mirror of
https://github.com/c64scene-ar/llvm-6502.git
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into their new header subdirectory: include/llvm/IR. This matches the directory structure of lib, and begins to correct a long standing point of file layout clutter in LLVM. There are still more header files to move here, but I wanted to handle them in separate commits to make tracking what files make sense at each layer easier. The only really questionable files here are the target intrinsic tablegen files. But that's a battle I'd rather not fight today. I've updated both CMake and Makefile build systems (I think, and my tests think, but I may have missed something). I've also re-sorted the includes throughout the project. I'll be committing updates to Clang, DragonEgg, and Polly momentarily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171366 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/IR/InstrTypes.h"
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#include "llvm/IR/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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