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Revert "Add mean_anyway to hpc config" 

my bad, wrong repo ,so sorry.

This reverts commit 0b9350f3da.
This commit is contained in:
Ron Lieberman 2022-11-29 15:19:44 -06:00
parent 2a6701444a
commit b09a5e5cb3
8 changed files with 27 additions and 172 deletions
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2
openmp/libomptarget/DeviceRTL/src/Mapping.cpp
View File

@ -16,7 +16,7 @@
#include "Utils.h" #include "Utils.h"
#pragma omp begin declare target device_type(nohost) #pragma omp begin declare target device_type(nohost)
extern const uint16_t __oclc_ABI_version;
#include "llvm/Frontend/OpenMP/OMPGridValues.h" #include "llvm/Frontend/OpenMP/OMPGridValues.h"
using namespace _OMP; using namespace _OMP;

6
openmp/libomptarget/plugins/amdgpu/impl/get_elf_mach_gfx_name.cpp
View File

@ -11,7 +11,6 @@
// identifier) and contains more up to date values for the enum checked here. // identifier) and contains more up to date values for the enum checked here.
// rtl.cpp uses the system elf.h. // rtl.cpp uses the system elf.h.
#include "llvm/BinaryFormat/ELF.h" #include "llvm/BinaryFormat/ELF.h"
using namespace llvm::ELF;
const char *get_elf_mach_gfx_name(uint32_t EFlags) { const char *get_elf_mach_gfx_name(uint32_t EFlags) {
using namespace llvm::ELF; using namespace llvm::ELF;
@ -79,8 +78,3 @@ const char *get_elf_mach_gfx_name(uint32_t EFlags) {
return "--unknown gfx"; return "--unknown gfx";
} }
} }
const uint16_t implicitArgsSize(uint16_t Version) {
return Version < ELFABIVERSION_AMDGPU_HSA_V5 ? IMPLICITARGS::COV4_SIZE
: IMPLICITARGS::COV5_SIZE;
}

45
openmp/libomptarget/plugins/amdgpu/impl/get_elf_mach_gfx_name.h
View File

@ -12,49 +12,4 @@
const char *get_elf_mach_gfx_name(uint32_t EFlags); const char *get_elf_mach_gfx_name(uint32_t EFlags);
enum IMPLICITARGS : uint16_t {
COV4_SIZE = 56,
COV4_HOSTCALL_PTR_OFFSET = 24,
HOSTCALL_PTR_SIZE = 8,
COV5_SIZE = 256,
COV5_BLOCK_COUNT_X_OFFSET = 0,
COV5_BLOCK_COUNT_X_SIZE = 4,
COV5_BLOCK_COUNT_Y_OFFSET = 4,
COV5_BLOCK_COUNT_Y_SIZE = 4,
COV5_BLOCK_COUNT_Z_OFFSET = 8,
COV5_BLOCK_COUNT_Z_SIZE = 4,
COV5_GROUP_SIZE_X_OFFSET = 12,
COV5_GROUP_SIZE_X_SIZE = 2,
COV5_GROUP_SIZE_Y_OFFSET = 14,
COV5_GROUP_SIZE_Y_SIZE = 2,
COV5_GROUP_SIZE_Z_OFFSET = 16,
COV5_GROUP_SIZE_Z_SIZE = 2,
COV5_REMAINDER_X_OFFSET = 18,
COV5_REMAINDER_X_SIZE = 2,
COV5_REMAINDER_Y_OFFSET = 20,
COV5_REMAINDER_Y_SIZE = 2,
COV5_REMAINDER_Z_OFFSET = 22,
COV5_REMAINDER_Z_SIZE = 2,
COV5_GRID_DIMS_OFFSET = 64,
COV5_GRID_DIMS_SIZE = 2,
COV5_HOSTCALL_PTR_OFFSET = 80,
COV5_HEAPV1_PTR_OFFSET = 96,
COV5_HEAPV1_PTR_SIZE = 8
};
const uint16_t implicitArgsSize(uint16_t Version);
#endif #endif

11
openmp/libomptarget/plugins/amdgpu/impl/internal.h
View File

@ -33,6 +33,17 @@
#define MAX_NUM_KERNELS (1024 * 16) #define MAX_NUM_KERNELS (1024 * 16)
typedef struct impl_implicit_args_s {
uint64_t offset_x;
uint64_t offset_y;
uint64_t offset_z;
uint64_t hostcall_ptr;
uint64_t unused0;
uint64_t unused1;
uint64_t unused2;
} impl_implicit_args_t;
static_assert(sizeof(impl_implicit_args_t) == 56, "");
// ---------------------- Kernel Start ------------- // ---------------------- Kernel Start -------------
typedef struct atl_kernel_info_s { typedef struct atl_kernel_info_s {
uint64_t kernel_object; uint64_t kernel_object;

45
openmp/libomptarget/plugins/amdgpu/impl/system.cpp
View File

@ -67,17 +67,6 @@ public:
HiddenMultiGridSyncArg, HiddenMultiGridSyncArg,
HiddenHostcallBuffer, HiddenHostcallBuffer,
HiddenHeapV1, HiddenHeapV1,
HiddenBlockCountX,
HiddenBlockCountY,
HiddenBlockCountZ,
HiddenGroupSizeX,
HiddenGroupSizeY,
HiddenGroupSizeZ,
HiddenRemainderX,
HiddenRemainderY,
HiddenRemainderZ,
HiddenGridDims,
HiddenQueuePtr,
Unknown Unknown
}; };
@ -113,19 +102,7 @@ static const std::map<std::string, KernelArgMD::ValueKind> ArgValueKind = {
{"hidden_multigrid_sync_arg", {"hidden_multigrid_sync_arg",
KernelArgMD::ValueKind::HiddenMultiGridSyncArg}, KernelArgMD::ValueKind::HiddenMultiGridSyncArg},
{"hidden_hostcall_buffer", KernelArgMD::ValueKind::HiddenHostcallBuffer}, {"hidden_hostcall_buffer", KernelArgMD::ValueKind::HiddenHostcallBuffer},
{"hidden_heap_v1", KernelArgMD::ValueKind::HiddenHeapV1}, {"hidden_heap_v1", KernelArgMD::ValueKind::HiddenHeapV1}};
{"hidden_block_count_x", KernelArgMD::ValueKind::HiddenBlockCountX},
{"hidden_block_count_y", KernelArgMD::ValueKind::HiddenBlockCountY},
{"hidden_block_count_z", KernelArgMD::ValueKind::HiddenBlockCountZ},
{"hidden_group_size_x", KernelArgMD::ValueKind::HiddenGroupSizeX},
{"hidden_group_size_y", KernelArgMD::ValueKind::HiddenGroupSizeY},
{"hidden_group_size_z", KernelArgMD::ValueKind::HiddenGroupSizeZ},
{"hidden_remainder_x", KernelArgMD::ValueKind::HiddenRemainderX},
{"hidden_remainder_y", KernelArgMD::ValueKind::HiddenRemainderY},
{"hidden_remainder_z", KernelArgMD::ValueKind::HiddenRemainderZ},
{"hidden_grid_dims", KernelArgMD::ValueKind::HiddenGridDims},
{"hidden_queue_ptr", KernelArgMD::ValueKind::HiddenQueuePtr},
};
namespace core { namespace core {
@ -187,17 +164,6 @@ static bool isImplicit(KernelArgMD::ValueKind value_kind) {
case KernelArgMD::ValueKind::HiddenMultiGridSyncArg: case KernelArgMD::ValueKind::HiddenMultiGridSyncArg:
case KernelArgMD::ValueKind::HiddenHostcallBuffer: case KernelArgMD::ValueKind::HiddenHostcallBuffer:
case KernelArgMD::ValueKind::HiddenHeapV1: case KernelArgMD::ValueKind::HiddenHeapV1:
case KernelArgMD::ValueKind::HiddenBlockCountX:
case KernelArgMD::ValueKind::HiddenBlockCountY:
case KernelArgMD::ValueKind::HiddenBlockCountZ:
case KernelArgMD::ValueKind::HiddenGroupSizeX:
case KernelArgMD::ValueKind::HiddenGroupSizeY:
case KernelArgMD::ValueKind::HiddenGroupSizeZ:
case KernelArgMD::ValueKind::HiddenRemainderX:
case KernelArgMD::ValueKind::HiddenRemainderY:
case KernelArgMD::ValueKind::HiddenRemainderZ:
case KernelArgMD::ValueKind::HiddenGridDims:
case KernelArgMD::ValueKind::HiddenQueuePtr:
return true; return true;
default: default:
return false; return false;
@ -507,7 +473,8 @@ static hsa_status_t get_code_object_custom_metadata(
size_t new_offset = lcArg.offset_; size_t new_offset = lcArg.offset_;
size_t padding = new_offset - offset; size_t padding = new_offset - offset;
offset = new_offset; offset = new_offset;
DP("Arg[%lu] \"%s\" (%u, %u)\n", i, lcArg.name_.c_str(), lcArg.size_,
lcArg.offset_);
offset += lcArg.size_; offset += lcArg.size_;
// check if the arg is a hidden/implicit arg // check if the arg is a hidden/implicit arg
@ -515,13 +482,9 @@ static hsa_status_t get_code_object_custom_metadata(
if (!isImplicit(lcArg.valueKind_)) { if (!isImplicit(lcArg.valueKind_)) {
info.explicit_argument_count++; info.explicit_argument_count++;
kernel_explicit_args_size += lcArg.size_; kernel_explicit_args_size += lcArg.size_;
DP("Explicit Kernel Arg[%lu] \"%s\" (%u, %u)\n", i,
lcArg.name_.c_str(), lcArg.size_, lcArg.offset_);
} else { } else {
info.implicit_argument_count++; info.implicit_argument_count++;
hasHiddenArgs = true; hasHiddenArgs = true;
DP("Implicit Kernel Arg[%lu] \"%s\" (%u, %u)\n", i,
lcArg.name_.c_str(), lcArg.size_, lcArg.offset_);
} }
kernel_explicit_args_size += padding; kernel_explicit_args_size += padding;
} }
@ -529,7 +492,7 @@ static hsa_status_t get_code_object_custom_metadata(
// TODO: Probably don't want this arithmetic // TODO: Probably don't want this arithmetic
info.kernel_segment_size = info.kernel_segment_size =
(!hasHiddenArgs ? kernel_explicit_args_size : kernel_segment_size); (hasHiddenArgs ? kernel_explicit_args_size : kernel_segment_size);
DP("[%s: kernarg seg size] (%lu --> %u)\n", kernelName.c_str(), DP("[%s: kernarg seg size] (%lu --> %u)\n", kernelName.c_str(),
kernel_segment_size, info.kernel_segment_size); kernel_segment_size, info.kernel_segment_size);

86
openmp/libomptarget/plugins/amdgpu/src/rtl.cpp
View File

@ -124,10 +124,9 @@ public:
uint32_t KernargSegmentSize; uint32_t KernargSegmentSize;
void *KernargRegion = nullptr; void *KernargRegion = nullptr;
std::queue<int> FreeKernargSegments; std::queue<int> FreeKernargSegments;
uint16_t CodeObjectVersion;
uint32_t kernargSizeIncludingImplicit() { uint32_t kernargSizeIncludingImplicit() {
return KernargSegmentSize + implicitArgsSize(CodeObjectVersion); return KernargSegmentSize + sizeof(impl_implicit_args_t);
} }
~KernelArgPool() { ~KernelArgPool() {
@ -144,10 +143,8 @@ public:
KernelArgPool(const KernelArgPool &) = delete; KernelArgPool(const KernelArgPool &) = delete;
KernelArgPool(KernelArgPool &&) = delete; KernelArgPool(KernelArgPool &&) = delete;
KernelArgPool(uint32_t KernargSegmentSize, hsa_amd_memory_pool_t &MemoryPool, KernelArgPool(uint32_t KernargSegmentSize, hsa_amd_memory_pool_t &MemoryPool)
uint16_t CodeObjectVersion) : KernargSegmentSize(KernargSegmentSize) {
: KernargSegmentSize(KernargSegmentSize),
CodeObjectVersion(CodeObjectVersion) {
// impl uses one pool per kernel for all gpus, with a fixed upper size // impl uses one pool per kernel for all gpus, with a fixed upper size
// preserving that exact scheme here, including the queue<int> // preserving that exact scheme here, including the queue<int>
@ -231,16 +228,16 @@ struct KernelTy {
KernelTy(llvm::omp::OMPTgtExecModeFlags ExecutionMode, int16_t ConstWgSize, KernelTy(llvm::omp::OMPTgtExecModeFlags ExecutionMode, int16_t ConstWgSize,
int32_t DeviceId, void *CallStackAddr, const char *Name, int32_t DeviceId, void *CallStackAddr, const char *Name,
uint32_t KernargSegmentSize, uint32_t KernargSegmentSize,
hsa_amd_memory_pool_t &KernArgMemoryPool, uint16_t CodeObjectVersion) hsa_amd_memory_pool_t &KernArgMemoryPool)
: ExecutionMode(ExecutionMode), ConstWGSize(ConstWgSize), : ExecutionMode(ExecutionMode), ConstWGSize(ConstWgSize),
DeviceId(DeviceId), CallStackAddr(CallStackAddr), Name(Name) { DeviceId(DeviceId), CallStackAddr(CallStackAddr), Name(Name) {
DP("Construct kernelinfo: ExecMode %d\n", ExecutionMode); DP("Construct kernelinfo: ExecMode %d\n", ExecutionMode);
std::string N(Name); std::string N(Name);
if (KernelArgPoolMap.find(N) == KernelArgPoolMap.end()) { if (KernelArgPoolMap.find(N) == KernelArgPoolMap.end()) {
KernelArgPoolMap.insert(std::make_pair( KernelArgPoolMap.insert(
N, std::unique_ptr<KernelArgPool>(new KernelArgPool( std::make_pair(N, std::unique_ptr<KernelArgPool>(new KernelArgPool(
KernargSegmentSize, KernArgMemoryPool, CodeObjectVersion)))); KernargSegmentSize, KernArgMemoryPool))));
} }
} }
}; };
@ -477,7 +474,6 @@ public:
std::vector<int> WarpSize; std::vector<int> WarpSize;
std::vector<std::string> GPUName; std::vector<std::string> GPUName;
std::vector<std::string> TargetID; std::vector<std::string> TargetID;
uint16_t CodeObjectVersion;
// OpenMP properties // OpenMP properties
std::vector<int> NumTeams; std::vector<int> NumTeams;
@ -491,7 +487,6 @@ public:
// Resource pools // Resource pools
SignalPoolT FreeSignalPool; SignalPoolT FreeSignalPool;
std::vector<void *> PreallocatedDeviceHeap;
bool HostcallRequired = false; bool HostcallRequired = false;
@ -866,6 +861,7 @@ public:
"Unexpected device id!"); "Unexpected device id!");
FuncGblEntries[DeviceId].emplace_back(); FuncGblEntries[DeviceId].emplace_back();
FuncOrGblEntryTy &E = FuncGblEntries[DeviceId].back(); FuncOrGblEntryTy &E = FuncGblEntries[DeviceId].back();
// KernelArgPoolMap.clear();
E.Entries.clear(); E.Entries.clear();
E.Table.EntriesBegin = E.Table.EntriesEnd = 0; E.Table.EntriesBegin = E.Table.EntriesEnd = 0;
} }
@ -1036,7 +1032,6 @@ public:
SymbolInfoTable.resize(NumberOfDevices); SymbolInfoTable.resize(NumberOfDevices);
DeviceCoarseGrainedMemoryPools.resize(NumberOfDevices); DeviceCoarseGrainedMemoryPools.resize(NumberOfDevices);
DeviceFineGrainedMemoryPools.resize(NumberOfDevices); DeviceFineGrainedMemoryPools.resize(NumberOfDevices);
PreallocatedDeviceHeap.resize(NumberOfDevices);
Err = setupDevicePools(HSAAgents); Err = setupDevicePools(HSAAgents);
if (Err != HSA_STATUS_SUCCESS) { if (Err != HSA_STATUS_SUCCESS) {
@ -1366,27 +1361,6 @@ static uint64_t acquireAvailablePacketId(hsa_queue_t *Queue) {
return PacketId; return PacketId;
} }
const uint16_t getCodeObjectVersionFromELF(__tgt_device_image *Image) {
char *ImageBegin = (char *)Image->ImageStart;
size_t ImageSize = (char *)Image->ImageEnd - ImageBegin;
StringRef Buffer = StringRef(ImageBegin, ImageSize);
auto ElfOrErr = ObjectFile::createELFObjectFile(MemoryBufferRef(Buffer, ""),
/*InitContent=*/false);
if (!ElfOrErr) {
REPORT("Failed to load ELF: %s\n", toString(ElfOrErr.takeError()).c_str());
return 1;
}
if (const auto *ELFObj = dyn_cast<ELF64LEObjectFile>(ElfOrErr->get())) {
auto Header = ELFObj->getELFFile().getHeader();
uint16_t Version = (uint8_t)(Header.e_ident[EI_ABIVERSION]);
DP("ELFABIVERSION Version: %u\n", Version);
return Version;
}
return 0;
}
int32_t runRegionLocked(int32_t DeviceId, void *TgtEntryPtr, void **TgtArgs, int32_t runRegionLocked(int32_t DeviceId, void *TgtEntryPtr, void **TgtArgs,
ptrdiff_t *TgtOffsets, int32_t ArgNum, int32_t NumTeams, ptrdiff_t *TgtOffsets, int32_t ArgNum, int32_t NumTeams,
int32_t ThreadLimit, uint64_t LoopTripcount) { int32_t ThreadLimit, uint64_t LoopTripcount) {
@ -1464,7 +1438,6 @@ int32_t runRegionLocked(int32_t DeviceId, void *TgtEntryPtr, void **TgtArgs,
} }
uint64_t PacketId = acquireAvailablePacketId(Queue); uint64_t PacketId = acquireAvailablePacketId(Queue);
uint16_t CodeObjectVersion = DeviceInfo().CodeObjectVersion;
const uint32_t Mask = Queue->size - 1; // size is a power of 2 const uint32_t Mask = Queue->size - 1; // size is a power of 2
hsa_kernel_dispatch_packet_t *Packet = hsa_kernel_dispatch_packet_t *Packet =
(hsa_kernel_dispatch_packet_t *)Queue->base_address + (PacketId & Mask); (hsa_kernel_dispatch_packet_t *)Queue->base_address + (PacketId & Mask);
@ -2187,40 +2160,6 @@ __tgt_target_table *__tgt_rtl_load_binary(int32_t DeviceId,
return Res; return Res;
} }
static void preAllocateHeapMemoryForCov5() {
void *DevPtr;
for (int I = 0; I < DeviceInfo().NumberOfDevices; I++) {
DevPtr = nullptr;
size_t PreAllocSize = 131072; // 128KB per device
hsa_amd_memory_pool_t MemoryPool =
DeviceInfo().DeviceCoarseGrainedMemoryPools[I];
hsa_status_t Err =
hsa_amd_memory_pool_allocate(MemoryPool, PreAllocSize, 0, &DevPtr);
if (Err != HSA_STATUS_SUCCESS) {
DP("Error allocating preallocated heap device memory: %s\n",
get_error_string(Err));
}
Err = hsa_amd_agents_allow_access(1, &DeviceInfo().HSAAgents[I], NULL,
DevPtr);
if (Err != HSA_STATUS_SUCCESS) {
DP("hsa allow_access_to_all_gpu_agents failed: %s\n",
get_error_string(Err));
}
uint64_t Rounded =
sizeof(uint32_t) * ((PreAllocSize + 3) / sizeof(uint32_t));
Err = hsa_amd_memory_fill(DevPtr, 0, Rounded / sizeof(uint32_t));
if (Err != HSA_STATUS_SUCCESS) {
DP("Error zero-initializing preallocated heap device memory:%s\n",
get_error_string(Err));
}
DeviceInfo().PreallocatedDeviceHeap[I] = DevPtr;
}
}
__tgt_target_table *__tgt_rtl_load_binary_locked(int32_t DeviceId, __tgt_target_table *__tgt_rtl_load_binary_locked(int32_t DeviceId,
__tgt_device_image *Image) { __tgt_device_image *Image) {
// This function loads the device image onto gpu[DeviceId] and does other // This function loads the device image onto gpu[DeviceId] and does other
@ -2255,12 +2194,6 @@ __tgt_target_table *__tgt_rtl_load_binary_locked(int32_t DeviceId,
if (!elfMachineIdIsAmdgcn(Image)) if (!elfMachineIdIsAmdgcn(Image))
return NULL; return NULL;
DeviceInfo().CodeObjectVersion = getCodeObjectVersionFromELF(Image);
if (DeviceInfo().CodeObjectVersion >=
llvm::ELF::ELFABIVERSION_AMDGPU_HSA_V5) {
preAllocateHeapMemoryForCov5();
}
{ {
auto Env = auto Env =
DeviceEnvironment(DeviceId, DeviceInfo().NumberOfDevices, DeviceEnvironment(DeviceId, DeviceInfo().NumberOfDevices,
@ -2584,8 +2517,7 @@ __tgt_target_table *__tgt_rtl_load_binary_locked(int32_t DeviceId,
KernelsList.push_back(KernelTy(ExecModeVal, WGSizeVal, DeviceId, KernelsList.push_back(KernelTy(ExecModeVal, WGSizeVal, DeviceId,
CallStackAddr, E->name, KernargSegmentSize, CallStackAddr, E->name, KernargSegmentSize,
DeviceInfo().KernArgPool, DeviceInfo().KernArgPool));
DeviceInfo().CodeObjectVersion));
__tgt_offload_entry Entry = *E; __tgt_offload_entry Entry = *E;
Entry.addr = (void *)&KernelsList.back(); Entry.addr = (void *)&KernelsList.back();
DeviceInfo().addOffloadEntry(DeviceId, Entry); DeviceInfo().addOffloadEntry(DeviceId, Entry);

2
openmp/runtime/cmake/LibompHandleFlags.cmake
View File

@ -100,7 +100,7 @@ function(libomp_get_ldflags ldflags)
libomp_append(ldflags_local "${CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG}${LIBOMP_VERSION_MAJOR}.${LIBOMP_VERSION_MINOR}" libomp_append(ldflags_local "${CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG}${LIBOMP_VERSION_MAJOR}.${LIBOMP_VERSION_MINOR}"
IF_DEFINED CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG) IF_DEFINED CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG)
libomp_append(ldflags_local -Wl,--as-needed LIBOMP_HAVE_AS_NEEDED_FLAG) libomp_append(ldflags_local -Wl,--as-needed LIBOMP_HAVE_AS_NEEDED_FLAG)
libomp_append(ldflags_local "-Wl,--version-script=${LIBOMP_SRC_DIR}/exports_so.txt -Wl,--undefined-version" LIBOMP_HAVE_VERSION_SCRIPT_FLAG) libomp_append(ldflags_local "-Wl,--version-script=${LIBOMP_SRC_DIR}/exports_so.txt" LIBOMP_HAVE_VERSION_SCRIPT_FLAG)
libomp_append(ldflags_local "-Wl,--undefined-version" LIBOMP_HAVE_UNDEFINED_VERSION_FLAG) # FIXME issue #58858 libomp_append(ldflags_local "-Wl,--undefined-version" LIBOMP_HAVE_UNDEFINED_VERSION_FLAG) # FIXME issue #58858
libomp_append(ldflags_local -static-libgcc LIBOMP_HAVE_STATIC_LIBGCC_FLAG) libomp_append(ldflags_local -static-libgcc LIBOMP_HAVE_STATIC_LIBGCC_FLAG)
libomp_append(ldflags_local -Wl,-z,noexecstack LIBOMP_HAVE_Z_NOEXECSTACK_FLAG) libomp_append(ldflags_local -Wl,-z,noexecstack LIBOMP_HAVE_Z_NOEXECSTACK_FLAG)

2
openmp/runtime/cmake/config-ix.cmake
View File

@ -131,7 +131,7 @@ if(WIN32)
elseif(NOT APPLE) elseif(NOT APPLE)
libomp_check_linker_flag(-Wl,-x LIBOMP_HAVE_X_FLAG) libomp_check_linker_flag(-Wl,-x LIBOMP_HAVE_X_FLAG)
libomp_check_linker_flag(-Wl,--as-needed LIBOMP_HAVE_AS_NEEDED_FLAG) libomp_check_linker_flag(-Wl,--as-needed LIBOMP_HAVE_AS_NEEDED_FLAG)
libomp_check_linker_flag("-Wl,--version-script=${LIBOMP_SRC_DIR}/exports_so.txt -Wl,--undefined-version" LIBOMP_HAVE_VERSION_SCRIPT_FLAG) libomp_check_linker_flag("-Wl,--version-script=${LIBOMP_SRC_DIR}/exports_so.txt" LIBOMP_HAVE_VERSION_SCRIPT_FLAG)
libomp_check_linker_flag("-Wl,--undefined-version" LIBOMP_HAVE_UNDEFINED_VERSION_FLAG) # FIXME issue #58858 libomp_check_linker_flag("-Wl,--undefined-version" LIBOMP_HAVE_UNDEFINED_VERSION_FLAG) # FIXME issue #58858
libomp_check_linker_flag(-static-libgcc LIBOMP_HAVE_STATIC_LIBGCC_FLAG) libomp_check_linker_flag(-static-libgcc LIBOMP_HAVE_STATIC_LIBGCC_FLAG)
libomp_check_linker_flag(-Wl,-z,noexecstack LIBOMP_HAVE_Z_NOEXECSTACK_FLAG) libomp_check_linker_flag(-Wl,-z,noexecstack LIBOMP_HAVE_Z_NOEXECSTACK_FLAG)