#include "llvm/Analysis/ProfileInfoTypes.h"
#include "llvm/Module.h"
#include "llvm/InstrTypes.h"
-#include "llvm/Support/Streams.h"
+#include "llvm/Support/raw_ostream.h"
#include <cstdio>
#include <cstdlib>
#include <map>
//
static inline unsigned ByteSwap(unsigned Var, bool Really) {
if (!Really) return Var;
- return ((Var & (255<< 0)) << 24) |
- ((Var & (255<< 8)) << 8) |
- ((Var & (255<<16)) >> 8) |
- ((Var & (255<<24)) >> 24);
+ return ((Var & (255U<< 0U)) << 24U) |
+ ((Var & (255U<< 8U)) << 8U) |
+ ((Var & (255U<<16U)) >> 8U) |
+ ((Var & (255U<<24U)) >> 24U);
+}
+
+static unsigned AddCounts(unsigned A, unsigned B) {
+ // If either value is undefined, use the other.
+ if (A == ProfileInfoLoader::Uncounted) return B;
+ if (B == ProfileInfoLoader::Uncounted) return A;
+ return A + B;
}
static void ReadProfilingBlock(const char *ToolName, FILE *F,
// Read the number of entries...
unsigned NumEntries;
if (fread(&NumEntries, sizeof(unsigned), 1, F) != 1) {
- cerr << ToolName << ": data packet truncated!\n";
+ errs() << ToolName << ": data packet truncated!\n";
perror(0);
exit(1);
}
// Read in the block of data...
if (fread(&TempSpace[0], sizeof(unsigned)*NumEntries, 1, F) != 1) {
- cerr << ToolName << ": data packet truncated!\n";
+ errs() << ToolName << ": data packet truncated!\n";
perror(0);
exit(1);
}
- // Make sure we have enough space...
+ // Make sure we have enough space... The space is initialised to -1 to
+ // facitiltate the loading of missing values for OptimalEdgeProfiling.
if (Data.size() < NumEntries)
- Data.resize(NumEntries);
+ Data.resize(NumEntries, ProfileInfoLoader::Uncounted);
// Accumulate the data we just read into the data.
if (!ShouldByteSwap) {
- for (unsigned i = 0; i != NumEntries; ++i)
- Data[i] += TempSpace[i];
+ for (unsigned i = 0; i != NumEntries; ++i) {
+ Data[i] = AddCounts(TempSpace[i], Data[i]);
+ }
} else {
- for (unsigned i = 0; i != NumEntries; ++i)
- Data[i] += ByteSwap(TempSpace[i], true);
+ for (unsigned i = 0; i != NumEntries; ++i) {
+ Data[i] = AddCounts(ByteSwap(TempSpace[i], true), Data[i]);
+ }
}
}
+const unsigned ProfileInfoLoader::Uncounted = ~0U;
+
// ProfileInfoLoader ctor - Read the specified profiling data file, exiting the
// program if the file is invalid or broken.
//
Module &TheModule) :
Filename(Filename),
M(TheModule), Warned(false) {
- FILE *F = fopen(Filename.c_str(), "r");
+ FILE *F = fopen(Filename.c_str(), "rb");
if (F == 0) {
- cerr << ToolName << ": Error opening '" << Filename << "': ";
+ errs() << ToolName << ": Error opening '" << Filename << "': ";
perror(0);
exit(1);
}
case ArgumentInfo: {
unsigned ArgLength;
if (fread(&ArgLength, sizeof(unsigned), 1, F) != 1) {
- cerr << ToolName << ": arguments packet truncated!\n";
+ errs() << ToolName << ": arguments packet truncated!\n";
perror(0);
exit(1);
}
if (ArgLength)
if (fread(&Chars[0], (ArgLength+3) & ~3, 1, F) != 1) {
- cerr << ToolName << ": arguments packet truncated!\n";
+ errs() << ToolName << ": arguments packet truncated!\n";
perror(0);
exit(1);
}
ReadProfilingBlock(ToolName, F, ShouldByteSwap, EdgeCounts);
break;
+ case OptEdgeInfo:
+ ReadProfilingBlock(ToolName, F, ShouldByteSwap, OptimalEdgeCounts);
+ break;
+
case BBTraceInfo:
ReadProfilingBlock(ToolName, F, ShouldByteSwap, BBTrace);
break;
default:
- cerr << ToolName << ": Unknown packet type #" << PacketType << "!\n";
+ errs() << ToolName << ": Unknown packet type #" << PacketType << "!\n";
exit(1);
}
}