SPECULATIVE EXECUTION
\spˈɛkjʊlətˌɪv ˌɛksɪkjˈuːʃən], \spˈɛkjʊlətˌɪv ˌɛksɪkjˈuːʃən], \s_p_ˈɛ_k_j_ʊ_l_ə_t_ˌɪ_v ˌɛ_k_s_ɪ_k_j_ˈuː_ʃ_ə_n]\
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A technique allows a superscalar processor tokeep its functional units as busy as possible by executinginstructions before it is known that they will be needed.The Intel P6 uses speculative execution.Compare branch prediction, speculative evaluation.
By Denis Howe
