从Haskell生成向量代码? [英] Generate vector code from Haskell?
问题描述
是否有可能让GHC为各代SSE生成SIMD码?
例如。得到这样的程序
import Data.Array.Vector
main = print。 sumU $(enumFromToFracU 1 10000000 :: UArr Double)
我可以看到生成的代码(编译为64位x86)以标量模式(C和asm后端)使用SSE指令。所以添加,而不是addpd。对于我使用矢量指令的程序类型,对于性能很重要。有没有一种简单的方法让像我这样的新手能够让GHC使用SSE来SIMD化代码?
是的,它是可能的,通过C后端,但它是试错。我使用的标志:
gcc -O2 -funbox-strict-fields -fvia-C -optc-O3 -march = native -optc-msse4
然后希望GCC通过uvector代码发现GHC产生的紧密循环,并意识到SIMD潜力。
Is it possible to get GHC to produce SIMD code for the various SSE generations?
Eg. got a program like this
import Data.Array.Vector
main = print . sumU $ (enumFromToFracU 1 10000000 :: UArr Double)
I can see the generated code (compiled for 64 bit x86) use SSE instructions in scalar mode (both C and asm backends). So addsd rather than addpd. For the types of programs I work on the use of vector instructions is important for performance. Is there an easy way for a newbie such as myself to get GHC to SIMDize the code using SSE?
Yes, it is possible, via the C backend, but it is trial and error. The flags I use:
gcc -O2 -funbox-strict-fields -fvia-C -optc-O3 -march=native -optc-msse4
Then hope GCC spots the tight loop GHC generates via the uvector code, and realises there is SIMD potential.
这篇关于从Haskell生成向量代码?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!