[Openmp-commits] [openmp] 2edce42 - [openmp][AIX]Initial changes for porting to AIX (#76841)
via Openmp-commits
openmp-commits at lists.llvm.org
Mon Jan 8 05:33:04 PST 2024
Author: Xing Xue
Date: 2024-01-08T08:33:00-05:00
New Revision: 2edce427a8b17d1d2192c1ee4a2227b6eb2971a0
URL: https://github.com/llvm/llvm-project/commit/2edce427a8b17d1d2192c1ee4a2227b6eb2971a0
DIFF: https://github.com/llvm/llvm-project/commit/2edce427a8b17d1d2192c1ee4a2227b6eb2971a0.diff
LOG: [openmp][AIX]Initial changes for porting to AIX (#76841)
This PR contains initial changes for building and testing libomp on AIX.
More changes will follow.
- `KMP_OS_AIX` is defined for the AIX platform
- `KMP_ARCH_PPC` is defined for 32-bit PPC
- `KMP_ARCH_PPC_XCOFF` and `KMP_ARCH_PPC64_XCOFF` are for 32- and 64-bit
XCOFF object formats respectively
- Assembly file `z_AIX_asm.S` is used for AIX specific assembly code and
will be added in a separate PR
- The target library is disabled because AIX does not have the device
support
- OMPT is temporarily disabled
Added:
Modified:
openmp/CMakeLists.txt
openmp/cmake/OpenMPTesting.cmake
openmp/runtime/CMakeLists.txt
openmp/runtime/cmake/LibompGetArchitecture.cmake
openmp/runtime/cmake/config-ix.cmake
openmp/runtime/src/CMakeLists.txt
openmp/runtime/src/kmp.h
openmp/runtime/src/kmp_config.h.cmake
openmp/runtime/src/kmp_ftn_entry.h
openmp/runtime/src/kmp_global.cpp
openmp/runtime/src/kmp_gsupport.cpp
openmp/runtime/src/kmp_os.h
openmp/runtime/src/kmp_platform.h
openmp/runtime/src/kmp_runtime.cpp
openmp/runtime/src/kmp_settings.cpp
openmp/runtime/src/kmp_wrapper_getpid.h
openmp/runtime/src/z_Linux_util.cpp
openmp/runtime/test/lit.cfg
Removed:
################################################################################
diff --git a/openmp/CMakeLists.txt b/openmp/CMakeLists.txt
index 307c8dbbc0c3b9..c1c79f8e0ca93c 100644
--- a/openmp/CMakeLists.txt
+++ b/openmp/CMakeLists.txt
@@ -94,7 +94,8 @@ set(ENABLE_LIBOMPTARGET ON)
# Since the device plugins are only supported on Linux anyway,
# there is no point in trying to compile libomptarget on other OSes.
# 32-bit systems are not supported either.
-if (APPLE OR WIN32 OR WASM OR NOT "cxx_std_17" IN_LIST CMAKE_CXX_COMPILE_FEATURES OR NOT CMAKE_SIZEOF_VOID_P EQUAL 8)
+if (APPLE OR WIN32 OR WASM OR NOT "cxx_std_17" IN_LIST CMAKE_CXX_COMPILE_FEATURES
+ OR NOT CMAKE_SIZEOF_VOID_P EQUAL 8 OR ${CMAKE_SYSTEM_NAME} MATCHES "AIX")
set(ENABLE_LIBOMPTARGET OFF)
endif()
diff --git a/openmp/cmake/OpenMPTesting.cmake b/openmp/cmake/OpenMPTesting.cmake
index a771efdf9e69a9..df41956dadd4f4 100644
--- a/openmp/cmake/OpenMPTesting.cmake
+++ b/openmp/cmake/OpenMPTesting.cmake
@@ -55,6 +55,9 @@ if (${OPENMP_STANDALONE_BUILD})
if (MSVC OR XCODE)
set(DEFAULT_LIT_ARGS "${DEFAULT_LIT_ARGS} --no-progress-bar")
endif()
+ if (${CMAKE_SYSTEM_NAME} MATCHES "AIX")
+ set(DEFAULT_LIT_ARGS "${DEFAULT_LIT_ARGS} --time-tests --timeout=1800")
+ endif()
set(OPENMP_LIT_ARGS "${DEFAULT_LIT_ARGS}" CACHE STRING "Options for lit.")
separate_arguments(OPENMP_LIT_ARGS)
else()
diff --git a/openmp/runtime/CMakeLists.txt b/openmp/runtime/CMakeLists.txt
index 80064170db193d..041b60efac5cee 100644
--- a/openmp/runtime/CMakeLists.txt
+++ b/openmp/runtime/CMakeLists.txt
@@ -30,7 +30,7 @@ if(${OPENMP_STANDALONE_BUILD})
# If adding a new architecture, take a look at cmake/LibompGetArchitecture.cmake
libomp_get_architecture(LIBOMP_DETECTED_ARCH)
set(LIBOMP_ARCH ${LIBOMP_DETECTED_ARCH} CACHE STRING
- "The architecture to build for (x86_64/i386/arm/ppc64/ppc64le/aarch64/mic/mips/mips64/riscv64/loongarch64/ve/s390x/wasm32).")
+ "The architecture to build for (x86_64/i386/arm/ppc/ppc64/ppc64le/aarch64/mic/mips/mips64/riscv64/loongarch64/ve/s390x/wasm32).")
# Should assertions be enabled? They are on by default.
set(LIBOMP_ENABLE_ASSERTIONS TRUE CACHE BOOL
"enable assertions?")
@@ -51,8 +51,10 @@ else() # Part of LLVM build
set(LIBOMP_ARCH x86_64)
elseif(LIBOMP_NATIVE_ARCH MATCHES "powerpc64le")
set(LIBOMP_ARCH ppc64le)
- elseif(LIBOMP_NATIVE_ARCH MATCHES "powerpc")
+ elseif(LIBOMP_NATIVE_ARCH MATCHES "powerpc64")
set(LIBOMP_ARCH ppc64)
+ elseif(LIBOMP_NATIVE_ARCH MATCHES "powerpc")
+ set(LIBOMP_ARCH ppc)
elseif(LIBOMP_NATIVE_ARCH MATCHES "aarch64")
set(LIBOMP_ARCH aarch64)
elseif(LIBOMP_NATIVE_ARCH MATCHES "arm64")
@@ -89,7 +91,7 @@ if(LIBOMP_ARCH STREQUAL "aarch64")
endif()
endif()
-libomp_check_variable(LIBOMP_ARCH 32e x86_64 32 i386 arm ppc64 ppc64le aarch64 aarch64_a64fx mic mips mips64 riscv64 loongarch64 ve s390x wasm32)
+libomp_check_variable(LIBOMP_ARCH 32e x86_64 32 i386 arm ppc ppc64 ppc64le aarch64 aarch64_a64fx mic mips mips64 riscv64 loongarch64 ve s390x wasm32)
set(LIBOMP_LIB_TYPE normal CACHE STRING
"Performance,Profiling,Stubs library (normal/profile/stubs)")
@@ -128,8 +130,14 @@ set(LIBOMP_ASMFLAGS "" CACHE STRING
"Appended user specified assembler flags.")
set(LIBOMP_LDFLAGS "" CACHE STRING
"Appended user specified linker flags.")
-set(LIBOMP_LIBFLAGS "" CACHE STRING
- "Appended user specified linked libs flags. (e.g., -lm)")
+if("${LIBOMP_ARCH}" STREQUAL "ppc" AND ${CMAKE_SYSTEM_NAME} MATCHES "AIX")
+ # PPC (32-bit) on AIX needs libatomic for __atomic_load_8, etc.
+ set(LIBOMP_LIBFLAGS "-latomic" CACHE STRING
+ "Appended user specified linked libs flags. (e.g., -lm)")
+else()
+ set(LIBOMP_LIBFLAGS "" CACHE STRING
+ "Appended user specified linked libs flags. (e.g., -lm)")
+endif()
set(LIBOMP_FFLAGS "" CACHE STRING
"Appended user specified Fortran compiler flags. These are only used if LIBOMP_FORTRAN_MODULES==TRUE.")
@@ -171,12 +179,15 @@ set(LOONGARCH64 FALSE)
set(VE FALSE)
set(S390X FALSE)
set(WASM FALSE)
+set(PPC FALSE)
if("${LIBOMP_ARCH}" STREQUAL "i386" OR "${LIBOMP_ARCH}" STREQUAL "32") # IA-32 architecture
set(IA32 TRUE)
elseif("${LIBOMP_ARCH}" STREQUAL "x86_64" OR "${LIBOMP_ARCH}" STREQUAL "32e") # Intel(R) 64 architecture
set(INTEL64 TRUE)
elseif("${LIBOMP_ARCH}" STREQUAL "arm") # ARM architecture
set(ARM TRUE)
+elseif("${LIBOMP_ARCH}" STREQUAL "ppc") # PPC32 architecture
+ set(PPC TRUE)
elseif("${LIBOMP_ARCH}" STREQUAL "ppc64") # PPC64BE architecture
set(PPC64BE TRUE)
set(PPC64 TRUE)
diff --git a/openmp/runtime/cmake/LibompGetArchitecture.cmake b/openmp/runtime/cmake/LibompGetArchitecture.cmake
index cd85267020bd64..d7f81870f9ef4b 100644
--- a/openmp/runtime/cmake/LibompGetArchitecture.cmake
+++ b/openmp/runtime/cmake/LibompGetArchitecture.cmake
@@ -41,6 +41,8 @@ function(libomp_get_architecture return_arch)
#error ARCHITECTURE=ppc64le
#elif defined(__powerpc64__)
#error ARCHITECTURE=ppc64
+ #elif defined(__powerpc__) && !defined(__powerpc64__)
+ #error ARCHITECTURE=ppc
#elif defined(__mips__) && defined(__mips64)
#error ARCHITECTURE=mips64
#elif defined(__mips__) && !defined(__mips64)
diff --git a/openmp/runtime/cmake/config-ix.cmake b/openmp/runtime/cmake/config-ix.cmake
index 90b9af4cd3829b..76f471a443806e 100644
--- a/openmp/runtime/cmake/config-ix.cmake
+++ b/openmp/runtime/cmake/config-ix.cmake
@@ -333,7 +333,8 @@ else()
(LIBOMP_ARCH STREQUAL loongarch64) OR
(LIBOMP_ARCH STREQUAL s390x))
AND # OS supported?
- ((WIN32 AND LIBOMP_HAVE_PSAPI) OR APPLE OR (NOT WIN32 AND LIBOMP_HAVE_WEAK_ATTRIBUTE)))
+ ((WIN32 AND LIBOMP_HAVE_PSAPI) OR APPLE OR
+ (NOT (WIN32 OR ${CMAKE_SYSTEM_NAME} MATCHES "AIX") AND LIBOMP_HAVE_WEAK_ATTRIBUTE)))
set(LIBOMP_HAVE_OMPT_SUPPORT TRUE)
else()
set(LIBOMP_HAVE_OMPT_SUPPORT FALSE)
diff --git a/openmp/runtime/src/CMakeLists.txt b/openmp/runtime/src/CMakeLists.txt
index 8b2445ac58bf0c..619d4f7ba45822 100644
--- a/openmp/runtime/src/CMakeLists.txt
+++ b/openmp/runtime/src/CMakeLists.txt
@@ -108,7 +108,11 @@ else()
# Unix specific files
libomp_append(LIBOMP_CXXFILES z_Linux_util.cpp)
libomp_append(LIBOMP_CXXFILES kmp_gsupport.cpp)
- libomp_append(LIBOMP_GNUASMFILES z_Linux_asm.S) # Unix assembly file
+ if(${CMAKE_SYSTEM_NAME} MATCHES "AIX")
+ libomp_append(LIBOMP_GNUASMFILES z_AIX_asm.S) # AIX assembly file
+ else()
+ libomp_append(LIBOMP_GNUASMFILES z_Linux_asm.S) # Unix assembly file
+ endif()
endif()
libomp_append(LIBOMP_CXXFILES thirdparty/ittnotify/ittnotify_static.cpp LIBOMP_USE_ITT_NOTIFY)
libomp_append(LIBOMP_CXXFILES kmp_debugger.cpp LIBOMP_USE_DEBUGGER)
diff --git a/openmp/runtime/src/kmp.h b/openmp/runtime/src/kmp.h
index 3dbf8c71c48d38..c287a31e0b1b54 100644
--- a/openmp/runtime/src/kmp.h
+++ b/openmp/runtime/src/kmp.h
@@ -1192,6 +1192,9 @@ extern void __kmp_init_target_task();
// Minimum stack size for pthread for VE is 4MB.
// https://www.hpc.nec/documents/veos/en/glibc/Difference_Points_glibc.htm
#define KMP_DEFAULT_STKSIZE ((size_t)(4 * 1024 * 1024))
+#elif KMP_OS_AIX
+// The default stack size for worker threads on AIX is 4MB.
+#define KMP_DEFAULT_STKSIZE ((size_t)(4 * 1024 * 1024))
#else
#define KMP_DEFAULT_STKSIZE ((size_t)(1024 * 1024))
#endif
@@ -1354,6 +1357,10 @@ extern kmp_uint64 __kmp_now_nsec();
/* TODO: tune for KMP_OS_WASI */
#define KMP_INIT_WAIT 1024U /* initial number of spin-tests */
#define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */
+#elif KMP_OS_AIX
+/* TODO: tune for KMP_OS_AIX */
+#define KMP_INIT_WAIT 1024U /* initial number of spin-tests */
+#define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */
#endif
#if KMP_ARCH_X86 || KMP_ARCH_X86_64
diff --git a/openmp/runtime/src/kmp_config.h.cmake b/openmp/runtime/src/kmp_config.h.cmake
index 5f04301c91c60c..b0cd0ed296e7f6 100644
--- a/openmp/runtime/src/kmp_config.h.cmake
+++ b/openmp/runtime/src/kmp_config.h.cmake
@@ -100,7 +100,7 @@
#define ENABLE_LIBOMPTARGET OPENMP_ENABLE_LIBOMPTARGET
// Configured cache line based on architecture
-#if KMP_ARCH_PPC64
+#if KMP_ARCH_PPC64 || KMP_ARCH_PPC
# define CACHE_LINE 128
#elif KMP_ARCH_AARCH64_A64FX
# define CACHE_LINE 256
diff --git a/openmp/runtime/src/kmp_ftn_entry.h b/openmp/runtime/src/kmp_ftn_entry.h
index d54c5bfd10fe96..713561734c481a 100644
--- a/openmp/runtime/src/kmp_ftn_entry.h
+++ b/openmp/runtime/src/kmp_ftn_entry.h
@@ -582,7 +582,7 @@ int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_THREAD_NUM)(void) {
int gtid;
#if KMP_OS_DARWIN || KMP_OS_DRAGONFLY || KMP_OS_FREEBSD || KMP_OS_NETBSD || \
- KMP_OS_OPENBSD || KMP_OS_HURD || KMP_OS_SOLARIS
+ KMP_OS_OPENBSD || KMP_OS_HURD || KMP_OS_SOLARIS || KMP_OS_AIX
gtid = __kmp_entry_gtid();
#elif KMP_OS_WINDOWS
if (!__kmp_init_parallel ||
diff --git a/openmp/runtime/src/kmp_global.cpp b/openmp/runtime/src/kmp_global.cpp
index b132f38fd3b084..5017cd3de4be57 100644
--- a/openmp/runtime/src/kmp_global.cpp
+++ b/openmp/runtime/src/kmp_global.cpp
@@ -172,7 +172,7 @@ int __kmp_ncores = 0;
int __kmp_chunk = 0;
int __kmp_force_monotonic = 0;
int __kmp_abort_delay = 0;
-#if KMP_OS_LINUX && defined(KMP_TDATA_GTID)
+#if (KMP_OS_LINUX || KMP_OS_AIX) && defined(KMP_TDATA_GTID)
int __kmp_gtid_mode = 3; /* use __declspec(thread) TLS to store gtid */
int __kmp_adjust_gtid_mode = FALSE;
#elif KMP_OS_WINDOWS
diff --git a/openmp/runtime/src/kmp_gsupport.cpp b/openmp/runtime/src/kmp_gsupport.cpp
index 78af395335498b..88189659a23416 100644
--- a/openmp/runtime/src/kmp_gsupport.cpp
+++ b/openmp/runtime/src/kmp_gsupport.cpp
@@ -357,7 +357,8 @@ void KMP_EXPAND_NAME(KMP_API_NAME_GOMP_ORDERED_END)(void) {
// They come in two flavors: 64-bit unsigned, and either 32-bit signed
// (IA-32 architecture) or 64-bit signed (Intel(R) 64).
-#if KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_MIPS || KMP_ARCH_WASM
+#if KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_MIPS || KMP_ARCH_WASM || \
+ KMP_ARCH_PPC
#define KMP_DISPATCH_INIT __kmp_aux_dispatch_init_4
#define KMP_DISPATCH_FINI_CHUNK __kmp_aux_dispatch_fini_chunk_4
#define KMP_DISPATCH_NEXT __kmpc_dispatch_next_4
diff --git a/openmp/runtime/src/kmp_os.h b/openmp/runtime/src/kmp_os.h
index 4ffe9f2d8c953b..6862fd89b6302e 100644
--- a/openmp/runtime/src/kmp_os.h
+++ b/openmp/runtime/src/kmp_os.h
@@ -176,7 +176,8 @@ typedef unsigned long long kmp_uint64;
#define KMP_UINT64_SPEC "llu"
#endif /* KMP_OS_UNIX */
-#if KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_MIPS || KMP_ARCH_WASM
+#if KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_MIPS || KMP_ARCH_WASM || \
+ KMP_ARCH_PPC
#define KMP_SIZE_T_SPEC KMP_UINT32_SPEC
#elif KMP_ARCH_X86_64 || KMP_ARCH_PPC64 || KMP_ARCH_AARCH64 || \
KMP_ARCH_MIPS64 || KMP_ARCH_RISCV64 || KMP_ARCH_LOONGARCH64 || \
@@ -186,7 +187,7 @@ typedef unsigned long long kmp_uint64;
#error "Can't determine size_t printf format specifier."
#endif
-#if KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_WASM
+#if KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_WASM || KMP_ARCH_PPC
#define KMP_SIZE_T_MAX (0xFFFFFFFF)
#else
#define KMP_SIZE_T_MAX (0xFFFFFFFFFFFFFFFF)
@@ -1046,7 +1047,7 @@ extern kmp_real64 __kmp_xchg_real64(volatile kmp_real64 *p, kmp_real64 v);
#if KMP_ARCH_PPC64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64 || KMP_ARCH_MIPS || \
KMP_ARCH_MIPS64 || KMP_ARCH_RISCV64 || KMP_ARCH_LOONGARCH64 || \
- KMP_ARCH_VE || KMP_ARCH_S390X
+ KMP_ARCH_VE || KMP_ARCH_S390X || KMP_ARCH_PPC
#if KMP_OS_WINDOWS
#undef KMP_MB
#define KMP_MB() std::atomic_thread_fence(std::memory_order_seq_cst)
@@ -1146,7 +1147,7 @@ extern kmp_real64 __kmp_xchg_real64(volatile kmp_real64 *p, kmp_real64 v);
KMP_COMPARE_AND_STORE_REL64((volatile kmp_int64 *)(volatile void *)&(a), \
(kmp_int64)(b), (kmp_int64)(c))
-#if KMP_ARCH_X86 || KMP_ARCH_MIPS || KMP_ARCH_WASM
+#if KMP_ARCH_X86 || KMP_ARCH_MIPS || KMP_ARCH_WASM || KMP_ARCH_PPC
// What about ARM?
#define TCR_PTR(a) ((void *)TCR_4(a))
#define TCW_PTR(a, b) TCW_4((a), (b))
diff --git a/openmp/runtime/src/kmp_platform.h b/openmp/runtime/src/kmp_platform.h
index 45f411b9c21949..c06f46db2d4965 100644
--- a/openmp/runtime/src/kmp_platform.h
+++ b/openmp/runtime/src/kmp_platform.h
@@ -82,15 +82,20 @@
#define KMP_OS_WASI 1
#endif
+#if (defined _AIX)
+#undef KMP_OS_AIX
+#define KMP_OS_AIX 1
+#endif
+
#if (1 != KMP_OS_LINUX + KMP_OS_DRAGONFLY + KMP_OS_FREEBSD + KMP_OS_NETBSD + \
KMP_OS_OPENBSD + KMP_OS_DARWIN + KMP_OS_WINDOWS + KMP_OS_HURD + \
- KMP_OS_SOLARIS + KMP_OS_WASI)
+ KMP_OS_SOLARIS + KMP_OS_WASI + KMP_OS_AIX)
#error Unknown OS
#endif
#if KMP_OS_LINUX || KMP_OS_DRAGONFLY || KMP_OS_FREEBSD || KMP_OS_NETBSD || \
KMP_OS_OPENBSD || KMP_OS_DARWIN || KMP_OS_HURD || KMP_OS_SOLARIS || \
- KMP_OS_WASI
+ KMP_OS_WASI || KMP_OS_AIX
#undef KMP_OS_UNIX
#define KMP_OS_UNIX 1
#endif
@@ -102,7 +107,8 @@
#define KMP_ARCH_AARCH64 0
#define KMP_ARCH_PPC64_ELFv1 0
#define KMP_ARCH_PPC64_ELFv2 0
-#define KMP_ARCH_PPC64 (KMP_ARCH_PPC64_ELFv2 || KMP_ARCH_PPC64_ELFv1)
+#define KMP_ARCH_PPC64_XCOFF 0
+#define KMP_ARCH_PPC_XCOFF 0
#define KMP_ARCH_MIPS 0
#define KMP_ARCH_MIPS64 0
#define KMP_ARCH_RISCV64 0
@@ -134,13 +140,23 @@
#undef KMP_ARCH_X86
#define KMP_ARCH_X86 1
#elif defined __powerpc64__
-#if defined(_CALL_ELF) && _CALL_ELF == 2
+#if defined(_CALL_ELF)
+#if _CALL_ELF == 2
#undef KMP_ARCH_PPC64_ELFv2
#define KMP_ARCH_PPC64_ELFv2 1
#else
#undef KMP_ARCH_PPC64_ELFv1
#define KMP_ARCH_PPC64_ELFv1 1
#endif
+#elif defined KMP_OS_AIX
+#undef KMP_ARCH_PPC64_XCOFF
+#define KMP_ARCH_PPC64_XCOFF 1
+#endif
+#elif defined(__powerpc__) && defined(KMP_OS_AIX)
+#undef KMP_ARCH_PPC_XCOFF
+#define KMP_ARCH_PPC_XCOFF 1
+#undef KMP_ARCH_PPC
+#define KMP_ARCH_PPC 1
#elif defined __aarch64__
#undef KMP_ARCH_AARCH64
#define KMP_ARCH_AARCH64 1
@@ -207,6 +223,9 @@
#define KMP_ARCH_WASM 1
#endif
+#define KMP_ARCH_PPC64 \
+ (KMP_ARCH_PPC64_ELFv2 || KMP_ARCH_PPC64_ELFv1 || KMP_ARCH_PPC64_XCOFF)
+
#if defined(__MIC__) || defined(__MIC2__)
#define KMP_MIC 1
#if __MIC2__ || __KNC__
@@ -224,7 +243,8 @@
/* Specify 32 bit architectures here */
#define KMP_32_BIT_ARCH \
- (KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_MIPS || KMP_ARCH_WASM)
+ (KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_MIPS || KMP_ARCH_WASM || \
+ KMP_ARCH_PPC)
// Platforms which support Intel(R) Many Integrated Core Architecture
#define KMP_MIC_SUPPORTED \
@@ -234,7 +254,7 @@
#if (1 != KMP_ARCH_X86 + KMP_ARCH_X86_64 + KMP_ARCH_ARM + KMP_ARCH_PPC64 + \
KMP_ARCH_AARCH64 + KMP_ARCH_MIPS + KMP_ARCH_MIPS64 + \
KMP_ARCH_RISCV64 + KMP_ARCH_LOONGARCH64 + KMP_ARCH_VE + \
- KMP_ARCH_S390X + KMP_ARCH_WASM)
+ KMP_ARCH_S390X + KMP_ARCH_WASM + KMP_ARCH_PPC)
#error Unknown or unsupported architecture
#endif
diff --git a/openmp/runtime/src/kmp_runtime.cpp b/openmp/runtime/src/kmp_runtime.cpp
index 4e1074a893a281..fc5e8405a415ed 100644
--- a/openmp/runtime/src/kmp_runtime.cpp
+++ b/openmp/runtime/src/kmp_runtime.cpp
@@ -8901,7 +8901,7 @@ __kmp_determine_reduction_method(
#if KMP_OS_LINUX || KMP_OS_DRAGONFLY || KMP_OS_FREEBSD || KMP_OS_NETBSD || \
KMP_OS_OPENBSD || KMP_OS_WINDOWS || KMP_OS_DARWIN || KMP_OS_HURD || \
- KMP_OS_SOLARIS || KMP_OS_WASI
+ KMP_OS_SOLARIS || KMP_OS_WASI || KMP_OS_AIX
int teamsize_cutoff = 4;
@@ -8926,14 +8926,14 @@ __kmp_determine_reduction_method(
#error "Unknown or unsupported OS"
#endif // KMP_OS_LINUX || KMP_OS_DRAGONFLY || KMP_OS_FREEBSD || KMP_OS_NETBSD ||
// KMP_OS_OPENBSD || KMP_OS_WINDOWS || KMP_OS_DARWIN || KMP_OS_HURD ||
- // KMP_OS_SOLARIS || KMP_OS_WASI
+ // KMP_OS_SOLARIS || KMP_OS_WASI || KMP_OS_AIX
#elif KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_AARCH || KMP_ARCH_MIPS || \
- KMP_ARCH_WASM
+ KMP_ARCH_WASM || KMP_ARCH_PPC
#if KMP_OS_LINUX || KMP_OS_DRAGONFLY || KMP_OS_FREEBSD || KMP_OS_NETBSD || \
KMP_OS_OPENBSD || KMP_OS_WINDOWS || KMP_OS_HURD || KMP_OS_SOLARIS || \
- KMP_OS_WASI
+ KMP_OS_WASI || KMP_OS_AIX
// basic tuning
diff --git a/openmp/runtime/src/kmp_settings.cpp b/openmp/runtime/src/kmp_settings.cpp
index e731bf45e8eee1..30a4c05fe76b32 100644
--- a/openmp/runtime/src/kmp_settings.cpp
+++ b/openmp/runtime/src/kmp_settings.cpp
@@ -6171,9 +6171,9 @@ void __kmp_env_initialize(char const *string) {
// specifier, even as substrings.
//
// I can't find a case-insensitive version of strstr on Windows* OS.
- // Use the case-sensitive version for now.
+ // Use the case-sensitive version for now. AIX does the same.
-#if KMP_OS_WINDOWS
+#if KMP_OS_WINDOWS || KMP_OS_AIX
#define FIND strstr
#else
#define FIND strcasestr
diff --git a/openmp/runtime/src/kmp_wrapper_getpid.h b/openmp/runtime/src/kmp_wrapper_getpid.h
index f9d7f4804fbc6e..d31c6e80f75df3 100644
--- a/openmp/runtime/src/kmp_wrapper_getpid.h
+++ b/openmp/runtime/src/kmp_wrapper_getpid.h
@@ -17,7 +17,9 @@
// On Unix-like systems (Linux* OS and OS X*) getpid() is declared in standard
// headers.
+#if !defined(KMP_OS_AIX)
#include <sys/syscall.h>
+#endif
#include <sys/types.h>
#include <unistd.h>
#if KMP_OS_DARWIN
@@ -31,6 +33,9 @@
#define __kmp_gettid() _lwp_self()
#elif KMP_OS_OPENBSD
#define __kmp_gettid() getthrid()
+#elif KMP_OS_AIX
+#include <pthread.h>
+#define __kmp_gettid() pthread_self()
#elif defined(SYS_gettid)
// Hopefully other Unix systems define SYS_gettid syscall for getting os thread
// id
diff --git a/openmp/runtime/src/z_Linux_util.cpp b/openmp/runtime/src/z_Linux_util.cpp
index c2df8895e88753..f01fa647c4d428 100644
--- a/openmp/runtime/src/z_Linux_util.cpp
+++ b/openmp/runtime/src/z_Linux_util.cpp
@@ -29,7 +29,9 @@
#include <semaphore.h>
#endif // KMP_OS_LINUX
#include <sys/resource.h>
+#if !KMP_OS_AIX
#include <sys/syscall.h>
+#endif
#include <sys/time.h>
#include <sys/times.h>
#include <unistd.h>
@@ -1832,7 +1834,7 @@ static int __kmp_get_xproc(void) {
__kmp_type_convert(sysconf(_SC_NPROCESSORS_CONF), &(r));
#elif KMP_OS_DRAGONFLY || KMP_OS_FREEBSD || KMP_OS_NETBSD || KMP_OS_OPENBSD || \
- KMP_OS_HURD || KMP_OS_SOLARIS || KMP_OS_WASI
+ KMP_OS_HURD || KMP_OS_SOLARIS || KMP_OS_WASI || KMP_OS_AIX
__kmp_type_convert(sysconf(_SC_NPROCESSORS_ONLN), &(r));
@@ -2210,9 +2212,9 @@ int __kmp_is_address_mapped(void *addr) {
}
#elif KMP_OS_WASI
found = (int)addr < (__builtin_wasm_memory_size(0) * PAGESIZE);
-#elif KMP_OS_DRAGONFLY || KMP_OS_SOLARIS
+#elif KMP_OS_DRAGONFLY || KMP_OS_SOLARIS || KMP_OS_AIX
- // FIXME(DragonFly, Solaris): Implement this
+ // FIXME(DragonFly, Solaris, AIX): Implement this
found = 1;
#else
@@ -2317,7 +2319,7 @@ int __kmp_get_load_balance(int max) {
// Open "/proc/" directory.
proc_dir = opendir("/proc");
if (proc_dir == NULL) {
- // Cannot open "/prroc/". Probably the kernel does not support it. Return an
+ // Cannot open "/proc/". Probably the kernel does not support it. Return an
// error now and in subsequent calls.
running_threads = -1;
permanent_error = 1;
@@ -2330,9 +2332,14 @@ int __kmp_get_load_balance(int max) {
proc_entry = readdir(proc_dir);
while (proc_entry != NULL) {
+#if KMP_OS_AIX
+ // Proc entry name starts with a digit. Assume it is a process' directory.
+ if (isdigit(proc_entry->d_name[0])) {
+#else
// Proc entry is a directory and name starts with a digit. Assume it is a
// process' directory.
if (proc_entry->d_type == DT_DIR && isdigit(proc_entry->d_name[0])) {
+#endif
#ifdef KMP_DEBUG
++total_processes;
@@ -2376,7 +2383,11 @@ int __kmp_get_load_balance(int max) {
task_entry = readdir(task_dir);
while (task_entry != NULL) {
// It is a directory and name starts with a digit.
+#if KMP_OS_AIX
+ if (isdigit(task_entry->d_name[0])) {
+#else
if (proc_entry->d_type == DT_DIR && isdigit(task_entry->d_name[0])) {
+#endif
// Construct complete stat file path. Easiest way would be:
// __kmp_str_buf_print( & stat_path, "%s/%s/stat", task_path.str,
@@ -2486,7 +2497,7 @@ int __kmp_get_load_balance(int max) {
#if !(KMP_ARCH_X86 || KMP_ARCH_X86_64 || KMP_MIC || \
((KMP_OS_LINUX || KMP_OS_DARWIN) && KMP_ARCH_AARCH64) || \
KMP_ARCH_PPC64 || KMP_ARCH_RISCV64 || KMP_ARCH_LOONGARCH64 || \
- KMP_ARCH_ARM || KMP_ARCH_VE || KMP_ARCH_S390X)
+ KMP_ARCH_ARM || KMP_ARCH_VE || KMP_ARCH_S390X || KMP_ARCH_PPC_XCOFF)
// we really only need the case with 1 argument, because CLANG always build
// a struct of pointers to shared variables referenced in the outlined function
diff --git a/openmp/runtime/test/lit.cfg b/openmp/runtime/test/lit.cfg
index 27ff057c85f60f..4a457f4cc41f75 100644
--- a/openmp/runtime/test/lit.cfg
+++ b/openmp/runtime/test/lit.cfg
@@ -108,6 +108,18 @@ if config.has_ompt:
if config.has_ompx_taskgraph:
config.available_features.add("ompx_taskgraph")
+if config.operating_system == 'AIX':
+ config.available_features.add("aix")
+ object_mode = os.environ.get('OBJECT_MODE', '32')
+ if object_mode == '64':
+ config.test_flags += " -m64"
+ elif object_mode == '32':
+ # Set user data area to 2GB since the default size 256MB in 32-bit mode
+ # is not sufficient to run LIT tests on systems that have a lot of
+ # CPUs when creating one worker thread for each CPU and each worker
+ # thread uses 4MB stack size.
+ config.test_flags += " -Wl,-bmaxdata:0x80000000"
+
if 'Linux' in config.operating_system:
config.available_features.add("linux")
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