llvm-project

79c62efe - [Metadata][profcheck] Handle identical MDNodes in getMergedProfMetadata (#175701)

[Metadata][profcheck] Handle identical MDNodes in getMergedProfMetadata (#175701) This fixes a bug where !prof metadata was dropped from SelectInsts when GVN simplified/merged them. Guarded by -profcheck-disable-metadata-fixes. Exposed by the tests in Transforms/SampleProfile.