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Brian Gesiak 57839425aa [coroutines] Add std::experimental::task<T> type 
Summary:
Adds the coroutine `std::experimental::task<T>` type described in proposal P1056R0.
See https://wg21.link/P1056R0.

This implementation allows customization of the allocator used to allocate the
coroutine frame by passing std::allocator_arg as the first argument, followed by
the allocator to use.

This supports co_awaiting the same task multiple times. The second and
subsequent times it returns a reference to the already-computed value.

This diff also adds some implementations of other utilities that have potential for
standardization as helpers within the test/... area:
- `sync_wait(awaitable)` - See P1171R0
- `manual_reset_event`

Move the definition of the __aligned_allocation_size helper function
from <experimental/memory_resource> to <experimental/__memory>
so it can be more widely used without pulling in memory_resource.

Outstanding work:
- Use C++14 keywords directly rather than macro versions
  eg. use `noexcept` instead of `_NOEXCEPT`).
- Add support for overaligned coroutine frames.
  This may need wording in the Coroutines TS to support passing the extra `std::align_val_t`.
- Eliminate use of `if constexpr` if we want it to compile under C++14.

Patch by @lewissbaker (Lewis Baker).

llvm-svn: 357010
 		2019-03-26 17:46:06 +00:00
clang [CodeGen] Delete never used LValueAlign 2019-03-26 15:39:45 +00:00
clang-tools-extra [clangd][xpc][cmake] Respect explicit value of CLANGD_BUILD_XPC 2019-03-26 03:48:25 +00:00
compiler-rt Fix typos in compiler-rt/lib/builtins/atomic.c 2019-03-23 18:39:54 +00:00
debuginfo-tests Set config.lit_tools_dir, which is needed by lit.llvm.initialize. 2018-11-06 21:54:27 +00:00
libclc sincos: Simplify declaration headers. 2019-03-13 07:13:34 +00:00
libcxx [coroutines] Add std::experimental::task<T> type 2019-03-26 17:46:06 +00:00
libcxxabi Revert "[runtimes] Move libunwind, libc++abi and libc++ to lib/ and include/" 2019-03-08 20:33:55 +00:00
libunwind Revert "[runtimes] Move libunwind, libc++abi and libc++ to lib/ and include/" 2019-03-08 20:33:55 +00:00
lld Reland "[WebAssembly] Add linker options to control feature checking" 2019-03-26 04:11:05 +00:00
lldb [ScriptInterpreterPython] Try to make the sanitizer bot green again. 2019-03-26 16:43:58 +00:00
llgo IR: Support parsing numeric block ids, and emit them in textual output. 2019-03-22 18:27:13 +00:00
llvm [WebAssembly] Support WebAssemblyFunctionInfo serialization 2019-03-26 17:35:35 +00:00
openmp [libomptarget] Introduce LIBOMPTARGET_ENABLE_DEBUG cmake option. 2019-03-26 15:19:15 +00:00
parallel-libs Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
polly Moving ManagedMemoryRewritePass when hybrid option is selected 2019-03-25 23:26:59 +00:00
pstl [pstl][NFC] Remove some warnings 2019-03-25 20:44:07 +00:00
.arcconfig Update monorepo .arcconfig with new project callsign. 2019-01-31 14:34:59 +00:00
.clang-format Add .clang-tidy and .clang-format files to the toplevel of the 2019-01-29 16:43:16 +00:00
.clang-tidy Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
README.md
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README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.