https://github.com/chandraghale created
https://github.com/llvm/llvm-project/pull/121741
Added codegen support for combined masked constructs Parallel masked taskloop.
Added implementation for EmitOMPParallelMaskedTaskLoopDirective.
>From 0c790fc2768d58634e0455adf9f797a2456a7335 Mon Sep 17 00:00:00 2001
From: Chandra Ghale <gh...@pe31.hpc.amslabs.hpecorp.net>
Date: Mon, 6 Jan 2025 03:35:46 -0600
Subject: [PATCH] codegen support for masked combined construct parallel masked
taskloop
---
clang/lib/CodeGen/CGStmt.cpp | 3 +-
clang/lib/CodeGen/CGStmtOpenMP.cpp | 18 ++++++
clang/lib/CodeGen/CodeGenFunction.h | 2 +
.../OpenMP/parallel_masked_taskloop_codegen.c | 62 +++++++++++++++++++
4 files changed, 84 insertions(+), 1 deletion(-)
create mode 100644 clang/test/OpenMP/parallel_masked_taskloop_codegen.c
diff --git a/clang/lib/CodeGen/CGStmt.cpp b/clang/lib/CodeGen/CGStmt.cpp
index 3974739d2abb47..06c434992ccba9 100644
--- a/clang/lib/CodeGen/CGStmt.cpp
+++ b/clang/lib/CodeGen/CGStmt.cpp
@@ -345,7 +345,8 @@ void CodeGenFunction::EmitStmt(const Stmt *S,
ArrayRef<const Attr *> Attrs) {
cast<OMPParallelMasterTaskLoopDirective>(*S));
break;
case Stmt::OMPParallelMaskedTaskLoopDirectiveClass:
- llvm_unreachable("parallel masked taskloop directive not supported yet.");
+ EmitOMPParallelMaskedTaskLoopDirective(
+ cast<OMPParallelMaskedTaskLoopDirective>(*S));
break;
case Stmt::OMPParallelMasterTaskLoopSimdDirectiveClass:
EmitOMPParallelMasterTaskLoopSimdDirective(
diff --git a/clang/lib/CodeGen/CGStmtOpenMP.cpp
b/clang/lib/CodeGen/CGStmtOpenMP.cpp
index 6cb37b20b7aeee..e45a5ea60e13cd 100644
--- a/clang/lib/CodeGen/CGStmtOpenMP.cpp
+++ b/clang/lib/CodeGen/CGStmtOpenMP.cpp
@@ -8024,6 +8024,24 @@ void
CodeGenFunction::EmitOMPParallelMasterTaskLoopDirective(
emitEmptyBoundParameters);
}
+void CodeGenFunction::EmitOMPParallelMaskedTaskLoopDirective(
+ const OMPParallelMaskedTaskLoopDirective &S) {
+ auto &&CodeGen = [this, &S](CodeGenFunction &CGF, PrePostActionTy &Action) {
+ auto &&TaskLoopCodeGen = [&S](CodeGenFunction &CGF,
+ PrePostActionTy &Action) {
+ Action.Enter(CGF);
+ CGF.EmitOMPTaskLoopBasedDirective(S);
+ };
+ OMPLexicalScope Scope(CGF, S, OMPD_parallel, /*EmitPreInitStmt=*/false);
+ CGM.getOpenMPRuntime().emitMaskedRegion(CGF, TaskLoopCodeGen,
+ S.getBeginLoc());
+ };
+ auto LPCRegion =
+ CGOpenMPRuntime::LastprivateConditionalRAII::disable(*this, S);
+ emitCommonOMPParallelDirective(*this, S, OMPD_masked_taskloop, CodeGen,
+ emitEmptyBoundParameters);
+}
+
void CodeGenFunction::EmitOMPParallelMasterTaskLoopSimdDirective(
const OMPParallelMasterTaskLoopSimdDirective &S) {
auto &&CodeGen = [this, &S](CodeGenFunction &CGF, PrePostActionTy &Action) {
diff --git a/clang/lib/CodeGen/CodeGenFunction.h
b/clang/lib/CodeGen/CodeGenFunction.h
index 1a5c42f8f974d0..1e8beca5513f05 100644
--- a/clang/lib/CodeGen/CodeGenFunction.h
+++ b/clang/lib/CodeGen/CodeGenFunction.h
@@ -3867,6 +3867,8 @@ class CodeGenFunction : public CodeGenTypeCache {
EmitOMPMasterTaskLoopSimdDirective(const OMPMasterTaskLoopSimdDirective &S);
void EmitOMPParallelMasterTaskLoopDirective(
const OMPParallelMasterTaskLoopDirective &S);
+ void EmitOMPParallelMaskedTaskLoopDirective(
+ const OMPParallelMaskedTaskLoopDirective &S);
void EmitOMPParallelMasterTaskLoopSimdDirective(
const OMPParallelMasterTaskLoopSimdDirective &S);
void EmitOMPDistributeDirective(const OMPDistributeDirective &S);
diff --git a/clang/test/OpenMP/parallel_masked_taskloop_codegen.c
b/clang/test/OpenMP/parallel_masked_taskloop_codegen.c
new file mode 100644
index 00000000000000..ed89ef92bb768d
--- /dev/null
+++ b/clang/test/OpenMP/parallel_masked_taskloop_codegen.c
@@ -0,0 +1,62 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
UTC_ARGS: --include-generated-funcs --prefix-filecheck-ir-name _ --version 5
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -fopenmp -fopenmp-version=52
-x c -emit-llvm %s -o - | FileCheck %s
+// expected-no-diagnostics
+#define N 100
+void parallel_masked_taskloop(){
+ #pragma omp parallel masked taskloop
+ for( int i = 0; i < N; i++)
+ ;
+
+}
+
+int main()
+{
+ parallel_masked_taskloop();
+}
+// CHECK-LABEL: define dso_local void @parallel_masked_taskloop(
+// CHECK-SAME: ) #[[ATTR0:[0-9]+]] {
+// CHECK-NEXT: [[ENTRY:.*:]]
+// CHECK-NEXT: call void (ptr, i32, ptr, ...) @__kmpc_fork_call(ptr
@[[GLOB1:[0-9]+]], i32 0, ptr @parallel_masked_taskloop.omp_outlined)
+// CHECK-NEXT: ret void
+//
+//
+// CHECK-LABEL: define internal void @parallel_masked_taskloop.omp_outlined(
+// CHECK-SAME: ptr noalias noundef [[DOTGLOBAL_TID_:%.*]], ptr noalias noundef
[[DOTBOUND_TID_:%.*]]) #[[ATTR1:[0-9]+]] {
+// CHECK-NEXT: [[ENTRY:.*:]]
+// CHECK-NEXT: [[DOTGLOBAL_TID__ADDR:%.*]] = alloca ptr, align 8
+// CHECK-NEXT: [[DOTBOUND_TID__ADDR:%.*]] = alloca ptr, align 8
+// CHECK-NEXT: [[AGG_CAPTURED:%.*]] = alloca [[STRUCT_ANON:%.*]], align 1
+// CHECK-NEXT: [[TMP:%.*]] = alloca i32, align 4
+// CHECK-NEXT: store ptr [[DOTGLOBAL_TID_]], ptr [[DOTGLOBAL_TID__ADDR]],
align 8
+// CHECK-NEXT: store ptr [[DOTBOUND_TID_]], ptr [[DOTBOUND_TID__ADDR]],
align 8
+// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[DOTGLOBAL_TID__ADDR]], align 8
+// CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[TMP0]], align 4
+// CHECK-NEXT: [[TMP2:%.*]] = call i32 @__kmpc_masked(ptr @[[GLOB1]], i32
[[TMP1]], i32 0)
+// CHECK-NEXT: [[TMP3:%.*]] = icmp ne i32 [[TMP2]], 0
+// CHECK-NEXT: br i1 [[TMP3]], label %[[OMP_IF_THEN:.*]], label
%[[OMP_IF_END:.*]]
+// CHECK: [[OMP_IF_THEN]]:
+// CHECK-NEXT: call void @__kmpc_taskgroup(ptr @[[GLOB1]], i32 [[TMP1]])
+// CHECK-NEXT: [[TMP4:%.*]] = call ptr @__kmpc_omp_task_alloc(ptr
@[[GLOB1]], i32 [[TMP1]], i32 1, i64 80, i64 0, ptr @.omp_task_entry.)
+// CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds nuw
[[STRUCT_KMP_TASK_T_WITH_PRIVATES:%.*]], ptr [[TMP4]], i32 0, i32 0
+// CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds nuw
[[STRUCT_KMP_TASK_T:%.*]], ptr [[TMP5]], i32 0, i32 5
+// CHECK-NEXT: store i64 0, ptr [[TMP6]], align 8
+// CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds nuw
[[STRUCT_KMP_TASK_T]], ptr [[TMP5]], i32 0, i32 6
+// CHECK-NEXT: store i64 99, ptr [[TMP7]], align 8
+// CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds nuw
[[STRUCT_KMP_TASK_T]], ptr [[TMP5]], i32 0, i32 7
+// CHECK-NEXT: store i64 1, ptr [[TMP8]], align 8
+// CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds nuw
[[STRUCT_KMP_TASK_T]], ptr [[TMP5]], i32 0, i32 9
+// CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[TMP9]], i8 0,
i64 8, i1 false)
+// CHECK-NEXT: [[TMP10:%.*]] = load i64, ptr [[TMP8]], align 8
+// CHECK-NEXT: call void @__kmpc_taskloop(ptr @[[GLOB1]], i32 [[TMP1]], ptr
[[TMP4]], i32 1, ptr [[TMP6]], ptr [[TMP7]], i64 [[TMP10]], i32 1, i32 0, i64
0, ptr null)
+// CHECK-NEXT: call void @__kmpc_end_taskgroup(ptr @[[GLOB1]], i32 [[TMP1]])
+// CHECK-NEXT: call void @__kmpc_end_masked(ptr @[[GLOB1]], i32 [[TMP1]])
+// CHECK-NEXT: br label %[[OMP_IF_END]]
+// CHECK: [[OMP_IF_END]]:
+// CHECK-NEXT: ret void
+//
+// CHECK-LABEL: define dso_local i32 @main(
+// CHECK-SAME: ) #[[ATTR0]] {
+// CHECK-NEXT: [[ENTRY:.*:]]
+// CHECK-NEXT: call void @parallel_masked_taskloop()
+// CHECK-NEXT: ret i32 0
+
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