98ef93eabd
Summary: This patch introduces an analysis pass to extract function features, which will be needed by the ML InlineAdvisor. RFC: http://lists.llvm.org/pipermail/llvm-dev/2020-April/140763.html Reviewers: davidxl, dblaikie, jdoerfert Subscribers: mgorny, hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D80579
28 lines
1.0 KiB
C++
28 lines
1.0 KiB
C++
#include "llvm/Analysis/ML/InlineFeaturesAnalysis.h"
|
|
#include "llvm/IR/Instructions.h"
|
|
|
|
using namespace llvm;
|
|
|
|
AnalysisKey InlineFeaturesAnalysis::Key;
|
|
|
|
InlineFeaturesAnalysis::Result
|
|
InlineFeaturesAnalysis::run(const Function &F, FunctionAnalysisManager &FAM) {
|
|
Result Ret;
|
|
Ret.Uses = ((!F.hasLocalLinkage()) ? 1 : 0) + F.getNumUses();
|
|
for (const auto &BB : F) {
|
|
++Ret.BasicBlockCount;
|
|
if (const auto *BI = dyn_cast<BranchInst>(BB.getTerminator())) {
|
|
if (BI->isConditional())
|
|
Ret.BlocksReachedFromConditionalInstruction += BI->getNumSuccessors();
|
|
} else if (const auto *SI = dyn_cast<SwitchInst>(BB.getTerminator()))
|
|
Ret.BlocksReachedFromConditionalInstruction +=
|
|
(SI->getNumCases() + (nullptr != SI->getDefaultDest()));
|
|
for (const auto &I : BB)
|
|
if (auto *CS = dyn_cast<CallBase>(&I)) {
|
|
const auto *Callee = CS->getCalledFunction();
|
|
if (Callee && !Callee->isIntrinsic() && !Callee->isDeclaration())
|
|
++Ret.DirectCallsToDefinedFunctions;
|
|
}
|
|
}
|
|
return Ret;
|
|
} |