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.<ohartman_at_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. OliverReceived on Thu Jun 16 2011 - 05:04:15 UTC
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