FMA support in clang++-3.8 about grid

[paboyle]

Hi Jim,

can you add -mfma to the Clang++ flags.

I think/suspect that clang is not supporting it by default when it does make sense that "avx2" should
include all of avx2.

On my haswell MacBook, I use clang 3.8:

../../configure --enable-precision=single --enable-simd=AVX2 CXXFLAGS=-mavx2 -mfma -O3 -std=c++11 -fopenmp LDFLAGS=-L/opt/llvm-3.8/lib/ LIBS=-lgmp -lmpfr -fopenmp --enable-comms=none CXX=/opt/llvm-3.8/bin/clang++

[paboyle]

any progress -- I know it is PR but I'd like to close issues before lattice conference ;)

[james-simone]

Hi Peter,

Sorry for the slow response! I followed you suggestion and the code compiles and runs.

--jim

On 07/06/2016 04:56 PM, Peter Boyle wrote:

any progress -- I know it is PR but I'd like to close issues before lattice conference ;)

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--jim

[paboyle]

Thanks Jim,
closing.