forked from OSchip/llvm-project
0949f96dc6
Similar to -fprofile-generate=, add -fmemory-profile= which takes a directory path. This is passed down to LLVM via a new module flag metadata. LLVM in turn provides this name to the runtime via the new __memprof_profile_filename variable. Additionally, always pass a default filename (in $cwd if a directory name is not specified vi the = form of the option). This is also consistent with the behavior of the PGO instrumentation. Since the memory profiles will generally be fairly large, it doesn't make sense to dump them to stderr. Also, importantly, the memory profiles will eventually be dumped in a compact binary format, which is another reason why it does not make sense to send these to stderr by default. Change the existing memprof tests to specify log_path=stderr when that was being relied on. Depends on D89086. Differential Revision: https://reviews.llvm.org/D89087 |
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