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Revert "[Attributor] Disable simplification AAs if a callback is present" 

This reverts commit cbb709e251 as it
breaks the tests, which was not supposed to happen. Investigating now.
This commit is contained in:
Johannes Doerfert 2021-07-27 18:06:33 -05:00
parent fd520e75f1
commit aa27430a62
2 changed files with 12 additions and 43 deletions
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5
llvm/include/llvm/Transforms/IPO/Attributor.h
View File

@ -1563,11 +1563,6 @@ struct Attributor {
SimplificationCallbacks[IRP].emplace_back(CB);
}
/// Return true if there is a simplification callback for \p IRP.
bool hasSimplificationCallback(const IRPosition &IRP) {
return SimplificationCallbacks.count(IRP);
}
private:
/// The vector with all simplification callbacks registered by outside AAs.
DenseMap<IRPosition, SmallVector<SimplifictionCallbackTy, 1>>

50
llvm/lib/Transforms/IPO/AttributorAttributes.cpp
View File

@ -5067,8 +5067,6 @@ struct AAValueSimplifyImpl : AAValueSimplify {
void initialize(Attributor &A) override {
if (getAssociatedValue().getType()->isVoidTy())
indicatePessimisticFixpoint();
if (A.hasSimplificationCallback(getIRPosition()))
indicatePessimisticFixpoint();
}
/// See AbstractAttribute::getAsStr().
@ -5402,7 +5400,9 @@ struct AAValueSimplifyFloating : AAValueSimplifyImpl {
/// See AbstractAttribute::initialize(...).
void initialize(Attributor &A) override {
AAValueSimplifyImpl::initialize(A);
// FIXME: This might have exposed a SCC iterator update bug in the old PM.
// Needs investigation.
// AAValueSimplifyImpl::initialize(A);
Value &V = getAnchorValue();
// TODO: add other stuffs
@ -5639,7 +5639,6 @@ struct AAValueSimplifyCallSiteReturned : AAValueSimplifyImpl {
: AAValueSimplifyImpl(IRP, A) {}
void initialize(Attributor &A) override {
AAValueSimplifyImpl::initialize(A);
if (!getAssociatedFunction())
indicatePessimisticFixpoint();
}
@ -7889,20 +7888,6 @@ struct AAValueConstantRangeImpl : AAValueConstantRange {
AAValueConstantRangeImpl(const IRPosition &IRP, Attributor &A)
: AAValueConstantRange(IRP, A) {}
/// See AbstractAttribute::initialize(..).
void initialize(Attributor &A) override {
if (A.hasSimplificationCallback(getIRPosition())) {
indicatePessimisticFixpoint();
return;
}
// Intersect a range given by SCEV.
intersectKnown(getConstantRangeFromSCEV(A, getCtxI()));
// Intersect a range given by LVI.
intersectKnown(getConstantRangeFromLVI(A, getCtxI()));
}
/// See AbstractAttribute::getAsStr().
const std::string getAsStr() const override {
std::string Str;
@ -8034,6 +8019,15 @@ struct AAValueConstantRangeImpl : AAValueConstantRange {
return getAssumed().intersectWith(SCEVR).intersectWith(LVIR);
}
/// See AbstractAttribute::initialize(..).
void initialize(Attributor &A) override {
// Intersect a range given by SCEV.
intersectKnown(getConstantRangeFromSCEV(A, getCtxI()));
// Intersect a range given by LVI.
intersectKnown(getConstantRangeFromLVI(A, getCtxI()));
}
/// Helper function to create MDNode for range metadata.
static MDNode *
getMDNodeForConstantRange(Type *Ty, LLVMContext &Ctx,
@ -8163,9 +8157,6 @@ struct AAValueConstantRangeFloating : AAValueConstantRangeImpl {
/// See AbstractAttribute::initialize(...).
void initialize(Attributor &A) override {
AAValueConstantRangeImpl::initialize(A);
if (isAtFixpoint())
return;
Value &V = getAssociatedValue();
if (auto *C = dyn_cast<ConstantInt>(&V)) {
@ -8186,7 +8177,6 @@ struct AAValueConstantRangeFloating : AAValueConstantRangeImpl {
if (isa<BinaryOperator>(&V) || isa<CmpInst>(&V) || isa<CastInst>(&V))
return;
// If it is a load instruction with range metadata, use it.
if (LoadInst *LI = dyn_cast<LoadInst>(&V))
if (auto *RangeMD = LI->getMetadata(LLVMContext::MD_range)) {
@ -8514,14 +8504,6 @@ struct AAPotentialValuesImpl : AAPotentialValues {
AAPotentialValuesImpl(const IRPosition &IRP, Attributor &A)
: AAPotentialValues(IRP, A) {}
/// See AbstractAttribute::initialize(..).
void initialize(Attributor &A) override {
if (A.hasSimplificationCallback(getIRPosition()))
indicatePessimisticFixpoint();
else
AAPotentialValues::initialize(A);
}
/// See AbstractAttribute::getAsStr().
const std::string getAsStr() const override {
std::string Str;
@ -8579,10 +8561,6 @@ struct AAPotentialValuesFloating : AAPotentialValuesImpl {
/// See AbstractAttribute::initialize(..).
void initialize(Attributor &A) override {
AAPotentialValuesImpl::initialize(A);
if (isAtFixpoint())
return;
Value &V = getAssociatedValue();
if (auto *C = dyn_cast<ConstantInt>(&V)) {
@ -9115,10 +9093,6 @@ struct AAPotentialValuesCallSiteArgument : AAPotentialValuesFloating {
/// See AbstractAttribute::initialize(..).
void initialize(Attributor &A) override {
AAPotentialValuesImpl::initialize(A);
if (isAtFixpoint())
return;
Value &V = getAssociatedValue();
if (auto *C = dyn_cast<ConstantInt>(&V)) {