diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index fadb158..a04a6b3 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -6,113 +6,44 @@ name: Test
 on: [push, pull_request]
 
 jobs:
-  test-macos-llvm-14:
+  test-macos:
     runs-on: macos-latest
+    strategy:
+      matrix:
+        llvm: [14, 15, 16, 17]
     steps:
       - name: Checkout
         uses: actions/checkout@v2
+      - name: Update Homebrew
+        if: matrix.llvm == 17 # needed as long as LLVM 17 is still fresh
+        run: brew update
       - name: Install LLVM
-        run: |
-          brew update
-          brew install llvm@14
-      - name: Test LLVM 14
+        run: HOMEBREW_NO_AUTO_UPDATE=1 brew install llvm@${{ matrix.llvm }}
+      - name: Test LLVM ${{ matrix.llvm }}
         run:
-          go test -v -tags=llvm14
-  test-macos-llvm-15:
-    runs-on: macos-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-      - name: Install LLVM
-        run: |
-          brew update
-          brew install llvm@15
-      - name: Test LLVM 15
-        run:
-          go test -v -tags=llvm15
-  test-macos-llvm-16:
-    runs-on: macos-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-      - name: Install LLVM
-        run: |
-          brew update
-          brew install llvm@16
-      - name: Test LLVM 16
-        run:
-          go test -v -tags=llvm16
+          go test -v -tags=llvm${{ matrix.llvm }}
       - name: Test default LLVM
+        if: matrix.llvm == 16
         run:
           go test -v
-  test-macos-llvm-17:
-    runs-on: macos-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-      - name: Install LLVM
-        run: |
-          brew update
-          brew install llvm@17
-      - name: Test LLVM 17
-        run:
-          go test -v -tags=llvm17
-  test-linux-llvm-14:
+  test-linux:
     runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        llvm: [14, 15, 16, 17]
     steps:
       - name: Checkout
         uses: actions/checkout@v2
       - name: Install LLVM
         run: |
-          echo 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-14 main' | sudo tee /etc/apt/sources.list.d/llvm.list
+          echo 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-${{ matrix.llvm }} main' | sudo tee /etc/apt/sources.list.d/llvm.list
           wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
           sudo apt-get update
-          sudo apt-get install --no-install-recommends llvm-14-dev
-      - name: Test LLVM 14
+          sudo apt-get install --no-install-recommends llvm-${{ matrix.llvm }}-dev
+      - name: Test LLVM ${{ matrix.llvm }}
         run:
-          go test -v -tags=llvm14
-  test-linux-llvm-15:
-    runs-on: ubuntu-20.04
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-      - name: Install LLVM
-        run: |
-          echo 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-15 main' | sudo tee /etc/apt/sources.list.d/llvm.list
-          wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-          sudo apt-get update
-          sudo apt-get install --no-install-recommends llvm-15-dev
-      - name: Test LLVM 15
-        run:
-          go test -v -tags=llvm15
-  test-linux-llvm-16:
-    runs-on: ubuntu-20.04
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-      - name: Install LLVM
-        run: |
-          echo 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-16 main' | sudo tee /etc/apt/sources.list.d/llvm.list
-          wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-          sudo apt-get update
-          sudo apt-get install --no-install-recommends llvm-16-dev
-      - name: Test LLVM 16
-        run:
-          go test -v -tags=llvm16
+          go test -v -tags=llvm${{ matrix.llvm }}
       - name: Test default LLVM
+        if: matrix.llvm == 16
         run:
           go test -v
-  test-linux-llvm-17:
-    runs-on: ubuntu-20.04
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-      - name: Install LLVM
-        run: |
-          echo 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-17 main' | sudo tee /etc/apt/sources.list.d/llvm.list
-          wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-          sudo apt-get update
-          sudo apt-get install --no-install-recommends llvm-17-dev
-      - name: Test LLVM 17
-        run:
-          go test -v -tags=llvm17