#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/StringSet.h"
+#include "llvm/ADT/STLExtras.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/ProfileData/InstrProfData.inc"
#include "llvm/Support/Endian.h"
/// associated with a COMDAT function.
inline StringRef getInstrProfComdatPrefix() { return "__llvm_profile_vars_"; }
-/// Return the name of a covarage mapping variable (internal linkage)
+/// Return the name of a covarage mapping variable (internal linkage)
/// for each instrumented source module. Such variables are allocated
/// in the __llvm_covmap section.
inline StringRef getCoverageMappingVarName() {
/// site: Site.
inline uint32_t getNumValueDataForSite(uint32_t ValueKind,
uint32_t Site) const;
+ /// Return the array of profiled values at \p Site.
inline std::unique_ptr<InstrProfValueData[]>
- getValueForSite(uint32_t ValueKind, uint32_t Site) const;
+ getValueForSite(uint32_t ValueKind, uint32_t Site,
+ uint64_t (*ValueMapper)(uint32_t, uint64_t) = 0) const;
+ inline void
+ getValueForSite(InstrProfValueData Dest[], uint32_t ValueKind, uint32_t Site,
+ uint64_t (*ValueMapper)(uint32_t, uint64_t) = 0) const;
/// Reserve space for NumValueSites sites.
inline void reserveSites(uint32_t ValueKind, uint32_t NumValueSites);
/// Add ValueData for ValueKind at value Site.
return getValueSitesForKind(ValueKind)[Site].ValueData.size();
}
-std::unique_ptr<InstrProfValueData[]>
-InstrProfRecord::getValueForSite(uint32_t ValueKind, uint32_t Site) const {
+std::unique_ptr<InstrProfValueData[]> InstrProfRecord::getValueForSite(
+ uint32_t ValueKind, uint32_t Site,
+ uint64_t (*ValueMapper)(uint32_t, uint64_t)) const {
uint32_t N = getNumValueDataForSite(ValueKind, Site);
if (N == 0)
return std::unique_ptr<InstrProfValueData[]>(nullptr);
- std::unique_ptr<InstrProfValueData[]> VD(new InstrProfValueData[N]);
+ auto VD = llvm::make_unique<InstrProfValueData[]>(N);
+ getValueForSite(VD.get(), ValueKind, Site, ValueMapper);
+
+ return VD;
+}
+
+void InstrProfRecord::getValueForSite(InstrProfValueData Dest[],
+ uint32_t ValueKind, uint32_t Site,
+ uint64_t (*ValueMapper)(uint32_t,
+ uint64_t)) const {
uint32_t I = 0;
for (auto V : getValueSitesForKind(ValueKind)[Site].ValueData) {
- VD[I] = V;
+ Dest[I].Value = ValueMapper ? ValueMapper(ValueKind, V.Value) : V.Value;
+ Dest[I].Count = V.Count;
I++;
}
- assert(I == N);
-
- return VD;
}
void InstrProfRecord::addValueData(uint32_t ValueKind, uint32_t Site,
/// This is the header of the data structure that defines the on-disk
/// layout of the value profile data of a particular kind for one function.
-struct ValueProfRecord {
+typedef struct ValueProfRecord {
// The kind of the value profile record.
uint32_t Kind;
// The number of value profile sites. It is guaranteed to be non-zero;
// of all elements in SiteCountArray[].
// InstrProfValueData ValueData[];
- /// Return the \c ValueProfRecord header size including the padding bytes.
- static uint32_t getHeaderSize(uint32_t NumValueSites);
- /// Return the total size of the value profile record including the
- /// header and the value data.
- static uint32_t getSize(uint32_t NumValueSites, uint32_t NumValueData);
- /// Return the total size of the value profile record including the
- /// header and the value data.
- uint32_t getSize() const { return getSize(NumValueSites, getNumValueData()); }
- /// Use this method to advance to the next \c ValueProfRecord.
- ValueProfRecord *getNext();
- /// Return the pointer to the first value profile data.
- InstrProfValueData *getValueData();
/// Return the number of value sites.
uint32_t getNumValueSites() const { return NumValueSites; }
- /// Return the number of value data.
- uint32_t getNumValueData() const;
/// Read data from this record and save it to Record.
void deserializeTo(InstrProfRecord &Record,
InstrProfRecord::ValueMapType *VMap);
/// Do byte swap for this instance. \c Old is the original order before
/// the swap, and \c New is the New byte order.
void swapBytes(support::endianness Old, support::endianness New);
-};
+} ValueProfRecord;
/// Per-function header/control data structure for value profiling
/// data in indexed format.
-struct ValueProfData {
+typedef struct ValueProfData {
// Total size in bytes including this field. It must be a multiple
// of sizeof(uint64_t).
uint32_t TotalSize;
InstrProfRecord::ValueMapType *VMap);
/// Return the first \c ValueProfRecord instance.
ValueProfRecord *getFirstValueProfRecord();
-};
+} ValueProfData;
+
+/* The closure is designed to abstact away two types of value profile data:
+ * - InstrProfRecord which is the primary data structure used to
+ * represent profile data in host tools (reader, writer, and profile-use)
+ * - value profile runtime data structure suitable to be used by C
+ * runtime library.
+ *
+ * Both sources of data need to serialize to disk/memory-buffer in common
+ * format: ValueProfData. The abstraction allows compiler-rt's raw profiler
+ * writer to share * the same code with indexed profile writer.
+ *
+ * For documentation of the member methods below, refer to corresponding methods
+ * in class InstrProfRecord.
+ */
+typedef struct ValueProfRecordClosure {
+ void *Record;
+ uint32_t (*GetNumValueKinds)(void *Record);
+ uint32_t (*GetNumValueSites)(void *Record, uint32_t VKind);
+ uint32_t (*GetNumValueData)(void *Record, uint32_t VKind);
+ uint32_t (*GetNumValueDataForSite)(void *R, uint32_t VK, uint32_t S);
+
+ /* After extracting the value profile data from the value profile record,
+ * this method is used to map the in-memory value to on-disk value. If
+ * the method is null, value will be written out untranslated.
+ */
+ uint64_t (*RemapValueData)(uint32_t, uint64_t Value);
+ void (*GetValueForSite)(InstrProfValueData *Dst, void *R, uint32_t K,
+ uint32_t S, uint64_t (*Mapper)(uint32_t, uint64_t));
+
+ ValueProfData *(*AllocateValueProfData)(size_t TotalSizeInBytes);
+} ValueProfRecordClosure;
+
+/// Return the \c ValueProfRecord header size including the padding bytes.
+inline uint32_t getValueProfRecordHeaderSize(uint32_t NumValueSites) {
+ uint32_t Size = offsetof(ValueProfRecord, SiteCountArray) +
+ sizeof(uint8_t) * NumValueSites;
+ // Round the size to multiple of 8 bytes.
+ Size = (Size + 7) & ~7;
+ return Size;
+}
+
+/// Return the total size of the value profile record including the
+/// header and the value data.
+inline uint32_t getValueProfRecordSize(uint32_t NumValueSites,
+ uint32_t NumValueData) {
+ return getValueProfRecordHeaderSize(NumValueSites) +
+ sizeof(InstrProfValueData) * NumValueData;
+}
+
+/// Return the pointer to the start of value data array.
+inline InstrProfValueData *getValueProfRecordValueData(ValueProfRecord *This) {
+ return (InstrProfValueData *)((char *)This + getValueProfRecordHeaderSize(
+ This->NumValueSites));
+}
+
+/// Return the total number of value data for \c This record.
+inline uint32_t getValueProfRecordNumValueData(ValueProfRecord *This) {
+ uint32_t NumValueData = 0;
+ uint32_t I;
+ for (I = 0; I < This->NumValueSites; I++)
+ NumValueData += This->SiteCountArray[I];
+ return NumValueData;
+}
+
+/// Use this method to advance to the next \c This \c ValueProfRecord.
+inline ValueProfRecord *getValueProfRecordNext(ValueProfRecord *This) {
+ uint32_t NumValueData = getValueProfRecordNumValueData(This);
+ return (ValueProfRecord *)((char *)This +
+ getValueProfRecordSize(This->NumValueSites,
+ NumValueData));
+}
namespace IndexedInstrProf {
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