[AArch64] Add native CPU detection for Microsoft Azure Cobalt 100. #77793
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This patch extends the -mcpu/mtune=native support to handle the Microsoft Azure Cobalt 100 CPU as a Neoverse N2. We expect users to use -mcpu=neoverse-n2 when targeting this CPU and all the architecture and codegen decisions to be identical. The only difference is that the Microsoft Azure Cobalt 100 has a different Implementer ID in the /proc/cpuinfo entry that needs to be detected in getHostCPUNameForARM appropriately.
davemgreen
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It is also possible to add aliases nowadays, if that would be useful.
This LGTM
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…lvm#77793) This patch extends the -mcpu/mtune=native support to handle the Microsoft Azure Cobalt 100 CPU as a Neoverse N2. We expect users to use -mcpu=neoverse-n2 when targeting this CPU and all the architecture and codegen decisions to be identical. The only difference is that the Microsoft Azure Cobalt 100 has a different Implementer ID in the /proc/cpuinfo entry that needs to be detected in getHostCPUNameForARM appropriately.
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This patch extends the -mcpu/mtune=native support to handle the Microsoft Azure Cobalt 100 CPU as a Neoverse N2. We expect users to use -mcpu=neoverse-n2 when targeting this CPU and all the architecture and codegen decisions to be identical.
The only difference is that the Microsoft Azure Cobalt 100 has a different Implementer ID in the /proc/cpuinfo entry that needs to be detected in getHostCPUNameForARM appropriately.