ext-p : update table to v0.20 - #413
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Andrew Waterman (aswaterman) merged 1 commit intoMar 24, 2026
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Quoted from spec
"This version (020) differs from the previous one (019) with the addition of:
* SHL instructions (shift left or right, logical) that are unsigned
versions of the SHA instructions (shift left or right, arithmetic); and
* for RV64 only, ‘P’-suffi x versions of PNCLIP instructions that are
similar to RV32 PNCLIP instructions without shifting or rounding.
The complete set of instructions added for RV32 are:
PSSHL.HS SSHL PSSHL.DHS PSSHL.DWS
PSSHLR.HS SSHLR PSSHLR.DHS PSSHLR.DWS
And for RV64:
PSSHL.HS PSSHL.WS SHL PNCLIPP.B PNCLIPP.H PNCLIPP.W
PSSHLR.HS PSSHLR.WS SHLR PNCLIPUP.B PNCLIPUP.H PNCLIPUP.W"
reference:
https://www.jhauser.us/RISCV/ext-P/RVP-instrEncodings-020.pdf
Signed-off-by: Chih-Min Chao <chihmin.chao@sifive.com>
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## master #413 +/- ##
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Coverage 97.08% 97.09%
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Files 14 14
Lines 926 929 +3
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+ Hits 899 902 +3
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Andrew Waterman (aswaterman)
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LGTM, thanks for the quick turnaround!
Luca Colagrande (colluca)
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Apr 30, 2026
Quoted from spec
"This version (020) differs from the previous one (019) with the addition of:
* SHL instructions (shift left or right, logical) that are unsigned
versions of the SHA instructions (shift left or right, arithmetic); and
* for RV64 only, ‘P’-suffi x versions of PNCLIP instructions that are
similar to RV32 PNCLIP instructions without shifting or rounding.
The complete set of instructions added for RV32 are:
PSSHL.HS SSHL PSSHL.DHS PSSHL.DWS
PSSHLR.HS SSHLR PSSHLR.DHS PSSHLR.DWS
And for RV64:
PSSHL.HS PSSHL.WS SHL PNCLIPP.B PNCLIPP.H PNCLIPP.W
PSSHLR.HS PSSHLR.WS SHLR PNCLIPUP.B PNCLIPUP.H PNCLIPUP.W"
reference:
https://www.jhauser.us/RISCV/ext-P/RVP-instrEncodings-020.pdf
Signed-off-by: Chih-Min Chao <chihmin.chao@sifive.com>
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Quoted from spec
"This version (020) differs from the previous one (019) with the addition of:
The complete set of instructions added for RV32 are:
PSSHL.HS SSHL PSSHL.DHS PSSHL.DWS
PSSHLR.HS SSHLR PSSHLR.DHS PSSHLR.DWS
And for RV64:
PSSHL.HS PSSHL.WS SHL PNCLIPP.B PNCLIPP.H PNCLIPP.W
PSSHLR.HS PSSHLR.WS SHLR PNCLIPUP.B PNCLIPUP.H PNCLIPUP.W"
reference:
https://www.jhauser.us/RISCV/ext-P/RVP-instrEncodings-020.pdf