More ProfileInfo improvements.
- Part of optimal static profiling patch sequence by Andreas Neustifter.
- Store edge, block, and function information separately for each functions
(instead of in one giant map).
- Return frequencies as double instead of int, and use a sentinel value for
missing information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78477 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Instrumentation/EdgeProfiling.cpp b/lib/Transforms/Instrumentation/EdgeProfiling.cpp
index f291b44..283f863 100644
--- a/lib/Transforms/Instrumentation/EdgeProfiling.cpp
+++ b/lib/Transforms/Instrumentation/EdgeProfiling.cpp
@@ -55,7 +55,10 @@
std::set<BasicBlock*> BlocksToInstrument;
unsigned NumEdges = 0;
- for (Module::iterator F = M.begin(), E = M.end(); F != E; ++F)
+ for (Module::iterator F = M.begin(), E = M.end(); F != E; ++F) {
+ if (F->isDeclaration()) continue;
+ // Reserve space for (0,entry) edge.
+ ++NumEdges;
for (Function::iterator BB = F->begin(), E = F->end(); BB != E; ++BB) {
// Keep track of which blocks need to be instrumented. We don't want to
// instrument blocks that are added as the result of breaking critical
@@ -63,6 +66,7 @@
BlocksToInstrument.insert(BB);
NumEdges += BB->getTerminator()->getNumSuccessors();
}
+ }
const Type *ATy = ArrayType::get(Type::Int32Ty, NumEdges);
GlobalVariable *Counters =
@@ -71,7 +75,10 @@
// Instrument all of the edges...
unsigned i = 0;
- for (Module::iterator F = M.begin(), E = M.end(); F != E; ++F)
+ for (Module::iterator F = M.begin(), E = M.end(); F != E; ++F) {
+ if (F->isDeclaration()) continue;
+ // Create counter for (0,entry) edge.
+ IncrementCounterInBlock(&F->getEntryBlock(), i++, Counters);
for (Function::iterator BB = F->begin(), E = F->end(); BB != E; ++BB)
if (BlocksToInstrument.count(BB)) { // Don't instrument inserted blocks
// Okay, we have to add a counter of each outgoing edge. If the
@@ -94,6 +101,7 @@
}
}
}
+ }
// Add the initialization call to main.
InsertProfilingInitCall(Main, "llvm_start_edge_profiling", Counters);