detect `aarch64_32` with compiler defined macro `__ARM64_ARCH_8_32__` reuse ARM `__kmp_unnamed_critical_addr` and add `KMP_PREFIX_UNDERSCORE` macro like AARCH64 reuse AARCH64 `__kmp_invoke_microtask` build log for watchos armv7k + arm64_32 and watchos simulator x86_64 + arm64 https://github.com/nihui/action-protobuf/actions/runs/8520684611/job/23337305030
The direct lock data structure has bit `0` (the least significant bit) of the first 32-bit word set to `1` to indicate it is a direct lock. On the other hand, the first word (in 32-bit mode) or first two words (in 64-bit mode) of an indirect lock are the address of the entry allocated from the indirect lock table. The runtime checks bit `0` of the first 32-bit word to tell if this is a direct or an indirect lock. This works fine for 32-bit and 64-bit little-endian because its memory layout of a 64-bit address is (`low word`, `high word`). However, this causes problems for big-endian where the memory layout of a 64-bit address is (`high word`, `low word`). If an address of the indirect lock table entry is something like `0x110035300`, i.e., (`0x1`, `0x10035300`), it is treated as a direct lock. This patch defines `struct kmp_base_tas_lock` with the ordering of the two 32-bit members flipped for big-endian PPC64 so that when checking/setting tags in member `poll`, the second word (the low word) is used. This patch also changes places where `poll` is not already explicitly specified for checking/setting tags.
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
Use of VLA can cause compile warning that was introduced in D156565. This patch implements a simple stack/heap-based VLA that can miminc the behavior of an actual VLA and prevent the warning. By default the stack accomodates the elements. If the number of emelements is greater than N, which by default is 8, a heap buffer will be allocated and used to acccomodate the elements.
This change allows building the static OpenMP runtime, `libomp.a`, as WebAssembly. It builds on the work done in [D142593] but goes further in several ways: - it makes the OpenMP CMake files more WebAssembly-aware - it conditions much more code (or code that had been refactored since [D142593]) for `KMP_ARCH_WASM` and `KMP_OS_WASI` - it fixes a Clang crash due to unimplemented common symbols in WebAssembly The commit messages have more details. Please understand this PR as a start, not the completed work, for WebAssembly support in OpenMP. Getting the tests running somehow would be a good next step, e.g.; but what is contained here works, at least with recent versions of [wasi-sdk] and engines that support [wasi-threads]. I suspect the same is true for Emscripten and browsers, but I have not tested that workflow. [D142593]: https://reviews.llvm.org/D142593 [wasi-sdk]: https://github.com/WebAssembly/wasi-sdk [wasi-threads]: https://github.com/WebAssembly/wasi-threads --------- Co-authored-by: Atanas Atanasov <atanas.atanasov@intel.com>
This reverts commit 97e16da450e94c92456fa5a74768ec1b22fe6b63 because it causes build error on i386 system.
Use of VLA can cause compile warning that was introduced in D156565. This patch implements a simple stack/heap-based VLA that can miminc the behavior of an actual VLA and prevent the warning. By default the stack accomodates the elements. If the number of emelements is greater than N, which by default is 8, a heap buffer will be allocated and used to acccomodate the elements.
This reverts commit d46f63553ab9ee041884b5306527afefaf00e144.
Use of VLA can cause compile warning that was introduced in D156565. This patch implements a simple stack/heap-based VLA that can miminc the behavior of an actual VLA and prevent the warning. By default the stack accomodates the elements. If the number of emelements is greater than N, which by default is 8, a heap buffer will be allocated and used to acccomodate the elements.