#include "llvm/Support/raw_ostream.h"
#include <cstdio>
#include <cstdlib>
-#include <map>
using namespace llvm;
// ByteSwap - Byteswap 'Var' if 'Really' is true.
//
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,
// 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, -1);
+ Data.resize(NumEntries, ProfileInfoLoader::Uncounted);
// Accumulate the data we just read into the data.
if (!ShouldByteSwap) {
for (unsigned i = 0; i != NumEntries; ++i) {
- unsigned data = TempSpace[i];
- if (data != (unsigned)-1) { // only load data if its not MissingVal
- if (Data[i] == (unsigned)-1) {
- Data[i] = data; // if data is still initialised
- } else {
- Data[i] += data;
- }
- }
+ Data[i] = AddCounts(TempSpace[i], Data[i]);
}
} else {
for (unsigned i = 0; i != NumEntries; ++i) {
- unsigned data = ByteSwap(TempSpace[i], true);
- if (data != (unsigned)-1) { // only load data if its not MissingVal
- if (Data[i] == (unsigned)-1) {
- Data[i] = data;
- } else {
- Data[i] += data;
- }
- }
+ 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.
//