================
@@ -1698,6 +1701,64 @@ void OpenMPIRBuilder::createTaskyield(const
LocationDescription &Loc) {
emitTaskyieldImpl(Loc);
}
+// Processes the dependencies in Dependencies and does the following
+// - Allocates space on the stack of an array of DependInfo objects
+// - Populates each DependInfo object with relevant information of
+// the corresponding dependence.
+// - All code is inserted in the entry block of the current function.
+static Value *
+emitDepArray(OpenMPIRBuilder &OMPBuilder,
+ SmallVector<OpenMPIRBuilder::DependData> &Dependencies) {
+ // Early return if we have no dependencies to process
+ if (!Dependencies.size())
+ return nullptr;
+
+ IRBuilderBase &Builder = OMPBuilder.Builder;
+ Type *DependInfo = OMPBuilder.DependInfo;
+ Module &M = OMPBuilder.M;
+
+ Value *DepArray = nullptr;
+ if (Dependencies.size()) {
+ OpenMPIRBuilder::InsertPointTy OldIP = Builder.saveIP();
+ Builder.SetInsertPoint(
+ &OldIP.getBlock()->getParent()->getEntryBlock().back());
+
+ Type *DepArrayTy = ArrayType::get(DependInfo, Dependencies.size());
+ DepArray = Builder.CreateAlloca(DepArrayTy, nullptr, ".dep.arr.addr");
+
+ unsigned P = 0;
+ for (const OpenMPIRBuilder::DependData &Dep : Dependencies) {
+ Value *Base =
+ Builder.CreateConstInBoundsGEP2_64(DepArrayTy, DepArray, 0, P);
+ // Store the pointer to the variable
+ Value *Addr = Builder.CreateStructGEP(
+ DependInfo, Base,
+ static_cast<unsigned int>(RTLDependInfoFields::BaseAddr));
+ Value *DepValPtr =
+ Builder.CreatePtrToInt(Dep.DepVal, Builder.getInt64Ty());
+ Builder.CreateStore(DepValPtr, Addr);
+ // Store the size of the variable
+ Value *Size = Builder.CreateStructGEP(
+ DependInfo, Base,
+ static_cast<unsigned int>(RTLDependInfoFields::Len));
+ Builder.CreateStore(Builder.getInt64(M.getDataLayout().getTypeStoreSize(
+ Dep.DepValueType)),
+ Size);
+ // Store the dependency kind
+ Value *Flags = Builder.CreateStructGEP(
+ DependInfo, Base,
+ static_cast<unsigned int>(RTLDependInfoFields::Flags));
+ Builder.CreateStore(
+ ConstantInt::get(Builder.getInt8Ty(),
+ static_cast<unsigned int>(Dep.DepKind)),
+ Flags);
----------------
Meinersbur wrote:
Consider adding a comment with a mock source of what is generate here:
```
DepArray[P].BaseAddre = ...
```
https://github.com/llvm/llvm-project/pull/93977
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