fix(failure_code): use fflags CSR instead of fcsr in fflags mismatch reporter

.codespellrc

@@ -1,2 +1,2 @@
 [codespell]
-ignore-words-list = hart, vill, vor, FPR, fpr, mone, sie, fle, stip, sxl, VAs, ExceptionsS, rouge, Synopsys, ExtInt, USEED
+ignore-words-list = hart, vill, vor, FPR, fpr, mone, sie, fle, stip, sxl, VAs, ExceptionsS, rouge, Synopsys, ExtInt, USEED, useed

.github/scripts/install-cvw.sh

@@ -8,7 +8,7 @@
 set -euo pipefail
 
 INSTALL_DIR="${1:?Usage: install-cvw.sh <install-dir>}"
-CVW_COMMIT="fa19687ea37314d7eb08bcb720a68e6fb79711c6"
+CVW_COMMIT="62c78d156c92a3e0d5a9dce6d6171fbeebcf6162"
 VERILATOR_VERSION="v5.036"
 
 # Install Verilator from source

.github/scripts/install-spike.sh

@@ -8,7 +8,7 @@
 set -euo pipefail
 
 INSTALL_DIR="${1:?Usage: install-spike.sh <install-dir>}"
-SPIKE_COMMIT="dbb30bb31a086decd0cf1376dca3418d0a9bac64"
+SPIKE_COMMIT="b21cccdc5f4680d9c13a6bd7d9d00b75aea3cbb5"
 
 git clone https://github.com/riscv/riscv-isa-sim.git
 cd riscv-isa-sim

.github/scripts/install-whisper.sh

@@ -8,7 +8,7 @@
 set -euo pipefail
 
 INSTALL_DIR="${1:?Usage: install-whisper.sh <install-dir>}"
-WHISPER_COMMIT="2e43688c680a1f7ffdb0b19cf0e84fa18590e86b"
+WHISPER_COMMIT="aa4a72aa4817a313a0148435a3a542542f5728a9"
 
 git clone https://github.com/tenstorrent/whisper.git
 cd whisper

.github/workflows/autofix.yml

@@ -6,6 +6,11 @@ name: autofix.ci
 on:
   pull_request:
 
+# Only run on the latest commit if a PR is updated
+concurrency:
+  group: "${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}"
+  cancel-in-progress: true
+
 permissions:
   contents: read
 

.github/workflows/regress.yml

@@ -13,24 +13,24 @@ concurrency:
   cancel-in-progress: true
 
 env:
-  SAIL_VERSION: "0.10"
-  GCC_TOOLCHAIN_VERSION: "2026.04.05"
+  SAIL_VERSION: "0.11"
+  RISCV_TOOLCHAIN_VERSION: "2026.04.26"
   LLVM_VERSION: "22"
 
 jobs:
   lint:
-    name: Pre-commit check
+    name: Pre-commit (prek) check
     runs-on: ubuntu-latest
 
     steps:
       - name: Checkout code
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
-      - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
+      - name: Set up mise
+        uses: jdx/mise-action@1648a7812b9aeae629881980618f079932869151 # v4
 
-      - name: Ensure pre-commit checks pass
-        run: uvx pre-commit run --all-files --show-diff-on-failure --color=always
+      - name: Run prek
+        uses: j178/prek-action@6ad80277337ad479fe43bd70701c3f7f8aa74db3 # v2.0.3
 
   # Data-driven regression.
   # Configs are auto-discovered from the config directory.
@@ -75,7 +75,7 @@ jobs:
 
       - name: Install RISC-V GCC toolchain
         run: |
-          curl --location https://github.com/riscv-collab/riscv-gnu-toolchain/releases/download/${GCC_TOOLCHAIN_VERSION}/riscv64-elf-ubuntu-24.04-gcc.tar.xz \
+          curl --location https://github.com/riscv-collab/riscv-gnu-toolchain/releases/download/${RISCV_TOOLCHAIN_VERSION}/riscv64-elf-ubuntu-24.04-gcc.tar.xz \
           | sudo tar xvJ --directory=/usr/local --strip-components=1
 
       - name: Install Clang
@@ -260,7 +260,7 @@ jobs:
 
       - name: Install RISC-V GCC toolchain
         run: |
-          curl --location https://github.com/riscv-collab/riscv-gnu-toolchain/releases/download/${GCC_TOOLCHAIN_VERSION}/riscv64-elf-ubuntu-24.04-gcc.tar.xz \
+          curl --location https://github.com/riscv-collab/riscv-gnu-toolchain/releases/download/${RISCV_TOOLCHAIN_VERSION}/riscv64-elf-ubuntu-24.04-gcc.tar.xz \
           | sudo tar xvJ --directory=/usr/local --strip-components=1
 
       - name: Build ELFs (exercises full act build DAG)

.gitignore

@@ -30,6 +30,12 @@ __pycache__
 # Work directories
 work/
 
+# vector tests
+tests/rv32i/V*
+tests/rv32i/Zv*
+tests/rv64i/V*
+tests/rv64i/Zv*
+
 # priv tests
 tests/priv/headers
 tests/priv/**/*.S

.mise.toml

@@ -1,8 +1,17 @@
 # SPDX-License-Identifier: Apache-2.0
 
 [tools]
+prek = "0.3.11"
 ruby = "3.4.9"
-uv = "0.11.7"
+uv = "0.11.8"
 
 [settings.ruby]
 compile = false
+
+[tasks.prek]
+description = "Run prek hooks on all files"
+run = "prek run --all-files"
+
+[tasks.prek-install]
+description = "Install prek git hooks"
+run = "prek install"

.pre-commit-config.yaml

@@ -51,7 +51,7 @@ repos:
 
   # Ensure uv lock file is up to date
   - repo: https://github.com/astral-sh/uv-pre-commit
-    rev: 0.11.7
+    rev: 0.11.8
     hooks:
       - id: uv-lock
 
@@ -83,7 +83,7 @@ repos:
 
   # Validate Renovate configuration
   - repo: https://github.com/renovatebot/pre-commit-hooks
-    rev: 43.132.1
+    rev: 43.141.2
     hooks:
       - id: renovate-config-validator
 

CONTRIBUTING.md

@@ -16,26 +16,28 @@ In addition to the runtime prerequisites, contributors should set up the followi
 
 ### Pre-commit Hooks
 
-This project uses [`pre-commit`](https://pre-commit.com/) to run automated checks before each commit, including linting, formatting, type checking, and spell checking. Install the hooks with:
+This project uses [`prek`](https://prek.j178.dev/) (a fast, drop-in replacement for [`pre-commit`](https://pre-commit.com/)) to run automated checks before each commit, including linting, formatting, type checking, and spell checking. `prek` is pinned in [`.mise.toml`](./.mise.toml) and installed automatically by `mise`. Install the Git hooks with:
 
 ```bash
-uv run pre-commit install
+mise run prek-install
 ```
 
 Once installed, the hooks will run automatically on `git commit`. You can also run them manually on all files with:
 
 ```bash
-uv run pre-commit run --all-files
+mise run prek
 ```
 
+(`mise run` works whether or not `mise` is activated in your shell; the underlying commands are `prek install` and `prek run --all-files`.)
+
 ### Code Quality Tools
 
 All Python code must pass the following checks:
 
 - **[Ruff](https://docs.astral.sh/ruff/)** for linting and formatting
 - **[Pyright](https://github.com/microsoft/pyright)** for type checking
 
-These tools are run automatically by the pre-commit hooks, but can also be run manually:
+These tools are run automatically by the prek hooks, but can also be run manually:
 
 ```bash
 # Lint and type check
@@ -55,7 +57,7 @@ All Python code should include type hints. Configuration for Ruff and Pyright is
 Pull requests are the best way to propose changes to the codebase. We actively welcome your pull requests:
 
 1. Fork the repo and create your branch from `act4`.
-2. Set up pre-commit hooks and ensure all checks pass (see [Development Setup](#development-setup)).
+2. Set up prek hooks and ensure all checks pass (see [Development Setup](#development-setup)).
 3. If you have added or modified tests, ensure they compile and pass by running `make` with an appropriate [DUT configuration](./README.md#configuration). A good choice for testing is `make spike`. To also verify coverage, run `make coverage`.
 4. If you have added or modified coverpoints or test generators, refer to the [Developer's Guide](./docs/DeveloperGuide.md) for the expected workflow.
 5. If you have updated the docs, ensure that they render correctly in the respective format.

Dockerfile

@@ -21,8 +21,8 @@
 # Global ARGs - declared before any FROM so they are overridable across all stages.
 # Each stage that uses them must redeclare them with a bare ARG (no default) to bring them into scope.
 ARG RISCV_TOOLCHAIN_PREFIX=/opt/riscv
-ARG SAIL_VERSION=0.10
-ARG RISCV_TOOLCHAIN_VERSION=2026.04.05
+ARG SAIL_VERSION=0.11
+ARG RISCV_TOOLCHAIN_VERSION=2026.04.26
 
 # Stage 1: build riscv-gnu-toolchain
 #
@@ -34,61 +34,61 @@ ARG RISCV_TOOLCHAIN_PREFIX
 ARG RISCV_TOOLCHAIN_VERSION
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
-    autoconf \
-    automake \
-    autotools-dev \
-    bc \
-    bison \
-    build-essential \
-    cmake \
-    ca-certificates \
-    curl \
-    flex \
-    gawk \
-    gperf \
-    git \
-    libexpat-dev \
-    libglib2.0-dev \
-    libgmp-dev \
-    libmpc-dev \
-    libmpfr-dev \
-    libncurses-dev \
-    libslirp-dev \
-    libtool \
-    ninja-build \
-    patchutils \
-    python3 \
-    python3-tomli \
-    texinfo \
-    zlib1g-dev
+  autoconf \
+  automake \
+  autotools-dev \
+  bc \
+  bison \
+  build-essential \
+  cmake \
+  ca-certificates \
+  curl \
+  flex \
+  gawk \
+  gperf \
+  git \
+  libexpat-dev \
+  libglib2.0-dev \
+  libgmp-dev \
+  libmpc-dev \
+  libmpfr-dev \
+  libncurses-dev \
+  libslirp-dev \
+  libtool \
+  ninja-build \
+  patchutils \
+  python3 \
+  python3-tomli \
+  texinfo \
+  zlib1g-dev
 
 RUN git clone --depth 1 --branch "${RISCV_TOOLCHAIN_VERSION}" https://github.com/riscv/riscv-gnu-toolchain /tmp/riscv-gnu-toolchain \
- && cd /tmp/riscv-gnu-toolchain \
- && sed -i 's/c,c++/c/g' Makefile.in \
- && sed -i 's/c,c++,fortran/c/g' Makefile.in \
- && ./configure \
-        --prefix="${RISCV_TOOLCHAIN_PREFIX}" \
-        --disable-gdb \
-        --disable-qemu \
-        --disable-linux \
-        --disable-nls \
-        --enable-strip \
- && GCC_EXTRA_CONFIGURE_FLAGS="\
---enable-languages=c \
---disable-gcov \
---disable-lto \
---disable-libgomp \
---disable-libssp \
---disable-libquadmath \
---disable-decimal-float \
---disable-libsanitizer \
---disable-libvtv \
---enable-static \
---disable-shared" \
-    BINUTILS_TARGET_FLAGS_EXTRA="--disable-gprof --disable-gprofng" \
-    LDFLAGS="-static -static-libgcc -static-libstdc++" \
-    make -j"$(nproc)" \
- && rm -rf /tmp/riscv-gnu-toolchain
+  && cd /tmp/riscv-gnu-toolchain \
+  && sed -i 's/c,c++/c/g' Makefile.in \
+  && sed -i 's/c,c++,fortran/c/g' Makefile.in \
+  && ./configure \
+  --prefix="${RISCV_TOOLCHAIN_PREFIX}" \
+  --disable-gdb \
+  --disable-qemu \
+  --disable-linux \
+  --disable-nls \
+  --enable-strip \
+  && GCC_EXTRA_CONFIGURE_FLAGS="\
+  --enable-languages=c \
+  --disable-gcov \
+  --disable-lto \
+  --disable-libgomp \
+  --disable-libssp \
+  --disable-libquadmath \
+  --disable-decimal-float \
+  --disable-libsanitizer \
+  --disable-libvtv \
+  --enable-static \
+  --disable-shared" \
+  BINUTILS_TARGET_FLAGS_EXTRA="--disable-gprof --disable-gprofng" \
+  LDFLAGS="-static -static-libgcc -static-libstdc++" \
+  make -j"$(nproc)" \
+  && rm -rf /tmp/riscv-gnu-toolchain
 
 # Stage 2: install mise, then use it to install uv (Python) and Ruby, and pre-install the riscv-unified-db Bundler gem,
 # and pre-download all Python dependencies via uv sync.
@@ -105,14 +105,14 @@ ARG DEBIAN_FRONTEND=noninteractive
 
 # mise needs curl + ca-certificates to download tools, build-essential is needed for installation of Ruby gems.
 RUN apt-get update && apt-get install -y --no-install-recommends \
-    ca-certificates \
-    curl \
-    build-essential \
- && rm -rf /var/lib/apt/lists/*
+  ca-certificates \
+  curl \
+  build-essential \
+  && rm -rf /var/lib/apt/lists/*
 
 ENV MISE_YES=1 \
-    HOME=/home/shared \
-    PATH="/home/shared/.local/bin:${PATH}"
+  HOME=/home/shared \
+  PATH="/home/shared/.local/bin:${PATH}"
 
 RUN mkdir -p /home/shared
 
@@ -127,9 +127,9 @@ COPY . /act4/
 # Pre-install the riscv-unified-db gem into the mise-managed Ruby's gem dir so `bundle install` is a no-op at runtime.
 # Pre-download all Python dependencies so `uv sync` is a no-op at runtime.
 RUN cd /act4 \
- && mise install \
- && mise exec -- bundle install --gemfile=framework/src/act/data/Gemfile \
- && mise exec -- uv sync
+  && mise install \
+  && mise exec -- bundle install --gemfile=framework/src/act/data/Gemfile \
+  && mise exec -- uv sync
 
 # Stage 3: final runtime image
 FROM ubuntu:24.04@sha256:c4a8d5503dfb2a3eb8ab5f807da5bc69a85730fb49b5cfca2330194ebcc41c7b
@@ -143,27 +143,27 @@ ARG RISCV_TOOLCHAIN_PREFIX
 ARG SAIL_VERSION
 
 ENV TZ="${TZ}" \
-    SAIL_PREFIX=/opt/sail \
-    MISE_YES=1 \
-    HOME=/home/shared
+  SAIL_PREFIX=/opt/sail \
+  MISE_YES=1 \
+  HOME=/home/shared
 ENV PATH="${RISCV_TOOLCHAIN_PREFIX}/bin:${SAIL_PREFIX}/bin:/home/shared/.local/bin:${PATH}"
 
 # Runtime-only packages:
 #   - make, ca-certificates: drive the ACT4 Makefile
 #   - curl: required to fetch the sail-riscv release archive
 RUN apt-get update && apt-get install -y --no-install-recommends \
-    ca-certificates \
-    curl \
-    make \
- && rm -rf /var/lib/apt/lists/*
+  ca-certificates \
+  curl \
+  make \
+  && rm -rf /var/lib/apt/lists/*
 
 # Fetch and install sail-riscv directly into the final image
 RUN SAIL_OS="$(uname -s)" \
- && SAIL_ARCH="$(uname -m)" \
- && mkdir -p "${SAIL_PREFIX}" \
- && curl --location --fail \
-      "https://github.com/riscv/sail-riscv/releases/download/${SAIL_VERSION}/sail-riscv-${SAIL_OS}-${SAIL_ARCH}.tar.gz" \
-    | tar xz --directory="${SAIL_PREFIX}" --strip-components=1
+  && SAIL_ARCH="$(uname -m)" \
+  && mkdir -p "${SAIL_PREFIX}" \
+  && curl --location --fail \
+  "https://github.com/riscv/sail-riscv/releases/download/${SAIL_VERSION}/sail-riscv-${SAIL_OS}-${SAIL_ARCH}.tar.gz" \
+  | tar xz --directory="${SAIL_PREFIX}" --strip-components=1
 
 COPY --from=toolchain-builder "${RISCV_TOOLCHAIN_PREFIX}" "${RISCV_TOOLCHAIN_PREFIX}"
 COPY --from=mise-fetcher      /act4                       /act4
@@ -174,8 +174,8 @@ RUN chmod -R 777 /act4 /home/shared
 
 # Smoke-test: verify all the binaries landed correctly (runs as root during build, before USER switch)
 RUN riscv64-unknown-elf-gcc --version \
- && sail_riscv_sim --version \
- && mise --version
+  && sail_riscv_sim --version \
+  && mise --version
 
 # Default user with ID 1000 matching typical desktop installation
 USER ubuntu