Controlling compiler optimizations

A non-transitory computer-readable storage medium, comprising:

• detecting a conditional branch that selects between execution of a first alternative block and a second alternative block;
• saving a first count of a number of times the first alternative block was executed and a second count of a number of times the second alternative block was executed;
• and
• if the first count is greater than a threshold and the second count equals zero, compiling the first alternative block into first alternative block object code and refraining from compiling the second alternative block;
• if the first count is not greater than the threshold, compiling the first alternative block into the first alternative block object code, compiling the second alternative block into second alternative block object code, and moving the first alternative block object code and the second alternative block object code to a processor cache;
• and
• if the second count does not equal to zero, compiling the first alternative block into the first alternative block object code, compiling the second alternative block into the second alternative block object code, and moving the first alternative block object code and the second alternative block object code to the processor cache.

A computer system comprising:

• a processor;
• and
• memory communicatively connected to the processor, wherein the memory is encoded with instructions, and wherein the instructions when executed on the processor comprise:
• detecting a conditional branch that selects between execution of a first alternative block and a second alternative block,
• determining whether a class that comprises the conditional branch is a member of a monitored set,
• if the class is the member of the monitored set, saving a first count of a number of times the first alternative block was executed and a second count of a number of times the second alternative block was executed,
• if the class is the member of the monitored set and if the first count is greater than a threshold and the second count equals zero, compiling the first alternative block into first alternative block object code and refraining from compiling the second alternative block,
• if the class is not the member of the monitored set, refraining from saving the first count and the second count, compiling the first alternative block into the first alternative block object code, compiling the second alternative block into second alternative block object code, and moving the first alternative block object code and the second alternative block object code to a processor cache;
• if the first count is not greater than the threshold, compiling the first alternative block into the first alternative block object code, compiling the second alternative block into second alternative block object code, and moving the first alternative block object code and the second alternative block object code to a processor cache;
• and
• if the second count does not equal zero, compiling the first alternative block into the first alternative block object code, compiling the second alternative block into the second alternative block object code, and moving the first alternative block object code and the second alternative block object code to the processor cache.