[LLVMdev] JIT on Intel KNC

[Frank Winter]

Hi,

in the past few weeks we were able to confirm that the LLVM's JIT 
compiler can be used for our research project. This was confirmed for 
x86-64 architecture (with very good performance results by the way).

Now, one of our real target architecture is the Intel Xeon Phi (KNC) 
accelerator in a native execution model. When cross-compiling LLVM (3.4 
RC1) for Xeon Phi with CMake following the Intel guidelines (for general 
cross-compilation), the compilation process stops with

[ 88%] Building CXX object 
lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86ISelLowering.cpp.o
[ 88%] Building CXX object 
lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86InstrInfo.cpp.o
[ 88%] Building CXX object 
lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86JITInfo.cpp.o
/tmp/icpcI3Tb9Aas_.s: Assembler messages:
/tmp/icpcI3Tb9Aas_.s:48: Error: `movaps' is not supported on `k1om'
/tmp/icpcI3Tb9Aas_.s:49: Error: `movaps' is not supported on `k1om'
/tmp/icpcI3Tb9Aas_.s:50: Error: `movaps' is not supported on `k1om'
/tmp/icpcI3Tb9Aas_.s:51: Error: `movaps' is not supported on `k1om'

It seems LLVM JIT for KNC is new territory.Can the JIT be used on this 
architecture? Are there only small patches necessary to get this to work?

Frank