| // Copyright 2020 Google LLC |
| // |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "include/private/SkVx.h" |
| #include <emscripten.h> |
| #include <stdio.h> |
| |
| // How to read this file: |
| // - Lines with "//GOOD" are compatible with WASM SIMD and are automatically compiled |
| // into WASM SIMD operations by emscripten. |
| // - Lines with "//N/A" are not operations that are compatible with this type of data. |
| // - Lines with "GOOD (FIXED)" are compatible with WASM SIMD but are NOT automatically |
| // compiled into WASM SIMD operations by emscripten. Special WASM SIMD intrinsics have been |
| // specified in skia/include/private/SkVx.h to tell emscripten how to compile them to WASM SIMD |
| // operations. |
| // - Lines with "//not available in wasm" do not have compatible WASM SIMD operations. Emscripten |
| // compiles these operations into non-SIMD WASM. |
| // - Lines with "//???" may be more complex and it is not clear if they have compatible WASM SIMD |
| // operations. More work could be needed on these operations. |
| |
| // How to use this file for testing WASM SIMDification of operations: |
| // 1. Reference https://github.com/WebAssembly/simd/blob/master/proposals/simd/SIMD.md |
| // and https://github.com/llvm/llvm-project/blob/master/clang/lib/Headers/wasm_simd128.h |
| // to check if a WASM SIMD operation exists which correspond to any given line of code. |
| // 2. Uncomment that line of code. |
| // 3. Run `./build_simd_test.sh simd_float_capabilities.cpp` to build and output WASM SIMD operations |
| // present in the compiled WASM. |
| // 4. Read the output in the console to see if the WASM SIMD operations you expected were present in |
| // the resulting compiled WASM. |
| |
| int main() { |
| auto vec1 = skvx::Vec<4, float>({11.f, -22.f, 33.f, -44.f}); |
| auto vec2 = skvx::Vec<4, float>({-.5f, 100.5f, 100.5f, -.5f}); |
| |
| //auto vec3 = skvx::join(vec1, vec2); //not available in wasm |
| // note: may be possible using "widening" |
| |
| //vec1 = vec1 + vec2; //GOOD |
| //vec1 = vec1 - vec2; //GOOD |
| //vec1 = vec1 * vec2; //GOOD |
| //vec1 = vec1 / vec2; //GOOD |
| |
| //vec1 = vec1 ^ vec2; //N/A |
| //vec1 = vec1 & vec2; //N/A |
| //vec1 = vec1 | vec2; //N/A |
| |
| //vec1 = !vec1; //N/A |
| //vec1 = -vec1; //GOOD |
| //vec1 = ~vec1; //N/A |
| |
| //vec1 = vec1 << 2; //N/A |
| //vec1 = vec1 >> 2; //N/A |
| |
| //auto vec3 = vec1 == vec2; //GOOD |
| //auto vec3 = vec1 != vec2; //GOOD |
| //auto vec3 = vec1 <= vec2; //GOOD |
| //auto vec3 = vec1 >= vec2; //GOOD |
| //auto vec3 = vec1 < vec2; //GOOD |
| //auto vec3 = vec1 > vec2; //GOOD |
| |
| //auto vec3 = skvx::any(vec1); //N/A |
| //auto vec3 = skvx::all(vec1); //N/A |
| |
| //vec1 = skvx::max(vec1, vec2); //GOOD (FIXED) |
| //vec1 = skvx::min(vec1, vec2); //GOOD (FIXED) |
| |
| //vec1 = skvx::pow(vec1, vec2); //not available in wasm |
| //vec1 = skvx::atan(vec1); //not available in wasm |
| //vec1 = ceil(vec1); //not available in wasm, note: maybe could use "comparisons" |
| //vec1 = skvx::floor(vec1); //not available in wasm |
| //vec1 = skvx::trunc(vec1); //not available in wasm |
| // note: maybe possible using trunc_sat_f32x4_s and convert_i32x4_s? |
| //vec1 = skvx::round(vec1); //not available in wasm |
| // note: maybe possible using trunc_sat_f32x4_s and convert_i32x4_s? |
| //vec1 = skvx::sqrt(vec1); //GOOD (FIXED) |
| //vec1 = skvx::abs(vec1); //GOOD (FIXED) |
| //vec1 = skvx::sin(vec1); //not available in wasm |
| //vec1 = skvx::cos(vec1); //not available in wasm |
| //vec1 = skvx::tan(vec1); //not available in wasm |
| |
| //auto vec3 = skvx::lrint(vec1); //??? |
| // note: may be possible using f32x4.convert_i32x4_s, would need to test correctness. |
| |
| //vec1 = skvx::rcp(vec1); //GOOD (FIXED) previous: N/A-BAD, doesn't use SIMD div |
| //vec1 = skvx::rsqrt(vec1); //GOOD (FIXED) previous: BAD, doesn't use SIMD sqrt or div |
| |
| //vec1 = skvx::if_then_else(vec1, vec1, vec2); //N/A |
| |
| //vec1 = skvx::shuffle<2,1,0,3>(vec1); //GOOD |
| |
| //vec1 = skvx::fma(vec1, vec2, vec1); //not available in wasm (no fused multiply-add is available) |
| //vec1 = skvx::fract(vec1); //??? |
| |
| //printf("result: { %f, %f, %f, %f }\n", vec1[0], vec1[1], vec1[2], vec1[3]); |
| |
| return 0; |
| } |