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ProfileData: Introduce InstrProfWriter using the naive text format
This isn't a format we'll want to write out in practice, but moving it to the writer library simplifies llvm-profdata and isolates it from further changes to the format. This also allows us to update the tests to not rely on the text output format. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204489 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Justin Bogner
parent
469198f995
commit
496d7f66a0
@ -31,7 +31,10 @@ struct instrprof_error {
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too_large,
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truncated,
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malformed,
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unknown_function
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unknown_function,
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hash_mismatch,
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count_mismatch,
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counter_overflow
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};
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ErrorType V;
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49
include/llvm/ProfileData/InstrProfWriter.h
Normal file
49
include/llvm/ProfileData/InstrProfWriter.h
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@ -0,0 +1,49 @@
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//=-- InstrProfWriter.h - Instrumented profiling writer -----------*- C++ -*-=//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains support for writing profiling data for instrumentation
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// based PGO and coverage.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_PROFILEDATA_INSTRPROF_WRITER_H__
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#define LLVM_PROFILEDATA_INSTRPROF_WRITER_H__
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/ProfileData/InstrProf.h"
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#include "llvm/Support/DataTypes.h"
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#include "llvm/Support/raw_ostream.h"
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#include <vector>
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namespace llvm {
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/// Writer for instrumentation based profile data.
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class InstrProfWriter {
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public:
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struct CounterData {
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uint64_t Hash;
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std::vector<uint64_t> Counts;
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};
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private:
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StringMap<CounterData> FunctionData;
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public:
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/// Add function counts for the given function. If there are already counts
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/// for this function and the hash and number of counts match, each counter is
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/// summed.
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error_code addFunctionCounts(StringRef FunctionName, uint64_t FunctionHash,
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ArrayRef<uint64_t> Counters);
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/// Ensure that all data is written to disk.
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void write(raw_ostream &OS);
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};
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} // end namespace llvm
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#endif // LLVM_PROFILE_INSTRPROF_WRITER_H__
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@ -1,6 +1,7 @@
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add_llvm_library(LLVMProfileData
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InstrProf.cpp
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InstrProfReader.cpp
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InstrProfWriter.cpp
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LINK_LIBS
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LLVMSupport
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@ -39,6 +39,12 @@ class InstrProfErrorCategoryType : public error_category {
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return "Malformed profile data";
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case instrprof_error::unknown_function:
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return "No profile data available for function";
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case instrprof_error::hash_mismatch:
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return "Function hash mismatch";
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case instrprof_error::count_mismatch:
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return "Function count mismatch";
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case instrprof_error::counter_overflow:
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return "Counter overflow";
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}
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llvm_unreachable("A value of instrprof_error has no message.");
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}
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58
lib/ProfileData/InstrProfWriter.cpp
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58
lib/ProfileData/InstrProfWriter.cpp
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@ -0,0 +1,58 @@
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//=-- InstrProfWriter.cpp - Instrumented profiling writer -------------------=//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains support for writing profiling data for clang's
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// instrumentation based PGO and coverage.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ProfileData/InstrProfWriter.h"
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#include "llvm/Support/Endian.h"
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using namespace llvm;
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error_code InstrProfWriter::addFunctionCounts(StringRef FunctionName,
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uint64_t FunctionHash,
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ArrayRef<uint64_t> Counters) {
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auto Where = FunctionData.find(FunctionName);
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if (Where == FunctionData.end()) {
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// If this is the first time we've seen this function, just add it.
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FunctionData[FunctionName] = {FunctionHash, Counters};
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return instrprof_error::success;;
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}
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auto &Data = Where->getValue();
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// We can only add to existing functions if they match, so we check the hash
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// and number of counters.
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if (Data.Hash != FunctionHash)
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return instrprof_error::hash_mismatch;
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if (Data.Counts.size() != Counters.size())
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return instrprof_error::count_mismatch;
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// These match, add up the counters.
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for (size_t I = 0, E = Counters.size(); I < E; ++I) {
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if (Data.Counts[I] + Counters[I] < Data.Counts[I])
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return instrprof_error::counter_overflow;
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Data.Counts[I] += Counters[I];
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}
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return instrprof_error::success;
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}
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void InstrProfWriter::write(raw_ostream &OS) {
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// Write out the counts for each function.
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for (const auto &I : FunctionData) {
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StringRef Name = I.getKey();
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uint64_t Hash = I.getValue().Hash;
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const std::vector<uint64_t> &Counts = I.getValue().Counts;
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OS << Name << "\n" << Hash << "\n" << Counts.size() << "\n";
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for (uint64_t Count : Counts)
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OS << Count << "\n";
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OS << "\n";
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}
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}
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@ -1,19 +1,11 @@
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RUN: not llvm-profdata merge %p/Inputs/empty.profdata %p/Inputs/foo3-1.profdata 2>&1 | FileCheck %s --check-prefix=LENGTH
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RUN: not llvm-profdata merge %p/Inputs/foo3-1.profdata %p/Inputs/foo3bar3-1.profdata 2>&1 | FileCheck %s --check-prefix=LENGTH
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RUN: not llvm-profdata merge %p/Inputs/foo4-1.profdata %p/Inputs/empty.profdata 2>&1 | FileCheck %s --check-prefix=LENGTH
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LENGTH: error: Number of instrumented functions differ
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RUN: llvm-profdata merge %p/Inputs/foo3-1.profdata %p/Inputs/foo4-1.profdata -o /dev/null 2>&1 | FileCheck %s --check-prefix=HASH
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HASH: foo4-1.profdata: foo: Function hash mismatch
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RUN: not llvm-profdata merge %p/Inputs/foo3-1.profdata %p/Inputs/bar3-1.profdata 2>&1 | FileCheck %s --check-prefix=NAME
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NAME: error: Function name mismatch, foo != bar
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RUN: not llvm-profdata merge %p/Inputs/foo3-1.profdata %p/Inputs/foo4-1.profdata 2>&1 | FileCheck %s --check-prefix=HASH
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HASH: error: Function hash mismatch for foo
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RUN: not llvm-profdata merge %p/Inputs/overflow.profdata %p/Inputs/overflow.profdata 2>&1 | FileCheck %s --check-prefix=OVERFLOW
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OVERFLOW: error: Counter overflow for overflow
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RUN: llvm-profdata merge %p/Inputs/overflow.profdata %p/Inputs/overflow.profdata -o /dev/null 2>&1 | FileCheck %s --check-prefix=OVERFLOW
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OVERFLOW: overflow.profdata: overflow: Counter overflow
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RUN: not llvm-profdata merge %p/Inputs/invalid-count-later.profdata %p/Inputs/invalid-count-later.profdata 2>&1 | FileCheck %s --check-prefix=INVALID-COUNT-LATER
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INVALID-COUNT-LATER: error: {{.*}}: Malformed profile data
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INVALID-COUNT-LATER: error: {{.*}}invalid-count-later.profdata: Malformed profile data
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RUN: not llvm-profdata merge %p/Inputs/bad-hash.profdata %p/Inputs/bad-hash.profdata 2>&1 | FileCheck %s --check-prefix=BAD-HASH
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BAD-HASH: error: {{.*}}: Malformed profile data
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BAD-HASH: error: {{.*}}bad-hash.profdata: Malformed profile data
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@ -1,33 +1,68 @@
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RUN: llvm-profdata merge %p/Inputs/foo3-1.profdata %p/Inputs/foo3-2.profdata 2>&1 | FileCheck %s --check-prefix=FOO3
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RUN: llvm-profdata merge %p/Inputs/foo3-2.profdata %p/Inputs/foo3-1.profdata 2>&1 | FileCheck %s --check-prefix=FOO3
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FOO3: {{^foo$}}
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FOO3-NEXT: {{^3$}}
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FOO3-NEXT: {{^3$}}
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FOO3-NEXT: {{^8$}}
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FOO3-NEXT: {{^7$}}
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FOO3-NEXT: {{^6$}}
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RUN: llvm-profdata merge %p/Inputs/foo3-1.profdata %p/Inputs/foo3-2.profdata 2>&1 | llvm-profdata show - -all-functions -counts | FileCheck %s --check-prefix=FOO3
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RUN: llvm-profdata merge %p/Inputs/foo3-2.profdata %p/Inputs/foo3-1.profdata 2>&1 | llvm-profdata show - -all-functions -counts | FileCheck %s --check-prefix=FOO3
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FOO3: foo:
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FOO3: Counters: 3
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FOO3: Function count: 8
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FOO3: Block counts: [7, 6]
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FOO3: Total functions: 1
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FOO3: Maximum function count: 8
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FOO3: Maximum internal block count: 7
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RUN: llvm-profdata merge %p/Inputs/foo4-1.profdata %p/Inputs/foo4-2.profdata 2>&1 | FileCheck %s --check-prefix=FOO4
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RUN: llvm-profdata merge %p/Inputs/foo4-2.profdata %p/Inputs/foo4-1.profdata 2>&1 | FileCheck %s --check-prefix=FOO4
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FOO4: {{^foo$}}
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FOO4-NEXT: {{^4$}}
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FOO4-NEXT: {{^4$}}
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FOO4-NEXT: {{^18$}}
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FOO4-NEXT: {{^28$}}
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FOO4-NEXT: {{^38$}}
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FOO4-NEXT: {{^48$}}
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RUN: llvm-profdata merge %p/Inputs/foo4-1.profdata %p/Inputs/foo4-2.profdata 2>&1 | llvm-profdata show - -all-functions -counts | FileCheck %s --check-prefix=FOO4
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RUN: llvm-profdata merge %p/Inputs/foo4-2.profdata %p/Inputs/foo4-1.profdata 2>&1 | llvm-profdata show - -all-functions -counts | FileCheck %s --check-prefix=FOO4
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FOO4: foo:
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FOO4: Counters: 4
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FOO4: Function count: 18
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FOO4: Block counts: [28, 38, 48]
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FOO4: Total functions: 1
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FOO4: Maximum function count: 18
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FOO4: Maximum internal block count: 48
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RUN: llvm-profdata merge %p/Inputs/foo3bar3-1.profdata %p/Inputs/foo3bar3-2.profdata 2>&1 | FileCheck %s --check-prefix=FOO3BAR3
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RUN: llvm-profdata merge %p/Inputs/foo3bar3-2.profdata %p/Inputs/foo3bar3-1.profdata 2>&1 | FileCheck %s --check-prefix=FOO3BAR3
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FOO3BAR3: {{^foo$}}
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FOO3BAR3-NEXT: {{^3$}}
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FOO3BAR3-NEXT: {{^3$}}
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FOO3BAR3-NEXT: {{^19$}}
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FOO3BAR3-NEXT: {{^22$}}
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FOO3BAR3-NEXT: {{^28$}}
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FOO3BAR3: {{^bar$}}
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FOO3BAR3-NEXT: {{^3$}}
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FOO3BAR3-NEXT: {{^3$}}
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FOO3BAR3-NEXT: {{^36$}}
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FOO3BAR3-NEXT: {{^42$}}
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FOO3BAR3-NEXT: {{^50$}}
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RUN: llvm-profdata merge %p/Inputs/foo3bar3-1.profdata %p/Inputs/foo3bar3-2.profdata 2>&1 | llvm-profdata show - -all-functions -counts | FileCheck %s --check-prefix=FOO3BAR3
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RUN: llvm-profdata merge %p/Inputs/foo3bar3-2.profdata %p/Inputs/foo3bar3-1.profdata 2>&1 | llvm-profdata show - -all-functions -counts | FileCheck %s --check-prefix=FOO3BAR3
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FOO3BAR3: foo:
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FOO3BAR3: Counters: 3
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FOO3BAR3: Function count: 19
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FOO3BAR3: Block counts: [22, 28]
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FOO3BAR3: bar:
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FOO3BAR3: Counters: 3
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FOO3BAR3: Function count: 36
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FOO3BAR3: Block counts: [42, 50]
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FOO3BAR3: Total functions: 2
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FOO3BAR3: Maximum function count: 36
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FOO3BAR3: Maximum internal block count: 50
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RUN: llvm-profdata merge %p/Inputs/empty.profdata %p/Inputs/foo3-1.profdata 2>&1 | llvm-profdata show - -all-functions -counts | FileCheck %s --check-prefix=FOO3EMPTY
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FOO3EMPTY: foo:
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FOO3EMPTY: Counters: 3
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FOO3EMPTY: Function count: 1
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FOO3EMPTY: Block counts: [2, 3]
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FOO3EMPTY: Total functions: 1
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FOO3EMPTY: Maximum function count: 1
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FOO3EMPTY: Maximum internal block count: 3
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RUN: llvm-profdata merge %p/Inputs/foo3-1.profdata %p/Inputs/foo3bar3-1.profdata 2>&1 | llvm-profdata show - -all-functions -counts | FileCheck %s --check-prefix=FOO3FOO3BAR3
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FOO3FOO3BAR3: foo:
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FOO3FOO3BAR3: Counters: 3
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FOO3FOO3BAR3: Function count: 3
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FOO3FOO3BAR3: Block counts: [5, 8]
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FOO3FOO3BAR3: bar:
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FOO3FOO3BAR3: Counters: 3
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FOO3FOO3BAR3: Function count: 7
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FOO3FOO3BAR3: Block counts: [11, 13]
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FOO3FOO3BAR3: Total functions: 2
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FOO3FOO3BAR3: Maximum function count: 7
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FOO3FOO3BAR3: Maximum internal block count: 13
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RUN: llvm-profdata merge %p/Inputs/foo3-1.profdata %p/Inputs/bar3-1.profdata 2>&1 | llvm-profdata show - -all-functions -counts | FileCheck %s --check-prefix=DISJOINT
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DISJOINT: foo:
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DISJOINT: Counters: 3
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DISJOINT: Function count: 1
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DISJOINT: Block counts: [2, 3]
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DISJOINT: bar:
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DISJOINT: Counters: 3
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DISJOINT: Function count: 1
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DISJOINT: Block counts: [2, 3]
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DISJOINT: Total functions: 2
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DISJOINT: Maximum function count: 1
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DISJOINT: Maximum internal block count: 3
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@ -13,6 +13,7 @@
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ProfileData/InstrProfReader.h"
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#include "llvm/ProfileData/InstrProfWriter.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/MemoryBuffer.h"
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@ -31,10 +32,8 @@ static void exitWithError(const Twine &Message, StringRef Whence = "") {
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}
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int merge_main(int argc, const char *argv[]) {
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cl::opt<std::string> Filename1(cl::Positional, cl::Required,
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cl::desc("file1"));
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cl::opt<std::string> Filename2(cl::Positional, cl::Required,
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cl::desc("file2"));
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cl::list<std::string> Inputs(cl::Positional, cl::Required, cl::OneOrMore,
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cl::desc("<filenames...>"));
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cl::opt<std::string> OutputFilename("output", cl::value_desc("output"),
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cl::init("-"),
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@ -44,12 +43,6 @@ int merge_main(int argc, const char *argv[]) {
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cl::ParseCommandLineOptions(argc, argv, "LLVM profile data merger\n");
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std::unique_ptr<InstrProfReader> Reader1, Reader2;
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if (error_code ec = InstrProfReader::create(Filename1, Reader1))
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exitWithError(ec.message(), Filename1);
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if (error_code ec = InstrProfReader::create(Filename2, Reader2))
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exitWithError(ec.message(), Filename2);
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if (OutputFilename.empty())
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OutputFilename = "-";
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@ -58,32 +51,19 @@ int merge_main(int argc, const char *argv[]) {
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if (!ErrorInfo.empty())
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exitWithError(ErrorInfo, OutputFilename);
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for (InstrProfIterator I1 = Reader1->begin(), E1 = Reader1->end(),
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I2 = Reader2->begin(), E2 = Reader2->end();
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I1 != E1 && I2 != E2; ++I1, ++I2) {
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if (I1->Name != I2->Name)
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exitWithError("Function name mismatch, " + I1->Name + " != " + I2->Name);
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if (I1->Hash != I2->Hash)
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exitWithError("Function hash mismatch for " + I1->Name);
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if (I1->Counts.size() != I2->Counts.size())
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exitWithError("Function count mismatch for " + I1->Name);
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InstrProfWriter Writer;
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for (const auto &Filename : Inputs) {
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std::unique_ptr<InstrProfReader> Reader;
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if (error_code ec = InstrProfReader::create(Filename, Reader))
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exitWithError(ec.message(), Filename);
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Output << I1->Name << "\n" << I1->Hash << "\n" << I1->Counts.size() << "\n";
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for (size_t II = 0, EE = I1->Counts.size(); II < EE; ++II) {
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uint64_t Sum = I1->Counts[II] + I2->Counts[II];
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if (Sum < I1->Counts[II])
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exitWithError("Counter overflow for " + I1->Name);
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Output << Sum << "\n";
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for (const auto &I : *Reader)
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if (error_code EC = Writer.addFunctionCounts(I.Name, I.Hash, I.Counts))
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errs() << Filename << ": " << I.Name << ": " << EC.message() << "\n";
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if (Reader->hasError())
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exitWithError(Reader->getError().message(), Filename);
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}
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Output << "\n";
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}
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if (Reader1->hasError())
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exitWithError(Reader1->getError().message(), Filename1);
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if (Reader2->hasError())
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exitWithError(Reader2->getError().message(), Filename2);
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if (!Reader1->isEOF() || !Reader2->isEOF())
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exitWithError("Number of instrumented functions differ.");
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Writer.write(Output);
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return 0;
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}
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