[llvm] [MemProf] Extend MemProfUse pass to make use of data access profiles to partition data (PR #151238)

[Mingming Liu via llvm-commits]

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+; RUN: rm -rf %t && split-file %s %t && cd %t
+
+;; Read a text profile and merge it into indexed profile.
+; RUN: llvm-profdata merge --memprof-version=4 memprof.yaml -o memprof.profdata
+
+;; Run optimizer pass on the IR, and check the section prefix.
+; RUN: opt -passes='memprof-use<profile-filename=memprof.profdata>' -annotate-static-data-prefix \
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mingmingl-llvm wrote:

Added a RUN line below with `--implicit-check-not="section_prefix"`, also updated the 'CHECK' (default prefix) to 'PREFIX' (a custom one). This way, it's very explicit that the added RUN line won't match 'PREFIX' lines.

https://github.com/llvm/llvm-project/pull/151238