On 06/16/11 09:04, O. Hartmann wrote:
On 06/15/11 20:36, Doug Rabson wrote:
You could try using the standard<xmmintrin.h> header - that has inline
functions which should cover all the SSE instructions.
On 12 June 2011 17:43, Hartmann, O.<ohart...@zedat.fu-berlin.de> wrote:
I use some numerical code utilizing the SIMD units of modern X86
architectures. Code compiles well using gcc/gcc46,
but clang does not know about the __builtin_ia32_xxxxx() statements.
How to
treat those in clang and how to make
C code compiling with clang utilizing those __builtin_ia32 statements?
Thanks,
Oliver
Thanks for this hint.
I tried, and its a negative. I'm quite new to the usage of builtins and
I oriented myself using gcc style __builtins. Especially
__builtin_ia32_mulpd(()), __builtin_ia32_addpd(()). The aim is to add,
mul, div and sub two 64 Bit doubles residing in a 128 Bit xmm register;
by doing this, a struct contains two unions, each 128 bit, to simulate a
4d vector, so I' capable of adding, multiplying etc. vectors using the
SIMD units. It seems that there is a more 'sophisticated' way than
simply apllying the __builtin assembly equivalences.
Oliver
_______________________________________________
Sorry for the noise,
got it. Using _mm_add_pd() etc.
Oliver
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