#pragma GCC target (
string, ...)
target(
string)
attribute for each string argument. The parentheses around
the strings in the pragma are optional. See Function Attributes,
for more information about the target
attribute and the attribute
syntax.
The #pragma GCC target
pragma is presently implemented for
x86, ARM, AArch64, PowerPC, S/390, and Nios II targets only.
#pragma GCC optimize (
string, ...)
optimize(
string)
attribute for each string argument. The parentheses around
the strings in the pragma are optional. See Function Attributes,
for more information about the optimize
attribute and the attribute
syntax.
#pragma GCC push_options
#pragma GCC pop_options
#pragma GCC reset_options
#pragma GCC target
and
#pragma GCC optimize
to use the default switches as specified
on the command line.