Author: CHANDRA GHALE
Date: 2025-01-14T18:26:46+05:30
New Revision: 30f9a4f75412850d603fde29b59d27dd9d31f380

URL: 
https://github.com/llvm/llvm-project/commit/30f9a4f75412850d603fde29b59d27dd9d31f380
DIFF: 
https://github.com/llvm/llvm-project/commit/30f9a4f75412850d603fde29b59d27dd9d31f380.diff

LOG: [OpenMP] codegen support for masked combined construct parallel masked 
taskloop simd. (#121746)

Added codegen support for combined masked constructs `Parallel masked
taskloop simd`.
Added implementation for `EmitOMPParallelMaskedTaskLoopSimdDirective`.

Co-authored-by: Chandra Ghale <gh...@pe31.hpc.amslabs.hpecorp.net>

Added: 
    clang/test/OpenMP/parallel_masked_taskloop_simd_codegen.c

Modified: 
    clang/lib/CodeGen/CGStmt.cpp
    clang/lib/CodeGen/CGStmtOpenMP.cpp
    clang/lib/CodeGen/CodeGenFunction.h

Removed: 
    


################################################################################
diff  --git a/clang/lib/CodeGen/CGStmt.cpp b/clang/lib/CodeGen/CGStmt.cpp
index 4ba8ee1ca17d4e..10d44e9c90b27e 100644
--- a/clang/lib/CodeGen/CGStmt.cpp
+++ b/clang/lib/CodeGen/CGStmt.cpp
@@ -355,8 +355,8 @@ void CodeGenFunction::EmitStmt(const Stmt *S, 
ArrayRef<const Attr *> Attrs) {
         cast<OMPParallelMasterTaskLoopSimdDirective>(*S));
     break;
   case Stmt::OMPParallelMaskedTaskLoopSimdDirectiveClass:
-    llvm_unreachable(
-        "parallel masked taskloop simd directive not supported yet.");
+    EmitOMPParallelMaskedTaskLoopSimdDirective(
+        cast<OMPParallelMaskedTaskLoopSimdDirective>(*S));
     break;
   case Stmt::OMPDistributeDirectiveClass:
     EmitOMPDistributeDirective(cast<OMPDistributeDirective>(*S));

diff  --git a/clang/lib/CodeGen/CGStmtOpenMP.cpp 
b/clang/lib/CodeGen/CGStmtOpenMP.cpp
index 2b4ca65e169a6e..8e694b95dc7e73 100644
--- a/clang/lib/CodeGen/CGStmtOpenMP.cpp
+++ b/clang/lib/CodeGen/CGStmtOpenMP.cpp
@@ -8072,6 +8072,24 @@ void 
CodeGenFunction::EmitOMPParallelMasterTaskLoopSimdDirective(
                                  emitEmptyBoundParameters);
 }
 
+void CodeGenFunction::EmitOMPParallelMaskedTaskLoopSimdDirective(
+    const OMPParallelMaskedTaskLoopSimdDirective &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_simd, CodeGen,
+                                 emitEmptyBoundParameters);
+}
+
 // Generate the instructions for '#pragma omp target update' directive.
 void CodeGenFunction::EmitOMPTargetUpdateDirective(
     const OMPTargetUpdateDirective &S) {

diff  --git a/clang/lib/CodeGen/CodeGenFunction.h 
b/clang/lib/CodeGen/CodeGenFunction.h
index b115c15bf01a95..ba8ed040477cc9 100644
--- a/clang/lib/CodeGen/CodeGenFunction.h
+++ b/clang/lib/CodeGen/CodeGenFunction.h
@@ -3885,6 +3885,8 @@ class CodeGenFunction : public CodeGenTypeCache {
       const OMPParallelMaskedTaskLoopDirective &S);
   void EmitOMPParallelMasterTaskLoopSimdDirective(
       const OMPParallelMasterTaskLoopSimdDirective &S);
+  void EmitOMPParallelMaskedTaskLoopSimdDirective(
+      const OMPParallelMaskedTaskLoopSimdDirective &S);
   void EmitOMPDistributeDirective(const OMPDistributeDirective &S);
   void EmitOMPDistributeParallelForDirective(
       const OMPDistributeParallelForDirective &S);

diff  --git a/clang/test/OpenMP/parallel_masked_taskloop_simd_codegen.c 
b/clang/test/OpenMP/parallel_masked_taskloop_simd_codegen.c
new file mode 100644
index 00000000000000..0b51b302f9fcda
--- /dev/null
+++ b/clang/test/OpenMP/parallel_masked_taskloop_simd_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_simd(){
+       #pragma omp parallel masked taskloop simd
+       for( int i = 0; i < N; i++)
+       ;
+
+}
+
+int main()
+{
+ parallel_masked_taskloop_simd();
+}
+// CHECK-LABEL: define dso_local void @parallel_masked_taskloop_simd(
+// 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_simd.omp_outlined)
+// CHECK-NEXT:    ret void
+//
+//
+// CHECK-LABEL: define internal void 
@parallel_masked_taskloop_simd.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_simd()
+// CHECK-NEXT:    ret i32 0
+


        
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