GCC 7.0 vs. 6.3 vs. 5.4 vs. 4.9 Compiler Benchmarks On Linux x86_64

Himeno is running the same speed with GCC 6 and 7, which is much faster than GCC 5 and older.

A minor boost appears for 7-zip with GCC7.

Compiling ImageMagick was faster with GCC 7 than GCC 6, but still slower than GCC 5.

Building the Linux kernel was a few seconds slower with GCC 7 over GCC 6.

The PHP timed compilation was about the same.