5.7.7.35 Thread-jumps Option

The -fthread-jumps option enables checks to determine if the branch destinations of comparisons are further comparisons that have been subsumed by the first. If so, the first branch is redirected to either the destination of the second branch or a point immediately following it, depending on whether the second branch condition is known to be true or false.

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

The -fno-thread-jumps form of this option does not perform these checks.