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c8872308b4
Profile runtime can generate an empty raw profile (when there is no function in the shared library). This empty profile is treated as a text format profile. A test format profile without the flag of "#IR" is thought to be a clang generated profile. So in llvm profile merging, we will get a bogus warning of "Merge IR generated profile with Clang generated profile." The fix here is to skip the empty profile (when the buffer size is 0) for profile merge. Reviewers: vsk, davidxl Differential Revision: http://reviews.llvm.org/D25687 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284659 91177308-0d34-0410-b5e6-96231b3b80d8