[1] Released in 2019, ARM claimed an increase of 23% and 35% in integer and floating point performance and 15% higher memory bandwidth over its predecessor, the A76.
The Cortex-A77 is a 4-wide decode out-of-order superscalar design with a new 1.5K macro-OP (MOPs) cache.
In total, there are three simple ALUs that perform arithmetic and logical data processing operations and a fourth port which has support for complex arithmetic (e.g. MAC, DIV).
Those pipelines can also execute the cryptographic instructions if the extension is supported (not offered by default and requires an additional license from Arm).
Cortex-A77 added a second AES unit in order to improve the throughput of cryptography operations.
[1] The Cortex-A77 is available as SIP core to licensees, and its design makes it suitable for integration with other SIP cores (e.g. GPU, display controller, DSP, image processor, etc.)
[15][16] Both its predecessor (Cortex-A76) and its successor (Cortex-A78) had automotive variants with Split-Lock capability, the Cortex-A76AE and Cortex-A78AE, but the Cortex-A77 did not, thus not finding its way into security critical applications.