• Yes
    • ISA
    • Zicond
    • Ratification-Ready Approved
    • Completed
    • Completed
    • Completed
    • Approved
    • 0

      Zicond is a fast-track extension (approved in Q4CY2022 by the AR) to add two integer instructions that allow building up conditional-ops in a RISC-V compatible way:

      • unconditional (not predicated) ALU operation (czero.eqz/czero.nez)
      • Think of it as a special form of seqz/snez that sets the destination to “0” or a supplied register-value (instead of “0” or “1”).
      • 1 destination operand, 2 source operands
      • allows building up common conditional sequences:
      • conditional-{add,subtract}, conditional-bitwise-{or,xor}: 2 insns
      • conditional-bitwise-{and,select}: 3 insns (requires 1 temporary register)
      • no new relocations, no new ABI changes required

      Owner: Philipp Tomsich

      Legacy documents:

        1.
        [Inception] - Infrastructure Setup Request Specification Acceptance Criteria Done Unassigned 06/Jul/23 0
        2.
        [Fast-Track] - Request AR Approval ARC Review AR Approved Jeff Scheel   1
        3.
        [Fast-Track] - Notify TSC of Fast-Track Approval Specification Acceptance Criteria Done Unassigned   1
        4.
        [Plan] - Develop Specification Plan Planning Acceptance Criteria Done Unassigned 25/Jan/23 0
        5.
        [Plan] - Governing Committee Approval Approval Approval Not Required Jeff Scheel 06/Jul/23 0
        6.
        [Plan] - Schedule Plan Presentation to Chairs Specification Acceptance Criteria Done Unassigned 06/Jul/23 0
        7.
        [Plan] - Present Plan to Chairs Specification Acceptance Criteria Done Unassigned 06/Jul/23 1
        8.
        [Plan] - Chairs Approval Approval Approved Jeff Scheel 06/Jul/23 1
        9.
        [Plan] - Notify TSC Specification Acceptance Criteria Done Unassigned 06/Jul/23 0
        10.
        [Development] - Develop Specification Specification Acceptance Criteria Done Unassigned 06/Jul/23 0
        11.
        [Development] - Governing Committee Specification Stabilization Approval Approval Approval Not Required Jeff Scheel 06/Jul/23 0
        12.
        [Freeze] - Request Internal Review Freeze Acceptance Criteria Not Required to Freeze Unassigned 13/Jul/23 0
        13.
        [Freeze] - Complete Documentation of New Instructions, State Changes, and ISA Alterations Freeze Acceptance Criteria Done Unassigned 29/Mar/23 1
        14.
        [Freeze] - Develop Opcode Support Freeze Acceptance Criteria Done Unassigned 29/Mar/23 1
        15.
        [Freeze] - Implement Simulator Support Freeze Acceptance Criteria Done Unassigned 30/Jun/23 1
        16.
        [Freeze] - Implement psABI Freeze Acceptance Criteria Not Required to Freeze Unassigned 30/Jun/23 0
        17.
        [Freeze] - Develop Support for GCC Freeze Acceptance Criteria Done Unassigned 30/Jun/23 1
        18.
        [Freeze] - Develop RISC-V Tests Freeze Acceptance Criteria Done Unassigned 30/Jun/23 1
        19.
        [Freeze] - Perform Input Testing Freeze Acceptance Criteria Done Unassigned 30/Jun/23 1
        20.
        [Freeze] - Add Support into the Sail Golden Model Freeze Acceptance Criteria Done Unassigned 30/Jun/23 1
        21.
        [Freeze] - Create Proof of Concept Freeze Acceptance Criteria Done Unassigned 30/Jun/23 1
        22.
        [Freeze] - ARC Review (required) ARC Review AR Approved Jeff Scheel 30/Jun/23 1
        23.
        [Freeze] - Ensure Compliance with RISC-V Specification Policies Approval Approved Jeff Scheel 30/Jun/23 1
        24.
        [Freeze] - Request Signoffs from Committee Chair Approval Approved Jeff Scheel 30/Jun/23 1
        25.
        [Freeze] - Request Signoff from RISC-V CTO Approval Approved Jeff Scheel 30/Jun/23 1
        26.
        [Ratification-Ready] - Public Review Public Review Public Review Done Unassigned 29/Jul/23 1
        27.
        [Ratification-Ready] - Resolve Freeze Waivers Ratification-Ready Acceptance Criteria Not Required for Ratification-Ready Unassigned 06/Jul/23 0
        28.
        [Ratification-Ready] - Document Complete Ratification-Ready Acceptance Criteria Done Unassigned 06/Jul/23 2
        29.
        [Ratification-Ready] - AR Review ARC Review AR Review Not Required Unassigned 06/Jul/23 1
        30.
        [Ratification-Ready] - Unified Discovery Ratification-Ready Acceptance Criteria Ratification-Ready Waiver Granted Jeff Scheel 06/Jul/23 1
        31.
        [Ratification-Ready] - Regression Testing Ratification-Ready Acceptance Criteria Done Unassigned 06/Jul/23 1
        32.
        [Ratification-Ready] - Architectural Compatibility Tests Ratification-Ready Acceptance Criteria Done Unassigned 06/Jul/23 1
        33.
        [Ratification-Ready] - Industry Standard Tests Ratification-Ready Acceptance Criteria Done Unassigned 06/Jul/23 1
        34.
        [Ratification-Ready] - OS Enablement Ratification-Ready Acceptance Criteria Not Required for Ratification-Ready Unassigned 06/Jul/23 1
        35.
        [Ratification-Ready] - GitHub Structure Ratification-Ready Acceptance Criteria Done Unassigned 06/Jul/23 1
        36.
        [Ratification-Ready] - Ensure Compliance with RISC-V Specification Policies Approval Approved Jeff Scheel 06/Jul/23 1
        37.
        [Ratification-Ready] - Committee Chair Signoffs Approval Approved Jeff Scheel 14/Sep/23 5
        38.
        [Ratification-Ready] - CTO Signoff Approval Approved Jeff Scheel 06/Jul/23 1
        39.
        [Ratification-Ready] - TSC Approval Approval Approved Jeff Scheel 10/Jul/23 2
        40.
        [Ratification-Ready] - Schedule BoD Review Specification Acceptance Criteria Done Unassigned 06/Jul/23 1
        41.
        [Ratification-Ready] - BoD Approval BoD Approval Approved Rafael Sene 06/Jul/23 0
        42.
        [Ratification-Ready] - Profiles Ratification-Ready Acceptance Criteria Done Unassigned   1

            Unassigned Unassigned
            jscheel Jeff Scheel
            Philipp Tomsich Philipp Tomsich
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

              Created:
              Updated:
              Resolved: