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[OpenMP] set_bits iterator yields unsigned elements, no reference (NFC).

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BitVector::set_bits() returns an iterator range yielding unsinged
elements, which always will be copied while const & gives the impression
that there will be no copy. Newer version of clang complain:

    warning: loop variable 'SetBitsIt' is always a copy because the range of type 'iterator_range<llvm::BitVector::const_set_bits_iterator>' (aka 'iterator_range<const_set_bits_iterator_impl<llvm::BitVector> >') does not return a reference [-Wrange-loop-analysis]

Reviewers: jdoerfert, rnk

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D77010
This commit is contained in:
Florian Hahn 2020-03-29 17:05:29 +01:00
parent 28f67bd5c5
commit 99913ef3d1
1 changed files with 8 additions and 8 deletions
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16
llvm/lib/Frontend/OpenMP/OMPContext.cpp
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@ -79,8 +79,8 @@ OMPContext::OMPContext(bool IsDeviceCompilation, Triple TargetTriple) {
LLVM_DEBUG({
dbgs() << "[" << DEBUG_TYPE
<< "] New OpenMP context with the following properties:\n";
for (const auto &SetBitsIt : ActiveTraits.set_bits()) {
TraitProperty Property = TraitProperty(SetBitsIt);
for (unsigned Bit : ActiveTraits.set_bits()) {
TraitProperty Property = TraitProperty(Bit);
dbgs() << "\t " << getOpenMPContextTraitPropertyFullName(Property)
<< "\n";
}
@ -127,8 +127,8 @@ static bool isStrictSubset(const VariantMatchInfo &VMI0,
// relation is not required to be strict.
if (VMI0.RequiredTraits.count() >= VMI1.RequiredTraits.count())
return false;
for (const auto &SetBitsIt : VMI0.RequiredTraits.set_bits())
if (!VMI1.RequiredTraits.test(SetBitsIt))
for (unsigned Bit : VMI0.RequiredTraits.set_bits())
if (!VMI1.RequiredTraits.test(Bit))
return false;
if (!isSubset<TraitProperty>(VMI0.ConstructTraits, VMI1.ConstructTraits))
return false;
@ -139,8 +139,8 @@ static int isVariantApplicableInContextHelper(
const VariantMatchInfo &VMI, const OMPContext &Ctx,
SmallVectorImpl<unsigned> *ConstructMatches) {
for (const auto &SetBitsIt : VMI.RequiredTraits.set_bits()) {
TraitProperty Property = TraitProperty(SetBitsIt);
for (unsigned Bit : VMI.RequiredTraits.set_bits()) {
TraitProperty Property = TraitProperty(Bit);
bool IsActiveTrait = Ctx.ActiveTraits.test(unsigned(Property));
if (!IsActiveTrait) {
@ -191,8 +191,8 @@ static APInt getVariantMatchScore(const VariantMatchInfo &VMI,
APInt Score(64, 1);
unsigned NoConstructTraits = VMI.ConstructTraits.size();
for (const auto &SetBitsIt : VMI.RequiredTraits.set_bits()) {
TraitProperty Property = TraitProperty(SetBitsIt);
for (unsigned Bit : VMI.RequiredTraits.set_bits()) {
TraitProperty Property = TraitProperty(Bit);
// If there is a user score attached, use it.
if (VMI.ScoreMap.count(Property)) {
const APInt &UserScore = VMI.ScoreMap.lookup(Property);