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| -rw-r--r-- | gcc/doc/invoke.texi | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index e0a6412..9fb0925 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -12560,6 +12560,11 @@ With @option{-O}, the compiler tries to reduce code size and execution time, without performing any optimizations that take a great deal of compilation time. +@option{-O} is the recommended optimization level for large machine-generated +code as a sensible balance between time taken to compile and memory use: +higher optimization levels perform optimizations with greater algorithmic +complexity than at @option{-O}. + @c Note that in addition to the default_options_table list in opts.cc, @c several optimization flags default to true but control optimization @c passes that are explicitly disabled at -O0. |