[Openmp-commits] [openmp] [clang] [Clang][OpenMP] Fix ordering of processing of map clauses when mapping a struct. (PR #72410)
Gheorghe-Teodor Bercea via Openmp-commits
openmp-commits at lists.llvm.org
Mon Nov 20 16:21:31 PST 2023
https://github.com/doru1004 updated https://github.com/llvm/llvm-project/pull/72410
>From 6712acd1175d1d6d55ce261651a543872a221c9a Mon Sep 17 00:00:00 2001
From: Doru Bercea <doru.bercea at amd.com>
Date: Wed, 15 Nov 2023 11:07:09 -0500
Subject: [PATCH] Fix ordering when mapping a struct.
---
clang/lib/CodeGen/CGOpenMPRuntime.cpp | 22 +++
clang/test/OpenMP/map_struct_ordering.cpp | 172 ++++++++++++++++++
.../struct_mapping_with_pointers.cpp | 114 ++++++++++++
3 files changed, 308 insertions(+)
create mode 100644 clang/test/OpenMP/map_struct_ordering.cpp
create mode 100644 openmp/libomptarget/test/offloading/struct_mapping_with_pointers.cpp
diff --git a/clang/lib/CodeGen/CGOpenMPRuntime.cpp b/clang/lib/CodeGen/CGOpenMPRuntime.cpp
index d2be8141a3a4b31..84a6b36646897d7 100644
--- a/clang/lib/CodeGen/CGOpenMPRuntime.cpp
+++ b/clang/lib/CodeGen/CGOpenMPRuntime.cpp
@@ -7731,10 +7731,30 @@ class MappableExprsHandler {
IsImplicit, Mapper, VarRef, ForDeviceAddr);
};
+ // Sort all map clauses and make sure all the maps containing array
+ // sections are processed last.
+ llvm::SmallVector<const OMPMapClause *, 16> SortedMapClauses;
for (const auto *Cl : Clauses) {
const auto *C = dyn_cast<OMPMapClause>(Cl);
if (!C)
continue;
+ const auto *EI = C->getVarRefs().begin();
+ if (*EI && !isa<OMPArraySectionExpr>(*EI)) {
+ SortedMapClauses.emplace_back(C);
+ }
+ }
+ for (const auto *Cl : Clauses) {
+ const auto *C = dyn_cast<OMPMapClause>(Cl);
+ if (!C)
+ continue;
+ const auto *EI = C->getVarRefs().begin();
+ if (*EI && isa<OMPArraySectionExpr>(*EI)) {
+ SortedMapClauses.emplace_back(C);
+ }
+ }
+
+ // Iterate over all map clauses:
+ for (const OMPMapClause *C : SortedMapClauses) {
MapKind Kind = Other;
if (llvm::is_contained(C->getMapTypeModifiers(),
OMPC_MAP_MODIFIER_present))
@@ -7751,6 +7771,7 @@ class MappableExprsHandler {
++EI;
}
}
+
for (const auto *Cl : Clauses) {
const auto *C = dyn_cast<OMPToClause>(Cl);
if (!C)
@@ -7767,6 +7788,7 @@ class MappableExprsHandler {
++EI;
}
}
+
for (const auto *Cl : Clauses) {
const auto *C = dyn_cast<OMPFromClause>(Cl);
if (!C)
diff --git a/clang/test/OpenMP/map_struct_ordering.cpp b/clang/test/OpenMP/map_struct_ordering.cpp
new file mode 100644
index 000000000000000..035b39b5b12ab4a
--- /dev/null
+++ b/clang/test/OpenMP/map_struct_ordering.cpp
@@ -0,0 +1,172 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --include-generated-funcs --replace-value-regex "__omp_offloading_[0-9a-z]+_[0-9a-z]+" --prefix-filecheck-ir-name _ --version 4
+
+// RUN: %clang_cc1 -verify -fopenmp -x c++ -std=c++11 -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm %s -o - -Wno-openmp-mapping | FileCheck %s --check-prefix=CHECK
+
+// expected-no-diagnostics
+#ifndef HEADER
+#define HEADER
+
+struct Descriptor {
+ int *datum;
+ long int x;
+ int xi;
+ long int arr[1][30];
+};
+
+int map_struct() {
+ Descriptor dat = Descriptor();
+ dat.xi = 3;
+ dat.arr[0][0] = 1;
+
+ #pragma omp target enter data map(to: dat.datum[:10]) map(to: dat)
+
+ #pragma omp target
+ {
+ dat.xi = 4;
+ dat.datum[dat.arr[0][0]] = dat.xi;
+ }
+
+ #pragma omp target exit data map(from: dat)
+
+ return dat.xi;
+}
+
+#endif
+// CHECK-LABEL: define dso_local noundef signext i32 @_Z10map_structv(
+// CHECK-SAME: ) #[[ATTR0:[0-9]+]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: [[DAT:%.*]] = alloca [[STRUCT_DESCRIPTOR:%.*]], align 8
+// CHECK-NEXT: [[DOTOFFLOAD_BASEPTRS:%.*]] = alloca [3 x ptr], align 8
+// CHECK-NEXT: [[DOTOFFLOAD_PTRS:%.*]] = alloca [3 x ptr], align 8
+// CHECK-NEXT: [[DOTOFFLOAD_MAPPERS:%.*]] = alloca [3 x ptr], align 8
+// CHECK-NEXT: [[DOTOFFLOAD_SIZES:%.*]] = alloca [3 x i64], align 8
+// CHECK-NEXT: [[DOTOFFLOAD_BASEPTRS4:%.*]] = alloca [1 x ptr], align 8
+// CHECK-NEXT: [[DOTOFFLOAD_PTRS5:%.*]] = alloca [1 x ptr], align 8
+// CHECK-NEXT: [[DOTOFFLOAD_MAPPERS6:%.*]] = alloca [1 x ptr], align 8
+// CHECK-NEXT: [[KERNEL_ARGS:%.*]] = alloca [[STRUCT___TGT_KERNEL_ARGUMENTS:%.*]], align 8
+// CHECK-NEXT: [[DOTOFFLOAD_BASEPTRS7:%.*]] = alloca [1 x ptr], align 8
+// CHECK-NEXT: [[DOTOFFLOAD_PTRS8:%.*]] = alloca [1 x ptr], align 8
+// CHECK-NEXT: [[DOTOFFLOAD_MAPPERS9:%.*]] = alloca [1 x ptr], align 8
+// CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[DAT]], i8 0, i64 264, i1 false)
+// CHECK-NEXT: [[XI:%.*]] = getelementptr inbounds [[STRUCT_DESCRIPTOR]], ptr [[DAT]], i32 0, i32 2
+// CHECK-NEXT: store i32 3, ptr [[XI]], align 8
+// CHECK-NEXT: [[ARR:%.*]] = getelementptr inbounds [[STRUCT_DESCRIPTOR]], ptr [[DAT]], i32 0, i32 3
+// CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [1 x [30 x i64]], ptr [[ARR]], i64 0, i64 0
+// CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds [30 x i64], ptr [[ARRAYIDX]], i64 0, i64 0
+// CHECK-NEXT: store i64 1, ptr [[ARRAYIDX1]], align 8
+// CHECK-NEXT: [[DATUM:%.*]] = getelementptr inbounds [[STRUCT_DESCRIPTOR]], ptr [[DAT]], i32 0, i32 0
+// CHECK-NEXT: [[DATUM2:%.*]] = getelementptr inbounds [[STRUCT_DESCRIPTOR]], ptr [[DAT]], i32 0, i32 0
+// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[DATUM2]], align 8
+// CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, ptr [[TMP0]], i64 0
+// CHECK-NEXT: [[TMP1:%.*]] = getelementptr [[STRUCT_DESCRIPTOR]], ptr [[DAT]], i32 1
+// CHECK-NEXT: [[TMP2:%.*]] = ptrtoint ptr [[TMP1]] to i64
+// CHECK-NEXT: [[TMP3:%.*]] = ptrtoint ptr [[DAT]] to i64
+// CHECK-NEXT: [[TMP4:%.*]] = sub i64 [[TMP2]], [[TMP3]]
+// CHECK-NEXT: [[TMP5:%.*]] = sdiv exact i64 [[TMP4]], ptrtoint (ptr getelementptr (i8, ptr null, i32 1) to i64)
+// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[DOTOFFLOAD_SIZES]], ptr align 8 @.offload_sizes, i64 24, i1 false)
+// CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds [3 x ptr], ptr [[DOTOFFLOAD_BASEPTRS]], i32 0, i32 0
+// CHECK-NEXT: store ptr [[DAT]], ptr [[TMP6]], align 8
+// CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds [3 x ptr], ptr [[DOTOFFLOAD_PTRS]], i32 0, i32 0
+// CHECK-NEXT: store ptr [[DAT]], ptr [[TMP7]], align 8
+// CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds [3 x i64], ptr [[DOTOFFLOAD_SIZES]], i32 0, i32 0
+// CHECK-NEXT: store i64 [[TMP5]], ptr [[TMP8]], align 8
+// CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds [3 x ptr], ptr [[DOTOFFLOAD_MAPPERS]], i64 0, i64 0
+// CHECK-NEXT: store ptr null, ptr [[TMP9]], align 8
+// CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds [3 x ptr], ptr [[DOTOFFLOAD_BASEPTRS]], i32 0, i32 1
+// CHECK-NEXT: store ptr [[DAT]], ptr [[TMP10]], align 8
+// CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds [3 x ptr], ptr [[DOTOFFLOAD_PTRS]], i32 0, i32 1
+// CHECK-NEXT: store ptr [[DAT]], ptr [[TMP11]], align 8
+// CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds [3 x ptr], ptr [[DOTOFFLOAD_MAPPERS]], i64 0, i64 1
+// CHECK-NEXT: store ptr null, ptr [[TMP12]], align 8
+// CHECK-NEXT: [[TMP13:%.*]] = getelementptr inbounds [3 x ptr], ptr [[DOTOFFLOAD_BASEPTRS]], i32 0, i32 2
+// CHECK-NEXT: store ptr [[DATUM]], ptr [[TMP13]], align 8
+// CHECK-NEXT: [[TMP14:%.*]] = getelementptr inbounds [3 x ptr], ptr [[DOTOFFLOAD_PTRS]], i32 0, i32 2
+// CHECK-NEXT: store ptr [[ARRAYIDX3]], ptr [[TMP14]], align 8
+// CHECK-NEXT: [[TMP15:%.*]] = getelementptr inbounds [3 x ptr], ptr [[DOTOFFLOAD_MAPPERS]], i64 0, i64 2
+// CHECK-NEXT: store ptr null, ptr [[TMP15]], align 8
+// CHECK-NEXT: [[TMP16:%.*]] = getelementptr inbounds [3 x ptr], ptr [[DOTOFFLOAD_BASEPTRS]], i32 0, i32 0
+// CHECK-NEXT: [[TMP17:%.*]] = getelementptr inbounds [3 x ptr], ptr [[DOTOFFLOAD_PTRS]], i32 0, i32 0
+// CHECK-NEXT: [[TMP18:%.*]] = getelementptr inbounds [3 x i64], ptr [[DOTOFFLOAD_SIZES]], i32 0, i32 0
+// CHECK-NEXT: call void @__tgt_target_data_begin_mapper(ptr @[[GLOB1:[0-9]+]], i64 -1, i32 3, ptr [[TMP16]], ptr [[TMP17]], ptr [[TMP18]], ptr @.offload_maptypes, ptr null, ptr null)
+// CHECK-NEXT: [[TMP19:%.*]] = getelementptr inbounds [1 x ptr], ptr [[DOTOFFLOAD_BASEPTRS4]], i32 0, i32 0
+// CHECK-NEXT: store ptr [[DAT]], ptr [[TMP19]], align 8
+// CHECK-NEXT: [[TMP20:%.*]] = getelementptr inbounds [1 x ptr], ptr [[DOTOFFLOAD_PTRS5]], i32 0, i32 0
+// CHECK-NEXT: store ptr [[DAT]], ptr [[TMP20]], align 8
+// CHECK-NEXT: [[TMP21:%.*]] = getelementptr inbounds [1 x ptr], ptr [[DOTOFFLOAD_MAPPERS6]], i64 0, i64 0
+// CHECK-NEXT: store ptr null, ptr [[TMP21]], align 8
+// CHECK-NEXT: [[TMP22:%.*]] = getelementptr inbounds [1 x ptr], ptr [[DOTOFFLOAD_BASEPTRS4]], i32 0, i32 0
+// CHECK-NEXT: [[TMP23:%.*]] = getelementptr inbounds [1 x ptr], ptr [[DOTOFFLOAD_PTRS5]], i32 0, i32 0
+// CHECK-NEXT: [[TMP24:%.*]] = getelementptr inbounds [[STRUCT___TGT_KERNEL_ARGUMENTS]], ptr [[KERNEL_ARGS]], i32 0, i32 0
+// CHECK-NEXT: store i32 2, ptr [[TMP24]], align 4
+// CHECK-NEXT: [[TMP25:%.*]] = getelementptr inbounds [[STRUCT___TGT_KERNEL_ARGUMENTS]], ptr [[KERNEL_ARGS]], i32 0, i32 1
+// CHECK-NEXT: store i32 1, ptr [[TMP25]], align 4
+// CHECK-NEXT: [[TMP26:%.*]] = getelementptr inbounds [[STRUCT___TGT_KERNEL_ARGUMENTS]], ptr [[KERNEL_ARGS]], i32 0, i32 2
+// CHECK-NEXT: store ptr [[TMP22]], ptr [[TMP26]], align 8
+// CHECK-NEXT: [[TMP27:%.*]] = getelementptr inbounds [[STRUCT___TGT_KERNEL_ARGUMENTS]], ptr [[KERNEL_ARGS]], i32 0, i32 3
+// CHECK-NEXT: store ptr [[TMP23]], ptr [[TMP27]], align 8
+// CHECK-NEXT: [[TMP28:%.*]] = getelementptr inbounds [[STRUCT___TGT_KERNEL_ARGUMENTS]], ptr [[KERNEL_ARGS]], i32 0, i32 4
+// CHECK-NEXT: store ptr @.offload_sizes.1, ptr [[TMP28]], align 8
+// CHECK-NEXT: [[TMP29:%.*]] = getelementptr inbounds [[STRUCT___TGT_KERNEL_ARGUMENTS]], ptr [[KERNEL_ARGS]], i32 0, i32 5
+// CHECK-NEXT: store ptr @.offload_maptypes.2, ptr [[TMP29]], align 8
+// CHECK-NEXT: [[TMP30:%.*]] = getelementptr inbounds [[STRUCT___TGT_KERNEL_ARGUMENTS]], ptr [[KERNEL_ARGS]], i32 0, i32 6
+// CHECK-NEXT: store ptr null, ptr [[TMP30]], align 8
+// CHECK-NEXT: [[TMP31:%.*]] = getelementptr inbounds [[STRUCT___TGT_KERNEL_ARGUMENTS]], ptr [[KERNEL_ARGS]], i32 0, i32 7
+// CHECK-NEXT: store ptr null, ptr [[TMP31]], align 8
+// CHECK-NEXT: [[TMP32:%.*]] = getelementptr inbounds [[STRUCT___TGT_KERNEL_ARGUMENTS]], ptr [[KERNEL_ARGS]], i32 0, i32 8
+// CHECK-NEXT: store i64 0, ptr [[TMP32]], align 8
+// CHECK-NEXT: [[TMP33:%.*]] = getelementptr inbounds [[STRUCT___TGT_KERNEL_ARGUMENTS]], ptr [[KERNEL_ARGS]], i32 0, i32 9
+// CHECK-NEXT: store i64 0, ptr [[TMP33]], align 8
+// CHECK-NEXT: [[TMP34:%.*]] = getelementptr inbounds [[STRUCT___TGT_KERNEL_ARGUMENTS]], ptr [[KERNEL_ARGS]], i32 0, i32 10
+// CHECK-NEXT: store [3 x i32] [i32 -1, i32 0, i32 0], ptr [[TMP34]], align 4
+// CHECK-NEXT: [[TMP35:%.*]] = getelementptr inbounds [[STRUCT___TGT_KERNEL_ARGUMENTS]], ptr [[KERNEL_ARGS]], i32 0, i32 11
+// CHECK-NEXT: store [3 x i32] zeroinitializer, ptr [[TMP35]], align 4
+// CHECK-NEXT: [[TMP36:%.*]] = getelementptr inbounds [[STRUCT___TGT_KERNEL_ARGUMENTS]], ptr [[KERNEL_ARGS]], i32 0, i32 12
+// CHECK-NEXT: store i32 0, ptr [[TMP36]], align 4
+// CHECK-NEXT: [[TMP37:%.*]] = call i32 @__tgt_target_kernel(ptr @[[GLOB1]], i64 -1, i32 -1, i32 0, ptr @.{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}__Z10map_structv_l23.region_id, ptr [[KERNEL_ARGS]])
+// CHECK-NEXT: [[TMP38:%.*]] = icmp ne i32 [[TMP37]], 0
+// CHECK-NEXT: br i1 [[TMP38]], label [[OMP_OFFLOAD_FAILED:%.*]], label [[OMP_OFFLOAD_CONT:%.*]]
+// CHECK: omp_offload.failed:
+// CHECK-NEXT: call void @{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}__Z10map_structv_l23(ptr [[DAT]]) #[[ATTR3:[0-9]+]]
+// CHECK-NEXT: br label [[OMP_OFFLOAD_CONT]]
+// CHECK: omp_offload.cont:
+// CHECK-NEXT: [[TMP39:%.*]] = getelementptr inbounds [1 x ptr], ptr [[DOTOFFLOAD_BASEPTRS7]], i32 0, i32 0
+// CHECK-NEXT: store ptr [[DAT]], ptr [[TMP39]], align 8
+// CHECK-NEXT: [[TMP40:%.*]] = getelementptr inbounds [1 x ptr], ptr [[DOTOFFLOAD_PTRS8]], i32 0, i32 0
+// CHECK-NEXT: store ptr [[DAT]], ptr [[TMP40]], align 8
+// CHECK-NEXT: [[TMP41:%.*]] = getelementptr inbounds [1 x ptr], ptr [[DOTOFFLOAD_MAPPERS9]], i64 0, i64 0
+// CHECK-NEXT: store ptr null, ptr [[TMP41]], align 8
+// CHECK-NEXT: [[TMP42:%.*]] = getelementptr inbounds [1 x ptr], ptr [[DOTOFFLOAD_BASEPTRS7]], i32 0, i32 0
+// CHECK-NEXT: [[TMP43:%.*]] = getelementptr inbounds [1 x ptr], ptr [[DOTOFFLOAD_PTRS8]], i32 0, i32 0
+// CHECK-NEXT: call void @__tgt_target_data_end_mapper(ptr @[[GLOB1]], i64 -1, i32 1, ptr [[TMP42]], ptr [[TMP43]], ptr @.offload_sizes.3, ptr @.offload_maptypes.4, ptr null, ptr null)
+// CHECK-NEXT: [[XI10:%.*]] = getelementptr inbounds [[STRUCT_DESCRIPTOR]], ptr [[DAT]], i32 0, i32 2
+// CHECK-NEXT: [[TMP44:%.*]] = load i32, ptr [[XI10]], align 8
+// CHECK-NEXT: ret i32 [[TMP44]]
+//
+//
+// CHECK-LABEL: define internal void @{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}__Z10map_structv_l23(
+// CHECK-SAME: ptr noundef nonnull align 8 dereferenceable(264) [[DAT:%.*]]) #[[ATTR4:[0-9]+]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: [[DAT_ADDR:%.*]] = alloca ptr, align 8
+// CHECK-NEXT: store ptr [[DAT]], ptr [[DAT_ADDR]], align 8
+// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[DAT_ADDR]], align 8
+// CHECK-NEXT: [[XI:%.*]] = getelementptr inbounds [[STRUCT_DESCRIPTOR:%.*]], ptr [[TMP0]], i32 0, i32 2
+// CHECK-NEXT: store i32 4, ptr [[XI]], align 8
+// CHECK-NEXT: [[XI1:%.*]] = getelementptr inbounds [[STRUCT_DESCRIPTOR]], ptr [[TMP0]], i32 0, i32 2
+// CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[XI1]], align 8
+// CHECK-NEXT: [[DATUM:%.*]] = getelementptr inbounds [[STRUCT_DESCRIPTOR]], ptr [[TMP0]], i32 0, i32 0
+// CHECK-NEXT: [[TMP2:%.*]] = load ptr, ptr [[DATUM]], align 8
+// CHECK-NEXT: [[ARR:%.*]] = getelementptr inbounds [[STRUCT_DESCRIPTOR]], ptr [[TMP0]], i32 0, i32 3
+// CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [1 x [30 x i64]], ptr [[ARR]], i64 0, i64 0
+// CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds [30 x i64], ptr [[ARRAYIDX]], i64 0, i64 0
+// CHECK-NEXT: [[TMP3:%.*]] = load i64, ptr [[ARRAYIDX2]], align 8
+// CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, ptr [[TMP2]], i64 [[TMP3]]
+// CHECK-NEXT: store i32 [[TMP1]], ptr [[ARRAYIDX3]], align 4
+// CHECK-NEXT: ret void
+//
+//
+// CHECK-LABEL: define internal void @.omp_offloading.requires_reg(
+// CHECK-SAME: ) #[[ATTR5:[0-9]+]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: call void @__tgt_register_requires(i64 1)
+// CHECK-NEXT: ret void
+//
diff --git a/openmp/libomptarget/test/offloading/struct_mapping_with_pointers.cpp b/openmp/libomptarget/test/offloading/struct_mapping_with_pointers.cpp
new file mode 100644
index 000000000000000..c7ce4bade8de9a2
--- /dev/null
+++ b/openmp/libomptarget/test/offloading/struct_mapping_with_pointers.cpp
@@ -0,0 +1,114 @@
+// clang-format off
+// RUN: %libomptarget-compilexx-generic && env LIBOMPTARGET_DEBUG=1 %libomptarget-run-generic 2>&1 | %fcheck-generic
+// clang-format on
+
+#include <stdio.h>
+#include <stdlib.h>
+
+struct Descriptor {
+ int *datum;
+ long int x;
+ int *more_datum;
+ int xi;
+ int val_datum, val_more_datum;
+ long int arr[1][30];
+ int val_arr;
+};
+
+int main() {
+ Descriptor dat = Descriptor();
+ dat.datum = (int *)malloc(sizeof(int) * 10);
+ dat.more_datum = (int *)malloc(sizeof(int) * 20);
+ dat.xi = 3;
+ dat.arr[0][0] = 1;
+
+ dat.datum[7] = 7;
+ dat.more_datum[17] = 17;
+
+ /// The struct is mapped with type 0x0 when the pointer fields are mapped.
+ /// The struct is also map explicitely by the user. The second mapping by
+ /// the user must not overwrite the mapping set up for the pointer fields
+ /// when mapping the struct happens after the mapping of the pointers.
+
+ // clang-format off
+ // CHECK: Libomptarget --> Entry 0: Base=[[DAT_HST_PTR_BASE:0x.*]], Begin=[[DAT_HST_PTR_BASE]], Size=288, Type=0x0, Name=unknown
+ // CHECK: Libomptarget --> Entry 1: Base=[[DAT_HST_PTR_BASE]], Begin=[[DAT_HST_PTR_BASE]], Size=288, Type=0x1000000000001, Name=unknown
+ // CHECK: Libomptarget --> Entry 2: Base=[[DAT_HST_PTR_BASE]], Begin=[[DATUM_HST_PTR_BASE:0x.*]], Size=40, Type=0x1000000000011, Name=unknown
+ // CHECK: Libomptarget --> Entry 3: Base=[[MORE_DATUM_HST_PTR_BASE:0x.*]], Begin=[[MORE_DATUM_HST_PTR_BEGIN:0x.*]], Size=80, Type=0x1000000000011, Name=unknown
+ // clang-format on
+
+ /// The struct will be mapped in the same order as the above entries.
+
+ /// First argument is the struct itself and it will be mapped once.
+
+ // clang-format off
+ // CHECK: Libomptarget --> Looking up mapping(HstPtrBegin=[[DAT_HST_PTR_BASE]], Size=288)...
+ // CHECK: PluginInterface --> MemoryManagerTy::allocate: size 288 with host pointer [[DAT_HST_PTR_BASE]].
+ // CHECK: Libomptarget --> Creating new map entry with HstPtrBase=[[DAT_HST_PTR_BASE]], HstPtrBegin=[[DAT_HST_PTR_BASE]], TgtAllocBegin=[[DAT_DEVICE_PTR_BASE:0x.*]], TgtPtrBegin=[[DAT_DEVICE_PTR_BASE]], Size=288, DynRefCount=1, HoldRefCount=0, Name=unknown
+ // CHECK: Libomptarget --> Moving 288 bytes (hst:[[DAT_HST_PTR_BASE]]) -> (tgt:[[DAT_DEVICE_PTR_BASE]])
+ // clang-format on
+
+ /// Second argument is dat.datum:
+ // clang-format off
+ // CHECK: Libomptarget --> Looking up mapping(HstPtrBegin=[[DATUM_HST_PTR_BASE]], Size=40)...
+ // CHECK: PluginInterface --> MemoryManagerTy::allocate: size 40 with host pointer [[DATUM_HST_PTR_BASE]].
+ // CHECK: Libomptarget --> Creating new map entry with HstPtrBase=[[DATUM_HST_PTR_BASE]], HstPtrBegin=[[DATUM_HST_PTR_BASE]], TgtAllocBegin=[[DATUM_DEVICE_PTR_BASE:0x.*]], TgtPtrBegin=[[DATUM_DEVICE_PTR_BASE]], Size=40, DynRefCount=1, HoldRefCount=0, Name=unknown
+ // CHECK: Libomptarget --> Moving 40 bytes (hst:[[DATUM_HST_PTR_BASE]]) -> (tgt:[[DATUM_DEVICE_PTR_BASE]])
+ // clang-format on
+
+ /// Third argument is dat.more_datum:
+ // clang-format off
+ // CHECK: Libomptarget --> Looking up mapping(HstPtrBegin=[[MORE_DATUM_HST_PTR_BEGIN]], Size=80)...
+ // CHECK: PluginInterface --> MemoryManagerTy::allocate: size 80 with host pointer [[MORE_DATUM_HST_PTR_BEGIN]].
+ // CHECK: Libomptarget --> Creating new map entry with HstPtrBase=[[MORE_DATUM_HST_PTR_BEGIN]], HstPtrBegin=[[MORE_DATUM_HST_PTR_BEGIN]], TgtAllocBegin=[[MORE_DATUM_DEVICE_PTR_BEGIN:0x.*]], TgtPtrBegin=[[MORE_DATUM_DEVICE_PTR_BEGIN]], Size=80, DynRefCount=1, HoldRefCount=0, Name=unknown
+ // CHECK: Libomptarget --> Moving 80 bytes (hst:[[MORE_DATUM_HST_PTR_BEGIN]]) -> (tgt:[[MORE_DATUM_DEVICE_PTR_BEGIN]])
+ // clang-format on
+
+#pragma omp target enter data map(to : dat.datum[ : 10]) \
+ map(to : dat.more_datum[ : 20]) map(to : dat)
+
+ /// Checks induced by having a target region:
+ // clang-format off
+ // CHECK: Libomptarget --> Entry 0: Base=[[DAT_HST_PTR_BASE]], Begin=[[DAT_HST_PTR_BASE]], Size=288, Type=0x223, Name=unknown
+ // CHECK: Libomptarget --> Mapping exists (implicit) with HstPtrBegin=[[DAT_HST_PTR_BASE]], TgtPtrBegin=[[DAT_DEVICE_PTR_BASE]], Size=288, DynRefCount=2 (incremented), HoldRefCount=0, Name=unknown
+ // CHECK: Libomptarget --> Obtained target argument [[DAT_DEVICE_PTR_BASE]] from host pointer [[DAT_HST_PTR_BASE]]
+ // clang-format on
+
+#pragma omp target
+ {
+ dat.xi = 4;
+ dat.datum[7]++;
+ dat.more_datum[17]++;
+ dat.val_datum = dat.datum[7];
+ dat.val_more_datum = dat.more_datum[17];
+ dat.datum[dat.arr[0][0]] = dat.xi;
+ dat.val_arr = dat.datum[dat.arr[0][0]];
+ }
+
+ /// Post-target region checks:
+ // clang-format off
+ // CHECK: Libomptarget --> Mapping exists with HstPtrBegin=[[DAT_HST_PTR_BASE]], TgtPtrBegin=[[DAT_DEVICE_PTR_BASE]], Size=288, DynRefCount=1 (decremented), HoldRefCount=0
+ // clang-format on
+
+#pragma omp target exit data map(from : dat)
+
+ /// Target data end checks:
+ // clang-format off
+ // CHECK: Libomptarget --> Mapping exists with HstPtrBegin=[[DAT_HST_PTR_BASE]], TgtPtrBegin=[[DAT_DEVICE_PTR_BASE]], Size=288, DynRefCount=0 (decremented, delayed deletion), HoldRefCount=0
+ // CHECK: Libomptarget --> Moving 288 bytes (tgt:[[DAT_DEVICE_PTR_BASE]]) -> (hst:[[DAT_HST_PTR_BASE]])
+ // clang-format on
+
+ // CHECK: dat.xi = 4
+ // CHECK: dat.val_datum = 8
+ // CHECK: dat.val_more_datum = 18
+ // CHECK: dat.datum[dat.arr[0][0]] = 0
+ // CHECK: dat.val_arr = 4
+
+ printf("dat.xi = %d\n", dat.xi);
+ printf("dat.val_datum = %d\n", dat.val_datum);
+ printf("dat.val_more_datum = %d\n", dat.val_more_datum);
+ printf("dat.datum[dat.arr[0][0]] = %d\n", dat.datum[dat.arr[0][0]]);
+ printf("dat.val_arr = %d\n", dat.val_arr);
+
+ return 0;
+}
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