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-rw-r--r--contrib/llvm/lib/IR/Function.cpp131
1 files changed, 94 insertions, 37 deletions
diff --git a/contrib/llvm/lib/IR/Function.cpp b/contrib/llvm/lib/IR/Function.cpp
index e8a2402b3d95..de59b26ec92a 100644
--- a/contrib/llvm/lib/IR/Function.cpp
+++ b/contrib/llvm/lib/IR/Function.cpp
@@ -18,13 +18,13 @@
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/CodeGen/ValueTypes.h"
+#include "llvm/IR/CallSite.h"
#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/InstIterator.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/LeakDetector.h"
#include "llvm/IR/Module.h"
-#include "llvm/Support/CallSite.h"
-#include "llvm/Support/InstIterator.h"
-#include "llvm/Support/LeakDetector.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/RWMutex.h"
#include "llvm/Support/StringPool.h"
@@ -44,7 +44,7 @@ void Argument::anchor() { }
Argument::Argument(Type *Ty, const Twine &Name, Function *Par)
: Value(Ty, Value::ArgumentVal) {
- Parent = 0;
+ Parent = nullptr;
// Make sure that we get added to a function
LeakDetector::addGarbageObject(this);
@@ -76,6 +76,20 @@ unsigned Argument::getArgNo() const {
return ArgIdx;
}
+/// hasNonNullAttr - Return true if this argument has the nonnull attribute on
+/// it in its containing function. Also returns true if at least one byte is
+/// known to be dereferenceable and the pointer is in addrspace(0).
+bool Argument::hasNonNullAttr() const {
+ if (!getType()->isPointerTy()) return false;
+ if (getParent()->getAttributes().
+ hasAttribute(getArgNo()+1, Attribute::NonNull))
+ return true;
+ else if (getDereferenceableBytes() > 0 &&
+ getType()->getPointerAddressSpace() == 0)
+ return true;
+ return false;
+}
+
/// hasByValAttr - Return true if this argument has the byval attribute on it
/// in its containing function.
bool Argument::hasByValAttr() const {
@@ -84,12 +98,33 @@ bool Argument::hasByValAttr() const {
hasAttribute(getArgNo()+1, Attribute::ByVal);
}
+/// \brief Return true if this argument has the inalloca attribute on it in
+/// its containing function.
+bool Argument::hasInAllocaAttr() const {
+ if (!getType()->isPointerTy()) return false;
+ return getParent()->getAttributes().
+ hasAttribute(getArgNo()+1, Attribute::InAlloca);
+}
+
+bool Argument::hasByValOrInAllocaAttr() const {
+ if (!getType()->isPointerTy()) return false;
+ AttributeSet Attrs = getParent()->getAttributes();
+ return Attrs.hasAttribute(getArgNo() + 1, Attribute::ByVal) ||
+ Attrs.hasAttribute(getArgNo() + 1, Attribute::InAlloca);
+}
+
unsigned Argument::getParamAlignment() const {
assert(getType()->isPointerTy() && "Only pointers have alignments");
return getParent()->getParamAlignment(getArgNo()+1);
}
+uint64_t Argument::getDereferenceableBytes() const {
+ assert(getType()->isPointerTy() &&
+ "Only pointers have dereferenceable bytes");
+ return getParent()->getDereferenceableBytes(getArgNo()+1);
+}
+
/// hasNestAttr - Return true if this argument has the nest attribute on
/// it in its containing function.
bool Argument::hasNestAttr() const {
@@ -194,8 +229,8 @@ void Function::eraseFromParent() {
Function::Function(FunctionType *Ty, LinkageTypes Linkage,
const Twine &name, Module *ParentModule)
- : GlobalValue(PointerType::getUnqual(Ty),
- Value::FunctionVal, 0, 0, Linkage, name) {
+ : GlobalObject(PointerType::getUnqual(Ty),
+ Value::FunctionVal, nullptr, 0, Linkage, name) {
assert(FunctionType::isValidReturnType(getReturnType()) &&
"invalid return type");
SymTab = new ValueSymbolTable();
@@ -278,7 +313,7 @@ void Function::dropAllReferences() {
BasicBlocks.begin()->eraseFromParent();
// Prefix data is stored in a side table.
- setPrefixData(0);
+ setPrefixData(nullptr);
}
void Function::addAttribute(unsigned i, Attribute::AttrKind attr) {
@@ -333,10 +368,10 @@ void Function::clearGC() {
GCNames->erase(this);
if (GCNames->empty()) {
delete GCNames;
- GCNames = 0;
+ GCNames = nullptr;
if (GCNamePool->empty()) {
delete GCNamePool;
- GCNamePool = 0;
+ GCNamePool = nullptr;
}
}
}
@@ -346,7 +381,7 @@ void Function::clearGC() {
/// create a Function) from the Function Src to this one.
void Function::copyAttributesFrom(const GlobalValue *Src) {
assert(isa<Function>(Src) && "Expected a Function!");
- GlobalValue::copyAttributesFrom(Src);
+ GlobalObject::copyAttributesFrom(Src);
const Function *SrcF = cast<Function>(Src);
setCallingConv(SrcF->getCallingConv());
setAttributes(SrcF->getAttributes());
@@ -357,7 +392,7 @@ void Function::copyAttributesFrom(const GlobalValue *Src) {
if (SrcF->hasPrefixData())
setPrefixData(SrcF->getPrefixData());
else
- setPrefixData(0);
+ setPrefixData(nullptr);
}
/// getIntrinsicID - This method returns the ID number of the specified
@@ -451,11 +486,12 @@ enum IIT_Info {
IIT_STRUCT3 = 20,
IIT_STRUCT4 = 21,
IIT_STRUCT5 = 22,
- IIT_EXTEND_VEC_ARG = 23,
- IIT_TRUNC_VEC_ARG = 24,
+ IIT_EXTEND_ARG = 23,
+ IIT_TRUNC_ARG = 24,
IIT_ANYPTR = 25,
IIT_V1 = 26,
- IIT_VARARG = 27
+ IIT_VARARG = 27,
+ IIT_HALF_VEC_ARG = 28
};
@@ -541,15 +577,21 @@ static void DecodeIITType(unsigned &NextElt, ArrayRef<unsigned char> Infos,
OutputTable.push_back(IITDescriptor::get(IITDescriptor::Argument, ArgInfo));
return;
}
- case IIT_EXTEND_VEC_ARG: {
+ case IIT_EXTEND_ARG: {
+ unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::ExtendArgument,
+ ArgInfo));
+ return;
+ }
+ case IIT_TRUNC_ARG: {
unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
- OutputTable.push_back(IITDescriptor::get(IITDescriptor::ExtendVecArgument,
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::TruncArgument,
ArgInfo));
return;
}
- case IIT_TRUNC_VEC_ARG: {
+ case IIT_HALF_VEC_ARG: {
unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
- OutputTable.push_back(IITDescriptor::get(IITDescriptor::TruncVecArgument,
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::HalfVecArgument,
ArgInfo));
return;
}
@@ -641,12 +683,24 @@ static Type *DecodeFixedType(ArrayRef<Intrinsic::IITDescriptor> &Infos,
case IITDescriptor::Argument:
return Tys[D.getArgumentNumber()];
- case IITDescriptor::ExtendVecArgument:
- return VectorType::getExtendedElementVectorType(cast<VectorType>(
- Tys[D.getArgumentNumber()]));
+ case IITDescriptor::ExtendArgument: {
+ Type *Ty = Tys[D.getArgumentNumber()];
+ if (VectorType *VTy = dyn_cast<VectorType>(Ty))
+ return VectorType::getExtendedElementVectorType(VTy);
- case IITDescriptor::TruncVecArgument:
- return VectorType::getTruncatedElementVectorType(cast<VectorType>(
+ return IntegerType::get(Context, 2 * cast<IntegerType>(Ty)->getBitWidth());
+ }
+ case IITDescriptor::TruncArgument: {
+ Type *Ty = Tys[D.getArgumentNumber()];
+ if (VectorType *VTy = dyn_cast<VectorType>(Ty))
+ return VectorType::getTruncatedElementVectorType(VTy);
+
+ IntegerType *ITy = cast<IntegerType>(Ty);
+ assert(ITy->getBitWidth() % 2 == 0);
+ return IntegerType::get(Context, ITy->getBitWidth() / 2);
+ }
+ case IITDescriptor::HalfVecArgument:
+ return VectorType::getHalfElementsVectorType(cast<VectorType>(
Tys[D.getArgumentNumber()]));
}
llvm_unreachable("unhandled");
@@ -693,18 +747,23 @@ Function *Intrinsic::getDeclaration(Module *M, ID id, ArrayRef<Type*> Tys) {
#include "llvm/IR/Intrinsics.gen"
#undef GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN
+// This defines the "Intrinsic::getIntrinsicForMSBuiltin()" method.
+#define GET_LLVM_INTRINSIC_FOR_MS_BUILTIN
+#include "llvm/IR/Intrinsics.gen"
+#undef GET_LLVM_INTRINSIC_FOR_MS_BUILTIN
+
/// hasAddressTaken - returns true if there are any uses of this function
/// other than direct calls or invokes to it.
bool Function::hasAddressTaken(const User* *PutOffender) const {
- for (Value::const_use_iterator I = use_begin(), E = use_end(); I != E; ++I) {
- const User *U = *I;
- if (isa<BlockAddress>(U))
+ for (const Use &U : uses()) {
+ const User *FU = U.getUser();
+ if (isa<BlockAddress>(FU))
continue;
- if (!isa<CallInst>(U) && !isa<InvokeInst>(U))
- return PutOffender ? (*PutOffender = U, true) : true;
- ImmutableCallSite CS(cast<Instruction>(U));
- if (!CS.isCallee(I))
- return PutOffender ? (*PutOffender = U, true) : true;
+ if (!isa<CallInst>(FU) && !isa<InvokeInst>(FU))
+ return PutOffender ? (*PutOffender = FU, true) : true;
+ ImmutableCallSite CS(cast<Instruction>(FU));
+ if (!CS.isCallee(&U))
+ return PutOffender ? (*PutOffender = FU, true) : true;
}
return false;
}
@@ -716,8 +775,8 @@ bool Function::isDefTriviallyDead() const {
return false;
// Check if the function is used by anything other than a blockaddress.
- for (Value::const_use_iterator I = use_begin(), E = use_end(); I != E; ++I)
- if (!isa<BlockAddress>(*I))
+ for (const User *U : users())
+ if (!isa<BlockAddress>(U))
return false;
return true;
@@ -728,10 +787,8 @@ bool Function::isDefTriviallyDead() const {
bool Function::callsFunctionThatReturnsTwice() const {
for (const_inst_iterator
I = inst_begin(this), E = inst_end(this); I != E; ++I) {
- const CallInst* callInst = dyn_cast<CallInst>(&*I);
- if (!callInst)
- continue;
- if (callInst->canReturnTwice())
+ ImmutableCallSite CS(&*I);
+ if (CS && CS.hasFnAttr(Attribute::ReturnsTwice))
return true;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-25 05:32:25 +0000