From 88a5f0d0d7aa80f885ab78107ec7362df58bbaa0 Mon Sep 17 00:00:00 2001
From: paul <paul@paul-deb>
Date: Thu, 1 Aug 2019 17:16:43 +0200
Subject: [PATCH] Consted the things

---
 CMakeLists.txt        | 11 +++++++++++
 sources/AudioBuffer.h | 12 ++++++------
 2 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 11d29a77..9b53ab80 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,6 +13,17 @@ if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" AND NOT ANDROID)
     add_link_options(-stdlib=libc++)   # New command on CMake master, not in 3.12 release
 endif()
 
+include(CheckCXXCompilerFlag)
+# CHECK_CXX_COMPILER_FLAG("-march=native" COMPILER_SUPPORTS_MARCH_NATIVE)
+# if(COMPILER_SUPPORTS_MARCH_NATIVE)
+#     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native")
+# endif()
+
+# CHECK_CXX_COMPILER_FLAG("-ffast-math" COMPILER_SUPPORTS_FASTMATH)
+# if(COMPILER_SUPPORTS_FASTMATH)
+#     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ffast-math")
+# endif()
+
 set(BUILD_TESTING OFF CACHE BOOL "Disable Abseil's tests")
 add_subdirectory(external/abseil-cpp)
 add_subdirectory(external/spdlog)
diff --git a/sources/AudioBuffer.h b/sources/AudioBuffer.h
index fcb9fba3..fbd2197f 100644
--- a/sources/AudioBuffer.h
+++ b/sources/AudioBuffer.h
@@ -75,14 +75,14 @@ public:
             const float* end = input + 2 * lastAligned;
             while (in < end)
             {
-                auto input0 = _mm_loadu_ps(in);
+                const auto input0 = _mm_loadu_ps(in);
                 in += 4;
-                auto input1 = _mm_loadu_ps(in);
+                const auto input1 = _mm_loadu_ps(in);
                 in += 4;
-                auto intermediate0 = _mm_unpacklo_ps(input0, input1);
-                auto intermediate1 = _mm_unpackhi_ps(input0, input1);
-                auto output0 = _mm_unpacklo_ps(intermediate0, intermediate1);
-                auto output1 = _mm_unpackhi_ps(intermediate0, intermediate1);
+                const auto intermediate0 = _mm_unpacklo_ps(input0, input1);
+                const auto intermediate1 = _mm_unpackhi_ps(input0, input1);
+                const auto output0 = _mm_unpacklo_ps(intermediate0, intermediate1);
+                const auto output1 = _mm_unpackhi_ps(intermediate0, intermediate1);
                 _mm_store_ps(out0, output0);
                 _mm_store_ps(out1, output1);
                 out0 += 4;