Revert "[PGO] remove unintended debug trace. NFC" This reverts commit r295469, r295364, as they are unstable on ARM/AArch64. llvm-svn: 295664
Revert "[PGO] remove unintended debug trace. NFC" This reverts commit r295469, r295364, as they are unstable on ARM/AArch64. llvm-svn: 295664