5.7.7.10 Cse-follow-jumps Option

The -fcse-follow-jumps option instructs the common subexpression elimination (CSE) optimizations to scan through jump instructions when the target of the jump is not reached by any other path. For example, when CSE encounters an if() statement with an else clause, CSE follows the jump when the condition tested is false.

This option is automatically enabled at optimization levels -O2, -O3, and -Os.

The -fno-cse-follow-jumps form of this option does not perform this scan.