[clang] [compiler-rt] [llvm] [InstrFDO][TypeProf] Implement binary instrumentation and profile read/write (PR #66825)

[Snehasish Kumar via cfe-commits]

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+// REQUIRES: lld-available
+
+// RUN: rm -rf %t && split-file %s %t && cd %t
+//
+// RUN: %clangxx_pgogen -fuse-ld=lld -O2 -g -fprofile-generate=. -mllvm -enable-vtable-value-profiling test.cpp -o test
+// RUN: env LLVM_PROFILE_FILE=test.profraw ./test
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snehasish wrote:

[optional] If you prefix the test.profraw as `%t-test.profraw` then when the test fails and prints out the failed command line its easier to copy paste and run separately to debug. If you want to adopt this then all the generated files should be prefixed with `%t`.

https://github.com/llvm/llvm-project/pull/66825