[llvm] [ORC] Extract MemoryAccess from ExecutorProcessControl, break up header. (PR #145671)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `flang-aarch64-sharedlibs` running on `linaro-flang-aarch64-sharedlibs` while building `llvm` at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/80/builds/14241

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 5 (build-unified-tree) failure: build (failure)
...
-- Performing Test COMPILER_RT_HAS_aarch64_FLOAT16
-- Performing Test COMPILER_RT_HAS_aarch64_FLOAT16 - Success
-- Performing Test COMPILER_RT_HAS_aarch64_BFLOAT16
-- Performing Test COMPILER_RT_HAS_aarch64_BFLOAT16 - Success
-- For aarch64 builtins preferring aarch64/fp_mode.c to fp_mode.c
-- Configuring done (8.6s)
-- Generating done (0.0s)
-- Build files have been written to: /home/tcwg-buildbot/worker/flang-aarch64-sharedlibs/build/runtimes/builtins-bins
119.045 [280/13/7405] Linking CXX executable bin/mlir-reduce
139.005 [280/11/7407] Building CXX object examples/SpeculativeJIT/CMakeFiles/SpeculativeJIT.dir/SpeculativeJIT.cpp.o
FAILED: examples/SpeculativeJIT/CMakeFiles/SpeculativeJIT.dir/SpeculativeJIT.cpp.o 
/usr/local/bin/c++ -DGTEST_HAS_RTTI=0 -DLLVM_BUILD_STATIC -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/tcwg-buildbot/worker/flang-aarch64-sharedlibs/build/examples/SpeculativeJIT -I/home/tcwg-buildbot/worker/flang-aarch64-sharedlibs/llvm-project/llvm/examples/SpeculativeJIT -I/home/tcwg-buildbot/worker/flang-aarch64-sharedlibs/build/include -I/home/tcwg-buildbot/worker/flang-aarch64-sharedlibs/llvm-project/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -MD -MT examples/SpeculativeJIT/CMakeFiles/SpeculativeJIT.dir/SpeculativeJIT.cpp.o -MF examples/SpeculativeJIT/CMakeFiles/SpeculativeJIT.dir/SpeculativeJIT.cpp.o.d -o examples/SpeculativeJIT/CMakeFiles/SpeculativeJIT.dir/SpeculativeJIT.cpp.o -c /home/tcwg-buildbot/worker/flang-aarch64-sharedlibs/llvm-project/llvm/examples/SpeculativeJIT/SpeculativeJIT.cpp
../llvm-project/llvm/examples/SpeculativeJIT/SpeculativeJIT.cpp:53:16: error: use of undeclared identifier 'SelfExecutorProcessControl'; did you mean 'ExecutorProcessControl'?
   53 |     auto EPC = SelfExecutorProcessControl::Create(
      |                ^~~~~~~~~~~~~~~~~~~~~~~~~~
      |                ExecutorProcessControl
../llvm-project/llvm/include/llvm/ExecutionEngine/Orc/ExecutorProcessControl.h:38:16: note: 'ExecutorProcessControl' declared here
   38 | class LLVM_ABI ExecutorProcessControl {
      |                ^
../llvm-project/llvm/examples/SpeculativeJIT/SpeculativeJIT.cpp:53:44: error: no member named 'Create' in 'llvm::orc::ExecutorProcessControl'
   53 |     auto EPC = SelfExecutorProcessControl::Create(
      |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
2 errors generated.
139.939 [280/10/7408] Building CXX object tools/mlir/lib/ExecutionEngine/CMakeFiles/MLIRJitRunner.dir/JitRunner.cpp.o
140.196 [280/9/7409] Building CXX object tools/llvm-exegesis/lib/AArch64/CMakeFiles/obj.LLVMExegesisAArch64.dir/Target.cpp.o
153.588 [280/8/7410] Building CXX object tools/mlir/lib/ExecutionEngine/CMakeFiles/MLIRExecutionEngine.dir/ExecutionEngine.cpp.o
161.190 [280/7/7411] Building CXX object tools/flang/lib/Parser/CMakeFiles/FortranParser.dir/cmake_pch.hxx.pch
163.657 [280/6/7412] Building CXX object tools/clang/tools/clang-repl/CMakeFiles/clang-repl.dir/ClangRepl.cpp.o
171.493 [280/5/7413] Building CXX object tools/clang/lib/Interpreter/CMakeFiles/obj.clangInterpreter.dir/Interpreter.cpp.o
184.310 [280/4/7414] Building CXX object tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/cmake_pch.hxx.pch
198.242 [280/3/7415] Building CXX object tools/flang/lib/Evaluate/CMakeFiles/FortranEvaluate.dir/cmake_pch.hxx.pch
303.682 [280/2/7416] Building CXX object tools/flang/lib/Frontend/CMakeFiles/flangFrontend.dir/cmake_pch.hxx.pch
326.231 [280/1/7417] Building CXX object tools/flang/lib/Lower/CMakeFiles/FortranLower.dir/cmake_pch.hxx.pch
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/145671