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Sooooo many of these had incorrect or strange main module includes. I have manually inspected all of these, and fixed the main module include to be the nearest plausible thing I could find. If you own or care about any of these source files, I encourage you to take some time and check that these edits were sensible. I can't have broken anything (I strictly added headers, and reordered them, never removed), but they may not be the headers you'd really like to identify as containing the API being implemented. Many forward declarations and missing includes were added to a header files to allow them to parse cleanly when included first. The main module rule does in fact have its merits. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169131 91177308-0d34-0410-b5e6-96231b3b80d8
156 lines
4.7 KiB
C++
156 lines
4.7 KiB
C++
//===- ProfileInfoLoad.cpp - Load profile information from disk -----------===//
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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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// The ProfileInfoLoader class is used to load and represent profiling
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// information read in from the dump file.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/ProfileInfoLoader.h"
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#include "llvm/Analysis/ProfileInfoTypes.h"
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#include "llvm/InstrTypes.h"
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#include "llvm/Module.h"
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#include "llvm/Support/raw_ostream.h"
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#include <cstdio>
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#include <cstdlib>
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using namespace llvm;
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// ByteSwap - Byteswap 'Var' if 'Really' is true.
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//
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static inline unsigned ByteSwap(unsigned Var, bool Really) {
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if (!Really) return Var;
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return ((Var & (255U<< 0U)) << 24U) |
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((Var & (255U<< 8U)) << 8U) |
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((Var & (255U<<16U)) >> 8U) |
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((Var & (255U<<24U)) >> 24U);
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}
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static unsigned AddCounts(unsigned A, unsigned B) {
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// If either value is undefined, use the other.
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if (A == ProfileInfoLoader::Uncounted) return B;
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if (B == ProfileInfoLoader::Uncounted) return A;
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return A + B;
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}
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static void ReadProfilingBlock(const char *ToolName, FILE *F,
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bool ShouldByteSwap,
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std::vector<unsigned> &Data) {
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// Read the number of entries...
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unsigned NumEntries;
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if (fread(&NumEntries, sizeof(unsigned), 1, F) != 1) {
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errs() << ToolName << ": data packet truncated!\n";
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perror(0);
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exit(1);
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}
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NumEntries = ByteSwap(NumEntries, ShouldByteSwap);
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// Read the counts...
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std::vector<unsigned> TempSpace(NumEntries);
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// Read in the block of data...
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if (fread(&TempSpace[0], sizeof(unsigned)*NumEntries, 1, F) != 1) {
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errs() << ToolName << ": data packet truncated!\n";
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perror(0);
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exit(1);
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}
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// Make sure we have enough space... The space is initialised to -1 to
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// facitiltate the loading of missing values for OptimalEdgeProfiling.
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if (Data.size() < NumEntries)
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Data.resize(NumEntries, ProfileInfoLoader::Uncounted);
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// Accumulate the data we just read into the data.
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if (!ShouldByteSwap) {
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for (unsigned i = 0; i != NumEntries; ++i) {
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Data[i] = AddCounts(TempSpace[i], Data[i]);
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}
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} else {
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for (unsigned i = 0; i != NumEntries; ++i) {
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Data[i] = AddCounts(ByteSwap(TempSpace[i], true), Data[i]);
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}
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}
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}
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const unsigned ProfileInfoLoader::Uncounted = ~0U;
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// ProfileInfoLoader ctor - Read the specified profiling data file, exiting the
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// program if the file is invalid or broken.
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//
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ProfileInfoLoader::ProfileInfoLoader(const char *ToolName,
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const std::string &Filename)
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: Filename(Filename) {
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FILE *F = fopen(Filename.c_str(), "rb");
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if (F == 0) {
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errs() << ToolName << ": Error opening '" << Filename << "': ";
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perror(0);
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exit(1);
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}
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// Keep reading packets until we run out of them.
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unsigned PacketType;
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while (fread(&PacketType, sizeof(unsigned), 1, F) == 1) {
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// If the low eight bits of the packet are zero, we must be dealing with an
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// endianness mismatch. Byteswap all words read from the profiling
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// information.
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bool ShouldByteSwap = (char)PacketType == 0;
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PacketType = ByteSwap(PacketType, ShouldByteSwap);
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switch (PacketType) {
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case ArgumentInfo: {
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unsigned ArgLength;
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if (fread(&ArgLength, sizeof(unsigned), 1, F) != 1) {
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errs() << ToolName << ": arguments packet truncated!\n";
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perror(0);
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exit(1);
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}
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ArgLength = ByteSwap(ArgLength, ShouldByteSwap);
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// Read in the arguments...
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std::vector<char> Chars(ArgLength+4);
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if (ArgLength)
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if (fread(&Chars[0], (ArgLength+3) & ~3, 1, F) != 1) {
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errs() << ToolName << ": arguments packet truncated!\n";
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perror(0);
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exit(1);
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}
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CommandLines.push_back(std::string(&Chars[0], &Chars[ArgLength]));
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break;
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}
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case FunctionInfo:
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ReadProfilingBlock(ToolName, F, ShouldByteSwap, FunctionCounts);
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break;
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case BlockInfo:
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ReadProfilingBlock(ToolName, F, ShouldByteSwap, BlockCounts);
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break;
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case EdgeInfo:
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ReadProfilingBlock(ToolName, F, ShouldByteSwap, EdgeCounts);
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break;
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case OptEdgeInfo:
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ReadProfilingBlock(ToolName, F, ShouldByteSwap, OptimalEdgeCounts);
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break;
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case BBTraceInfo:
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ReadProfilingBlock(ToolName, F, ShouldByteSwap, BBTrace);
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break;
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default:
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errs() << ToolName << ": Unknown packet type #" << PacketType << "!\n";
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exit(1);
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}
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}
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fclose(F);
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}
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