[klas2ep12] empty commit - dump performance on clang11

-------------------------------------------------------------------------
Process                     = EPOCH1_EEMUMU_CPP
FP precision                = DOUBLE (NaN/abnormal=0, zero=0 )
Internal loops fptype_sv    = VECTOR[1] ('none': scalar, no SIMD)
MatrixElements compiler     = clang 11.0.0
EvtsPerSec[MatrixElems] (3) = ( 1.263547e+06                 )  sec^-1
MeanMatrixElemValue         = ( 1.372113e-02 +- 3.270608e-06 )  GeV^0
TOTAL       :     7.168746 sec
real    0m7.176s
=Symbols in CPPProcess.o= (~sse4: 1241) (avx2:    0) (512y:    0) (512z:    0)
-------------------------------------------------------------------------
Process                     = EPOCH2_EEMUMU_CPP
FP precision                = DOUBLE (NaN/abnormal=0, zero=0 )
MatrixElements compiler     = clang 11.0.0
EvtsPerSec[MatrixElems] (3) = ( 1.218104e+06                 )  sec^-1
MeanMatrixElemValue         = ( 1.372113e-02 +- 3.270608e-06 )  GeV^0
TOTAL       :     7.455322 sec
real    0m7.463s
=Symbols in CPPProcess.o= (~sse4: 1165) (avx2:    0) (512y:    0) (512z:    0)
-------------------------------------------------------------------------

The build with vectors still fails also on clang11 in the same place

clang++: /build/dkonst/CONTRIB/build/contrib/clang-11.0.0/src/clang/11.0.0/clang/lib/CodeGen/CGExpr.cpp:613: clang::CodeGen::RValue clang::CodeGen::CodeGenFunction::EmitReferenceBindingToExpr(const clang::Expr*): Assertion `LV.isSimple()' failed.
PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0.      Program arguments: /cvmfs/sft.cern.ch/lcg/releases/clang/11.0.0-77a9f/x86_64-centos7/bin/clang++ -O3 -std=c++17 -I. -I../../src -I../../../../../tools -Wall -Wshadow -Wextra -DMGONGPU_COMMONRAND_ONHOST -ffast-math -march=skylake-avx512 -mprefer-vector-width=256 -c CPPProcess.cc -o CPPProcess.o
1.      <eof> parser at end of file
2.      Per-file LLVM IR generation
3.      ../../src/mgOnGpuVectors.h:59:16: Generating code for declaration 'mgOnGpu::cxtype_v::operator[]'
 #0 0x0000000001ce208a llvm::sys::PrintStackTrace(llvm::raw_ostream&) (/cvmfs/sft.cern.ch/lcg/releases/clang/11.0.0-77a9f/x86_64-centos7/bin/clang+++0x1ce208a)
 #1 0x0000000001cdfe94 llvm::sys::RunSignalHandlers() (/cvmfs/sft.cern.ch/lcg/releases/clang/11.0.0-77a9f/x86_64-centos7/bin/clang+++0x1cdfe94)
 #2 0x0000000001c52d98 CrashRecoverySignalHandler(int) (/cvmfs/sft.cern.ch/lcg/releases/clang/11.0.0-77a9f/x86_64-centos7/bin/clang+++0x1c52d98)
 madgraph5#3 0x00007f1836000630 __restore_rt (/lib64/libpthread.so.0+0xf630)
 madgraph5#4 0x00007f18350f13d7 raise (/lib64/libc.so.6+0x363d7)
 madgraph5#5 0x00007f18350f2ac8 abort (/lib64/libc.so.6+0x37ac8)