Diff for "CheatSheet/Gcc"

Differences between revisions 2 and 3

Using profile-guided optimization (PGO)

gcc -O3 -march=native -pg -fprofile-generate ...
# Run a benchmark or program's typical load
gcc -O3 -march=native -fprofile-use ...

# E.g. check for the version of OpenMP supported
echo | cpp -fopenmp -dM | grep -i open
#define _OPENMP 200805

-  ⇤ ← Revision 2 as of 2011-03-04 01:06:34 → 
  Size: 247
  Editor: SamatJain
  Comment: Add to CheatSheet category
+   ← Revision 3 as of 2016-08-26 19:15:10 → ⇥
  Size: 446
  Editor: SamatJain
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 8:
+== Check compiler preprocessor defines ==

{{{#!highlight sh numbers=off
# E.g. check for the version of OpenMP supported
echo | cpp -fopenmp -dM | grep -i open
#define _OPENMP 200805
}}}