Slow LEA Stalls
Metric Description
Some instructions have increased latency in Intel
microarchitecture code name Sandy Bridge. Some LEA instructions, most notably
three-operand LEA instructions, have increased latency and reduced dispatch
port choices compared to other LEAs. This metric estimates the performance
penalty of such slow LEAs.
Possible Issues
A significant proportion of cycles were spent handling slow LEA
operations. Use the source view to discover the responsible instructions and
try to avoid their use.