llvm-project/clang/test/OpenMP/target_map_pointer_defalut_mapper_codegen.cpp
jyu2-git 6848b99d17
[OpenMP][Map][NFC] improve map chain. (#101903)
This is for mapping structure has data members, which have 'default'
mappers, where needs to map these members individually using
their 'default' mappers.

example map(tofrom: spp[0][0]), look at test case.

currently create 6 maps:
1>&spp, &spp[0],  size 8, maptype TARGET_PARAM | FROM | TO
2>&spp[0], &spp[0][0], size(D)with maptype OMP_MAP_NONE, nullptr
3>&spp[0], &spp[0][0].e, size(e) with maptype MEMBER_OF  | FROM  | TO
4>&spp[0], &spp[0][0].h, size(h) with maptype MEMBER_OF  | FROM  | TO
5>&spp, &spp[0],size(8), maptype MEMBER_OF | IMPLICIT | FROM  | TO
6>&spp[0], &spp[0][0].f size(D) with maptype MEMBER_OF |IMPLICIT
|PTR_AND_OBJ, @.omp_mapper._ZTS1C.default

maptype with/without OMP_MAP_PTR_AND_OBJ
   For "2" and "5", since it is mapping pointer and pointee pair,
   PTR_AND_OBJ should be set
   But for "6" the PTR_AND_OBJ should not set.
However, "5" is duplicate with "1" can be skip.

To fix "2", during the call to emitCombinEntry with false with
NotTargetParams
instead !PartialStruct.PreliminaryMapData.BasePointers.empty(), since
all captures need to be TARGET_PARAM
And inside emitCombineEntry:  check
!PartialStruct.PreliminaryMapData.BasePointers.empty() to set
PTR_AND_OBJ

For "5" and "6": the fix in generateInfoForComponentList:
Add new variable IsPartialMapped set with
!PartialStruct.PreliminaryMapData.BasePointers.empty();

When that is true, skip generate "5" and don"t set IsExpressionFirstInfo
to false, so that PTR_AND_OBJ would be set.

After fix: will have 5 maps instead 6
1>&spp, &spp[0],  size 8, maptype TARGET_PARAM | FROM | TO
2>&spp[0], &spp[0][0], size(D), maptype PTR_AND_OBJ, nullptr
3>&spp[0], &spp[0][0].e, size(e), maptype MEMBER_OF_2  | FROM  | TO
4>&spp[0], &spp[0][0].h, size(h), maptype MEMBER_OF_2  | FROM  | TO
5>&spp[0], &spp[0][0].f size(32), maptype MEMBER_OF_2 | IMPLICIT,
@.omp_mapper._ZTS1C.default

For map(sppp[0][0][0]):
after fix: will have 6 maps instead 8.

https://github.com/llvm/llvm-project/pull/101903
2024-08-05 08:01:11 -07:00

51 lines
2.0 KiB
C++

// RUN: %clang_cc1 -verify -fopenmp -fopenmp-targets=powerpc64le-ibm-linux-gnu -x c++ -triple powerpc64le-unknown-unknown -emit-llvm %s -o - | FileCheck %s
// RUN: %clang_cc1 -fopenmp -fopenmp-targets=powerpc64le-ibm-linux-gnu -x c++ -std=c++11 -triple powerpc64le-unknown-unknown -emit-pch -o %t %s
// RUN: %clang_cc1 -fopenmp -fopenmp-targets=powerpc64le-ibm-linux-gnu -x c++ -triple powerpc64le-unknown-unknown -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s
// expected-no-diagnostics
#ifndef HEADER
#define HEADER
typedef struct {
int a;
} C;
#pragma omp declare mapper(C s) map(to : s.a)
typedef struct {
int e;
C f;
int h;
} D;
D s;
void foo() {
s.e = 111;
s.h = 10;
D *sp = &s;
D **spp = &sp;
D ***sppp = &spp;
#pragma omp target map(tofrom : spp[0][0])
{
spp[0][0].e = 333;
}
#pragma omp target map(tofrom : sp[0])
{
sp[0].e = 444;
}
#pragma omp target map(tofrom : sppp[0][0][0])
{
sppp[0][0][0].e = 555;
}
}
#endif
// CHECK: @.offload_sizes = private unnamed_addr constant [5 x i64] [i64 8, i64 0, i64 0, i64 0, i64 4]
// CHECK-NOT: @.offload_sizes = private unnamed_addr constant [6 x i64] [i64 8, i64 0, i64 0, i64 0, i64 8, i64 4]
// CHECK: @.offload_maptypes = private unnamed_addr constant [5 x i64] [i64 35, i64 16, i64 562949953421315, i64 562949953421315, i64 562949953421827]
// CHECK-NOT: .offload_maptypes = private unnamed_addr constant [6 x i64] [i64 35, i64 0, i64 562949953421315, i64 562949953421315, i64 562949953421827, i64 562949953421843]
// CHECK: @.offload_sizes.1 = private unnamed_addr constant [4 x i64] [i64 0, i64 0, i64 0, i64 4]
// CHECK: @.offload_maptypes.2 = private unnamed_addr constant [4 x i64] [i64 32, i64 281474976710659, i64 281474976710659, i64 281474976711171]
// CHECK: @.offload_sizes.3 = private unnamed_addr constant [6 x i64] [i64 8, i64 8, i64 0, i64 0, i64 0, i64 4]
// CHECK: @.offload_maptypes.4 = private unnamed_addr constant [6 x i64] [i64 35, i64 16, i64 16, i64 844424930131971, i64 844424930131971, i64 844424930132483]