Loop: Exit: addi x9, X9, 1 sub X14, X13, X9 addi X10, X10, 4 sub X11, X10, X9 CBNZ X14 Loop Which would be the most appropriate branchĺpredictor? O predict not taken Opredict taken O predict most often taken // increment loop index: k = k + 1 // test loop index: if limit > k then X14!=0 // compute loop body: x = x + 4 // compute loop body: y = x - k // loop-body is done; goto loopback point predict least often taken

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Loop:
Exit:
addi X9, X9, 1
sub X14, X13, X9
addi X10, X10, 4
sub X11, X10, X9
CBNZ X14 Loop
O predict not taken
O predict taken
Which would be the most appropriate branch predictor?
O predict most often taken
O predict least often taken
// increment loop index: k = k + 1
// test loop index: if limit
k then X14!=0
// compute loop body: x = x + 4
// compute loop body: y = x - k
// loop-body is done; goto loopback point
Transcribed Image Text:Loop: Exit: addi X9, X9, 1 sub X14, X13, X9 addi X10, X10, 4 sub X11, X10, X9 CBNZ X14 Loop O predict not taken O predict taken Which would be the most appropriate branch predictor? O predict most often taken O predict least often taken // increment loop index: k = k + 1 // test loop index: if limit k then X14!=0 // compute loop body: x = x + 4 // compute loop body: y = x - k // loop-body is done; goto loopback point
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