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Key difference between ARM compiler 5 and compiler 6

techguyz

Hi Experts,

What is the key difference between ARM compiler 5 and compiler 6 ?

Regards,

techguyz

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  • 0 Arm Employee Badge

    ARM Compiler 5 (and earlier versions) use the armcc compiler.  ARM Compiler 6 replaces armcc with armclang, so a new compiler.

    armclang is based on LLVM. It has different command line arguments, directives, etc... Which means a degree of porting is needed to move between compilers. There is some guidance in the docs to help with this.

    In terms of choosing between them the choice is currently reasonably straight forward. ARM Compiler 6 supports ARMv8-A, ARM Compiler 5 only supports up to ARMv7.

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  • 0 Arm Employee Badge

    ARM Compiler 5 (and earlier versions) use the armcc compiler.  ARM Compiler 6 replaces armcc with armclang, so a new compiler.

    armclang is based on LLVM. It has different command line arguments, directives, etc... Which means a degree of porting is needed to move between compilers. There is some guidance in the docs to help with this.

    In terms of choosing between them the choice is currently reasonably straight forward. ARM Compiler 6 supports ARMv8-A, ARM Compiler 5 only supports up to ARMv7.

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