068d0c0f4b
Tested call-graph matching on some of Meta's large services, it works to reuse some renamed function profiles, no negative perf or significant build speed regression observed. Turned it on by default for CSSPGO mode.
11 lines
1.1 KiB
LLVM
11 lines
1.1 KiB
LLVM
; REQUIRES: x86_64-linux
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; RUN: opt < %S/pseudo-probe-stale-profile-matching-lto.ll -passes='thinlto<O2>' -pgo-kind=pgo-sample-use-pipeline --salvage-unused-profile=false -sample-profile-file=%S/Inputs/pseudo-probe-stale-profile-matching-lto.prof -report-profile-staleness -persist-profile-staleness -S 2>%t -o %t.ll
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; RUN: FileCheck %s --input-file %t
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; RUN: FileCheck %s --input-file %t.ll -check-prefix=CHECK-MD
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; CHECK: (1/1) of functions' profile are invalid and (6822/6822) of samples are discarded due to function hash mismatch.
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; CHECK: (4/4) of callsites' profile are invalid and (5026/6822) of samples are discarded due to callsite location mismatch.
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; CHECK: (4/4) of callsites and (5026/5026) of samples are recovered by stale profile matching.
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; CHECK-MD: ![[#]] = !{!"NumStaleProfileFunc", i64 1, !"TotalProfiledFunc", i64 1, !"MismatchedFunctionSamples", i64 6822, !"TotalFunctionSamples", i64 6822, !"NumMismatchedCallsites", i64 0, !"NumRecoveredCallsites", i64 4, !"TotalProfiledCallsites", i64 4, !"MismatchedCallsiteSamples", i64 0, !"RecoveredCallsiteSamples", i64 5026}
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