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[Profile] support directory reading in profile merging

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Differential Revision:  http://reviews.llvm.org/D22560

llvm-svn: 276185
This commit is contained in:
Xinliang David Li 2016-07-20 21:31:29 +00:00
parent 8482c3127e
commit a600368d3e
3 changed files with 65 additions and 18 deletions
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22
test/tools/llvm-profdata/input-dir.test Normal file
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@ -0,0 +1,22 @@
# Create an input file.
RUN: echo "#" > %t.input
RUN: echo "%t.dir1" >> %t.input
RUN: echo "2,%t.dir2" >> %t.input
RUN: mkdir -p %t.dir1
RUN: mkdir -p %t.dir2/subdir
RUN: echo ' ' > %t.dir1/bar
RUN: echo ' ' > %t.dir1/foo
RUN: echo ' ' > %t.dir2/bar
RUN: echo ' ' > %t.dir2/foo
RUN: echo ' ' > %t.dir2/subdir/baz
RUN: llvm-profdata merge -f %t.input -dump-input-file-list -o /dev/null | FileCheck %s
RUN: llvm-profdata merge -weighted-input=2,%t.dir2 -dump-input-file-list -o /dev/null %t.dir1 | FileCheck %s
CHECK: 1,{{.*}}.dir1/bar
CHECK-NEXT: 1,{{.*}}.dir1/foo
CHECK-NEXT: 2,{{.*}}.dir2/bar
CHECK-NEXT: 2,{{.*}}.dir2/foo
CHECK-NEXT: 2,{{.*}}.dir2/subdir/baz

18
test/tools/llvm-profdata/input-filenames.test
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@ -1,17 +1,19 @@
# Create an input file.
RUN: echo '# comment 1' > %t.input
RUN: echo ' # comment 2' >> %t.input
RUN: echo 'bar' >> %t.input
RUN: echo ' baz' >> %t.input
RUN: echo " %t.bar" >> %t.input
RUN: echo " %t.baz" >> %t.input
RUN: echo "2,%t.weighted" >> %t.input
# Create the weighted file, since these actually need to exist.
RUN: echo ' ' > %t.weighted
RUN: echo ' ' > %t.foo
RUN: echo ' ' > %t.bar
RUN: echo ' ' > %t.baz
RUN: llvm-profdata merge -f %t.input -dump-input-file-list -o /dev/null foo | FileCheck %s
RUN: llvm-profdata merge -input-files %t.input -dump-input-file-list -o /dev/null foo | FileCheck %s
RUN: llvm-profdata merge -f %t.input -dump-input-file-list -o /dev/null %t.foo | FileCheck %s
RUN: llvm-profdata merge -input-files %t.input -dump-input-file-list -o /dev/null %t.foo | FileCheck %s
CHECK: 1,foo
CHECK-NEXT: 1,bar
CHECK-NEXT: 1,baz
CHECK: 1,{{.*}}.foo
CHECK-NEXT: 1,{{.*}}.bar
CHECK-NEXT: 1,{{.*}}.baz
CHECK-NEXT: 2,{{.*}}.weighted

43
tools/llvm-profdata/llvm-profdata.cpp
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@ -109,12 +109,12 @@ static void handleMergeWriterError(Error E, StringRef WhenceFile = "",
}
struct WeightedFile {
StringRef Filename;
std::string Filename;
uint64_t Weight;
WeightedFile() {}
WeightedFile(StringRef F, uint64_t W) : Filename{F}, Weight{W} {}
WeightedFile(const std::string &F, uint64_t W) : Filename{F}, Weight{W} {}
};
typedef SmallVector<WeightedFile, 5> WeightedFileVector;
@ -305,10 +305,6 @@ static WeightedFile parseWeightedFile(const StringRef &WeightedFilename) {
if (WeightStr.getAsInteger(10, Weight) || Weight < 1)
exitWithError("Input weight must be a positive integer.");
if (!sys::fs::exists(FileName))
exitWithErrorCode(make_error_code(errc::no_such_file_or_directory),
FileName);
return WeightedFile(FileName, Weight);
}
@ -324,6 +320,33 @@ getInputFilenamesFileBuf(const StringRef &InputFilenamesFile) {
return std::move(*BufOrError);
}
static void addWeightedInput(WeightedFileVector &WNI, const WeightedFile &WF) {
StringRef Filename = WF.Filename;
uint64_t Weight = WF.Weight;
llvm::sys::fs::file_status Status;
llvm::sys::fs::status(Filename, Status);
if (!llvm::sys::fs::exists(Status))
exitWithErrorCode(make_error_code(errc::no_such_file_or_directory),
Filename);
// If it's a source file, collect it.
if (llvm::sys::fs::is_regular_file(Status)) {
WNI.emplace_back(Filename, Weight);
return;
}
if (llvm::sys::fs::is_directory(Status)) {
std::error_code EC;
for (llvm::sys::fs::recursive_directory_iterator F(Filename, EC), E;
F != E && !EC; F.increment(EC)) {
if (llvm::sys::fs::is_regular_file(F->path())) {
addWeightedInput(WNI, {F->path(), Weight});
}
}
if (EC)
exitWithErrorCode(EC, Filename);
}
}
static void parseInputFilenamesFile(MemoryBuffer *Buffer,
WeightedFileVector &WFV) {
if (!Buffer)
@ -339,9 +362,9 @@ static void parseInputFilenamesFile(MemoryBuffer *Buffer,
continue;
// If there's no comma, it's an unweighted profile.
else if (SanitizedEntry.find(',') == StringRef::npos)
WFV.emplace_back(SanitizedEntry, 1);
addWeightedInput(WFV, {SanitizedEntry, 1});
else
WFV.emplace_back(parseWeightedFile(SanitizedEntry));
addWeightedInput(WFV, parseWeightedFile(SanitizedEntry));
}
}
@ -387,9 +410,9 @@ static int merge_main(int argc, const char *argv[]) {
WeightedFileVector WeightedInputs;
for (StringRef Filename : InputFilenames)
WeightedInputs.emplace_back(Filename, 1);
addWeightedInput(WeightedInputs, {Filename, 1});
for (StringRef WeightedFilename : WeightedInputFilenames)
WeightedInputs.emplace_back(parseWeightedFile(WeightedFilename));
addWeightedInput(WeightedInputs, parseWeightedFile(WeightedFilename));
// Make sure that the file buffer stays alive for the duration of the
// weighted input vector's lifetime.