https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79390
--- Comment #19 from vincenzo Innocente <vincenzo.innocente at cern dot ch> --- Could you please have a look also to c++ and lto: this is what I get on my skylake: for c++ or lto -fno-split-paths pessimizes [innocent@vinavx3 scimark2TMP]$ gcc -march=native -Wall -Ofast *.c -lm ; ./a.out | grep LU LU Mflops: 5920.14 (M=100, N=100) [innocent@vinavx3 scimark2TMP]$ gcc -march=native -Wall -Ofast *.c -lm -fno-split-paths ; ./a.out | grep LU LU Mflops: 6136.33 (M=100, N=100) [innocent@vinavx3 scimark2TMP]$ gcc -march=native -Wall -Ofast *.c -lm -flto ; ./a.out | grep LU LU Mflops: 5809.93 (M=100, N=100) [innocent@vinavx3 scimark2TMP]$ gcc -march=native -Wall -Ofast *.c -lm -flto -fno-split-paths ; ./a.out | grep LU LU Mflops: 5630.24 (M=100, N=100) [innocent@vinavx3 scimark2TMP]$ c++ -march=native -Wall -Ofast *.c -lm ; ./a.out | grep LU LU Mflops: 6001.47 (M=100, N=100) [innocent@vinavx3 scimark2TMP]$ c++ -march=native -Wall -Ofast *.c -lm -fno-split-paths ; ./a.out | grep LU LU Mflops: 5920.14 (M=100, N=100) [innocent@vinavx3 scimark2TMP]$ c++ -march=native -Wall -Ofast *.c -lm -flto; ./a.out | grep LU LU Mflops: 5434.16 (M=100, N=100) [innocent@vinavx3 scimark2TMP]$ c++ -march=native -Wall -Ofast *.c -lm -flto -fno-split-paths ; ./a.out | grep LU LU Mflops: 5434.16 (M=100, N=100)
