Target-dependent config like Barbell, no special treatment for MacOS arm64 in CI

Author: bede

.cargo/config.toml

@@ -1,2 +1,9 @@
+[target.'cfg(target_arch="x86_64")']
+rustflags = ["-C", "target-cpu=x86-64-v3"]
+
+[target.'cfg(target_arch="aarch64")']
+rustflags = ["-C", "target-cpu=generic"]
+
 [build]
+# Fallback
 rustflags = ["-C", "target-cpu=native"]

.github/workflows/test.yml

@@ -26,13 +26,5 @@ jobs:
             ~/.cargo/git
             target
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
-      - name: Override target-cpu on macOS
-        if: runner.os == 'macOS'
-        run: |
-          mkdir -p .cargo
-          cat > .cargo/config.toml << 'EOF'
-          [build]
-          rustflags = ["-C", "target-cpu=apple-m1"]
-          EOF
       - name: Run tests
         run: cargo test --verbose