David Spickett 18e70a4d50 [llvm][TargetParser] Return StringMap from getHostCPUFeatures (#97824) ...

Previously this took a reference to a map and returned a bool to say
whether it succeeded. We can return a StringMap instead, as all callers
but 1 simply iterated the map if the bool was true, and passed in empty
maps as the starting point.

lldb's lit-cpuid did specifically check whether the call failed, but due
to the way the x86 routines work this works out the same as checking if
the returned map is empty.

2024-07-11 10:32:43 +01:00

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