================
@@ -2420,11 +2420,11 @@ command line.
 
 The current set of options correspond to the existing "subtarget features" for
 the target with or without a "-mno-" in front corresponding to the absence
-of the feature, as well as ``arch="CPU"`` which will change the default "CPU"
-for the function.
+of the feature, as well as ``arch="CPU"`` and ``cpu="CPU"`` which will change
+the default "CPU" for the function.
----------------
AaronBallman wrote:

These docs confuse me a bit because I'm left wondering what the difference is 
between using `-arch="whatever"` and `-cpu="whatever"`; it sounds like they 
both do the same thing. If they indeed are identical, we should document that 
more clearly (but it certainly begs the question of "why do we have both?").

https://github.com/llvm/llvm-project/pull/68678
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