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remove function names from comments; NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230766 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -392,10 +392,9 @@ bool TailCallElim::runTRE(Function &F) {
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SmallVector<PHINode*, 8> ArgumentPHIs;
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bool MadeChange = false;
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// CanTRETailMarkedCall - If false, we cannot perform TRE on tail calls
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// marked with the 'tail' attribute, because doing so would cause the stack
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// size to increase (real TRE would deallocate variable sized allocas, TRE
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// doesn't).
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// If false, we cannot perform TRE on tail calls marked with the 'tail'
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// attribute, because doing so would cause the stack size to increase (real
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// TRE would deallocate variable sized allocas, TRE doesn't).
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bool CanTRETailMarkedCall = CanTRE(F);
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// Change any tail recursive calls to loops.
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@ -445,7 +444,7 @@ bool TailCallElim::runTRE(Function &F) {
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}
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/// CanMoveAboveCall - Return true if it is safe to move the specified
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/// Return true if it is safe to move the specified
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/// instruction from after the call to before the call, assuming that all
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/// instructions between the call and this instruction are movable.
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///
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@ -480,13 +479,11 @@ bool TailCallElim::CanMoveAboveCall(Instruction *I, CallInst *CI) {
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return true;
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}
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// isDynamicConstant - Return true if the specified value is the same when the
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// return would exit as it was when the initial iteration of the recursive
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// function was executed.
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//
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// We currently handle static constants and arguments that are not modified as
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// part of the recursion.
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//
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/// Return true if the specified value is the same when the return would exit
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/// as it was when the initial iteration of the recursive function was executed.
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///
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/// We currently handle static constants and arguments that are not modified as
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/// part of the recursion.
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static bool isDynamicConstant(Value *V, CallInst *CI, ReturnInst *RI) {
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if (isa<Constant>(V)) return true; // Static constants are always dyn consts
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@ -518,10 +515,9 @@ static bool isDynamicConstant(Value *V, CallInst *CI, ReturnInst *RI) {
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return false;
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}
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// getCommonReturnValue - Check to see if the function containing the specified
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// tail call consistently returns the same runtime-constant value at all exit
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// points except for IgnoreRI. If so, return the returned value.
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//
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/// Check to see if the function containing the specified tail call consistently
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/// returns the same runtime-constant value at all exit points except for
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/// IgnoreRI. If so, return the returned value.
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static Value *getCommonReturnValue(ReturnInst *IgnoreRI, CallInst *CI) {
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Function *F = CI->getParent()->getParent();
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Value *ReturnedValue = nullptr;
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@ -545,10 +541,9 @@ static Value *getCommonReturnValue(ReturnInst *IgnoreRI, CallInst *CI) {
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return ReturnedValue;
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}
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/// CanTransformAccumulatorRecursion - If the specified instruction can be
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/// transformed using accumulator recursion elimination, return the constant
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/// which is the start of the accumulator value. Otherwise return null.
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///
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/// If the specified instruction can be transformed using accumulator recursion
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/// elimination, return the constant which is the start of the accumulator
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/// value. Otherwise return null.
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Value *TailCallElim::CanTransformAccumulatorRecursion(Instruction *I,
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CallInst *CI) {
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if (!I->isAssociative() || !I->isCommutative()) return nullptr;
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