add rvv-vls backend (#2593)

.github/workflows/rvv-1024-clang-18.yml

@@ -19,11 +19,11 @@ jobs:
         sudo apt-get install -y cmake make g++-riscv64-linux-gnu qemu-user-static clang-18
     - name: Build
       run: |
-        CXX=clang++-18 CXXFLAGS="--target=riscv64-linux-gnu -march=rv64gcv_zvbb" \
-        cmake --toolchain=cmake/toolchains-ci/riscv64-linux-gnu.cmake -DCMAKE_BUILD_TYPE=Release -B build
-        cmake --build build/ -j$(nproc)
+        CC=clang-18 CXX=clang++-18 CFLAGS="--target=riscv64-linux-gnu -march=rv64gcv_zvbb" CXXFLAGS="${CFLAGS}" \
+        cmake --toolchain=cmake/toolchains-ci/riscv64-linux-gnu.cmake -DSIMDJSON_DEVELOPER_MODE=ON -B build
+        cmake --build build/ -j$(nproc) --config Release
     - name: Test VLEN=1024
       run: |
-        export QEMU_LD_PREFIX="/usr/riscv64-linux-gnu"
-        export QEMU_CPU="rv64,v=on,zvbb=on,vlen=1024,rvv_ta_all_1s=on,rvv_ma_all_1s=on"
+        QEMU_LD_PREFIX="/usr/riscv64-linux-gnu" \
+        QEMU_CPU="rv64,v=on,zvbb=on,vlen=1024,rvv_ta_all_1s=on,rvv_ma_all_1s=on" \
         ctest --timeout 1800 --output-on-failure --test-dir build -j $(nproc)

.github/workflows/rvv-128-clang-17.yml

@@ -19,11 +19,6 @@ jobs:
         sudo apt-get install -y cmake make g++-riscv64-linux-gnu qemu-user-static clang-17
     - name: Build
       run: |
-        CXX=clang++-17 CXXFLAGS="--target=riscv64-linux-gnu -march=rv64gcv" \
-        cmake --toolchain=cmake/toolchains-ci/riscv64-linux-gnu.cmake -DCMAKE_BUILD_TYPE=Release -B build
-        cmake --build build/ -j$(nproc)
-    - name: Test VLEN=128
-      run: |
-        export QEMU_LD_PREFIX="/usr/riscv64-linux-gnu"
-        export QEMU_CPU="rv64,v=on,vlen=128,rvv_ta_all_1s=on,rvv_ma_all_1s=on"
-        ctest --timeout 1800 --output-on-failure --test-dir build -j $(nproc)
+        CC=clang-17 CXX=clang++-17 CFLAGS="--target=riscv64-linux-gnu -march=rv64gcv" CXXFLAGS="${CFLAGS}" \
+        cmake --toolchain=cmake/toolchains-ci/riscv64-linux-gnu.cmake -DSIMDJSON_DEVELOPER_MODE=ON -B build
+        cmake --build build/ -j$(nproc) --config Release

.github/workflows/rvv-128-clang-20.yml

@@ -0,0 +1,39 @@
+name: Ubuntu rvv VLEN=128 (clang 20)
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-24.04
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install packages
+      run: |
+        sudo apt-get update -q -y
+        sudo apt-get install -y cmake make g++-riscv64-linux-gnu qemu-user-static clang-20
+    - name: Build
+      run: |
+        CC=clang-20 CXX=clang++-20 CFLAGS="--target=riscv64-linux-gnu -march=rv64gcv" CXXFLAGS="${CFLAGS}" \
+        cmake --toolchain=cmake/toolchains-ci/riscv64-linux-gnu.cmake -DSIMDJSON_DEVELOPER_MODE=ON -B build
+        cmake --build build/ -j$(nproc) --config Release
+    - name: Test VLEN=128
+      run: |
+        QEMU_LD_PREFIX="/usr/riscv64-linux-gnu" \
+        QEMU_CPU="rv64,v=on,vlen=128,rvv_ta_all_1s=on,rvv_ma_all_1s=on" \
+        ctest --timeout 1800 --output-on-failure --test-dir build -j $(nproc)
+    - name: Build VLS
+      run: |
+        CC=clang-20 CXX=clang++-20 CFLAGS="--target=riscv64-linux-gnu -march=rv64gcv_zvl128b_zba_zbb_zbc -mrvv-vector-bits=zvl" CXXFLAGS="${CFLAGS}" \
+        cmake --toolchain=cmake/toolchains-ci/riscv64-linux-gnu.cmake -DSIMDJSON_DEVELOPER_MODE=ON -B build-vls
+        cmake --build build-vls/ -j$(nproc) --config Release
+    - name: Test VLEN=128 VLS
+      run: |
+        QEMU_LD_PREFIX="/usr/riscv64-linux-gnu" \
+        QEMU_CPU="rv64,v=on,zba=on,zbb=on,zbc=on,vlen=128,rvv_ta_all_1s=on,rvv_ma_all_1s=on" \
+        ctest --timeout 1800 --output-on-failure --test-dir build-vls -j $(nproc)

.github/workflows/rvv-256-gcc-14.yml

@@ -19,11 +19,21 @@ jobs:
         sudo apt-get install -y cmake make g++-14-riscv64-linux-gnu qemu-user-static
     - name: Build
       run: |
-        CXX=riscv64-linux-gnu-g++-14 CXXFLAGS=-march=rv64gcv \
-        cmake --toolchain=cmake/toolchains-ci/riscv64-linux-gnu.cmake -DCMAKE_BUILD_TYPE=Release -B build
-        cmake --build build/ -j$(nproc)
+        CC=riscv64-linux-gnu-gcc-14 CXX=riscv64-linux-gnu-g++-14 CFLAGS=-march=rv64gcv CXXFLAGS="${CFLAGS}" \
+        cmake --toolchain=cmake/toolchains-ci/riscv64-linux-gnu.cmake -DSIMDJSON_DEVELOPER_MODE=ON -B build
+        cmake --build build/ -j$(nproc) --config Release
     - name: Test VLEN=256
       run: |
-        export QEMU_LD_PREFIX="/usr/riscv64-linux-gnu"
-        export QEMU_CPU="rv64,v=on,zvbb=on,vlen=256,rvv_ta_all_1s=on,rvv_ma_all_1s=on"
+        QEMU_LD_PREFIX="/usr/riscv64-linux-gnu" \
+        QEMU_CPU="rv64,v=on,zvbb=on,vlen=256,rvv_ta_all_1s=on,rvv_ma_all_1s=on" \
         ctest --timeout 1800 --output-on-failure --test-dir build -j $(nproc)
+    - name: Build VLS
+      run: |
+        CC=riscv64-linux-gnu-gcc-14 CXX=riscv64-linux-gnu-g++-14 CFLAGS="-march=rv64gcv_zvl256b -mrvv-vector-bits=zvl" CXXFLAGS="${CFLAGS}" \
+        cmake --toolchain=cmake/toolchains-ci/riscv64-linux-gnu.cmake -DSIMDJSON_DEVELOPER_MODE=ON -B build-vls
+        cmake --build build-vls/ -j$(nproc) --config Release
+    - name: Test VLEN=256 VLS
+      run: |
+        QEMU_LD_PREFIX="/usr/riscv64-linux-gnu" \
+        QEMU_CPU="rv64,v=on,zvbb=on,vlen=256,rvv_ta_all_1s=on,rvv_ma_all_1s=on" \
+        ctest --timeout 1800 --output-on-failure --test-dir build-vls -j $(nproc)

.github/workflows/rvv-512-clang-19.yml

@@ -0,0 +1,39 @@
+name: Ubuntu rvv VLEN=512 (clang 19)
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-24.04
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install packages
+      run: |
+        sudo apt-get update -q -y
+        sudo apt-get install -y cmake make g++-riscv64-linux-gnu qemu-user-static clang-19
+    - name: Build
+      run: |
+        CC=clang-19 CXX=clang++-19 CFLAGS="--target=riscv64-linux-gnu -march=rv64gcv" CXXFLAGS="${CFLAGS}" \
+        cmake --toolchain=cmake/toolchains-ci/riscv64-linux-gnu.cmake -DSIMDJSON_DEVELOPER_MODE=ON -B build
+        cmake --build build/ -j$(nproc) --config Release
+    - name: Test VLEN=512
+      run: |
+        QEMU_LD_PREFIX="/usr/riscv64-linux-gnu" \
+        QEMU_CPU="rv64,v=on,vlen=512,rvv_ta_all_1s=on,rvv_ma_all_1s=on" \
+        ctest --timeout 1800 --output-on-failure --test-dir build -j $(nproc)
+    - name: Build VLS
+      run: |
+        CC=clang-19 CXX=clang++-19 CFLAGS="--target=riscv64-linux-gnu -march=rv64gcv_zvl512b_zba_zbb_zbc -mrvv-vector-bits=zvl" CXXFLAGS="${CFLAGS}" \
+        cmake --toolchain=cmake/toolchains-ci/riscv64-linux-gnu.cmake -DSIMDJSON_DEVELOPER_MODE=ON -B build-vls
+        cmake --build build-vls/ -j$(nproc) --config Release
+    - name: Test VLEN=512 VLS
+      run: |
+        QEMU_LD_PREFIX="/usr/riscv64-linux-gnu" \
+        QEMU_CPU="rv64,v=on,zba=on,zbb=on,zbc=on,vlen=512,rvv_ta_all_1s=on,rvv_ma_all_1s=on" \
+        ctest --timeout 1800 --output-on-failure --test-dir build-vls -j $(nproc)