[llvm-branch-commits] [flang] [MLIR][OpenMP] Add Lowering support for OpenMP custom mappers in map clause (PR #121001)
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Mon Dec 23 13:18:41 PST 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-flang-fir-hlfir
Author: Akash Banerjee (TIFitis)
<details>
<summary>Changes</summary>
Add Lowering support for OpenMP mapper field in mapInfoOp.
Depends on #<!-- -->120994.
---
Full diff: https://github.com/llvm/llvm-project/pull/121001.diff
4 Files Affected:
- (modified) flang/lib/Lower/OpenMP/ClauseProcessor.cpp (+27-5)
- (modified) flang/lib/Lower/OpenMP/ClauseProcessor.h (+2-1)
- (removed) flang/test/Lower/OpenMP/Todo/map-mapper.f90 (-16)
- (added) flang/test/Lower/OpenMP/map-mapper.f90 (+23)
``````````diff
diff --git a/flang/lib/Lower/OpenMP/ClauseProcessor.cpp b/flang/lib/Lower/OpenMP/ClauseProcessor.cpp
index 3c9831120351ee..0bc9f4919330e4 100644
--- a/flang/lib/Lower/OpenMP/ClauseProcessor.cpp
+++ b/flang/lib/Lower/OpenMP/ClauseProcessor.cpp
@@ -936,8 +936,10 @@ void ClauseProcessor::processMapObjects(
llvm::omp::OpenMPOffloadMappingFlags mapTypeBits,
std::map<Object, OmpMapParentAndMemberData> &parentMemberIndices,
llvm::SmallVectorImpl<mlir::Value> &mapVars,
- llvm::SmallVectorImpl<const semantics::Symbol *> &mapSyms) const {
+ llvm::SmallVectorImpl<const semantics::Symbol *> &mapSyms,
+ std::string mapperIdName) const {
fir::FirOpBuilder &firOpBuilder = converter.getFirOpBuilder();
+ mlir::FlatSymbolRefAttr mapperId;
for (const omp::Object &object : objects) {
llvm::SmallVector<mlir::Value> bounds;
@@ -970,6 +972,20 @@ void ClauseProcessor::processMapObjects(
}
}
+ if (!mapperIdName.empty()) {
+ if (mapperIdName == "default") {
+ auto &typeSpec = object.sym()->owner().IsDerivedType()
+ ? *object.sym()->owner().derivedTypeSpec()
+ : object.sym()->GetType()->derivedTypeSpec();
+ mapperIdName = typeSpec.name().ToString() + ".default";
+ mapperIdName = converter.mangleName(mapperIdName, *typeSpec.GetScope());
+ }
+ assert(converter.getMLIRSymbolTable()->lookup(mapperIdName) &&
+ "mapper not found");
+ mapperId = mlir::FlatSymbolRefAttr::get(&converter.getMLIRContext(),
+ mapperIdName);
+ mapperIdName.clear();
+ }
// Explicit map captures are captured ByRef by default,
// optimisation passes may alter this to ByCopy or other capture
// types to optimise
@@ -983,7 +999,8 @@ void ClauseProcessor::processMapObjects(
static_cast<
std::underlying_type_t<llvm::omp::OpenMPOffloadMappingFlags>>(
mapTypeBits),
- mlir::omp::VariableCaptureKind::ByRef, baseOp.getType());
+ mlir::omp::VariableCaptureKind::ByRef, baseOp.getType(), false,
+ mapperId);
if (parentObj.has_value()) {
parentMemberIndices[parentObj.value()].addChildIndexAndMapToParent(
@@ -1014,6 +1031,7 @@ bool ClauseProcessor::processMap(
const auto &[mapType, typeMods, mappers, iterator, objects] = clause.t;
llvm::omp::OpenMPOffloadMappingFlags mapTypeBits =
llvm::omp::OpenMPOffloadMappingFlags::OMP_MAP_NONE;
+ std::string mapperIdName;
// If the map type is specified, then process it else Tofrom is the
// default.
Map::MapType type = mapType.value_or(Map::MapType::Tofrom);
@@ -1057,13 +1075,17 @@ bool ClauseProcessor::processMap(
"Support for iterator modifiers is not implemented yet");
}
if (mappers) {
- TODO(currentLocation,
- "Support for mapper modifiers is not implemented yet");
+ assert(mappers->size() == 1 && "more than one mapper");
+ mapperIdName = mappers->front().v.id().symbol->name().ToString();
+ if (mapperIdName != "default")
+ mapperIdName = converter.mangleName(
+ mapperIdName, mappers->front().v.id().symbol->owner());
}
processMapObjects(stmtCtx, clauseLocation,
std::get<omp::ObjectList>(clause.t), mapTypeBits,
- parentMemberIndices, result.mapVars, *ptrMapSyms);
+ parentMemberIndices, result.mapVars, *ptrMapSyms,
+ mapperIdName);
};
bool clauseFound = findRepeatableClause<omp::clause::Map>(process);
diff --git a/flang/lib/Lower/OpenMP/ClauseProcessor.h b/flang/lib/Lower/OpenMP/ClauseProcessor.h
index 7b047d4a7567ad..34eebf16ca17b0 100644
--- a/flang/lib/Lower/OpenMP/ClauseProcessor.h
+++ b/flang/lib/Lower/OpenMP/ClauseProcessor.h
@@ -171,7 +171,8 @@ class ClauseProcessor {
llvm::omp::OpenMPOffloadMappingFlags mapTypeBits,
std::map<Object, OmpMapParentAndMemberData> &parentMemberIndices,
llvm::SmallVectorImpl<mlir::Value> &mapVars,
- llvm::SmallVectorImpl<const semantics::Symbol *> &mapSyms) const;
+ llvm::SmallVectorImpl<const semantics::Symbol *> &mapSyms,
+ std::string mapperIdName = "") const;
lower::AbstractConverter &converter;
semantics::SemanticsContext &semaCtx;
diff --git a/flang/test/Lower/OpenMP/Todo/map-mapper.f90 b/flang/test/Lower/OpenMP/Todo/map-mapper.f90
deleted file mode 100644
index 9554ffd5fda7bd..00000000000000
--- a/flang/test/Lower/OpenMP/Todo/map-mapper.f90
+++ /dev/null
@@ -1,16 +0,0 @@
-! RUN: not %flang_fc1 -emit-fir -fopenmp -fopenmp-version=50 %s 2>&1 | FileCheck %s
-program p
- integer, parameter :: n = 256
- real(8) :: a(256)
- !! TODO: Add declare mapper, when it works to lower this construct
- !!type t1
- !! integer :: x
- !!end type t1
- !!!$omp declare mapper(xx : t1 :: nn) map(nn, nn%x)
- !$omp target map(mapper(xx), from:a)
-!CHECK: not yet implemented: Support for mapper modifiers is not implemented yet
- do i=1,n
- a(i) = 4.2
- end do
- !$omp end target
-end program p
diff --git a/flang/test/Lower/OpenMP/map-mapper.f90 b/flang/test/Lower/OpenMP/map-mapper.f90
new file mode 100644
index 00000000000000..856fff834643e4
--- /dev/null
+++ b/flang/test/Lower/OpenMP/map-mapper.f90
@@ -0,0 +1,23 @@
+! RUN: %flang_fc1 -emit-hlfir -fopenmp -fopenmp-version=50 %s -o - | FileCheck %s
+program p
+ integer, parameter :: n = 256
+ type t1
+ integer :: x(256)
+ end type t1
+
+ !$omp declare mapper(xx : t1 :: nn) map(to: nn, nn%x)
+ !$omp declare mapper(t1 :: nn) map(from: nn)
+
+ !CHECK-LABEL: omp.declare_mapper @_QQFt1.default : !fir.type<_QFTt1{x:!fir.array<256xi32>}>
+ !CHECK-LABEL: omp.declare_mapper @_QQFxx : !fir.type<_QFTt1{x:!fir.array<256xi32>}>
+
+ type(t1) :: a, b
+ !CHECK: %[[MAP_A:.*]] = omp.map.info var_ptr(%{{.*}} : {{.*}}, {{.*}}) mapper(@_QQFxx) map_clauses(tofrom) capture(ByRef) -> {{.*}} {name = "a"}
+ !CHECK: %[[MAP_B:.*]] = omp.map.info var_ptr(%{{.*}} : {{.*}}, {{.*}}) mapper(@_QQFt1.default) map_clauses(tofrom) capture(ByRef) -> {{.*}} {name = "b"}
+ !CHECK: omp.target map_entries(%[[MAP_A]] -> %{{.*}}, %[[MAP_B]] -> %{{.*}}, %{{.*}} -> %{{.*}}, %{{.*}} -> %{{.*}} : {{.*}}, {{.*}}, {{.*}}, {{.*}}) {
+ !$omp target map(mapper(xx) : a) map(mapper(default) : b)
+ do i = 1, n
+ b%x(i) = a%x(i)
+ end do
+ !$omp end target
+end program p
``````````
</details>
https://github.com/llvm/llvm-project/pull/121001
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