Controls the use of common subexpression optimization.

This pragma is compatible with the following platform targets:

68K

PowerPC

NEC V800

Intel x86

MIPS

Embedded 68K

When this option is on, the compiler replaces similar redundant expressions with a single expression. For example, if two statements in a function both use the expression

the compiler generates object code that computes the expression only once and applies the resulting value to both statements.

The pragma doesn't correspond to an option in any settings panel. To check whether this option is on, use __option (opt_common_subs), described in "Checking Options."