IAR Embedded Workbench for Arm 9.70.xIAR C/C++ DevelopmentThe preprocessorDescription of predefined preprocessor symbols__ARM_FEATURE_CRC32__ARM_FEATURE_CRC32In this section: DescriptionThis symbol is defined to 1 if the CRC32 instructions are supported (optional in Armv8-A/R).This symbol is defined according to ACLE (Arm C Language Extensions).