30b93db547
Adds compile time flag -mllvm -memprof-histogram and runtime flag histogram=true|false to turn Histogram collection on and off. The -memprof-histogram flag relies on -memprof-use-callbacks=true to work. Updates shadow mapping logic in histogram mode from having one 8 byte counter for 64 bytes, to 1 byte for 8 bytes, capped at 255. Only supports this granularity as of now. Updates the RawMemprofReader and serializing MemoryInfoBlocks to binary format, including changing to a new version of the raw binary format from version 3 to version 4. Updates creating MemoryInfoBlocks with and without Histograms. When two MemoryInfoBlocks are merged, AccessCounts are summed up and the shorter Histogram is removed. Adds a memprof_histogram test case. Initial commit for adding AccessCountHistograms up until RawProfile for memprof
103 lines
3.7 KiB
Plaintext
103 lines
3.7 KiB
Plaintext
REQUIRES: x86_64-linux
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Since the profile contains virtual addresses for the callstack,
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we do not expect the raw binary profile to be deterministic. The
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summary should be deterministic apart from changes to the shared
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libraries linked in which could change the number of segments
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recorded.
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To update the inputs used below run Inputs/update_memprof_inputs.sh /path/to/updated/clang
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RUN: llvm-profdata show --memory %p/Inputs/pic.memprofraw --profiled-binary %p/Inputs/pic.memprofexe -o - 2>&1 | FileCheck %s
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CHECK: MemprofProfile:
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CHECK-NEXT: Summary:
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CHECK-NEXT: Version: 4
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CHECK-NEXT: NumSegments: {{[0-9]+}}
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CHECK-NEXT: NumMibInfo: 2
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CHECK-NEXT: NumAllocFunctions: 1
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CHECK-NEXT: NumStackOffsets: 2
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CHECK-NEXT: Segments:
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CHECK-NEXT: -
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CHECK-NEXT: BuildId: {{[[:xdigit:]]+}}
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CHECK-NEXT: Start: 0x{{[[:xdigit:]]+}}
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CHECK-NEXT: End: 0x{{[[:xdigit:]]+}}
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CHECK-NEXT: Offset: 0x{{[[:xdigit:]]+}}
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CHECK-NEXT: -
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CHECK: Records:
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CHECK-NEXT: -
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CHECK-NEXT: FunctionGUID: {{[0-9]+}}
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CHECK-NEXT: AllocSites:
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CHECK-NEXT: -
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CHECK-NEXT: Callstack:
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CHECK-NEXT: -
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CHECK-NEXT: Function: {{[0-9]+}}
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CHECK-NEXT: SymbolName: main
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CHECK-NEXT: LineOffset: 1
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CHECK-NEXT: Column: 21
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CHECK-NEXT: Inline: 0
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CHECK-NEXT: MemInfoBlock:
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CHECK-NEXT: AllocCount: 1
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CHECK-NEXT: TotalAccessCount: 2
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CHECK-NEXT: MinAccessCount: 2
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CHECK-NEXT: MaxAccessCount: 2
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CHECK-NEXT: TotalSize: 10
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CHECK-NEXT: MinSize: 10
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CHECK-NEXT: MaxSize: 10
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CHECK-NEXT: AllocTimestamp: {{[0-9]+}}
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CHECK-NEXT: DeallocTimestamp: {{[0-9]+}}
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CHECK-NEXT: TotalLifetime: 0
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CHECK-NEXT: MinLifetime: 0
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CHECK-NEXT: MaxLifetime: 0
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CHECK-NEXT: AllocCpuId: {{[0-9]+}}
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CHECK-NEXT: DeallocCpuId: {{[0-9]+}}
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CHECK-NEXT: NumMigratedCpu: 0
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CHECK-NEXT: NumLifetimeOverlaps: 0
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CHECK-NEXT: NumSameAllocCpu: 0
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CHECK-NEXT: NumSameDeallocCpu: 0
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CHECK-NEXT: DataTypeId: {{[0-9]+}}
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CHECK-NEXT: TotalAccessDensity: 20
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CHECK-NEXT: MinAccessDensity: 20
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CHECK-NEXT: MaxAccessDensity: 20
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CHECK-NEXT: TotalLifetimeAccessDensity: 20000
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CHECK-NEXT: MinLifetimeAccessDensity: 20000
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CHECK-NEXT: MaxLifetimeAccessDensity: 20000
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CHECK-NEXT: AccessHistogramSize: 0
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CHECK-NEXT: AccessHistogram: 0
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CHECK-NEXT: -
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CHECK-NEXT: Callstack:
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CHECK-NEXT: -
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CHECK-NEXT: Function: {{[0-9]+}}
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CHECK-NEXT: SymbolName: main
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CHECK-NEXT: LineOffset: 4
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CHECK-NEXT: Column: 15
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CHECK-NEXT: Inline: 0
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CHECK-NEXT: MemInfoBlock:
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CHECK-NEXT: AllocCount: 1
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CHECK-NEXT: TotalAccessCount: 2
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CHECK-NEXT: MinAccessCount: 2
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CHECK-NEXT: MaxAccessCount: 2
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CHECK-NEXT: TotalSize: 10
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CHECK-NEXT: MinSize: 10
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CHECK-NEXT: MaxSize: 10
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CHECK-NEXT: AllocTimestamp: {{[0-9]+}}
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CHECK-NEXT: DeallocTimestamp: {{[0-9]+}}
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CHECK-NEXT: TotalLifetime: 0
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CHECK-NEXT: MinLifetime: 0
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CHECK-NEXT: MaxLifetime: 0
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CHECK-NEXT: AllocCpuId: {{[0-9]+}}
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CHECK-NEXT: DeallocCpuId: {{[0-9]+}}
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CHECK-NEXT: NumMigratedCpu: 0
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CHECK-NEXT: NumLifetimeOverlaps: 0
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CHECK-NEXT: NumSameAllocCpu: 0
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CHECK-NEXT: NumSameDeallocCpu: 0
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CHECK-NEXT: DataTypeId: {{[0-9]+}}
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CHECK-NEXT: TotalAccessDensity: 20
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CHECK-NEXT: MinAccessDensity: 20
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CHECK-NEXT: MaxAccessDensity: 20
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CHECK-NEXT: TotalLifetimeAccessDensity: 20000
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CHECK-NEXT: MinLifetimeAccessDensity: 20000
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CHECK-NEXT: MaxLifetimeAccessDensity: 20000
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CHECK-NEXT: AccessHistogramSize: 0
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CHECK-NEXT: AccessHistogram: 0 |