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Diffstat (limited to 'contrib/llvm/lib/Analysis/ProfileDataLoader.cpp')
-rw-r--r-- | contrib/llvm/lib/Analysis/ProfileDataLoader.cpp | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/contrib/llvm/lib/Analysis/ProfileDataLoader.cpp b/contrib/llvm/lib/Analysis/ProfileDataLoader.cpp deleted file mode 100644 index d7f444b..0000000 --- a/contrib/llvm/lib/Analysis/ProfileDataLoader.cpp +++ /dev/null @@ -1,155 +0,0 @@ -//===- ProfileDataLoader.cpp - Load profile information from disk ---------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// The ProfileDataLoader class is used to load raw profiling data from the dump -// file. -// -//===----------------------------------------------------------------------===// - -#include "llvm/Analysis/ProfileDataLoader.h" -#include "llvm/ADT/ArrayRef.h" -#include "llvm/ADT/OwningPtr.h" -#include "llvm/Analysis/ProfileDataTypes.h" -#include "llvm/IR/InstrTypes.h" -#include "llvm/IR/Module.h" -#include "llvm/Support/raw_ostream.h" -#include "llvm/Support/system_error.h" -#include <cstdio> -#include <cstdlib> -using namespace llvm; - -raw_ostream &llvm::operator<<(raw_ostream &O, std::pair<const BasicBlock *, - const BasicBlock *> E) { - O << "("; - - if (E.first) - O << E.first->getName(); - else - O << "0"; - - O << ","; - - if (E.second) - O << E.second->getName(); - else - O << "0"; - - return O << ")"; -} - -/// AddCounts - Add 'A' and 'B', accounting for the fact that the value of one -/// (or both) may not be defined. -static unsigned AddCounts(unsigned A, unsigned B) { - // If either value is undefined, use the other. - // Undefined + undefined = undefined. - if (A == ProfileDataLoader::Uncounted) return B; - if (B == ProfileDataLoader::Uncounted) return A; - - return A + B; -} - -/// ReadProfilingData - Load 'NumEntries' items of type 'T' from file 'F' -template <typename T> -static void ReadProfilingData(const char *ToolName, FILE *F, - T *Data, size_t NumEntries) { - // Read in the block of data... - if (fread(Data, sizeof(T), NumEntries, F) != NumEntries) - report_fatal_error(Twine(ToolName) + ": Profiling data truncated"); -} - -/// ReadProfilingNumEntries - Read how many entries are in this profiling data -/// packet. -static unsigned ReadProfilingNumEntries(const char *ToolName, FILE *F, - bool ShouldByteSwap) { - unsigned Entry; - ReadProfilingData<unsigned>(ToolName, F, &Entry, 1); - return ShouldByteSwap ? ByteSwap_32(Entry) : Entry; -} - -/// ReadProfilingBlock - Read the number of entries in the next profiling data -/// packet and then accumulate the entries into 'Data'. -static void ReadProfilingBlock(const char *ToolName, FILE *F, - bool ShouldByteSwap, - SmallVector<unsigned, 32> &Data) { - // Read the number of entries... - unsigned NumEntries = ReadProfilingNumEntries(ToolName, F, ShouldByteSwap); - - // Read in the data. - SmallVector<unsigned, 8> TempSpace(NumEntries); - ReadProfilingData<unsigned>(ToolName, F, TempSpace.data(), NumEntries); - - // Make sure we have enough space ... - if (Data.size() < NumEntries) - Data.resize(NumEntries, ProfileDataLoader::Uncounted); - - // Accumulate the data we just read into the existing data. - for (unsigned i = 0; i < NumEntries; ++i) { - unsigned Entry = ShouldByteSwap ? ByteSwap_32(TempSpace[i]) : TempSpace[i]; - Data[i] = AddCounts(Entry, Data[i]); - } -} - -/// ReadProfilingArgBlock - Read the command line arguments that the progam was -/// run with when the current profiling data packet(s) were generated. -static void ReadProfilingArgBlock(const char *ToolName, FILE *F, - bool ShouldByteSwap, - SmallVector<std::string, 1> &CommandLines) { - // Read the number of bytes ... - unsigned ArgLength = ReadProfilingNumEntries(ToolName, F, ShouldByteSwap); - - // Read in the arguments (if there are any to read). Round up the length to - // the nearest 4-byte multiple. - SmallVector<char, 8> Args(ArgLength+4); - if (ArgLength) - ReadProfilingData<char>(ToolName, F, Args.data(), (ArgLength+3) & ~3); - - // Store the arguments. - CommandLines.push_back(std::string(&Args[0], &Args[ArgLength])); -} - -const unsigned ProfileDataLoader::Uncounted = ~0U; - -/// ProfileDataLoader ctor - Read the specified profiling data file, reporting -/// a fatal error if the file is invalid or broken. -ProfileDataLoader::ProfileDataLoader(const char *ToolName, - const std::string &Filename) - : Filename(Filename) { - FILE *F = fopen(Filename.c_str(), "rb"); - if (F == 0) - report_fatal_error(Twine(ToolName) + ": Error opening '" + - Filename + "': "); - - // Keep reading packets until we run out of them. - unsigned PacketType; - while (fread(&PacketType, sizeof(unsigned), 1, F) == 1) { - // If the low eight bits of the packet are zero, we must be dealing with an - // endianness mismatch. Byteswap all words read from the profiling - // information. This can happen when the compiler host and target have - // different endianness. - bool ShouldByteSwap = (char)PacketType == 0; - PacketType = ShouldByteSwap ? ByteSwap_32(PacketType) : PacketType; - - switch (PacketType) { - case ArgumentInfo: - ReadProfilingArgBlock(ToolName, F, ShouldByteSwap, CommandLines); - break; - - case EdgeInfo: - ReadProfilingBlock(ToolName, F, ShouldByteSwap, EdgeCounts); - break; - - default: - report_fatal_error(std::string(ToolName) - + ": Unknown profiling packet type"); - break; - } - } - - fclose(F); -} |