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In debug builds, make a statistic for each kind of call optimization. This

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helps track down what gets triggered in the pass so its easier to identify
good test cases.

llvm-svn: 21582
This commit is contained in:
Reid Spencer 2005-04-27 00:05:45 +00:00
parent bd077a1945
commit 27f80b8c96
1 changed files with 35 additions and 21 deletions
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56
lib/Transforms/IPO/SimplifyLibCalls.cpp
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@ -96,8 +96,16 @@ namespace {
) = 0;
const char * getFunctionName() const { return func_name; }
#ifndef NDEBUG
void activate() { ++activations; }
#endif
private:
const char* func_name;
#ifndef NDEBUG
Statistic<> activations;
#endif
};
/// @brief The list of optimizations deriving from CallOptimizer
@ -106,6 +114,9 @@ namespace {
CallOptimizer::CallOptimizer(const char* fname)
: func_name(fname)
#ifndef NDEBUG
, activations(fname,"Number of calls simplified")
#endif
{
// Register this call optimizer
optlist[func_name] = this;
@ -149,30 +160,33 @@ bool SimplifyLibCalls::runOnModule(Module &M)
// because they live in a runtime library somewhere and were (probably)
// not compiled by LLVM. So, we only act on external functions that have
// external linkage and non-empty uses.
if (FI->isExternal() && FI->hasExternalLinkage() && !FI->use_empty())
if (!FI->isExternal() || !FI->hasExternalLinkage() || FI->use_empty())
continue;
// Get the optimization class that pertains to this function
CallOptimizer* CO = optlist[FI->getName().c_str()];
if (!CO)
continue;
// Make sure the called function is suitable for the optimization
if (!CO->ValidateCalledFunction(FI,TD))
continue;
// Loop over each of the uses of the function
for (Value::use_iterator UI = FI->use_begin(), UE = FI->use_end();
UI != UE ; )
{
// Get the optimization class that pertains to this function
if (CallOptimizer* CO = optlist[FI->getName().c_str()] )
// If the use of the function is a call instruction
if (CallInst* CI = dyn_cast<CallInst>(*UI++))
{
// Make sure the called function is suitable for the optimization
if (CO->ValidateCalledFunction(FI,TD))
// Do the optimization on the CallOptimizer.
if (CO->OptimizeCall(CI,TD))
{
// Loop over each of the uses of the function
for (Value::use_iterator UI = FI->use_begin(), UE = FI->use_end();
UI != UE ; )
{
// If the use of the function is a call instruction
if (CallInst* CI = dyn_cast<CallInst>(*UI++))
{
// Do the optimization on the CallOptimizer.
if (CO->OptimizeCall(CI,TD))
{
++SimplifiedLibCalls;
found_optimization = result = true;
DEBUG(std::cerr << "simplify-libcall: " << CO->getFunctionName() << "\n");
}
}
}
++SimplifiedLibCalls;
found_optimization = result = true;
#ifndef NDEBUG
CO->activate();
#endif
}
}
}