Eager Execution
Eager execution is a form of speculative execution where both sides of the conditional branch are executed, however the results are committed only if the predicate is true. With unlimited resources, eager execution (also known as oracle execution) would in theory provide the same performance as perfect branch prediction. With limited resources eager execution should be employed carefully since the number of resources needed grows exponentially with each level of branches executed eagerly.
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—Thomas Hardy (1840–1928)