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Cycles: Add an option to build single kernel only which fits current CPU

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This seems quite useful for the development, so you don't need to wait
all the kernels to be re-compiled when working on a new feature, which
speeds up re-iteration.

Marked as an advanced option, so if it doesn't work so well in practice
it's safe to revert anyway.
This commit is contained in:
Sergey Sharybin
2016-03-25 16:09:05 +01:00
parent 700722f686
commit e4a265f058
4 changed files with 42 additions and 3 deletions
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30
intern/cycles/kernel/kernels/cpu/kernel.cpp
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@@ -16,11 +16,39 @@
/* CPU kernel entry points */
/* On x86-64, we can assume SSE2, so avoid the extra kernel and compile this one with SSE2 intrinsics */
/* On x86-64, we can assume SSE2, so avoid the extra kernel and compile this
* one with SSE2 intrinsics.
*/
#if defined(__x86_64__) || defined(_M_X64)
# define __KERNEL_SSE2__
#endif
/* When building kernel for native machine detect kernel features from the flags
* set by compiler.
*/
#ifdef WITH_KERNEL_NATIVE
# ifdef __SSE2__
# ifndef __KERNEL_SSE2__
# define __KERNEL_SSE2__
# endif
# endif
# ifdef __SSE3__
# define __KERNEL_SSE3__
# endif
# ifdef __SSSE3__
# define __KERNEL_SSSE3__
# endif
# ifdef __SSE4_1__
# define __KERNEL_SSE41__
# endif
# ifdef __AVX__
# define __KERNEL_AVX__
# endif
# ifdef __AVX2__
# define __KERNEL_AVX2__
# endif
#endif
/* quiet unused define warnings */
#if defined(__KERNEL_SSE2__)
/* do nothing */