[llvm-dev] Tuning option issue in the clang-8 mtune=cortex-a57.cortex-a53'

VenkataKrishna Pari via llvm-dev llvm-dev at lists.llvm.org
Wed Feb 20 12:18:59 PST 2019

Hi All,

I am compiling my soure code in ARM 64 bit compiler. I am seeing the below
error when compiling code. I gone through the release document of gcc 4.9.
it show it wiill support Initial big.LITTLE tuning support for the
combination of Cortex-A57 and Cortex-A53 was added through the -mcpu=


Compiler :aarch64-cros-linux-gnu-clang  -O2 -pipe  -march=armv8-a+crc

GCC:./aarch64-cros-linux-gnu-gcc --version
4.9.x 20150123

clang-8: error: the clang compiler does not support

Is it support -mtune=cortex-a57.cortex-a53 clag-8. Could you help me how
resolve this issue.

Thanks and Regards,
Venkat Pari


Thanks and Regards
venkat pari
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