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Add show and merge tools for sample PGO profiles.

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Summary:
This patch extends the 'show' and 'merge' commands in llvm-profdata to handle
sample PGO formats. Using the 'merge' command it is now possible to convert
one sample PGO format to another.

The only format that is currently not working is 'gcc'. I still need to
implement support for it in lib/ProfileData.

The changes in the sample profile support classes are needed for the
merge operation.

Reviewers: bogner

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D6065

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221032 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Diego Novillo
2014-11-01 00:56:55 +00:00
parent e542d91ee5
commit 9657de5f22
9 changed files with 323 additions and 123 deletions
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include/llvm/ProfileData/SampleProfWriter.h
+34 -6
View File
@@ -24,6 +24,8 @@ namespace llvm {
namespace sampleprof {
enum SampleProfileFormat { SPF_None = 0, SPF_Text, SPF_Binary, SPF_GCC };
/// \brief Sample-based profile writer. Base class.
class SampleProfileWriter {
public:
@@ -32,21 +34,47 @@ public:
: OS(Filename, EC, Flags) {}
virtual ~SampleProfileWriter() {}
/// \brief Write sample profiles in \p S for function \p F.
/// \brief Write sample profiles in \p S for function \p FName.
///
/// \returns true if the file was updated successfully. False, otherwise.
virtual bool write(const Function &F, const FunctionSamples &S) = 0;
virtual bool write(StringRef FName, const FunctionSamples &S) = 0;
/// \brief Write sample profiles in \p S for function \p F.
bool write(const Function &F, const FunctionSamples &S) {
return write(F.getName(), S);
}
/// \brief Write all the sample profiles for all the functions in \p M.
///
/// \returns true if the file was updated successfully. False, otherwise.
bool write(const Module &M, StringMap<FunctionSamples> &P) {
for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I)
if (!write((*I), P[I->getName()]))
for (const auto &F : M) {
StringRef Name = F.getName();
if (!write(Name, P[Name]))
return false;
}
return true;
}
/// \brief Write all the sample profiles in the given map of samples.
///
/// \returns true if the file was updated successfully. False, otherwise.
bool write(StringMap<FunctionSamples> &ProfileMap) {
for (auto &I : ProfileMap) {
StringRef FName = I.first();
FunctionSamples &Profile = I.second;
if (!write(FName, Profile))
return false;
}
return true;
}
/// \brief Profile writer factory. Create a new writer based on the value of
/// \p Format.
static std::error_code create(StringRef Filename,
std::unique_ptr<SampleProfileWriter> &Result,
SampleProfileFormat Format);
protected:
/// \brief Output stream where to emit the profile to.
raw_fd_ostream OS;
@@ -58,7 +86,7 @@ public:
SampleProfileWriterText(StringRef F, std::error_code &EC)
: SampleProfileWriter(F, EC, sys::fs::F_Text) {}
bool write(const Function &F, const FunctionSamples &S) override;
bool write(StringRef FName, const FunctionSamples &S) override;
bool write(const Module &M, StringMap<FunctionSamples> &P) {
return SampleProfileWriter::write(M, P);
}
@@ -69,7 +97,7 @@ class SampleProfileWriterBinary : public SampleProfileWriter {
public:
SampleProfileWriterBinary(StringRef F, std::error_code &EC);
bool write(const Function &F, const FunctionSamples &S) override;
bool write(StringRef F, const FunctionSamples &S) override;
bool write(const Module &M, StringMap<FunctionSamples> &P) {
return SampleProfileWriter::write(M, P);
}