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[GlobalOpt] Coding style - remove function names from doxygen comments

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Suggested by Mehdi in the review of D14148.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@253029 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
James Molloy 2015-11-13 11:05:07 +00:00
parent 57e32e94e3
commit b81f7b0bc9
1 changed files with 115 additions and 126 deletions
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241
lib/Transforms/IPO/GlobalOpt.cpp
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@ -100,8 +100,8 @@ INITIALIZE_PASS_END(GlobalOpt, "globalopt",
ModulePass *llvm::createGlobalOptimizerPass() { return new GlobalOpt(); }
/// isLeakCheckerRoot - Is this global variable possibly used by a leak checker
/// as a root? If so, we might not really want to eliminate the stores to it.
/// Is this global variable possibly used by a leak checker as a root? If so,
/// we might not really want to eliminate the stores to it.
static bool isLeakCheckerRoot(GlobalVariable *GV) {
// A global variable is a root if it is a pointer, or could plausibly contain
// a pointer. There are two challenges; one is that we could have a struct
@ -176,10 +176,9 @@ static bool IsSafeComputationToRemove(Value *V, const TargetLibraryInfo *TLI) {
} while (1);
}
/// CleanupPointerRootUsers - This GV is a pointer root. Loop over all users
/// of the global and clean up any that obviously don't assign the global a
/// value that isn't dynamically allocated.
///
/// This GV is a pointer root. Loop over all users of the global and clean up
/// any that obviously don't assign the global a value that isn't dynamically
/// allocated.
static bool CleanupPointerRootUsers(GlobalVariable *GV,
const TargetLibraryInfo *TLI) {
// A brief explanation of leak checkers. The goal is to find bugs where
@ -263,10 +262,9 @@ static bool CleanupPointerRootUsers(GlobalVariable *GV,
return Changed;
}
/// CleanupConstantGlobalUsers - We just marked GV constant. Loop over all
/// users of the global, cleaning up the obvious ones. This is largely just a
/// quick scan over the use list to clean up the easy and obvious cruft. This
/// returns true if it made a change.
/// We just marked GV constant. Loop over all users of the global, cleaning up
/// the obvious ones. This is largely just a quick scan over the use list to
/// clean up the easy and obvious cruft. This returns true if it made a change.
static bool CleanupConstantGlobalUsers(Value *V, Constant *Init,
const DataLayout &DL,
TargetLibraryInfo *TLI) {
@ -353,8 +351,8 @@ static bool CleanupConstantGlobalUsers(Value *V, Constant *Init,
return Changed;
}
/// isSafeSROAElementUse - Return true if the specified instruction is a safe
/// user of a derived expression from a global that we want to SROA.
/// Return true if the specified instruction is a safe user of a derived
/// expression from a global that we want to SROA.
static bool isSafeSROAElementUse(Value *V) {
// We might have a dead and dangling constant hanging off of here.
if (Constant *C = dyn_cast<Constant>(V))
@ -385,9 +383,8 @@ static bool isSafeSROAElementUse(Value *V) {
}
/// IsUserOfGlobalSafeForSRA - U is a direct user of the specified global value.
/// Look at it and its uses and decide whether it is safe to SROA this global.
///
/// U is a direct user of the specified global value. Look at it and its uses
/// and decide whether it is safe to SROA this global.
static bool IsUserOfGlobalSafeForSRA(User *U, GlobalValue *GV) {
// The user of the global must be a GEP Inst or a ConstantExpr GEP.
if (!isa<GetElementPtrInst>(U) &&
@ -452,9 +449,8 @@ static bool IsUserOfGlobalSafeForSRA(User *U, GlobalValue *GV) {
return true;
}
/// GlobalUsersSafeToSRA - Look at all uses of the global and decide whether it
/// is safe for us to perform this transformation.
///
/// Look at all uses of the global and decide whether it is safe for us to
/// perform this transformation.
static bool GlobalUsersSafeToSRA(GlobalValue *GV) {
for (User *U : GV->users())
if (!IsUserOfGlobalSafeForSRA(U, GV))
@ -464,10 +460,10 @@ static bool GlobalUsersSafeToSRA(GlobalValue *GV) {
}
/// SRAGlobal - Perform scalar replacement of aggregates on the specified global
/// variable. This opens the door for other optimizations by exposing the
/// behavior of the program in a more fine-grained way. We have determined that
/// this transformation is safe already. We return the first global variable we
/// Perform scalar replacement of aggregates on the specified global variable.
/// This opens the door for other optimizations by exposing the behavior of the
/// program in a more fine-grained way. We have determined that this
/// transformation is safe already. We return the first global variable we
/// insert so that the caller can reprocess it.
static GlobalVariable *SRAGlobal(GlobalVariable *GV, const DataLayout &DL) {
// Make sure this global only has simple uses that we can SRA.
@ -612,9 +608,9 @@ static GlobalVariable *SRAGlobal(GlobalVariable *GV, const DataLayout &DL) {
return FirstGlobal != NewGlobals.size() ? NewGlobals[FirstGlobal] : nullptr;
}
/// AllUsesOfValueWillTrapIfNull - Return true if all users of the specified
/// value will trap if the value is dynamically null. PHIs keeps track of any
/// phi nodes we've seen to avoid reprocessing them.
/// Return true if all users of the specified value will trap if the value is
/// dynamically null. PHIs keeps track of any phi nodes we've seen to avoid
/// reprocessing them.
static bool AllUsesOfValueWillTrapIfNull(const Value *V,
SmallPtrSetImpl<const PHINode*> &PHIs) {
for (const User *U : V->users())
@ -655,9 +651,9 @@ static bool AllUsesOfValueWillTrapIfNull(const Value *V,
return true;
}
/// AllUsesOfLoadedValueWillTrapIfNull - Return true if all uses of any loads
/// from GV will trap if the loaded value is null. Note that this also permits
/// comparisons of the loaded value against null, as a special case.
/// Return true if all uses of any loads from GV will trap if the loaded value
/// is null. Note that this also permits comparisons of the loaded value
/// against null, as a special case.
static bool AllUsesOfLoadedValueWillTrapIfNull(const GlobalVariable *GV) {
for (const User *U : GV->users())
if (const LoadInst *LI = dyn_cast<LoadInst>(U)) {
@ -737,10 +733,10 @@ static bool OptimizeAwayTrappingUsesOfValue(Value *V, Constant *NewV) {
}
/// OptimizeAwayTrappingUsesOfLoads - The specified global has only one non-null
/// value stored into it. If there are uses of the loaded value that would trap
/// if the loaded value is dynamically null, then we know that they cannot be
/// reachable with a null optimize away the load.
/// The specified global has only one non-null value stored into it. If there
/// are uses of the loaded value that would trap if the loaded value is
/// dynamically null, then we know that they cannot be reachable with a null
/// optimize away the load.
static bool OptimizeAwayTrappingUsesOfLoads(GlobalVariable *GV, Constant *LV,
const DataLayout &DL,
TargetLibraryInfo *TLI) {
@ -803,8 +799,8 @@ static bool OptimizeAwayTrappingUsesOfLoads(GlobalVariable *GV, Constant *LV,
return Changed;
}
/// ConstantPropUsersOf - Walk the use list of V, constant folding all of the
/// instructions that are foldable.
/// Walk the use list of V, constant folding all of the instructions that are
/// foldable.
static void ConstantPropUsersOf(Value *V, const DataLayout &DL,
TargetLibraryInfo *TLI) {
for (Value::user_iterator UI = V->user_begin(), E = V->user_end(); UI != E; )
@ -820,11 +816,11 @@ static void ConstantPropUsersOf(Value *V, const DataLayout &DL,
}
}
/// OptimizeGlobalAddressOfMalloc - This function takes the specified global
/// variable, and transforms the program as if it always contained the result of
/// the specified malloc. Because it is always the result of the specified
/// malloc, there is no reason to actually DO the malloc. Instead, turn the
/// malloc into a global, and any loads of GV as uses of the new global.
/// This function takes the specified global variable, and transforms the
/// program as if it always contained the result of the specified malloc.
/// Because it is always the result of the specified malloc, there is no reason
/// to actually DO the malloc. Instead, turn the malloc into a global, and any
/// loads of GV as uses of the new global.
static GlobalVariable *
OptimizeGlobalAddressOfMalloc(GlobalVariable *GV, CallInst *CI, Type *AllocTy,
ConstantInt *NElements, const DataLayout &DL,
@ -953,10 +949,9 @@ OptimizeGlobalAddressOfMalloc(GlobalVariable *GV, CallInst *CI, Type *AllocTy,
return NewGV;
}
/// ValueIsOnlyUsedLocallyOrStoredToOneGlobal - Scan the use-list of V checking
/// to make sure that there are no complex uses of V. We permit simple things
/// like dereferencing the pointer, but not storing through the address, unless
/// it is to the specified global.
/// Scan the use-list of V checking to make sure that there are no complex uses
/// of V. We permit simple things like dereferencing the pointer, but not
/// storing through the address, unless it is to the specified global.
static bool ValueIsOnlyUsedLocallyOrStoredToOneGlobal(const Instruction *V,
const GlobalVariable *GV,
SmallPtrSetImpl<const PHINode*> &PHIs) {
@ -1000,10 +995,9 @@ static bool ValueIsOnlyUsedLocallyOrStoredToOneGlobal(const Instruction *V,
return true;
}
/// ReplaceUsesOfMallocWithGlobal - The Alloc pointer is stored into GV
/// somewhere. Transform all uses of the allocation into loads from the
/// global and uses of the resultant pointer. Further, delete the store into
/// GV. This assumes that these value pass the
/// The Alloc pointer is stored into GV somewhere. Transform all uses of the
/// allocation into loads from the global and uses of the resultant pointer.
/// Further, delete the store into GV. This assumes that these value pass the
/// 'ValueIsOnlyUsedLocallyOrStoredToOneGlobal' predicate.
static void ReplaceUsesOfMallocWithGlobal(Instruction *Alloc,
GlobalVariable *GV) {
@ -1045,9 +1039,9 @@ static void ReplaceUsesOfMallocWithGlobal(Instruction *Alloc,
}
}
/// LoadUsesSimpleEnoughForHeapSRA - Verify that all uses of V (a load, or a phi
/// of a load) are simple enough to perform heap SRA on. This permits GEP's
/// that index through the array and struct field, icmps of null, and PHIs.
/// Verify that all uses of V (a load, or a phi of a load) are simple enough to
/// perform heap SRA on. This permits GEP's that index through the array and
/// struct field, icmps of null, and PHIs.
static bool LoadUsesSimpleEnoughForHeapSRA(const Value *V,
SmallPtrSetImpl<const PHINode*> &LoadUsingPHIs,
SmallPtrSetImpl<const PHINode*> &LoadUsingPHIsPerLoad) {
@ -1098,8 +1092,8 @@ static bool LoadUsesSimpleEnoughForHeapSRA(const Value *V,
}
/// AllGlobalLoadUsesSimpleEnoughForHeapSRA - If all users of values loaded from
/// GV are simple enough to perform HeapSRA, return true.
/// If all users of values loaded from GV are simple enough to perform HeapSRA,
/// return true.
static bool AllGlobalLoadUsesSimpleEnoughForHeapSRA(const GlobalVariable *GV,
Instruction *StoredVal) {
SmallPtrSet<const PHINode*, 32> LoadUsingPHIs;
@ -1188,8 +1182,8 @@ static Value *GetHeapSROAValue(Value *V, unsigned FieldNo,
return FieldVals[FieldNo] = Result;
}
/// RewriteHeapSROALoadUser - Given a load instruction and a value derived from
/// the load, rewrite the derived value to use the HeapSRoA'd load.
/// Given a load instruction and a value derived from the load, rewrite the
/// derived value to use the HeapSRoA'd load.
static void RewriteHeapSROALoadUser(Instruction *LoadUser,
DenseMap<Value*, std::vector<Value*> > &InsertedScalarizedValues,
std::vector<std::pair<PHINode*, unsigned> > &PHIsToRewrite) {
@ -1250,10 +1244,9 @@ static void RewriteHeapSROALoadUser(Instruction *LoadUser,
}
}
/// RewriteUsesOfLoadForHeapSRoA - We are performing Heap SRoA on a global. Ptr
/// is a value loaded from the global. Eliminate all uses of Ptr, making them
/// use FieldGlobals instead. All uses of loaded values satisfy
/// AllGlobalLoadUsesSimpleEnoughForHeapSRA.
/// We are performing Heap SRoA on a global. Ptr is a value loaded from the
/// global. Eliminate all uses of Ptr, making them use FieldGlobals instead.
/// All uses of loaded values satisfy AllGlobalLoadUsesSimpleEnoughForHeapSRA.
static void RewriteUsesOfLoadForHeapSRoA(LoadInst *Load,
DenseMap<Value*, std::vector<Value*> > &InsertedScalarizedValues,
std::vector<std::pair<PHINode*, unsigned> > &PHIsToRewrite) {
@ -1268,8 +1261,8 @@ static void RewriteUsesOfLoadForHeapSRoA(LoadInst *Load,
}
}
/// PerformHeapAllocSRoA - CI is an allocation of an array of structures. Break
/// it up into multiple allocations of arrays of the fields.
/// CI is an allocation of an array of structures. Break it up into multiple
/// allocations of arrays of the fields.
static GlobalVariable *PerformHeapAllocSRoA(GlobalVariable *GV, CallInst *CI,
Value *NElems, const DataLayout &DL,
const TargetLibraryInfo *TLI) {
@ -1379,9 +1372,8 @@ static GlobalVariable *PerformHeapAllocSRoA(GlobalVariable *GV, CallInst *CI,
// CI is no longer needed, remove it.
CI->eraseFromParent();
/// InsertedScalarizedLoads - As we process loads, if we can't immediately
/// update all uses of the load, keep track of what scalarized loads are
/// inserted for a given load.
/// As we process loads, if we can't immediately update all uses of the load,
/// keep track of what scalarized loads are inserted for a given load.
DenseMap<Value*, std::vector<Value*> > InsertedScalarizedValues;
InsertedScalarizedValues[GV] = FieldGlobals;
@ -1457,9 +1449,8 @@ static GlobalVariable *PerformHeapAllocSRoA(GlobalVariable *GV, CallInst *CI,
return cast<GlobalVariable>(FieldGlobals[0]);
}
/// TryToOptimizeStoreOfMallocToGlobal - This function is called when we see a
/// pointer global variable with a single value stored it that is a malloc or
/// cast of malloc.
/// This function is called when we see a pointer global variable with a single
/// value stored it that is a malloc or cast of malloc.
static bool TryToOptimizeStoreOfMallocToGlobal(GlobalVariable *GV, CallInst *CI,
Type *AllocTy,
AtomicOrdering Ordering,
@ -1592,10 +1583,10 @@ static bool OptimizeOnceStoredGlobal(GlobalVariable *GV, Value *StoredOnceVal,
return false;
}
/// TryToShrinkGlobalToBoolean - At this point, we have learned that the only
/// two values ever stored into GV are its initializer and OtherVal. See if we
/// can shrink the global into a boolean and select between the two values
/// whenever it is used. This exposes the values to other scalar optimizations.
/// At this point, we have learned that the only two values ever stored into GV
/// are its initializer and OtherVal. See if we can shrink the global into a
/// boolean and select between the two values whenever it is used. This exposes
/// the values to other scalar optimizations.
static bool TryToShrinkGlobalToBoolean(GlobalVariable *GV, Constant *OtherVal) {
Type *GVElType = GV->getType()->getElementType();
@ -1694,8 +1685,8 @@ static bool TryToShrinkGlobalToBoolean(GlobalVariable *GV, Constant *OtherVal) {
}
/// ProcessGlobal - Analyze the specified global variable and optimize it if
/// possible. If we make a change, return true.
/// Analyze the specified global variable and optimize it if possible. If we
/// make a change, return true.
bool GlobalOpt::ProcessGlobal(GlobalVariable *GV,
Module::global_iterator &GVI) {
// Do more involved optimizations if the global is internal.
@ -1727,7 +1718,7 @@ bool GlobalOpt::ProcessGlobal(GlobalVariable *GV,
return ProcessInternalGlobal(GV, GVI, GS);
}
/// ProcessInternalGlobal - Analyze the specified global variable and optimize
/// Analyze the specified global variable and optimize
/// it if possible. If we make a change, return true.
bool GlobalOpt::ProcessInternalGlobal(GlobalVariable *GV,
Module::global_iterator &GVI,
@ -1855,8 +1846,8 @@ bool GlobalOpt::ProcessInternalGlobal(GlobalVariable *GV,
return false;
}
/// ChangeCalleesToFastCall - Walk all of the direct calls of the specified
/// function, changing them to FastCC.
/// Walk all of the direct calls of the specified function, changing them to
/// FastCC.
static void ChangeCalleesToFastCall(Function *F) {
for (User *U : F->users()) {
if (isa<BlockAddress>(U))
@ -1973,8 +1964,8 @@ isSimpleEnoughValueToCommit(Constant *C,
SmallPtrSetImpl<Constant *> &SimpleConstants,
const DataLayout &DL);
/// isSimpleEnoughValueToCommit - Return true if the specified constant can be
/// handled by the code generator. We don't want to generate something like:
/// Return true if the specified constant can be handled by the code generator.
/// We don't want to generate something like:
/// void *X = &X/42;
/// because the code generator doesn't have a relocation that can handle that.
///
@ -2049,11 +2040,11 @@ isSimpleEnoughValueToCommit(Constant *C,
}
/// isSimpleEnoughPointerToCommit - Return true if this constant is simple
/// enough for us to understand. In particular, if it is a cast to anything
/// other than from one pointer type to another pointer type, we punt.
/// We basically just support direct accesses to globals and GEP's of
/// globals. This should be kept up to date with CommitValueTo.
/// Return true if this constant is simple enough for us to understand. In
/// particular, if it is a cast to anything other than from one pointer type to
/// another pointer type, we punt. We basically just support direct accesses to
/// globals and GEP's of globals. This should be kept up to date with
/// CommitValueTo.
static bool isSimpleEnoughPointerToCommit(Constant *C) {
// Conservatively, avoid aggregate types. This is because we don't
// want to worry about them partially overlapping other stores.
@ -2100,9 +2091,9 @@ static bool isSimpleEnoughPointerToCommit(Constant *C) {
return false;
}
/// EvaluateStoreInto - Evaluate a piece of a constantexpr store into a global
/// initializer. This returns 'Init' modified to reflect 'Val' stored into it.
/// At this point, the GEP operands of Addr [0, OpNo) have been stepped into.
/// Evaluate a piece of a constantexpr store into a global initializer. This
/// returns 'Init' modified to reflect 'Val' stored into it. At this point, the
/// GEP operands of Addr [0, OpNo) have been stepped into.
static Constant *EvaluateStoreInto(Constant *Init, Constant *Val,
ConstantExpr *Addr, unsigned OpNo) {
// Base case of the recursion.
@ -2149,7 +2140,7 @@ static Constant *EvaluateStoreInto(Constant *Init, Constant *Val,
return ConstantVector::get(Elts);
}
/// CommitValueTo - We have decided that Addr (which satisfies the predicate
/// We have decided that Addr (which satisfies the predicate
/// isSimpleEnoughPointerToCommit) should get Val as its value. Make it happen.
static void CommitValueTo(Constant *Val, Constant *Addr) {
if (GlobalVariable *GV = dyn_cast<GlobalVariable>(Addr)) {
@ -2165,10 +2156,10 @@ static void CommitValueTo(Constant *Val, Constant *Addr) {
namespace {
/// Evaluator - This class evaluates LLVM IR, producing the Constant
/// representing each SSA instruction. Changes to global variables are stored
/// in a mapping that can be iterated over after the evaluation is complete.
/// Once an evaluation call fails, the evaluation object should not be reused.
/// This class evaluates LLVM IR, producing the Constant representing each SSA
/// instruction. Changes to global variables are stored in a mapping that can
/// be iterated over after the evaluation is complete. Once an evaluation call
/// fails, the evaluation object should not be reused.
class Evaluator {
public:
Evaluator(const DataLayout &DL, const TargetLibraryInfo *TLI)
@ -2185,15 +2176,15 @@ public:
Tmp->replaceAllUsesWith(Constant::getNullValue(Tmp->getType()));
}
/// EvaluateFunction - Evaluate a call to function F, returning true if
/// successful, false if we can't evaluate it. ActualArgs contains the formal
/// arguments for the function.
/// Evaluate a call to function F, returning true if successful, false if we
/// can't evaluate it. ActualArgs contains the formal arguments for the
/// function.
bool EvaluateFunction(Function *F, Constant *&RetVal,
const SmallVectorImpl<Constant*> &ActualArgs);
/// EvaluateBlock - Evaluate all instructions in block BB, returning true if
/// successful, false if we can't evaluate it. NewBB returns the next BB that
/// control flows into, or null upon return.
/// Evaluate all instructions in block BB, returning true if successful, false
/// if we can't evaluate it. NewBB returns the next BB that control flows
/// into, or null upon return.
bool EvaluateBlock(BasicBlock::iterator CurInst, BasicBlock *&NextBB);
Constant *getVal(Value *V) {
@ -2218,32 +2209,31 @@ public:
private:
Constant *ComputeLoadResult(Constant *P);
/// ValueStack - As we compute SSA register values, we store their contents
/// here. The back of the deque contains the current function and the stack
/// contains the values in the calling frames.
/// As we compute SSA register values, we store their contents here. The back
/// of the deque contains the current function and the stack contains the
/// values in the calling frames.
std::deque<DenseMap<Value*, Constant*>> ValueStack;
/// CallStack - This is used to detect recursion. In pathological situations
/// we could hit exponential behavior, but at least there is nothing
/// unbounded.
/// This is used to detect recursion. In pathological situations we could hit
/// exponential behavior, but at least there is nothing unbounded.
SmallVector<Function*, 4> CallStack;
/// MutatedMemory - For each store we execute, we update this map. Loads
/// check this to get the most up-to-date value. If evaluation is successful,
/// this state is committed to the process.
/// For each store we execute, we update this map. Loads check this to get
/// the most up-to-date value. If evaluation is successful, this state is
/// committed to the process.
DenseMap<Constant*, Constant*> MutatedMemory;
/// AllocaTmps - To 'execute' an alloca, we create a temporary global variable
/// to represent its body. This vector is needed so we can delete the
/// temporary globals when we are done.
/// To 'execute' an alloca, we create a temporary global variable to represent
/// its body. This vector is needed so we can delete the temporary globals
/// when we are done.
SmallVector<std::unique_ptr<GlobalVariable>, 32> AllocaTmps;
/// Invariants - These global variables have been marked invariant by the
/// static constructor.
/// These global variables have been marked invariant by the static
/// constructor.
SmallPtrSet<GlobalVariable*, 8> Invariants;
/// SimpleConstants - These are constants we have checked and know to be
/// simple enough to live in a static initializer of a global.
/// These are constants we have checked and know to be simple enough to live
/// in a static initializer of a global.
SmallPtrSet<Constant*, 8> SimpleConstants;
const DataLayout &DL;
@ -2252,9 +2242,8 @@ private:
} // anonymous namespace
/// ComputeLoadResult - Return the value that would be computed by a load from
/// P after the stores reflected by 'memory' have been performed. If we can't
/// decide, return null.
/// Return the value that would be computed by a load from P after the stores
/// reflected by 'memory' have been performed. If we can't decide, return null.
Constant *Evaluator::ComputeLoadResult(Constant *P) {
// If this memory location has been recently stored, use the stored value: it
// is the most up-to-date.
@ -2280,9 +2269,9 @@ Constant *Evaluator::ComputeLoadResult(Constant *P) {
return nullptr; // don't know how to evaluate.
}
/// EvaluateBlock - Evaluate all instructions in block BB, returning true if
/// successful, false if we can't evaluate it. NewBB returns the next BB that
/// control flows into, or null upon return.
/// Evaluate all instructions in block BB, returning true if successful, false
/// if we can't evaluate it. NewBB returns the next BB that control flows into,
/// or null upon return.
bool Evaluator::EvaluateBlock(BasicBlock::iterator CurInst,
BasicBlock *&NextBB) {
// This is the main evaluation loop.
@ -2624,9 +2613,9 @@ bool Evaluator::EvaluateBlock(BasicBlock::iterator CurInst,
}
}
/// EvaluateFunction - Evaluate a call to function F, returning true if
/// successful, false if we can't evaluate it. ActualArgs contains the formal
/// arguments for the function.
/// Evaluate a call to function F, returning true if successful, false if we
/// can't evaluate it. ActualArgs contains the formal arguments for the
/// function.
bool Evaluator::EvaluateFunction(Function *F, Constant *&RetVal,
const SmallVectorImpl<Constant*> &ActualArgs) {
// Check to see if this function is already executing (recursion). If so,
@ -2688,8 +2677,8 @@ bool Evaluator::EvaluateFunction(Function *F, Constant *&RetVal,
}
}
/// EvaluateStaticConstructor - Evaluate static constructors in the function, if
/// we can. Return true if we can, false otherwise.
/// Evaluate static constructors in the function, if we can. Return true if we
/// can, false otherwise.
static bool EvaluateStaticConstructor(Function *F, const DataLayout &DL,
const TargetLibraryInfo *TLI) {
// Call the function.
@ -2752,7 +2741,7 @@ static void setUsedInitializer(GlobalVariable &V,
}
namespace {
/// \brief An easy to access representation of llvm.used and llvm.compiler.used.
/// An easy to access representation of llvm.used and llvm.compiler.used.
class LLVMUsed {
SmallPtrSet<GlobalValue *, 8> Used;
SmallPtrSet<GlobalValue *, 8> CompilerUsed;
@ -2946,8 +2935,8 @@ static Function *FindCXAAtExit(Module &M, TargetLibraryInfo *TLI) {
return Fn;
}
/// cxxDtorIsEmpty - Returns whether the given function is an empty C++
/// destructor and can therefore be eliminated.
/// Returns whether the given function is an empty C++ destructor and can
/// therefore be eliminated.
/// Note that we assume that other optimization passes have already simplified
/// the code so we only look for a function with a single basic block, where
/// the only allowed instructions are 'ret', 'call' to an empty C++ dtor and