[OpenMP] Add workdistribute construct in openMP dialect and in llvm frontend #154376
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This was referenced Aug 19, 2025
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@llvm/pr-subscribers-mlir-openmp @llvm/pr-subscribers-mlir Author: Chaitanya (skc7) ChangesThis PR adds workdistribute mlir op in omp dialect and also in llvm frontend. This is part 1 of workdistribute frontend support. Part1 : #154376 [OpenMP] Add workdistribute construct in openMP dialect and in llvm frontend Full diff: https://github.com/llvm/llvm-project/pull/154376.diff 5 Files Affected:
diff --git a/llvm/include/llvm/Frontend/OpenMP/OMP.td b/llvm/include/llvm/Frontend/OpenMP/OMP.td
index 202f684d808bc..6eaf19eed40c8 100644
--- a/llvm/include/llvm/Frontend/OpenMP/OMP.td
+++ b/llvm/include/llvm/Frontend/OpenMP/OMP.td
@@ -1322,6 +1322,17 @@ def OMP_EndWorkshare : Directive<[Spelling<"end workshare">]> {
let category = OMP_Workshare.category;
let languages = [L_Fortran];
}
+def OMP_Workdistribute : Directive<[Spelling<"workdistribute">]> {
+ let association = AS_Block;
+ let category = CA_Executable;
+ let languages = [L_Fortran];
+}
+def OMP_EndWorkdistribute : Directive<[Spelling<"end workdistribute">]> {
+ let leafConstructs = OMP_Workdistribute.leafConstructs;
+ let association = OMP_Workdistribute.association;
+ let category = OMP_Workdistribute.category;
+ let languages = [L_Fortran];
+}
//===----------------------------------------------------------------------===//
// Definitions of OpenMP compound directives
@@ -2482,6 +2493,35 @@ def OMP_TargetTeamsDistributeSimd
let leafConstructs = [OMP_Target, OMP_Teams, OMP_Distribute, OMP_Simd];
let category = CA_Executable;
}
+def OMP_TargetTeamsWorkdistribute : Directive<[Spelling<"target teams workdistribute">]> {
+ let allowedClauses = [
+ VersionedClause<OMPC_Allocate>,
+ VersionedClause<OMPC_Depend>,
+ VersionedClause<OMPC_FirstPrivate>,
+ VersionedClause<OMPC_HasDeviceAddr, 51>,
+ VersionedClause<OMPC_If>,
+ VersionedClause<OMPC_IsDevicePtr>,
+ VersionedClause<OMPC_Map>,
+ VersionedClause<OMPC_OMPX_Attribute>,
+ VersionedClause<OMPC_Private>,
+ VersionedClause<OMPC_Reduction>,
+ VersionedClause<OMPC_Shared>,
+ VersionedClause<OMPC_UsesAllocators, 50>,
+ ];
+ let allowedOnceClauses = [
+ VersionedClause<OMPC_Default>,
+ VersionedClause<OMPC_DefaultMap>,
+ VersionedClause<OMPC_Device>,
+ VersionedClause<OMPC_NoWait>,
+ VersionedClause<OMPC_NumTeams>,
+ VersionedClause<OMPC_OMPX_DynCGroupMem>,
+ VersionedClause<OMPC_OMPX_Bare>,
+ VersionedClause<OMPC_ThreadLimit>,
+ ];
+ let leafConstructs = [OMP_Target, OMP_Teams, OMP_Workdistribute];
+ let category = CA_Executable;
+ let languages = [L_Fortran];
+}
def OMP_target_teams_loop : Directive<[Spelling<"target teams loop">]> {
let allowedClauses = [
VersionedClause<OMPC_Allocate>,
@@ -2723,6 +2763,25 @@ def OMP_TeamsDistributeSimd : Directive<[Spelling<"teams distribute simd">]> {
let leafConstructs = [OMP_Teams, OMP_Distribute, OMP_Simd];
let category = CA_Executable;
}
+def OMP_TeamsWorkdistribute : Directive<[Spelling<"teams workdistribute">]> {
+ let allowedClauses = [
+ VersionedClause<OMPC_Allocate>,
+ VersionedClause<OMPC_FirstPrivate>,
+ VersionedClause<OMPC_OMPX_Attribute>,
+ VersionedClause<OMPC_Private>,
+ VersionedClause<OMPC_Reduction>,
+ VersionedClause<OMPC_Shared>,
+ ];
+ let allowedOnceClauses = [
+ VersionedClause<OMPC_Default>,
+ VersionedClause<OMPC_If, 52>,
+ VersionedClause<OMPC_NumTeams>,
+ VersionedClause<OMPC_ThreadLimit>,
+ ];
+ let leafConstructs = [OMP_Teams, OMP_Workdistribute];
+ let category = CA_Executable;
+ let languages = [L_Fortran];
+}
def OMP_teams_loop : Directive<[Spelling<"teams loop">]> {
let allowedClauses = [
VersionedClause<OMPC_Allocate>,
diff --git a/mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td b/mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td
index c956d69781b3d..2548a8ab4aac6 100644
--- a/mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td
+++ b/mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td
@@ -2209,4 +2209,27 @@ def TargetFreeMemOp : OpenMP_Op<"target_freemem",
let assemblyFormat = "$device `,` $heapref attr-dict `:` type($device) `,` qualified(type($heapref))";
}
+//===----------------------------------------------------------------------===//
+// workdistribute Construct
+//===----------------------------------------------------------------------===//
+
+def WorkdistributeOp : OpenMP_Op<"workdistribute"> {
+ let summary = "workdistribute directive";
+ let description = [{
+ workdistribute divides execution of the enclosed structured block into
+ separate units of work, each executed only once by each
+ initial thread in the league.
+ ```
+ !$omp target teams
+ !$omp workdistribute
+ y = a * x + y
+ !$omp end workdistribute
+ !$omp end target teams
+ ```
+ }];
+ let regions = (region AnyRegion:$region);
+ let hasVerifier = 1;
+ let assemblyFormat = "$region attr-dict";
+}
+
#endif // OPENMP_OPS
diff --git a/mlir/lib/Dialect/OpenMP/IR/OpenMPDialect.cpp b/mlir/lib/Dialect/OpenMP/IR/OpenMPDialect.cpp
index fa94219016c1e..6e43f28e8d93d 100644
--- a/mlir/lib/Dialect/OpenMP/IR/OpenMPDialect.cpp
+++ b/mlir/lib/Dialect/OpenMP/IR/OpenMPDialect.cpp
@@ -3975,6 +3975,58 @@ llvm::LogicalResult omp::TargetAllocMemOp::verify() {
return mlir::success();
}
+//===----------------------------------------------------------------------===//
+// WorkdistributeOp
+//===----------------------------------------------------------------------===//
+
+LogicalResult WorkdistributeOp::verify() {
+ // Check that region exists and is not empty
+ Region ®ion = getRegion();
+ if (region.empty())
+ return emitOpError("region cannot be empty");
+ // Verify single entry point.
+ Block &entryBlock = region.front();
+ if (entryBlock.empty())
+ return emitOpError("region must contain a structured block");
+ // Verify single exit point.
+ bool hasTerminator = false;
+ for (Block &block : region) {
+ if (isa<TerminatorOp>(block.back())) {
+ if (hasTerminator) {
+ return emitOpError("region must have exactly one terminator");
+ }
+ hasTerminator = true;
+ }
+ }
+ if (!hasTerminator) {
+ return emitOpError("region must be terminated with omp.terminator");
+ }
+ auto walkResult = region.walk([&](Operation *op) -> WalkResult {
+ // No implicit barrier at end
+ if (isa<BarrierOp>(op)) {
+ return emitOpError(
+ "explicit barriers are not allowed in workdistribute region");
+ }
+ // Check for invalid nested constructs
+ if (isa<ParallelOp>(op)) {
+ return emitOpError(
+ "nested parallel constructs not allowed in workdistribute");
+ }
+ if (isa<TeamsOp>(op)) {
+ return emitOpError(
+ "nested teams constructs not allowed in workdistribute");
+ }
+ return WalkResult::advance();
+ });
+ if (walkResult.wasInterrupted())
+ return failure();
+
+ Operation *parentOp = (*this)->getParentOp();
+ if (!llvm::dyn_cast<TeamsOp>(parentOp))
+ return emitOpError("workdistribute must be nested under teams");
+ return success();
+}
+
#define GET_ATTRDEF_CLASSES
#include "mlir/Dialect/OpenMP/OpenMPOpsAttributes.cpp.inc"
diff --git a/mlir/test/Dialect/OpenMP/invalid.mlir b/mlir/test/Dialect/OpenMP/invalid.mlir
index 5088f2dfa7d7a..986c3844d0bb9 100644
--- a/mlir/test/Dialect/OpenMP/invalid.mlir
+++ b/mlir/test/Dialect/OpenMP/invalid.mlir
@@ -3017,3 +3017,110 @@ func.func @invalid_allocate_allocator(%arg0 : memref<i32>) -> () {
return
}
+
+// -----
+func.func @invalid_workdistribute_empty_region() -> () {
+ omp.teams {
+ // expected-error @below {{region cannot be empty}}
+ omp.workdistribute {
+ }
+ omp.terminator
+ }
+ return
+}
+
+// -----
+func.func @invalid_workdistribute_no_terminator() -> () {
+ omp.teams {
+ // expected-error @below {{region must be terminated with omp.terminator}}
+ omp.workdistribute {
+ %c0 = arith.constant 0 : i32
+ }
+ omp.terminator
+ }
+ return
+}
+
+// -----
+func.func @invalid_workdistribute_wrong_terminator() -> () {
+ omp.teams {
+ // expected-error @below {{region must be terminated with omp.terminator}}
+ omp.workdistribute {
+ %c0 = arith.constant 0 : i32
+ func.return
+ }
+ omp.terminator
+ }
+ return
+}
+
+// -----
+func.func @invalid_workdistribute_multiple_terminators() -> () {
+ omp.teams {
+ // expected-error @below {{region must have exactly one terminator}}
+ omp.workdistribute {
+ %cond = arith.constant true
+ cf.cond_br %cond, ^bb1, ^bb2
+ ^bb1:
+ omp.terminator
+ ^bb2:
+ omp.terminator
+ }
+ omp.terminator
+ }
+ return
+}
+
+// -----
+func.func @invalid_workdistribute_with_barrier() -> () {
+ omp.teams {
+ // expected-error @below {{explicit barriers are not allowed in workdistribute region}}
+ omp.workdistribute {
+ %c0 = arith.constant 0 : i32
+ omp.barrier
+ omp.terminator
+ }
+ omp.terminator
+ }
+ return
+}
+
+// -----
+func.func @invalid_workdistribute_nested_parallel() -> () {
+ omp.teams {
+ // expected-error @below {{nested parallel constructs not allowed in workdistribute}}
+ omp.workdistribute {
+ omp.parallel {
+ omp.terminator
+ }
+ omp.terminator
+ }
+ omp.terminator
+ }
+ return
+}
+
+// -----
+// Test: nested teams not allowed in workdistribute
+func.func @invalid_workdistribute_nested_teams() -> () {
+ omp.teams {
+ // expected-error @below {{nested teams constructs not allowed in workdistribute}}
+ omp.workdistribute {
+ omp.teams {
+ omp.terminator
+ }
+ omp.terminator
+ }
+ omp.terminator
+ }
+ return
+}
+
+// -----
+func.func @invalid_workdistribute() -> () {
+// expected-error @below {{workdistribute must be nested under teams}}
+ omp.workdistribute {
+ omp.terminator
+ }
+ return
+}
diff --git a/mlir/test/Dialect/OpenMP/ops.mlir b/mlir/test/Dialect/OpenMP/ops.mlir
index 8c846cde1a3ca..3c2e0a3b7cc15 100644
--- a/mlir/test/Dialect/OpenMP/ops.mlir
+++ b/mlir/test/Dialect/OpenMP/ops.mlir
@@ -3238,3 +3238,15 @@ func.func @omp_allocate_dir(%arg0 : memref<i32>, %arg1 : memref<i32>) -> () {
return
}
+// CHECK-LABEL: func.func @omp_workdistribute
+func.func @omp_workdistribute() {
+ // CHECK: omp.teams
+ omp.teams {
+ // CHECK: omp.workdistribute
+ omp.workdistribute {
+ omp.terminator
+ }
+ omp.terminator
+ }
+ return
+}
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@llvm/pr-subscribers-flang-openmp Author: Chaitanya (skc7) ChangesThis PR adds workdistribute mlir op in omp dialect and also in llvm frontend. This is part 1 of workdistribute frontend support. Part1 : #154376 [OpenMP] Add workdistribute construct in openMP dialect and in llvm frontend Full diff: https://github.com/llvm/llvm-project/pull/154376.diff 5 Files Affected:
diff --git a/llvm/include/llvm/Frontend/OpenMP/OMP.td b/llvm/include/llvm/Frontend/OpenMP/OMP.td
index 202f684d808bc..6eaf19eed40c8 100644
--- a/llvm/include/llvm/Frontend/OpenMP/OMP.td
+++ b/llvm/include/llvm/Frontend/OpenMP/OMP.td
@@ -1322,6 +1322,17 @@ def OMP_EndWorkshare : Directive<[Spelling<"end workshare">]> {
let category = OMP_Workshare.category;
let languages = [L_Fortran];
}
+def OMP_Workdistribute : Directive<[Spelling<"workdistribute">]> {
+ let association = AS_Block;
+ let category = CA_Executable;
+ let languages = [L_Fortran];
+}
+def OMP_EndWorkdistribute : Directive<[Spelling<"end workdistribute">]> {
+ let leafConstructs = OMP_Workdistribute.leafConstructs;
+ let association = OMP_Workdistribute.association;
+ let category = OMP_Workdistribute.category;
+ let languages = [L_Fortran];
+}
//===----------------------------------------------------------------------===//
// Definitions of OpenMP compound directives
@@ -2482,6 +2493,35 @@ def OMP_TargetTeamsDistributeSimd
let leafConstructs = [OMP_Target, OMP_Teams, OMP_Distribute, OMP_Simd];
let category = CA_Executable;
}
+def OMP_TargetTeamsWorkdistribute : Directive<[Spelling<"target teams workdistribute">]> {
+ let allowedClauses = [
+ VersionedClause<OMPC_Allocate>,
+ VersionedClause<OMPC_Depend>,
+ VersionedClause<OMPC_FirstPrivate>,
+ VersionedClause<OMPC_HasDeviceAddr, 51>,
+ VersionedClause<OMPC_If>,
+ VersionedClause<OMPC_IsDevicePtr>,
+ VersionedClause<OMPC_Map>,
+ VersionedClause<OMPC_OMPX_Attribute>,
+ VersionedClause<OMPC_Private>,
+ VersionedClause<OMPC_Reduction>,
+ VersionedClause<OMPC_Shared>,
+ VersionedClause<OMPC_UsesAllocators, 50>,
+ ];
+ let allowedOnceClauses = [
+ VersionedClause<OMPC_Default>,
+ VersionedClause<OMPC_DefaultMap>,
+ VersionedClause<OMPC_Device>,
+ VersionedClause<OMPC_NoWait>,
+ VersionedClause<OMPC_NumTeams>,
+ VersionedClause<OMPC_OMPX_DynCGroupMem>,
+ VersionedClause<OMPC_OMPX_Bare>,
+ VersionedClause<OMPC_ThreadLimit>,
+ ];
+ let leafConstructs = [OMP_Target, OMP_Teams, OMP_Workdistribute];
+ let category = CA_Executable;
+ let languages = [L_Fortran];
+}
def OMP_target_teams_loop : Directive<[Spelling<"target teams loop">]> {
let allowedClauses = [
VersionedClause<OMPC_Allocate>,
@@ -2723,6 +2763,25 @@ def OMP_TeamsDistributeSimd : Directive<[Spelling<"teams distribute simd">]> {
let leafConstructs = [OMP_Teams, OMP_Distribute, OMP_Simd];
let category = CA_Executable;
}
+def OMP_TeamsWorkdistribute : Directive<[Spelling<"teams workdistribute">]> {
+ let allowedClauses = [
+ VersionedClause<OMPC_Allocate>,
+ VersionedClause<OMPC_FirstPrivate>,
+ VersionedClause<OMPC_OMPX_Attribute>,
+ VersionedClause<OMPC_Private>,
+ VersionedClause<OMPC_Reduction>,
+ VersionedClause<OMPC_Shared>,
+ ];
+ let allowedOnceClauses = [
+ VersionedClause<OMPC_Default>,
+ VersionedClause<OMPC_If, 52>,
+ VersionedClause<OMPC_NumTeams>,
+ VersionedClause<OMPC_ThreadLimit>,
+ ];
+ let leafConstructs = [OMP_Teams, OMP_Workdistribute];
+ let category = CA_Executable;
+ let languages = [L_Fortran];
+}
def OMP_teams_loop : Directive<[Spelling<"teams loop">]> {
let allowedClauses = [
VersionedClause<OMPC_Allocate>,
diff --git a/mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td b/mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td
index c956d69781b3d..2548a8ab4aac6 100644
--- a/mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td
+++ b/mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td
@@ -2209,4 +2209,27 @@ def TargetFreeMemOp : OpenMP_Op<"target_freemem",
let assemblyFormat = "$device `,` $heapref attr-dict `:` type($device) `,` qualified(type($heapref))";
}
+//===----------------------------------------------------------------------===//
+// workdistribute Construct
+//===----------------------------------------------------------------------===//
+
+def WorkdistributeOp : OpenMP_Op<"workdistribute"> {
+ let summary = "workdistribute directive";
+ let description = [{
+ workdistribute divides execution of the enclosed structured block into
+ separate units of work, each executed only once by each
+ initial thread in the league.
+ ```
+ !$omp target teams
+ !$omp workdistribute
+ y = a * x + y
+ !$omp end workdistribute
+ !$omp end target teams
+ ```
+ }];
+ let regions = (region AnyRegion:$region);
+ let hasVerifier = 1;
+ let assemblyFormat = "$region attr-dict";
+}
+
#endif // OPENMP_OPS
diff --git a/mlir/lib/Dialect/OpenMP/IR/OpenMPDialect.cpp b/mlir/lib/Dialect/OpenMP/IR/OpenMPDialect.cpp
index fa94219016c1e..6e43f28e8d93d 100644
--- a/mlir/lib/Dialect/OpenMP/IR/OpenMPDialect.cpp
+++ b/mlir/lib/Dialect/OpenMP/IR/OpenMPDialect.cpp
@@ -3975,6 +3975,58 @@ llvm::LogicalResult omp::TargetAllocMemOp::verify() {
return mlir::success();
}
+//===----------------------------------------------------------------------===//
+// WorkdistributeOp
+//===----------------------------------------------------------------------===//
+
+LogicalResult WorkdistributeOp::verify() {
+ // Check that region exists and is not empty
+ Region ®ion = getRegion();
+ if (region.empty())
+ return emitOpError("region cannot be empty");
+ // Verify single entry point.
+ Block &entryBlock = region.front();
+ if (entryBlock.empty())
+ return emitOpError("region must contain a structured block");
+ // Verify single exit point.
+ bool hasTerminator = false;
+ for (Block &block : region) {
+ if (isa<TerminatorOp>(block.back())) {
+ if (hasTerminator) {
+ return emitOpError("region must have exactly one terminator");
+ }
+ hasTerminator = true;
+ }
+ }
+ if (!hasTerminator) {
+ return emitOpError("region must be terminated with omp.terminator");
+ }
+ auto walkResult = region.walk([&](Operation *op) -> WalkResult {
+ // No implicit barrier at end
+ if (isa<BarrierOp>(op)) {
+ return emitOpError(
+ "explicit barriers are not allowed in workdistribute region");
+ }
+ // Check for invalid nested constructs
+ if (isa<ParallelOp>(op)) {
+ return emitOpError(
+ "nested parallel constructs not allowed in workdistribute");
+ }
+ if (isa<TeamsOp>(op)) {
+ return emitOpError(
+ "nested teams constructs not allowed in workdistribute");
+ }
+ return WalkResult::advance();
+ });
+ if (walkResult.wasInterrupted())
+ return failure();
+
+ Operation *parentOp = (*this)->getParentOp();
+ if (!llvm::dyn_cast<TeamsOp>(parentOp))
+ return emitOpError("workdistribute must be nested under teams");
+ return success();
+}
+
#define GET_ATTRDEF_CLASSES
#include "mlir/Dialect/OpenMP/OpenMPOpsAttributes.cpp.inc"
diff --git a/mlir/test/Dialect/OpenMP/invalid.mlir b/mlir/test/Dialect/OpenMP/invalid.mlir
index 5088f2dfa7d7a..986c3844d0bb9 100644
--- a/mlir/test/Dialect/OpenMP/invalid.mlir
+++ b/mlir/test/Dialect/OpenMP/invalid.mlir
@@ -3017,3 +3017,110 @@ func.func @invalid_allocate_allocator(%arg0 : memref<i32>) -> () {
return
}
+
+// -----
+func.func @invalid_workdistribute_empty_region() -> () {
+ omp.teams {
+ // expected-error @below {{region cannot be empty}}
+ omp.workdistribute {
+ }
+ omp.terminator
+ }
+ return
+}
+
+// -----
+func.func @invalid_workdistribute_no_terminator() -> () {
+ omp.teams {
+ // expected-error @below {{region must be terminated with omp.terminator}}
+ omp.workdistribute {
+ %c0 = arith.constant 0 : i32
+ }
+ omp.terminator
+ }
+ return
+}
+
+// -----
+func.func @invalid_workdistribute_wrong_terminator() -> () {
+ omp.teams {
+ // expected-error @below {{region must be terminated with omp.terminator}}
+ omp.workdistribute {
+ %c0 = arith.constant 0 : i32
+ func.return
+ }
+ omp.terminator
+ }
+ return
+}
+
+// -----
+func.func @invalid_workdistribute_multiple_terminators() -> () {
+ omp.teams {
+ // expected-error @below {{region must have exactly one terminator}}
+ omp.workdistribute {
+ %cond = arith.constant true
+ cf.cond_br %cond, ^bb1, ^bb2
+ ^bb1:
+ omp.terminator
+ ^bb2:
+ omp.terminator
+ }
+ omp.terminator
+ }
+ return
+}
+
+// -----
+func.func @invalid_workdistribute_with_barrier() -> () {
+ omp.teams {
+ // expected-error @below {{explicit barriers are not allowed in workdistribute region}}
+ omp.workdistribute {
+ %c0 = arith.constant 0 : i32
+ omp.barrier
+ omp.terminator
+ }
+ omp.terminator
+ }
+ return
+}
+
+// -----
+func.func @invalid_workdistribute_nested_parallel() -> () {
+ omp.teams {
+ // expected-error @below {{nested parallel constructs not allowed in workdistribute}}
+ omp.workdistribute {
+ omp.parallel {
+ omp.terminator
+ }
+ omp.terminator
+ }
+ omp.terminator
+ }
+ return
+}
+
+// -----
+// Test: nested teams not allowed in workdistribute
+func.func @invalid_workdistribute_nested_teams() -> () {
+ omp.teams {
+ // expected-error @below {{nested teams constructs not allowed in workdistribute}}
+ omp.workdistribute {
+ omp.teams {
+ omp.terminator
+ }
+ omp.terminator
+ }
+ omp.terminator
+ }
+ return
+}
+
+// -----
+func.func @invalid_workdistribute() -> () {
+// expected-error @below {{workdistribute must be nested under teams}}
+ omp.workdistribute {
+ omp.terminator
+ }
+ return
+}
diff --git a/mlir/test/Dialect/OpenMP/ops.mlir b/mlir/test/Dialect/OpenMP/ops.mlir
index 8c846cde1a3ca..3c2e0a3b7cc15 100644
--- a/mlir/test/Dialect/OpenMP/ops.mlir
+++ b/mlir/test/Dialect/OpenMP/ops.mlir
@@ -3238,3 +3238,15 @@ func.func @omp_allocate_dir(%arg0 : memref<i32>, %arg1 : memref<i32>) -> () {
return
}
+// CHECK-LABEL: func.func @omp_workdistribute
+func.func @omp_workdistribute() {
+ // CHECK: omp.teams
+ omp.teams {
+ // CHECK: omp.workdistribute
+ omp.workdistribute {
+ omp.terminator
+ }
+ omp.terminator
+ }
+ return
+}
|
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This PR adds workdistribute mlir op in omp dialect and also in llvm frontend.
This is part 1 of workdistribute frontend support.
Part1 : #154376 [OpenMP] Add workdistribute construct in openMP dialect and in llvm frontend
Part2 : #154377 [flang][openmp] Add parser/semantic support for workdistribute
Part3 : #154378 [flang][openmp] Add Lowering to omp mlir for workdistribute construct