gistfile1.txt

% sh -x do.sh
+ diff modifiedbench.cpp /home/sjs/klauslerbench.cpp
8,10d7
< //
< // The linux common case does not have carriage returns
< // Define USE_NL or USE_CR
65d61
< #if USE_CR
67,71d62
< #elif USE_NL
<       src[j] = '\n';
< #else
<     #error "Plese define one of USE_NL or USE_CR"
< #endif
+ g++ --version
g++ (GCC) 8.3.1 20190507 (Red Hat 8.3.1-4)
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

+ lscpu
Architecture:        aarch64
Byte Order:          Little Endian
CPU(s):              224
On-line CPU(s) list: 0-223
Thread(s) per core:  4
Core(s) per socket:  28
Socket(s):           2
NUMA node(s):        2
Vendor ID:           Cavium
Model:               1
Model name:          ThunderX2 99xx
Stepping:            0x1
BogoMIPS:            400.00
L1d cache:           32K
L1i cache:           32K
L2 cache:            256K
L3 cache:            32768K
NUMA node0 CPU(s):   0-111
NUMA node1 CPU(s):   112-223
Flags:               fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics cpuid asimdrdm
+ g++ -O3 -std=c++11 ./modifiedbench.cpp -DREMOVE_CARRIAGE_RETURNS -DUSE_CR
+ ./a.out
996147

real    0m16.454s
user    0m16.454s
sys     0m0.000s
+ g++ -O3 -std=c++11 ./modifiedbench.cpp -DREMOVE_IF -DUSE_CR
+ ./a.out
996147

real    0m11.794s
user    0m11.794s
sys     0m0.000s
+ g++ -O3 -std=c++11 ./modifiedbench.cpp -DREMOVE_CARRIAGE_RETURNS -DUSE_NL
+ ./a.out
1048576

real    0m2.350s
user    0m2.340s
sys     0m0.010s
+ g++ -O3 -std=c++11 ./modifiedbench.cpp -DREMOVE_IF -DUSE_NL
+ ./a.out
1048576

real    0m7.825s
user    0m7.825s
sys     0m0.000s