RVA20", which led to "RVA22" and "RVA23", but the principle is unchanged.
"An integer base plus these four standard extensions (“IMAFD”) is given the abbreviation “G” and provides a general-purpose scalar instruction set. RV32G and RV64G are currently the default target of our compiler toolchains."
pp 4-5 in
https://www2.eecs.berkeley.edu/Pubs/TechRpts/2014/EECS-2014-...