077baefc99
We need to flatten the SampleFDO profile in profile supplementation because the InstrFDO profile does not have inlined callsite counters. Without flattening profile, FDO optimizations are not stable: we will not supplement the second generation profile when the modified functions are all inlined. This patch fixes this issue: we will flatten the profile for functions that appears in FDO profile. Note that we only need to find the hot/warm functions in SampleFDO profile, so we will not perform a full flatten. We will use a DFS traversal to compute the accumulated entry count and max bodycount. This is much cheaper than full flattening. Differential Revision: https://reviews.llvm.org/D138893
33 lines
261 B
Plaintext
33 lines
261 B
Plaintext
# IR level Instrumentation Flag
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:ir
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# Always instrument the function entry block
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:entry_first
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foo
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# Func Hash:
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1111
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# Num Counters:
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5
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# Counter Values:
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10000
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50
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2000
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40
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6000
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bar.cc:bar
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# Func Hash:
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2222
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# Num Counters:
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10
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# Counter Values:
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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