Intel® VTune™ Amplifier XE and Intel® VTune™ Amplifier for Systems Help
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.
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.