[PATCH] D103988: SampleFDO] place the discriminator flag variable into the used list.

[Rong Xu via Phabricator via llvm-commits]

xur added a comment.

@Fangrui: My initial version was to place it into the use list. But Hoy
suggested that I use CommonLinage.
>From llvm reference manual, it seems that linker should GC a common  symbol.
Can you read the message and add comments there?
https://reviews.llvm.org/D103988


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https://reviews.llvm.org/D103988