[OpenMP][mlir] Added num_teams, thread_limit translation to LLVM IR
#68821
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This patch adds translation to LLVM IR for `num_teams` and `thread_limit` in for `omp.teams` operation.
shraiysh
requested review from
jsjodin,
kiranchandramohan,
raghavendhra,
DominikAdamski,
NimishMishra,
TIFitis and
kiranktp
|
@llvm/pr-subscribers-mlir @llvm/pr-subscribers-mlir-llvm Author: Shraiysh (shraiysh) ChangesThis patch adds translation to LLVM IR for Full diff: https://github.com/llvm/llvm-project/pull/68821.diff 2 Files Affected:
diff --git a/mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp b/mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp
index 1ec3bb8e7562a9e..ae974c14fac41a6 100644
--- a/mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp
+++ b/mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp
@@ -667,11 +667,9 @@ convertOmpTeams(omp::TeamsOp op, llvm::IRBuilderBase &builder,
LLVM::ModuleTranslation &moduleTranslation) {
using InsertPointTy = llvm::OpenMPIRBuilder::InsertPointTy;
LogicalResult bodyGenStatus = success();
- if (op.getNumTeamsLower() || op.getNumTeamsUpper() || op.getIfExpr() ||
- op.getThreadLimit() || !op.getAllocatorsVars().empty() ||
- op.getReductions()) {
+ if (op.getIfExpr() || !op.getAllocatorsVars().empty() || op.getReductions())
return op.emitError("unhandled clauses for translation to LLVM IR");
- }
+
auto bodyCB = [&](InsertPointTy allocaIP, InsertPointTy codegenIP) {
LLVM::ModuleTranslation::SaveStack<OpenMPAllocaStackFrame> frame(
moduleTranslation, allocaIP);
@@ -680,9 +678,21 @@ convertOmpTeams(omp::TeamsOp op, llvm::IRBuilderBase &builder,
moduleTranslation, bodyGenStatus);
};
+ llvm::Value *numTeamsLower = nullptr;
+ if (auto numTeamsLowerVar = op.getNumTeamsLower())
+ numTeamsLower = moduleTranslation.lookupValue(numTeamsLowerVar);
+
+ llvm::Value *numTeamsUpper = nullptr;
+ if (auto numTeamsUpperVar = op.getNumTeamsUpper())
+ numTeamsUpper = moduleTranslation.lookupValue(numTeamsUpperVar);
+
+ llvm::Value *threadLimit = nullptr;
+ if (auto threadLimitVar = op.getThreadLimit())
+ threadLimit = moduleTranslation.lookupValue(threadLimitVar);
+
llvm::OpenMPIRBuilder::LocationDescription ompLoc(builder);
- builder.restoreIP(
- moduleTranslation.getOpenMPBuilder()->createTeams(ompLoc, bodyCB));
+ builder.restoreIP(moduleTranslation.getOpenMPBuilder()->createTeams(
+ ompLoc, bodyCB, numTeamsLower, numTeamsUpper, threadLimit));
return bodyGenStatus;
}
diff --git a/mlir/test/Target/LLVMIR/openmp-teams.mlir b/mlir/test/Target/LLVMIR/openmp-teams.mlir
index 18fc2bb5a3c61b2..87ef90223ed704a 100644
--- a/mlir/test/Target/LLVMIR/openmp-teams.mlir
+++ b/mlir/test/Target/LLVMIR/openmp-teams.mlir
@@ -124,3 +124,114 @@ llvm.func @omp_teams_branching_shared(%condition: i1, %arg0: i32, %arg1: f32, %a
// CHECK-NEXT: br label
// CHECK: ret void
+// -----
+
+llvm.func @beforeTeams()
+llvm.func @duringTeams()
+llvm.func @afterTeams()
+
+// CHECK-LABEL: @omp_teams_thread_limit
+// CHECK-SAME: (i32 [[THREAD_LIMIT:.+]])
+llvm.func @omp_teams_thread_limit(%threadLimit: i32) {
+ // CHECK-NEXT: call void @beforeTeams()
+ llvm.call @beforeTeams() : () -> ()
+ // CHECK: [[THREAD_NUM:%.+]] = call i32 @__kmpc_global_thread_num
+ // CHECK-NEXT: call void @__kmpc_push_num_teams_51({{.+}}, i32 [[THREAD_NUM]], i32 0, i32 0, i32 [[THREAD_LIMIT]])
+ // CHECK: call void (ptr, i32, ptr, ...) @__kmpc_fork_teams(ptr @1, i32 0, ptr [[OUTLINED_FN:.+]])
+ omp.teams thread_limit(%threadLimit : i32) {
+ llvm.call @duringTeams() : () -> ()
+ omp.terminator
+ }
+ // CHECK: call void @afterTeams
+ llvm.call @afterTeams() : () -> ()
+ // CHECK: ret void
+ llvm.return
+}
+
+// CHECK: define internal void [[OUTLINED_FN]](ptr {{.+}}, ptr {{.+}})
+// CHECK: call void @duringTeams()
+// CHECK: ret void
+
+// -----
+
+llvm.func @beforeTeams()
+llvm.func @duringTeams()
+llvm.func @afterTeams()
+
+// CHECK-LABEL: @omp_teams_num_teams_upper
+// CHECK-SAME: (i32 [[NUM_TEAMS_UPPER:.+]])
+llvm.func @omp_teams_num_teams_upper(%numTeamsUpper: i32) {
+ // CHECK-NEXT: call void @beforeTeams()
+ llvm.call @beforeTeams() : () -> ()
+ // CHECK: [[THREAD_NUM:%.+]] = call i32 @__kmpc_global_thread_num
+ // CHECK-NEXT: call void @__kmpc_push_num_teams_51({{.+}}, i32 [[THREAD_NUM]], i32 [[NUM_TEAMS_UPPER]], i32 [[NUM_TEAMS_UPPER]], i32 0)
+ // CHECK: call void (ptr, i32, ptr, ...) @__kmpc_fork_teams(ptr @1, i32 0, ptr [[OUTLINED_FN:.+]])
+ omp.teams num_teams(to %numTeamsUpper : i32) {
+ llvm.call @duringTeams() : () -> ()
+ omp.terminator
+ }
+ // CHECK: call void @afterTeams
+ llvm.call @afterTeams() : () -> ()
+ // CHECK: ret void
+ llvm.return
+}
+
+// CHECK: define internal void [[OUTLINED_FN]](ptr {{.+}}, ptr {{.+}})
+// CHECK: call void @duringTeams()
+// CHECK: ret void
+
+// -----
+
+llvm.func @beforeTeams()
+llvm.func @duringTeams()
+llvm.func @afterTeams()
+
+// CHECK-LABEL: @omp_teams_num_teams_lower_and_upper
+// CHECK-SAME: (i32 [[NUM_TEAMS_LOWER:.+]], i32 [[NUM_TEAMS_UPPER:.+]])
+llvm.func @omp_teams_num_teams_lower_and_upper(%numTeamsLower: i32, %numTeamsUpper: i32) {
+ // CHECK-NEXT: call void @beforeTeams()
+ llvm.call @beforeTeams() : () -> ()
+ // CHECK: [[THREAD_NUM:%.+]] = call i32 @__kmpc_global_thread_num
+ // CHECK-NEXT: call void @__kmpc_push_num_teams_51({{.+}}, i32 [[THREAD_NUM]], i32 [[NUM_TEAMS_LOWER]], i32 [[NUM_TEAMS_UPPER]], i32 0)
+ // CHECK: call void (ptr, i32, ptr, ...) @__kmpc_fork_teams(ptr @1, i32 0, ptr [[OUTLINED_FN:.+]])
+ omp.teams num_teams(%numTeamsLower : i32 to %numTeamsUpper: i32) {
+ llvm.call @duringTeams() : () -> ()
+ omp.terminator
+ }
+ // CHECK: call void @afterTeams
+ llvm.call @afterTeams() : () -> ()
+ // CHECK: ret void
+ llvm.return
+}
+
+// CHECK: define internal void [[OUTLINED_FN]](ptr {{.+}}, ptr {{.+}})
+// CHECK: call void @duringTeams()
+// CHECK: ret void
+
+// -----
+
+llvm.func @beforeTeams()
+llvm.func @duringTeams()
+llvm.func @afterTeams()
+
+// CHECK-LABEL: @omp_teams_num_teams_and_thread_limit
+// CHECK-SAME: (i32 [[NUM_TEAMS_LOWER:.+]], i32 [[NUM_TEAMS_UPPER:.+]], i32 [[THREAD_LIMIT:.+]])
+llvm.func @omp_teams_num_teams_and_thread_limit(%numTeamsLower: i32, %numTeamsUpper: i32, %threadLimit: i32) {
+ // CHECK-NEXT: call void @beforeTeams()
+ llvm.call @beforeTeams() : () -> ()
+ // CHECK: [[THREAD_NUM:%.+]] = call i32 @__kmpc_global_thread_num
+ // CHECK-NEXT: call void @__kmpc_push_num_teams_51({{.+}}, i32 [[THREAD_NUM]], i32 [[NUM_TEAMS_LOWER]], i32 [[NUM_TEAMS_UPPER]], i32 [[THREAD_LIMIT]])
+ // CHECK: call void (ptr, i32, ptr, ...) @__kmpc_fork_teams(ptr @1, i32 0, ptr [[OUTLINED_FN:.+]])
+ omp.teams num_teams(%numTeamsLower : i32 to %numTeamsUpper: i32) thread_limit(%threadLimit: i32) {
+ llvm.call @duringTeams() : () -> ()
+ omp.terminator
+ }
+ // CHECK: call void @afterTeams
+ llvm.call @afterTeams() : () -> ()
+ // CHECK: ret void
+ llvm.return
+}
+
+// CHECK: define internal void [[OUTLINED_FN]](ptr {{.+}}, ptr {{.+}})
+// CHECK: call void @duringTeams()
+// CHECK: ret void
|
kiranchandramohan
approved these changes
Oct 12, 2023
Comment on lines
681
to
691
| llvm::Value *numTeamsLower = nullptr; | ||
| if (auto numTeamsLowerVar = op.getNumTeamsLower()) | ||
| numTeamsLower = moduleTranslation.lookupValue(numTeamsLowerVar); | ||
|
|
||
| llvm::Value *numTeamsUpper = nullptr; | ||
| if (auto numTeamsUpperVar = op.getNumTeamsUpper()) | ||
| numTeamsUpper = moduleTranslation.lookupValue(numTeamsUpperVar); | ||
|
|
||
| llvm::Value *threadLimit = nullptr; | ||
| if (auto threadLimitVar = op.getThreadLimit()) | ||
| threadLimit = moduleTranslation.lookupValue(threadLimitVar); |
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This patch adds translation to LLVM IR for
num_teamsandthread_limitin foromp.teamsoperation.