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[Inliner] clang-format various parts of the inliner prior to changes
here. NFC. llvm-svn: 277557
This commit is contained in:
parent
2b69153c7d
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@ -12,7 +12,6 @@
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Transforms/IPO.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/Analysis/AssumptionCache.h"
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#include "llvm/Analysis/CallGraph.h"
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@ -26,6 +25,7 @@
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#include "llvm/IR/IntrinsicInst.h"
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#include "llvm/IR/Module.h"
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#include "llvm/IR/Type.h"
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#include "llvm/Transforms/IPO.h"
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#include "llvm/Transforms/IPO/InlinerPass.h"
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using namespace llvm;
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@ -55,21 +55,20 @@ public:
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using llvm::Pass::doFinalization;
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bool doFinalization(CallGraph &CG) override {
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return removeDeadFunctions(CG, /*AlwaysInlineOnly=*/ true);
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return removeDeadFunctions(CG, /*AlwaysInlineOnly=*/true);
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}
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};
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}
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char AlwaysInliner::ID = 0;
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INITIALIZE_PASS_BEGIN(AlwaysInliner, "always-inline",
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"Inliner for always_inline functions", false, false)
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"Inliner for always_inline functions", false, false)
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INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
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INITIALIZE_PASS_DEPENDENCY(CallGraphWrapperPass)
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INITIALIZE_PASS_DEPENDENCY(ProfileSummaryInfoWrapperPass)
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INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
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INITIALIZE_PASS_END(AlwaysInliner, "always-inline",
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"Inliner for always_inline functions", false, false)
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"Inliner for always_inline functions", false, false)
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Pass *llvm::createAlwaysInlinerPass() { return new AlwaysInliner(); }
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@ -61,8 +61,8 @@ public:
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InlineCost getInlineCost(CallSite CS) override {
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Function *Callee = CS.getCalledFunction();
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TargetTransformInfo &TTI = TTIWP->getTTI(*Callee);
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std::function<AssumptionCache &(Function &)> GetAssumptionCache = [&](
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Function &F) -> AssumptionCache & {
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std::function<AssumptionCache &(Function &)> GetAssumptionCache =
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[&](Function &F) -> AssumptionCache & {
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return ACT->getAssumptionCache(F);
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};
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return llvm::getInlineCost(CS, DefaultThreshold, TTI, GetAssumptionCache,
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@ -79,15 +79,15 @@ private:
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} // end anonymous namespace
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char SimpleInliner::ID = 0;
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INITIALIZE_PASS_BEGIN(SimpleInliner, "inline",
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"Function Integration/Inlining", false, false)
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INITIALIZE_PASS_BEGIN(SimpleInliner, "inline", "Function Integration/Inlining",
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false, false)
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INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
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INITIALIZE_PASS_DEPENDENCY(CallGraphWrapperPass)
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INITIALIZE_PASS_DEPENDENCY(ProfileSummaryInfoWrapperPass)
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INITIALIZE_PASS_DEPENDENCY(TargetTransformInfoWrapperPass)
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INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
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INITIALIZE_PASS_END(SimpleInliner, "inline",
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"Function Integration/Inlining", false, false)
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INITIALIZE_PASS_END(SimpleInliner, "inline", "Function Integration/Inlining",
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false, false)
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Pass *llvm::createFunctionInliningPass() { return new SimpleInliner(); }
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@ -81,9 +81,7 @@ void Inliner::getAnalysisUsage(AnalysisUsage &AU) const {
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CallGraphSCCPass::getAnalysisUsage(AU);
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}
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typedef DenseMap<ArrayType*, std::vector<AllocaInst*> >
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InlinedArrayAllocasTy;
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typedef DenseMap<ArrayType *, std::vector<AllocaInst *>> InlinedArrayAllocasTy;
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/// If it is possible to inline the specified call site,
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/// do so and update the CallGraph for this operation.
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@ -134,8 +132,8 @@ static bool InlineCallIfPossible(
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//
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// Because we don't have this information, we do this simple and useful hack.
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//
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SmallPtrSet<AllocaInst*, 16> UsedAllocas;
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SmallPtrSet<AllocaInst *, 16> UsedAllocas;
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// When processing our SCC, check to see if CS was inlined from some other
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// call site. For example, if we're processing "A" in this code:
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// A() { B() }
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@ -148,25 +146,25 @@ static bool InlineCallIfPossible(
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// because their scopes are not disjoint. We could make this smarter by
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// keeping track of the inline history for each alloca in the
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// InlinedArrayAllocas but this isn't likely to be a significant win.
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if (InlineHistory != -1) // Only do merging for top-level call sites in SCC.
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if (InlineHistory != -1) // Only do merging for top-level call sites in SCC.
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return true;
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// Loop over all the allocas we have so far and see if they can be merged with
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// a previously inlined alloca. If not, remember that we had it.
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for (unsigned AllocaNo = 0, e = IFI.StaticAllocas.size();
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AllocaNo != e; ++AllocaNo) {
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for (unsigned AllocaNo = 0, e = IFI.StaticAllocas.size(); AllocaNo != e;
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++AllocaNo) {
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AllocaInst *AI = IFI.StaticAllocas[AllocaNo];
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// Don't bother trying to merge array allocations (they will usually be
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// canonicalized to be an allocation *of* an array), or allocations whose
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// type is not itself an array (because we're afraid of pessimizing SRoA).
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ArrayType *ATy = dyn_cast<ArrayType>(AI->getAllocatedType());
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if (!ATy || AI->isArrayAllocation())
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continue;
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// Get the list of all available allocas for this array type.
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std::vector<AllocaInst*> &AllocasForType = InlinedArrayAllocas[ATy];
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std::vector<AllocaInst *> &AllocasForType = InlinedArrayAllocas[ATy];
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// Loop over the allocas in AllocasForType to see if we can reuse one. Note
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// that we have to be careful not to reuse the same "available" alloca for
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// multiple different allocas that we just inlined, we use the 'UsedAllocas'
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@ -177,22 +175,22 @@ static bool InlineCallIfPossible(
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unsigned Align1 = AI->getAlignment(),
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Align2 = AvailableAlloca->getAlignment();
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// The available alloca has to be in the right function, not in some other
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// function in this SCC.
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if (AvailableAlloca->getParent() != AI->getParent())
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continue;
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// If the inlined function already uses this alloca then we can't reuse
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// it.
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if (!UsedAllocas.insert(AvailableAlloca).second)
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continue;
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// Otherwise, we *can* reuse it, RAUW AI into AvailableAlloca and declare
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// success!
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DEBUG(dbgs() << " ***MERGED ALLOCA: " << *AI << "\n\t\tINTO: "
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<< *AvailableAlloca << '\n');
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DEBUG(dbgs() << " ***MERGED ALLOCA: " << *AI
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<< "\n\t\tINTO: " << *AvailableAlloca << '\n');
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// Move affected dbg.declare calls immediately after the new alloca to
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// avoid the situation when a dbg.declare preceeds its alloca.
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if (auto *L = LocalAsMetadata::getIfExists(AI))
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@ -226,7 +224,7 @@ static bool InlineCallIfPossible(
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// If we already nuked the alloca, we're done with it.
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if (MergedAwayAlloca)
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continue;
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// If we were unable to merge away the alloca either because there are no
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// allocas of the right type available or because we reused them all
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// already, remember that this alloca came from an inlined function and mark
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@ -235,7 +233,7 @@ static bool InlineCallIfPossible(
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AllocasForType.push_back(AI);
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UsedAllocas.insert(AI);
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}
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return true;
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}
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@ -327,28 +325,28 @@ shouldBeDeferred(Function *Caller, CallSite CS, InlineCost IC,
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static bool shouldInline(CallSite CS,
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std::function<InlineCost(CallSite CS)> GetInlineCost) {
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InlineCost IC = GetInlineCost(CS);
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if (IC.isAlways()) {
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DEBUG(dbgs() << " Inlining: cost=always"
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<< ", Call: " << *CS.getInstruction() << "\n");
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<< ", Call: " << *CS.getInstruction() << "\n");
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emitAnalysis(CS, Twine(CS.getCalledFunction()->getName()) +
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" should always be inlined (cost=always)");
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return true;
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}
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if (IC.isNever()) {
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DEBUG(dbgs() << " NOT Inlining: cost=never"
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<< ", Call: " << *CS.getInstruction() << "\n");
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<< ", Call: " << *CS.getInstruction() << "\n");
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emitAnalysis(CS, Twine(CS.getCalledFunction()->getName() +
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" should never be inlined (cost=never)"));
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return false;
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}
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Function *Caller = CS.getCaller();
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if (!IC) {
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DEBUG(dbgs() << " NOT Inlining: cost=" << IC.getCost()
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<< ", thres=" << (IC.getCostDelta() + IC.getCost())
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<< ", Call: " << *CS.getInstruction() << "\n");
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<< ", thres=" << (IC.getCostDelta() + IC.getCost())
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<< ", Call: " << *CS.getInstruction() << "\n");
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emitAnalysis(CS, Twine(CS.getCalledFunction()->getName() +
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" too costly to inline (cost=") +
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Twine(IC.getCost()) + ", threshold=" +
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@ -359,8 +357,8 @@ static bool shouldInline(CallSite CS,
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int TotalSecondaryCost = 0;
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if (shouldBeDeferred(Caller, CS, IC, TotalSecondaryCost, GetInlineCost)) {
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DEBUG(dbgs() << " NOT Inlining: " << *CS.getInstruction()
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<< " Cost = " << IC.getCost()
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<< ", outer Cost = " << TotalSecondaryCost << '\n');
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<< " Cost = " << IC.getCost()
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<< ", outer Cost = " << TotalSecondaryCost << '\n');
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emitAnalysis(CS, Twine("Not inlining. Cost of inlining " +
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CS.getCalledFunction()->getName() +
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" increases the cost of inlining " +
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@ -369,8 +367,8 @@ static bool shouldInline(CallSite CS,
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}
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DEBUG(dbgs() << " Inlining: cost=" << IC.getCost()
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<< ", thres=" << (IC.getCostDelta() + IC.getCost())
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<< ", Call: " << *CS.getInstruction() << '\n');
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<< ", thres=" << (IC.getCostDelta() + IC.getCost())
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<< ", Call: " << *CS.getInstruction() << '\n');
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emitAnalysis(
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CS, CS.getCalledFunction()->getName() + Twine(" can be inlined into ") +
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CS.getCaller()->getName() + " with cost=" + Twine(IC.getCost()) +
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@ -380,8 +378,9 @@ static bool shouldInline(CallSite CS,
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/// Return true if the specified inline history ID
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/// indicates an inline history that includes the specified function.
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static bool InlineHistoryIncludes(Function *F, int InlineHistoryID,
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const SmallVectorImpl<std::pair<Function*, int> > &InlineHistory) {
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static bool InlineHistoryIncludes(
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Function *F, int InlineHistoryID,
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const SmallVectorImpl<std::pair<Function *, int>> &InlineHistory) {
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while (InlineHistoryID != -1) {
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assert(unsigned(InlineHistoryID) < InlineHistory.size() &&
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"Invalid inline history ID");
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@ -412,11 +411,12 @@ inlineCallsImpl(CallGraphSCC &SCC, CallGraph &CG,
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std::function<InlineCost(CallSite CS)> GetInlineCost,
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std::function<AAResults &(Function &)> AARGetter,
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ImportedFunctionsInliningStatistics &ImportedFunctionsStats) {
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SmallPtrSet<Function*, 8> SCCFunctions;
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SmallPtrSet<Function *, 8> SCCFunctions;
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DEBUG(dbgs() << "Inliner visiting SCC:");
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for (CallGraphNode *Node : SCC) {
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Function *F = Node->getFunction();
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if (F) SCCFunctions.insert(F);
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if (F)
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SCCFunctions.insert(F);
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DEBUG(dbgs() << " " << (F ? F->getName() : "INDIRECTNODE"));
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}
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@ -424,17 +424,18 @@ inlineCallsImpl(CallGraphSCC &SCC, CallGraph &CG,
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// inline call sites in the original functions, not call sites that result
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// from inlining other functions.
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SmallVector<std::pair<CallSite, int>, 16> CallSites;
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// When inlining a callee produces new call sites, we want to keep track of
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// the fact that they were inlined from the callee. This allows us to avoid
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// infinite inlining in some obscure cases. To represent this, we use an
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// index into the InlineHistory vector.
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SmallVector<std::pair<Function*, int>, 8> InlineHistory;
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SmallVector<std::pair<Function *, int>, 8> InlineHistory;
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for (CallGraphNode *Node : SCC) {
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Function *F = Node->getFunction();
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if (!F) continue;
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if (!F)
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continue;
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for (BasicBlock &BB : *F)
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for (Instruction &I : BB) {
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CallSite CS(cast<Value>(&I));
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@ -442,14 +443,14 @@ inlineCallsImpl(CallGraphSCC &SCC, CallGraph &CG,
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// never be inlined.
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if (!CS || isa<IntrinsicInst>(I))
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continue;
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// If this is a direct call to an external function, we can never inline
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// it. If it is an indirect call, inlining may resolve it to be a
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// direct call, so we keep it.
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if (Function *Callee = CS.getCalledFunction())
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if (Callee->isDeclaration())
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continue;
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CallSites.push_back(std::make_pair(CS, -1));
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}
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}
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@ -468,7 +469,6 @@ inlineCallsImpl(CallGraphSCC &SCC, CallGraph &CG,
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if (SCCFunctions.count(F))
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std::swap(CallSites[i--], CallSites[--FirstCallInSCC]);
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InlinedArrayAllocasTy InlinedArrayAllocas;
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InlineFunctionInfo InlineInfo(&CG, &GetAssumptionCache);
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@ -483,7 +483,7 @@ inlineCallsImpl(CallGraphSCC &SCC, CallGraph &CG,
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// CallSites may be modified inside so ranged for loop can not be used.
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for (unsigned CSi = 0; CSi != CallSites.size(); ++CSi) {
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CallSite CS = CallSites[CSi].first;
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Function *Caller = CS.getCaller();
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Function *Callee = CS.getCalledFunction();
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@ -492,16 +492,17 @@ inlineCallsImpl(CallGraphSCC &SCC, CallGraph &CG,
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// size. This happens because IPSCCP propagates the result out of the
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// call and then we're left with the dead call.
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if (isInstructionTriviallyDead(CS.getInstruction(), &TLI)) {
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DEBUG(dbgs() << " -> Deleting dead call: "
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<< *CS.getInstruction() << "\n");
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DEBUG(dbgs() << " -> Deleting dead call: " << *CS.getInstruction()
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<< "\n");
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// Update the call graph by deleting the edge from Callee to Caller.
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CG[Caller]->removeCallEdgeFor(CS);
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CS.getInstruction()->eraseFromParent();
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++NumCallsDeleted;
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} else {
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// We can only inline direct calls to non-declarations.
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if (!Callee || Callee->isDeclaration()) continue;
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if (!Callee || Callee->isDeclaration())
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continue;
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// If this call site was obtained by inlining another function, verify
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// that the include path for the function did not include the callee
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// itself. If so, we'd be recursively inlining the same function,
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@ -511,7 +512,7 @@ inlineCallsImpl(CallGraphSCC &SCC, CallGraph &CG,
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if (InlineHistoryID != -1 &&
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InlineHistoryIncludes(Callee, InlineHistoryID, InlineHistory))
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continue;
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LLVMContext &CallerCtx = Caller->getContext();
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// Get DebugLoc to report. CS will be invalid after Inliner.
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@ -556,30 +557,30 @@ inlineCallsImpl(CallGraphSCC &SCC, CallGraph &CG,
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CallSites.push_back(std::make_pair(CallSite(Ptr), NewHistoryID));
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}
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}
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// If we inlined or deleted the last possible call site to the function,
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// delete the function body now.
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if (Callee && Callee->use_empty() && Callee->hasLocalLinkage() &&
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// TODO: Can remove if in SCC now.
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!SCCFunctions.count(Callee) &&
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// The function may be apparently dead, but if there are indirect
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// callgraph references to the node, we cannot delete it yet, this
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// could invalidate the CGSCC iterator.
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CG[Callee]->getNumReferences() == 0) {
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DEBUG(dbgs() << " -> Deleting dead function: "
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<< Callee->getName() << "\n");
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DEBUG(dbgs() << " -> Deleting dead function: " << Callee->getName()
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<< "\n");
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CallGraphNode *CalleeNode = CG[Callee];
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// Remove any call graph edges from the callee to its callees.
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CalleeNode->removeAllCalledFunctions();
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// Removing the node for callee from the call graph and delete it.
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delete CG.removeFunctionFromModule(CalleeNode);
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++NumDeleted;
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}
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// Remove this call site from the list. If possible, use
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// Remove this call site from the list. If possible, use
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// swap/pop_back for efficiency, but do not use it if doing so would
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// move a call site to a function in this SCC before the
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// 'FirstCallInSCC' barrier.
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@ -587,7 +588,7 @@ inlineCallsImpl(CallGraphSCC &SCC, CallGraph &CG,
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CallSites[CSi] = CallSites.back();
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CallSites.pop_back();
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} else {
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CallSites.erase(CallSites.begin()+CSi);
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CallSites.erase(CallSites.begin() + CSi);
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}
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--CSi;
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@ -633,7 +634,7 @@ bool Inliner::doFinalization(CallGraph &CG) {
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/// Remove dead functions that are not included in DNR (Do Not Remove) list.
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bool Inliner::removeDeadFunctions(CallGraph &CG, bool AlwaysInlineOnly) {
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SmallVector<CallGraphNode*, 16> FunctionsToRemove;
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SmallVector<CallGraphNode *, 16> FunctionsToRemove;
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SmallVector<CallGraphNode *, 16> DeadFunctionsInComdats;
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SmallDenseMap<const Comdat *, int, 16> ComdatEntriesAlive;
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@ -725,9 +726,9 @@ bool Inliner::removeDeadFunctions(CallGraph &CG, bool AlwaysInlineOnly) {
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// here to do this, it doesn't matter which order the functions are deleted
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// in.
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array_pod_sort(FunctionsToRemove.begin(), FunctionsToRemove.end());
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FunctionsToRemove.erase(std::unique(FunctionsToRemove.begin(),
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FunctionsToRemove.end()),
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FunctionsToRemove.end());
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FunctionsToRemove.erase(
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std::unique(FunctionsToRemove.begin(), FunctionsToRemove.end()),
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FunctionsToRemove.end());
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for (CallGraphNode *CGN : FunctionsToRemove) {
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delete CG.removeFunctionFromModule(CGN);
|
||||
++NumDeleted;
|
||||
|
Loading…
Reference in New Issue
Block a user