Category "cpu-architecture"

Understanding bubble vs stall vs repeated decode/fetch

I'm really confused on the difference between bubbles, stalls, and repeated decoding/fetching. My text is the Patterson text, 3rd edition. Example 1: add $3,

Micro fusion and addressing modes

I have found something unexpected (to me) using the Intel® Architecture Code Analyzer (IACA). The following instruction using [base+index] addressing add