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The attached patch cleans up Opus's x86 intrinsics configury. It: * Makes ?enable-intrinsics work with clang and other non-GCC compilers * Enables RTCD for the floating-point-mode SSE code in Celt. * Disables use of RTCD in cases where the compiler targets an instruction set by default. * Enables the SSE4.1 Silk optimizations that apply to the common parts of Silk when Opus is built in

...lags. Otherwise, compilers are allowed to take advantage of (e.g.) -msse4.1 to generate code that uses SSE4.1 instructions, even when no SSE4.1 intrinsics are explicitly used in the source. Reorganize x86 SSE intrinsics code. Add intrinsics support to Visual Studio build. Use ProjectReference rather than AdditionalDependencies for test programs, so build dependencies are right. Makefile.am | 41 ++-- celt/arm/armcpu.c | 6 +- celt/arm/pitch_arm.h | 4 +- celt/bands.c | 6 +-...