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Add initial support for reading edge counts. This will be improved to enable
translation of edge counts into block/function counts when possible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12229 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -14,6 +14,7 @@
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#include "llvm/Analysis/ProfileInfoLoader.h"
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#include "llvm/Module.h"
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#include "llvm/InstrTypes.h"
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#include <cstdio>
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using namespace llvm;
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@ -21,6 +22,7 @@ enum ProfilingType {
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ArgumentInfo = 1, // The command line argument block
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FunctionInfo = 2, // Function profiling information
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BlockInfo = 3, // Block profiling information
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EdgeInfo = 4, // Edge profiling information
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};
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// ByteSwap - Byteswap 'Var' if 'Really' is true.
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@ -122,6 +124,10 @@ ProfileInfoLoader::ProfileInfoLoader(const char *ToolName,
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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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default:
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std::cerr << ToolName << ": Unknown packet type #" << PacketType << "!\n";
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exit(1);
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@ -178,3 +184,26 @@ void ProfileInfoLoader::getBlockCounts(std::vector<std::pair<BasicBlock*,
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return;
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}
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}
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// getEdgeCounts - This method is used by consumers of edge counting
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// information. If we do not directly have edge count information, we compute
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// it from other, more refined, types of profile information.
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//
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void ProfileInfoLoader::getEdgeCounts(std::vector<std::pair<Edge,
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unsigned> > &Counts) {
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if (EdgeCounts.empty()) {
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std::cerr << "Edge counts not available, and no synthesis "
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<< "is implemented yet!\n";
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return;
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}
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unsigned Counter = 0;
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for (Module::iterator F = M.begin(), E = M.end(); F != E; ++F)
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for (Function::iterator BB = F->begin(), E = F->end(); BB != E; ++BB)
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for (unsigned i = 0, e = BB->getTerminator()->getNumSuccessors();
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i != e; ++i) {
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Counts.push_back(std::make_pair(Edge(BB, i), EdgeCounts[Counter++]));
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if (Counter == EdgeCounts.size())
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return;
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}
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}
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