Implement Testing on CI via wasmtime

Author: CryZe

.cargo/config.toml

@@ -0,0 +1,2 @@
+[target.wasm32-wasi]
+runner = "wasmtime run --wasm-features all --dir ."

.github/workflows/main.yml

@@ -53,3 +53,36 @@ jobs:
       env:
         RUSTFLAGS: -Ctarget-feature=+avx2
       run: cargo test --verbose --all-features
+
+  wasm:
+    runs-on: ubuntu-18.04
+    strategy:
+      matrix:
+        rust:
+          - nightly
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    - name: Install toolchain
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: ${{ matrix.rust }}
+        override: true
+        target: wasm32-wasi
+
+    - name: Install wasmtime
+      run: |
+        curl https://wasmtime.dev/install.sh -sSf | bash
+        echo "$HOME/.wasmtime/bin" >> $GITHUB_PATH
+
+    - name: Build with minimal features (no_std)
+      run: cargo build --target wasm32-wasi --verbose --no-default-features --features libm
+
+    - name: Run tests without SIMD
+      run: cargo test --target wasm32-wasi --verbose --no-default-features --features png-format
+
+    - name: Run tests with SIMD128
+      env:
+        RUSTFLAGS: -Ctarget-feature=+simd128,+bulk-memory,+nontrapping-fptoint,+sign-ext
+      run: cargo test --target wasm32-wasi --verbose --all-features

src/wide/i32x8_t.rs

@@ -61,6 +61,8 @@ impl i32x8 {
                 Self(blend_varying_i8_m256i(f.0, t.0, self.0))
             } else if #[cfg(all(feature = "simd", target_feature = "sse4.1"))] {
                 Self(blend_varying_i8_m128i(f.0, t.0, self.0), blend_varying_i8_m128i(f.1, t.1, self.1))
+            } else if #[cfg(all(feature = "simd", target_feature = "simd128"))] {
+                Self(v128_bitselect(t.0, f.0, self.0), v128_bitselect(t.1, f.1, self.1))
             } else {
                 super::generic_bit_blend(self, t, f)
             }