[flang][acc] Implement MappableType's generatePrivateInit #148302
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The recipe body generation was moved from lowering into FIR's implementation of MappableType API. And now since all Fortran variable types implement this type, lowering of OpenACC was updated to use this API directly. No test changes were needed - all of the private, firstprivate, and recipe tests get the same body as before.
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@llvm/pr-subscribers-openacc @llvm/pr-subscribers-flang-fir-hlfir Author: Razvan Lupusoru (razvanlupusoru) ChangesThe recipe body generation was moved from lowering into FIR's implementation of MappableType API. And now since all Fortran variable types implement this type, lowering of OpenACC was updated to use this API directly. No test changes were needed - all of the private, firstprivate, and recipe tests get the same body as before. Full diff: https://github.com/llvm/llvm-project/pull/148302.diff 4 Files Affected:
diff --git a/flang/include/flang/Optimizer/OpenACC/FIROpenACCTypeInterfaces.h b/flang/include/flang/Optimizer/OpenACC/FIROpenACCTypeInterfaces.h
index 3e343f347e4ae..dcbf99c38af73 100644
--- a/flang/include/flang/Optimizer/OpenACC/FIROpenACCTypeInterfaces.h
+++ b/flang/include/flang/Optimizer/OpenACC/FIROpenACCTypeInterfaces.h
@@ -52,6 +52,14 @@ struct OpenACCMappableModel
mlir::acc::VariableTypeCategory getTypeCategory(mlir::Type type,
mlir::Value var) const;
+
+ mlir::Value
+ generatePrivateInit(mlir::Type type, mlir::OpBuilder &builder,
+ mlir::Location loc,
+ mlir::TypedValue<mlir::acc::MappableType> var,
+ llvm::StringRef varName,
+ mlir::ValueRange extents,
+ mlir::Value initVal) const;
};
} // namespace fir::acc
diff --git a/flang/lib/Lower/CMakeLists.txt b/flang/lib/Lower/CMakeLists.txt
index cd80aaf553869..8e20abf0e9f2d 100644
--- a/flang/lib/Lower/CMakeLists.txt
+++ b/flang/lib/Lower/CMakeLists.txt
@@ -51,6 +51,7 @@ add_flang_library(FortranLower
FIRDialect
FIRDialectSupport
FIRBuilder
+ FIROpenACCSupport
FIRSupport
FIRTransforms
HLFIRDialect
diff --git a/flang/lib/Lower/OpenACC.cpp b/flang/lib/Lower/OpenACC.cpp
index 00c9cbf0d2a8f..39e4444cde4e3 100644
--- a/flang/lib/Lower/OpenACC.cpp
+++ b/flang/lib/Lower/OpenACC.cpp
@@ -959,119 +959,6 @@ static mlir::Value getReductionInitValue(fir::FirOpBuilder &builder,
llvm::report_fatal_error("Unsupported OpenACC reduction type");
}
-template <typename RecipeOp>
-static void genPrivateLikeInitRegion(fir::FirOpBuilder &builder,
- RecipeOp recipe, mlir::Type argTy,
- mlir::Location loc,
- mlir::Value initValue) {
- mlir::Value retVal = recipe.getInitRegion().front().getArgument(0);
- mlir::Type unwrappedTy = fir::unwrapRefType(argTy);
-
- llvm::StringRef initName;
- if constexpr (std::is_same_v<RecipeOp, mlir::acc::ReductionRecipeOp>)
- initName = accReductionInitName;
- else
- initName = accPrivateInitName;
-
- auto getDeclareOpForType = [&](mlir::Type ty) -> hlfir::DeclareOp {
- auto alloca = builder.create<fir::AllocaOp>(loc, ty);
- return builder.create<hlfir::DeclareOp>(
- loc, alloca, initName, /*shape=*/nullptr, llvm::ArrayRef<mlir::Value>{},
- /*dummy_scope=*/nullptr, fir::FortranVariableFlagsAttr{});
- };
-
- if (fir::isa_trivial(unwrappedTy)) {
- auto declareOp = getDeclareOpForType(unwrappedTy);
- if (initValue) {
- auto convert = builder.createConvert(loc, unwrappedTy, initValue);
- builder.create<fir::StoreOp>(loc, convert, declareOp.getBase());
- }
- retVal = declareOp.getBase();
- } else if (auto seqTy =
- mlir::dyn_cast_or_null<fir::SequenceType>(unwrappedTy)) {
- if (fir::isa_trivial(seqTy.getEleTy())) {
- mlir::Value shape;
- llvm::SmallVector<mlir::Value> extents;
- if (seqTy.hasDynamicExtents()) {
- // Extents are passed as block arguments. First argument is the
- // original value.
- for (unsigned i = 1; i < recipe.getInitRegion().getArguments().size();
- ++i)
- extents.push_back(recipe.getInitRegion().getArgument(i));
- shape = builder.create<fir::ShapeOp>(loc, extents);
- } else {
- shape = genShapeOp(builder, seqTy, loc);
- }
- auto alloca = builder.create<fir::AllocaOp>(
- loc, seqTy, /*typeparams=*/mlir::ValueRange{}, extents);
- auto declareOp = builder.create<hlfir::DeclareOp>(
- loc, alloca, initName, shape, llvm::ArrayRef<mlir::Value>{},
- /*dummy_scope=*/nullptr, fir::FortranVariableFlagsAttr{});
-
- if (initValue) {
- mlir::Type idxTy = builder.getIndexType();
- mlir::Type refTy = fir::ReferenceType::get(seqTy.getEleTy());
- llvm::SmallVector<fir::DoLoopOp> loops;
- llvm::SmallVector<mlir::Value> ivs;
-
- if (seqTy.hasDynamicExtents()) {
- builder.create<hlfir::AssignOp>(loc, initValue, declareOp.getBase());
- } else {
- for (auto ext : seqTy.getShape()) {
- auto lb = builder.createIntegerConstant(loc, idxTy, 0);
- auto ub = builder.createIntegerConstant(loc, idxTy, ext - 1);
- auto step = builder.createIntegerConstant(loc, idxTy, 1);
- auto loop = builder.create<fir::DoLoopOp>(loc, lb, ub, step,
- /*unordered=*/false);
- builder.setInsertionPointToStart(loop.getBody());
- loops.push_back(loop);
- ivs.push_back(loop.getInductionVar());
- }
- auto coord = builder.create<fir::CoordinateOp>(
- loc, refTy, declareOp.getBase(), ivs);
- builder.create<fir::StoreOp>(loc, initValue, coord);
- builder.setInsertionPointAfter(loops[0]);
- }
- }
- retVal = declareOp.getBase();
- }
- } else if (auto boxTy =
- mlir::dyn_cast_or_null<fir::BaseBoxType>(unwrappedTy)) {
- mlir::Type innerTy = fir::unwrapRefType(boxTy.getEleTy());
- if (fir::isa_trivial(innerTy)) {
- retVal = getDeclareOpForType(unwrappedTy).getBase();
- } else if (mlir::isa<fir::SequenceType>(innerTy)) {
- fir::FirOpBuilder firBuilder{builder, recipe.getOperation()};
- hlfir::Entity source = hlfir::Entity{retVal};
- auto [temp, cleanup] = hlfir::createTempFromMold(loc, firBuilder, source);
- if (fir::isa_ref_type(argTy)) {
- // When the temp is created - it is not a reference - thus we can
- // end up with a type inconsistency. Therefore ensure storage is created
- // for it.
- retVal = getDeclareOpForType(unwrappedTy).getBase();
- mlir::Value storeDst = retVal;
- if (fir::unwrapRefType(retVal.getType()) != temp.getType()) {
- // `createTempFromMold` makes the unfortunate choice to lose the
- // `fir.heap` and `fir.ptr` types when wrapping with a box. Namely,
- // when wrapping a `fir.heap<fir.array>`, it will create instead a
- // `fir.box<fir.array>`. Cast here to deal with this inconsistency.
- storeDst = firBuilder.createConvert(
- loc, firBuilder.getRefType(temp.getType()), retVal);
- }
- builder.create<fir::StoreOp>(loc, temp, storeDst);
- } else {
- retVal = temp;
- }
- } else {
- TODO(loc, "Unsupported boxed type for OpenACC private-like recipe");
- }
- if (initValue) {
- builder.create<hlfir::AssignOp>(loc, initValue, retVal);
- }
- }
- builder.create<mlir::acc::YieldOp>(loc, retVal);
-}
-
template <typename RecipeOp>
static RecipeOp genRecipeOp(
fir::FirOpBuilder &builder, mlir::ModuleOp mod, llvm::StringRef recipeName,
@@ -1100,15 +987,35 @@ static RecipeOp genRecipeOp(
}
}
}
- builder.createBlock(&recipe.getInitRegion(), recipe.getInitRegion().end(),
- argsTy, argsLoc);
+ auto initBlock = builder.createBlock(
+ &recipe.getInitRegion(), recipe.getInitRegion().end(), argsTy, argsLoc);
builder.setInsertionPointToEnd(&recipe.getInitRegion().back());
mlir::Value initValue;
if constexpr (std::is_same_v<RecipeOp, mlir::acc::ReductionRecipeOp>) {
assert(op != mlir::acc::ReductionOperator::AccNone);
initValue = getReductionInitValue(builder, loc, fir::unwrapRefType(ty), op);
}
- genPrivateLikeInitRegion<RecipeOp>(builder, recipe, ty, loc, initValue);
+
+ // Since we reuse the same recipe for all variables of the same type - we
+ // cannot use the actual variable name. Thus use a temporary name.
+ llvm::StringRef initName;
+ if constexpr (std::is_same_v<RecipeOp, mlir::acc::ReductionRecipeOp>)
+ initName = accReductionInitName;
+ else
+ initName = accPrivateInitName;
+
+ auto mappableTy = mlir::dyn_cast<mlir::acc::MappableType>(ty);
+ assert(mappableTy &&
+ "Expected that all variable types are considered mappable");
+ auto retVal = mappableTy.generatePrivateInit(
+ builder, loc,
+ mlir::cast<mlir::TypedValue<mlir::acc::MappableType>>(
+ initBlock->getArgument(0)),
+ initName,
+ initBlock->getArguments().take_back(initBlock->getArguments().size() - 1),
+ initValue);
+ builder.create<mlir::acc::YieldOp>(loc, retVal ? retVal
+ : initBlock->getArgument(0));
return recipe;
}
diff --git a/flang/lib/Optimizer/OpenACC/FIROpenACCTypeInterfaces.cpp b/flang/lib/Optimizer/OpenACC/FIROpenACCTypeInterfaces.cpp
index 0767733f53728..db3172b186ddf 100644
--- a/flang/lib/Optimizer/OpenACC/FIROpenACCTypeInterfaces.cpp
+++ b/flang/lib/Optimizer/OpenACC/FIROpenACCTypeInterfaces.cpp
@@ -25,6 +25,7 @@
#include "mlir/Dialect/OpenACC/OpenACC.h"
#include "mlir/IR/BuiltinOps.h"
#include "mlir/Support/LLVM.h"
+#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/TypeSwitch.h"
namespace fir::acc {
@@ -525,4 +526,143 @@ OpenACCPointerLikeModel<fir::LLVMPointerType>::getPointeeTypeCategory(
return categorizePointee(pointer, varPtr, varType);
}
+static fir::ShapeOp genShapeOp(mlir::OpBuilder &builder,
+ fir::SequenceType seqTy, mlir::Location loc) {
+ llvm::SmallVector<mlir::Value> extents;
+ mlir::Type idxTy = builder.getIndexType();
+ for (auto extent : seqTy.getShape())
+ extents.push_back(builder.create<mlir::arith::ConstantOp>(
+ loc, idxTy, builder.getIntegerAttr(idxTy, extent)));
+ return builder.create<fir::ShapeOp>(loc, extents);
+}
+
+template <typename Ty>
+mlir::Value OpenACCMappableModel<Ty>::generatePrivateInit(
+ mlir::Type type, mlir::OpBuilder &builder, mlir::Location loc,
+ mlir::TypedValue<mlir::acc::MappableType> var, llvm::StringRef varName,
+ mlir::ValueRange extents,
+ mlir::Value initVal) const {
+ mlir::Value retVal;
+ mlir::Type unwrappedTy = fir::unwrapRefType(type);
+ mlir::ModuleOp mod = builder.getInsertionBlock()
+ ->getParent()
+ ->getParentOfType<mlir::ModuleOp>();
+ fir::FirOpBuilder firBuilder(builder, mod);
+
+ auto getDeclareOpForType = [&](mlir::Type ty) -> hlfir::DeclareOp {
+ auto alloca = firBuilder.create<fir::AllocaOp>(loc, ty);
+ return firBuilder.create<hlfir::DeclareOp>(
+ loc, alloca, varName, /*shape=*/nullptr, llvm::ArrayRef<mlir::Value>{},
+ /*dummy_scope=*/nullptr, fir::FortranVariableFlagsAttr{});
+ };
+
+ if (fir::isa_trivial(unwrappedTy)) {
+ auto declareOp = getDeclareOpForType(unwrappedTy);
+ if (initVal) {
+ auto convert = firBuilder.createConvert(loc, unwrappedTy, initVal);
+ firBuilder.create<fir::StoreOp>(loc, convert, declareOp.getBase());
+ }
+ retVal = declareOp.getBase();
+ } else if (auto seqTy =
+ mlir::dyn_cast_or_null<fir::SequenceType>(unwrappedTy)) {
+ if (fir::isa_trivial(seqTy.getEleTy())) {
+ mlir::Value shape;
+ if (seqTy.hasDynamicExtents()) {
+ shape = firBuilder.create<fir::ShapeOp>(loc, llvm::to_vector(extents));
+ } else {
+ shape = genShapeOp(firBuilder, seqTy, loc);
+ }
+ auto alloca = firBuilder.create<fir::AllocaOp>(
+ loc, seqTy, /*typeparams=*/mlir::ValueRange{}, extents);
+ auto declareOp = firBuilder.create<hlfir::DeclareOp>(
+ loc, alloca, varName, shape, llvm::ArrayRef<mlir::Value>{},
+ /*dummy_scope=*/nullptr, fir::FortranVariableFlagsAttr{});
+
+ if (initVal) {
+ mlir::Type idxTy = firBuilder.getIndexType();
+ mlir::Type refTy = fir::ReferenceType::get(seqTy.getEleTy());
+ llvm::SmallVector<fir::DoLoopOp> loops;
+ llvm::SmallVector<mlir::Value> ivs;
+
+ if (seqTy.hasDynamicExtents()) {
+ firBuilder.create<hlfir::AssignOp>(loc, initVal, declareOp.getBase());
+ } else {
+ for (auto ext : seqTy.getShape()) {
+ auto lb = firBuilder.createIntegerConstant(loc, idxTy, 0);
+ auto ub = firBuilder.createIntegerConstant(loc, idxTy, ext - 1);
+ auto step = firBuilder.createIntegerConstant(loc, idxTy, 1);
+ auto loop = firBuilder.create<fir::DoLoopOp>(loc, lb, ub, step,
+ /*unordered=*/false);
+ firBuilder.setInsertionPointToStart(loop.getBody());
+ loops.push_back(loop);
+ ivs.push_back(loop.getInductionVar());
+ }
+ auto coord = firBuilder.create<fir::CoordinateOp>(
+ loc, refTy, declareOp.getBase(), ivs);
+ firBuilder.create<fir::StoreOp>(loc, initVal, coord);
+ firBuilder.setInsertionPointAfter(loops[0]);
+ }
+ }
+ retVal = declareOp.getBase();
+ }
+ } else if (auto boxTy =
+ mlir::dyn_cast_or_null<fir::BaseBoxType>(unwrappedTy)) {
+ mlir::Type innerTy = fir::unwrapRefType(boxTy.getEleTy());
+ if (fir::isa_trivial(innerTy)) {
+ retVal = getDeclareOpForType(unwrappedTy).getBase();
+ } else if (mlir::isa<fir::SequenceType>(innerTy)) {
+ hlfir::Entity source = hlfir::Entity{var};
+ auto [temp, cleanup] = hlfir::createTempFromMold(loc, firBuilder, source);
+ if (fir::isa_ref_type(type)) {
+ // When the temp is created - it is not a reference - thus we can
+ // end up with a type inconsistency. Therefore ensure storage is created
+ // for it.
+ retVal = getDeclareOpForType(unwrappedTy).getBase();
+ mlir::Value storeDst = retVal;
+ if (fir::unwrapRefType(retVal.getType()) != temp.getType()) {
+ // `createTempFromMold` makes the unfortunate choice to lose the
+ // `fir.heap` and `fir.ptr` types when wrapping with a box. Namely,
+ // when wrapping a `fir.heap<fir.array>`, it will create instead a
+ // `fir.box<fir.array>`. Cast here to deal with this inconsistency.
+ storeDst = firBuilder.createConvert(
+ loc, firBuilder.getRefType(temp.getType()), retVal);
+ }
+ builder.create<fir::StoreOp>(loc, temp, storeDst);
+ } else {
+ retVal = temp;
+ }
+ } else {
+ TODO(loc, "Unsupported boxed type for OpenACC private-like recipe");
+ }
+ if (initVal) {
+ builder.create<hlfir::AssignOp>(loc, initVal, retVal);
+ }
+ }
+ return retVal;
+}
+
+template mlir::Value
+OpenACCMappableModel<fir::BaseBoxType>::generatePrivateInit(
+ mlir::Type type, mlir::OpBuilder &builder, mlir::Location loc,
+ mlir::TypedValue<mlir::acc::MappableType> var, llvm::StringRef varName,
+ mlir::ValueRange extents, mlir::Value initVal) const;
+
+template mlir::Value
+OpenACCMappableModel<fir::ReferenceType>::generatePrivateInit(
+ mlir::Type type, mlir::OpBuilder &builder, mlir::Location loc,
+ mlir::TypedValue<mlir::acc::MappableType> var, llvm::StringRef varName,
+ mlir::ValueRange extents, mlir::Value initVal) const;
+
+template mlir::Value
+OpenACCMappableModel<fir::HeapType>::generatePrivateInit(
+ mlir::Type type, mlir::OpBuilder &builder, mlir::Location loc,
+ mlir::TypedValue<mlir::acc::MappableType> var, llvm::StringRef varName,
+ mlir::ValueRange extents, mlir::Value initVal) const;
+
+template mlir::Value
+OpenACCMappableModel<fir::PointerType>::generatePrivateInit(
+ mlir::Type type, mlir::OpBuilder &builder, mlir::Location loc,
+ mlir::TypedValue<mlir::acc::MappableType> var, llvm::StringRef varName,
+ mlir::ValueRange extents, mlir::Value initVal) const;
+
} // namespace fir::acc
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✅ With the latest revision this PR passed the C/C++ code formatter. |
clementval
approved these changes
Jul 11, 2025
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The recipe body generation was moved from lowering into FIR's implementation of MappableType API. And now since all Fortran variable types implement this type, lowering of OpenACC was updated to use this API directly. No test changes were needed - all of the private, firstprivate, and recipe tests get the same body as before.