Notation used in this document is explained :ref:`here<amdgpu_syn_instruction_notation>`.
-Overvew
-=======
+Overview
+========
An overview of generic syntax and other features of AMDGPU instructions may be found :ref:`in this document<amdgpu_syn_instructions>`.
Notation used in this document is explained :ref:`here<amdgpu_syn_instruction_notation>`.
-Overvew
-=======
+Overview
+========
An overview of generic syntax and other features of AMDGPU instructions may be found :ref:`in this document<amdgpu_syn_instructions>`.
Notation used in this document is explained :ref:`here<amdgpu_syn_instruction_notation>`.
-Overvew
-=======
+Overview
+========
An overview of generic syntax and other features of AMDGPU instructions may be found :ref:`in this document<amdgpu_syn_instructions>`.
Notation used in this document is explained :ref:`here<amdgpu_syn_instruction_notation>`.
-Overvew
-=======
+Overview
+========
An overview of generic syntax and other features of AMDGPU instructions may be found :ref:`in this document<amdgpu_syn_instructions>`.
Notation used in this document is explained :ref:`here<amdgpu_syn_instruction_notation>`.
-Overvew
-=======
+Overview
+========
An overview of generic syntax and other features of AMDGPU instructions may be found :ref:`in this document<amdgpu_syn_instructions>`.
Notation used in this document is explained :ref:`here<amdgpu_syn_instruction_notation>`.
-Overvew
-=======
+Overview
+========
An overview of generic syntax and other features of AMDGPU instructions may be found :ref:`in this document<amdgpu_syn_instructions>`.
Notation used in this document is explained :ref:`here<amdgpu_syn_instruction_notation>`.
-Overvew
-=======
+Overview
+========
An overview of generic syntax and other features of AMDGPU instructions may be found :ref:`in this document<amdgpu_syn_instructions>`.
Notation used in this document is explained :ref:`here<amdgpu_syn_instruction_notation>`.
-Overvew
-=======
+Overview
+========
An overview of generic syntax and other features of AMDGPU instructions may be found :ref:`in this document<amdgpu_syn_instructions>`.
There's two typical examples of this.
-Some CPUs support multiple instruction sets which can be swiched back and forth
+Some CPUs support multiple instruction sets which can be switched back and forth
on function-call boundaries. For example, MIPS supports the MIPS16 ISA, which
has a smaller instruction encoding than the usual MIPS32 ISA. ARM, similarly,
has the Thumb ISA. In MIPS16 and earlier versions of Thumb, the atomic
The aim of this document is to explain the problem with NEON loads and stores, and the solution that has been implemented in LLVM.
-In this document the term "vector" refers to what the ARM ABI calls a "short vector", which is a sequence of items that can fit in a NEON register. This sequence can be 64 or 128 bits in length, and can constitute 8, 16, 32 or 64 bit items. This document refers to A64 instructions throughout, but is almost applicable to the A32/ARMv7 instruction sets also. The ABI format for passing vectors in A32 is sligtly different to A64. Apart from that, the same concepts apply.
+In this document the term "vector" refers to what the ARM ABI calls a "short vector", which is a sequence of items that can fit in a NEON register. This sequence can be 64 or 128 bits in length, and can constitute 8, 16, 32 or 64 bit items. This document refers to A64 instructions throughout, but is almost applicable to the A32/ARMv7 instruction sets also. The ABI format for passing vectors in A32 is slightly different to A64. Apart from that, the same concepts apply.
Example: C-level intrinsics -> assembly
---------------------------------------
as it "falls" through the DAG.
If a function's basic block graph is a DAG, then block masses are valid block
-frequencies. This works poorly in practise though, since downstream users rely
+frequencies. This works poorly in practice though, since downstream users rely
on adding block frequencies together without hitting the maximum.
Loop Scale
miscompilation. Programs should be temporarily modified to disable outputs
that are likely to vary from run to run.
-* In the `crash debugger`_, ``bugpoint`` does not distiguish different crashes
+* In the `crash debugger`_, ``bugpoint`` does not distinguish different crashes
during reduction. Thus, if new crash or miscompilation happens, ``bugpoint``
will continue with the new crash instead. If you would like to stick to
particular crash, you should write check scripts to validate the error
in this section will all use the CMake ``function`` block, but this all applies
to the ``macro`` block as well.
-CMake commands can have named arguments that are requried at every call site. In
+CMake commands can have named arguments that are required at every call site. In
addition, all commands will implicitly accept a variable number of extra
arguments (In C parlance, all commands are varargs functions). When a command is
invoked with extra arguments (beyond the named ones) CMake will store the full
Sometimes, mostly for debugging purposes, it is useful to change the number of
physical registers available in the target architecture. This must be done
-statically, inside the ``TargetRegsterInfo.td`` file. Just ``grep`` for
+statically, inside the ``TargetRegisterInfo.td`` file. Just ``grep`` for
``RegisterClass``, the last parameter of which is a list of registers. Just
commenting some out is one simple way to avoid them being used. A more polite
way is to explicitly exclude some registers from the *allocation order*. See the
such as thunks and vararg functions, enough space to cache the argument
registers. Therefore, the parameter area is minimally 32 bytes (64 bytes in 64
bit mode.) Also note that since the parameter area is a fixed offset from the
-top of the frame, that a callee can access its spilt arguments using fixed
+top of the frame, that a callee can access its split arguments using fixed
offsets from the stack pointer (or base pointer.)
Combining the information about the linkage, parameter areas and alignment. A
``std::sort`` uses a non-stable sorting algorithm in which the order of equal
elements is not guaranteed to be preserved. Thus using ``std::sort`` for a
-container having equal elements may result in non-determinstic behavior.
+container having equal elements may result in non-deterministic behavior.
To uncover such instances of non-determinism, LLVM has introduced a new
llvm::sort wrapper function. For an EXPENSIVE_CHECKS build this will randomly
shuffle the container before sorting. Default to using ``llvm::sort`` instead
In cases where range-based ``for`` loops can't be used and it is necessary
to write an explicit iterator-based loop, pay close attention to whether
-``end()`` is re-evaluted on each loop iteration. One common mistake is to
+``end()`` is re-evaluated on each loop iteration. One common mistake is to
write a loop in this style:
.. code-block:: c++
"shards", and run only one of them. Must be used with the
``--run-shard=N`` option, which selects the shard to run. The environment
variable ``LIT_NUM_SHARDS`` can also be used in place of this
- option. These two options provide a coarse mechanism for paritioning large
+ option. These two options provide a coarse mechanism for partitioning large
testsuites, for parallel execution on separate machines (say in a large
testing farm).
.. option:: -gen-dag-isel
- Generate a DAG (Directed Acycle Graph) instruction selector.
+ Generate a DAG (Directed Acyclic Graph) instruction selector.
.. option:: -gen-asm-matcher
* `Memory space inference
<http://llvm.org/doxygen/NVPTXInferAddressSpaces_8cpp_source.html>`_ --
- In PTX, we can operate on pointers that are in a paricular "address space"
+ In PTX, we can operate on pointers that are in a particular "address space"
(global, shared, constant, or local), or we can operate on pointers in the
"generic" address space, which can point to anything. Operations in a
non-generic address space are faster, but pointers in CUDA are not explicitly
which fit in 32-bits at runtime. This optimization provides a fast path for
this common case.
-* Aggressive loop unrooling and function inlining -- Loop unrolling and
+* Aggressive loop unrolling and function inlining -- Loop unrolling and
function inlining need to be more aggressive for GPUs than for CPUs because
control flow transfer in GPU is more expensive. More aggressive unrolling and
inlining also promote other optimizations, such as constant propagation and
============
LLVM's code coverage mapping format is used to provide code coverage
-analysis using LLVM's and Clang's instrumenation based profiling
+analysis using LLVM's and Clang's instrumentation based profiling
(Clang's ``-fprofile-instr-generate`` option).
This document is aimed at those who use LLVM's code coverage mapping to provide
1. The graph nodes in the paper represent three main program components, namely *assignment statements*, *for loop headers* and *while loop headers*. In this implementation, DDG nodes naturally represent LLVM IR instructions. An assignment statement in this implementation typically involves a node representing the ``store`` instruction along with a number of individual nodes computing the right-hand-side of the assignment that connect to the ``store`` node via a def-use edge. The loop header instructions are not represented as special nodes in this implementation because they have limited uses and can be easily identified, for example, through ``LoopAnalysis``.
2. The paper describes five types of dependency edges between nodes namely *loop dependency*, *flow-*, *anti-*, *output-*, and *input-* dependencies. In this implementation *memory* edges represent the *flow-*, *anti-*, *output-*, and *input-* dependencies. However, *loop dependencies* are not made explicit, because they mainly represent association between a loop structure and the program elements inside the loop and this association is fairly obvious in LLVM IR itself.
- 3. The paper describes two types of pi-blocks; *recurrences* whose bodies are SCCs and *IN* nodes whose bodies are not part of any SCC. In this impelmentation, pi-blocks are only created for *recurrences*. *IN* nodes remain as simple DDG nodes in the graph.
+ 3. The paper describes two types of pi-blocks; *recurrences* whose bodies are SCCs and *IN* nodes whose bodies are not part of any SCC. In this implementation, pi-blocks are only created for *recurrences*. *IN* nodes remain as simple DDG nodes in the graph.
References
encouraged to review other peoples' patches as well, but you aren't required
to do so.
-Current Contributors - Transfering from SVN
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Current Contributors - Transferring from SVN
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
If you had commit access to SVN and would like to request commit access to
GitHub, please email `llvm-admin <mailto:llvm-admin@lists.llvm.org>`_ with your
SVN username and GitHub username.
is used by LLVM.
* Some subprojects are impractical or uninteresting to relicense (e.g. llvm-gcc
and dragonegg). These will be split off from the LLVM project (e.g. to
- separate Github projects), allowing interested people to continue their
+ separate GitHub projects), allowing interested people to continue their
development elsewhere.
To relicense LLVM, we will be seeking approval from all of the copyright holders
Q2: If at any time after my contribution, I am able to license other patent
claims that would have been subject to Apache's Grant of Patent License if
- they were licenseable by me at the time of my contribution, do those other
+ they were licensable by me at the time of my contribution, do those other
claims become subject to the Grant of Patent License?
A2: Yes.
^^^^^^^^^^^^^^^^^^^^^^
In order to support creating multiple sections with the same name and comdat,
-it is possible to add an unique number at the end of the ``.seciton`` directive.
+it is possible to add an unique number at the end of the ``.section`` directive.
For example, the following code creates two sections named ``.text``.
.. code-block:: gas
#. For languages with numerous rarely executed guard conditions (e.g. null
checks, type checks, range checks) consider adding an extra execution or
- two of LoopUnswith and LICM to your pass order. The standard pass order,
+ two of LoopUnswitch and LICM to your pass order. The standard pass order,
which is tuned for C and C++ applications, may not be sufficient to remove
all dischargeable checks from loops.
A |LLVM IR fuzzer| aimed at finding bugs in optimization passes.
-It receives optimzation pipeline and runs it for each fuzzer input.
+It receives optimization pipeline and runs it for each fuzzer input.
Interface of this fuzzer almost directly mirrors ``llvm-isel-fuzzer``. Both
``mtriple`` and ``passes`` arguments are required. Passes are specified in a
| | overridden with ``LLVM_DYLIB_COMPONENTS``. The |
| | default contains most of LLVM and is defined in |
| | ``tools/llvm-shlib/CMakelists.txt``. This option is|
-| | not avialable on Windows. |
+| | not available on Windows. |
+-------------------------+----------------------------------------------------+
| LLVM_OPTIMIZED_TABLEGEN | Builds a release tablegen that gets used during |
| | the LLVM build. This can dramatically speed up |
Call an intrinsic
The _W_SIDE_EFFECTS version is considered to have unknown side-effects and
-as such cannot be reordered acrosss other side-effecting instructions.
+as such cannot be reordered across other side-effecting instructions.
.. note::
GWP-ASan is not a replacement for a traditional allocator. Instead, it works by
inserting stubs into a supporting allocator to redirect allocations to GWP-ASan
when they're chosen to be sampled. These stubs are generally implemented in the
-implementaion of ``malloc()``, ``free()`` and ``realloc()``. The stubs are
+implementation of ``malloc()``, ``free()`` and ``realloc()``. The stubs are
extremely small, which makes using GWP-ASan in most allocators fairly trivial.
The stubs follow the same general pattern (example ``malloc()`` pseudocode
below):
Pandaboard, have become hard-float platforms. There are a number of
choices when using CMake. Autoconf usage is deprecated as of 3.8.
- Building LLVM/Clang in ``Relese`` mode is preferred since it consumes
+ Building LLVM/Clang in ``Release`` mode is preferred since it consumes
a lot less memory. Otherwise, the building process will very likely
fail due to insufficient memory. It's also a lot quicker to only build
the relevant back-ends (ARM and AArch64), since it's very unlikely that
Use Ninja instead of Make: "-G Ninja"
Build with assertions on: "-DLLVM_ENABLE_ASSERTIONS=True"
Force Python2: "-DPYTHON_EXECUTABLE=/usr/bin/python2"
- Local (non-sudo) install path: "-DCMAKE_INSTALL_PREFIX=$HOME/llvm/instal"
+ Local (non-sudo) install path: "-DCMAKE_INSTALL_PREFIX=$HOME/llvm/install"
CPU flags: "DCMAKE_C_FLAGS=-mcpu=cortex-a15" (same for CXX_FLAGS)
After that, just typing ``make -jN`` or ``ninja`` will build everything.
``qemu-arm`` should be available as a package for your Linux distribution.
-The most complicated of the prequisites to satisfy is the arm-linux-gnueabihf
+The most complicated of the prerequisites to satisfy is the arm-linux-gnueabihf
sysroot. In theory it is possible to use the Linux distributions multiarch
support to fulfill the dependencies for building but unfortunately due to
/usr/local/include being added some host includes are selected. The easiest way
A ``llvm.dbg.value`` intrinsic describes the direct value of a source variable.
The first operand of the intrinsic may be a direct or indirect value. A
-DIExpresion attached to the intrinsic refines the first operand to produce a
+DIExpression attached to the intrinsic refines the first operand to produce a
direct value. For example, if the first operand is an indirect value, it may be
-necessary to insert ``DW_OP_deref`` into the DIExpresion in order to produce a
+necessary to insert ``DW_OP_deref`` into the DIExpression in order to produce a
valid debug intrinsic.
.. note::
``!llvm.dependent-libraries``. Each operand is expected to be a metadata node
which should contain a single string operand.
-For example, the following metadata section contains two library specfiers::
+For example, the following metadata section contains two library specifiers::
!0 = !{!"a library specifier"}
!1 = !{!"another library specifier"}
Overview:
"""""""""
-Reads a number of scalar values sequentially from memory location provided in '``ptr``' and spreads them in a vector. The '``mask``' holds a bit for each vector lane. The number of elements read from memory is equal to the number of '1' bits in the mask. The loaded elements are positioned in the destination vector according to the sequence of '1' and '0' bits in the mask. E.g., if the mask vector is '10010001', "explandload" reads 3 values from memory addresses ptr, ptr+1, ptr+2 and places them in lanes 0, 3 and 7 accordingly. The masked-off lanes are filled by elements from the corresponding lanes of the '``passthru``' operand.
+Reads a number of scalar values sequentially from memory location provided in '``ptr``' and spreads them in a vector. The '``mask``' holds a bit for each vector lane. The number of elements read from memory is equal to the number of '1' bits in the mask. The loaded elements are positioned in the destination vector according to the sequence of '1' and '0' bits in the mask. E.g., if the mask vector is '10010001', "expandload" reads 3 values from memory addresses ptr, ptr+1, ptr+2 and places them in lanes 0, 3 and 7 accordingly. The masked-off lanes are filled by elements from the corresponding lanes of the '``passthru``' operand.
Arguments:
that trigger new code coverage will be merged into the first corpus
directory. Defaults to 0. This flag can be used to minimize a corpus.
``-merge_control_file``
- Specify a control file used for the merge proccess.
+ Specify a control file used for the merge process.
If a merge process gets killed it tries to leave this file in a state
suitable for resuming the merge. By default a temporary file will be used.
``-minimize_crash``
collect value profiles for the parameters of compare instructions
and treat some new values as new coverage.
-The current imlpementation does roughly the following:
+The current implementation does roughly the following:
* The compiler instruments all CMP instructions with a callback that receives both CMP arguments.
* The callback computes `(caller_pc&4095) | (popcnt(Arg1 ^ Arg2) << 12)` and uses this value to set a bit in a bitset.
Contextual markups
------------------
-Annoated assembly display will supply contextual markup to help clients more
+Annotated assembly display will supply contextual markup to help clients more
efficiently implement things like pretty printers. Most markup will be target
independent, so clients can effectively provide good display without any target
specific knowledge.
==============
See `HardwareAssistedAddressSanitizer`_ for a general overview of a
-tag-based approach to memory safety. MemTagSanitizer followes a
+tag-based approach to memory safety. MemTagSanitizer follows a
similar implementation strategy, but with the tag storage (shadow)
provided by the hardware.
// Call into JIT'd code.
Entry();
-The builder clasess provide a number of configuration options that can be
+The builder classes provide a number of configuration options that can be
specified before the JIT instance is constructed. For example:
.. code-block:: c++
references are resolved, and symbol resolvers are no longer used. See the
section `Design Overview`_ for more details.
- Unless multiple JITDylibs are needed to model linkage relationsips, ORCv1
+ Unless multiple JITDylibs are needed to model linkage relationships, ORCv1
clients should place all code in the main JITDylib (returned by
``ExecutionSession::getMainJITDylib()``). MCJIT clients should use LLJIT
(see `LLJIT and LLLazyJIT`_).
Note that, on Unix-like platforms, LLVM requires the presence of GCC's atomic
intrinsics in order to support threaded operation. If you need a
-multhreading-capable LLVM on a platform without a suitably modern system
+multithreading-capable LLVM on a platform without a suitably modern system
compiler, consider compiling LLVM and LLVM-GCC in single-threaded mode, and
using the resultant compiler to build a copy of LLVM with multithreading
support.
.. _polymorphism:
-Designing Type Hiercharies and Polymorphic Interfaces
+Designing Type Hierarchies and Polymorphic Interfaces
-----------------------------------------------------
There are two different design patterns that tend to result in the use of
describing this technique in more detail.
#. `Sean Parent's Papers and Presentations
<http://github.com/sean-parent/sean-parent.github.com/wiki/Papers-and-Presentations>`_
- - A Github project full of links to slides, video, and sometimes code.
+ - A GitHub project full of links to slides, video, and sometimes code.
When deciding between creating a type hierarchy (with either tagged or virtual
dispatch) and using templates or concepts-based polymorphism, consider whether
header source: `Type.h <http://llvm.org/doxygen/Type_8h_source.html>`_
-doxygen info: `Type Clases <http://llvm.org/doxygen/classllvm_1_1Type.html>`_
+doxygen info: `Type Classes <http://llvm.org/doxygen/classllvm_1_1Type.html>`_
The Core LLVM classes are the primary means of representing the program being
inspected or transformed. The core LLVM classes are defined in header files in
14. Update links on the LLVM website pointing to viewvc/klaus/phab etc. to
point to GitHub instead.
-Github Repository Description
+GitHub Repository Description
=============================
Monorepo
----------------
The LLVM git repository hosted at https://github.com/llvm/llvm-project contains all
-sub-projects in a single source tree. It is often refered to as a monorepo and
+sub-projects in a single source tree. It is often referred to as a monorepo and
mimics an export of the current SVN repository, with each sub-project having its
own top-level directory. Not all sub-projects are used for building toolchains.
For example, www/ and test-suite/ are not part of the monorepo.
1GB for the monorepo), and the commit rate of LLVM may cause more frequent
`git push` collisions when upstreaming. Affected contributors may be able to
use the SVN bridge or the single-subproject Git mirrors. However, it's
- undecided if these projects will continue to be mantained.
+ undecided if these projects will continue to be maintained.
* Using the monolithic repository may add overhead for those *integrating* a
standalone sub-project, even if they aren't contributing to it, due to the
same disk space concern as the point above. The availability of the
usual.
Note that when you fetch you'll likely pull in changes to sub-projects you don't
-care about. If you are using spasre checkout, the files from other projects
+care about. If you are using sparse checkout, the files from other projects
won't appear on your disk. The only effect is that your commit hash changes.
You can check whether the changes in the last fetch are relevant to your commit
local branch to the corresponding upstream branch. If local branches
have no corresponding upstream branch, then the creation of
``local/octopus/<local branch>`` need not use ``git-merge-base`` to
-pinpont its root commit; it may simply be branched from the
+pinpoint its root commit; it may simply be branched from the
appropriate component branch (say, ``llvm/local_release_X``).
Zipping local history
umbrella and clang is a submodule in llvm). The file
``submodule-map.txt`` is a list of pairs, one per line. The first
pair item describes the path to a submodule in the umbrella
-repository. The second pair item secribes the path where trees for
+repository. The second pair item describes the path where trees for
that submodule should be written in the zipped history.
Let's say your umbrella repository is actually the llvm repository and
--tag-prefix="myrepo-"
)
- # Preserve release braches.
+ # Preserve release branches.
for ref in $(git -C my-monorepo for-each-ref --format="%(refname)" \
refs/remotes/myrepo/release); do
branch=${ref#refs/remotes/myrepo/}
=====================
-Test-Suite Extentions
+Test-Suite Extensions
=====================
.. contents::
------------------
https://asc.llnl.gov/coral-2-benchmarks/
-Many of its programs have already been integreated in
+Many of its programs have already been integrated in
MultiSource/Benchmarks/DOE-ProxyApps-C and
MultiSource/Benchmarks/DOE-ProxyApps-C++.
In some cases renaming acronyms to the full type name will result in overly
verbose code. Unlike most classes, a variable's scope is limited and therefore
some of its purpose can implied from that scope, meaning that fewer words are
-necessary to give it a clear name. For example, in an optization pass the reader
+necessary to give it a clear name. For example, in an optimization pass the reader
can assume that a variable's purpose relates to optimization and therefore an
``OptimizationRemarkEmitter`` variable could be given the name ``remarkEmitter``
or even ``remarker``.
* Rename (or link) ``clang+llvm-REL-ARCH-ENV`` to the .install directory
-* Tar that into the same name with ``.tar.gz`` extensioan from outside the
+* Tar that into the same name with ``.tar.gz`` extension from outside the
directory
* Make it available for the release manager to download
After any incident, the advisory committee will make a report on the situation
to the LLVM Foundation board. The board may choose to make a public statement
about the incident. If that's the case, the identities of anyone involved will
-remain confidential unless instructed by those inviduals otherwise.
+remain confidential unless instructed by those individuals otherwise.
Appealing
=========
In general, it is **not** appropriate to appeal a particular decision on
a public mailing list. Doing so would involve disclosure of information which
-whould be confidential. Disclosing this kind of information publicly may be
+would be confidential. Disclosing this kind of information publicly may be
considered a separate and (potentially) more serious violation of the Code of
Conduct. This is not meant to limit discussion of the Code of Conduct, the
advisory board itself, or the appropriateness of responses in general, but
foo(const foo&) = deleted;
};
-A C++ frontend would generate follwing:
+A C++ frontend would generate following:
.. code-block:: text
!17 = !DISubprogram(name: "foo", scope: !11, file: !1, line: 5, type: !18, scopeLine: 5, flags: DIFlagPublic | DIFlagPrototyped, spFlags: DISPFlagDeleted)
-and this will produce an additional DWARF attibute as:
+and this will produce an additional DWARF attribute as:
.. code-block:: text
This will inject synthetic DI to ``sample.ll`` run the ``pass-to-test``
and then check for missing DI.
-Some other ways to run debugify are avaliable:
+Some other ways to run debugify are available:
.. code-block:: bash
A given class can only be defined once. A ``class`` declaration is
considered to define the class if any of the following is true:
-.. break ObjectBody into its consituents so that they are present here?
+.. break ObjectBody into its constituents so that they are present here?
#. The :token:`TemplateArgList` is present.
#. The :token:`Body` in the :token:`ObjectBody` is present and is not empty.
It is recommended to add ``llvm.loop.disable_nonforced`` to
``llvm.loop.distribute.followup_fallback``. This avoids that the
-fallback version (which is likely never executed) is further optimzed
+fallback version (which is likely never executed) is further optimized
which would increase the code size.
Versioning LICM
The file has a header followed by a sequence of discriminated record types.
-The endianness of byte fields matches the endianess of the platform which
+The endianness of byte fields matches the endianness of the platform which
produced the trace file.
it is parsed. This allows dynamic types of nodes. But the YAML I/O model uses
static typing, so there are limits to how you can use tags with the YAML I/O
model. Recently, we added support to YAML I/O for checking/setting the optional
-tag on a map. Using this functionality it is even possbile to support different
+tag on a map. Using this functionality it is even possible to support different
mappings, as long as they are convertible.
To check a tag, inside your mapping() method you can use io.mapTag() to specify
llvm TargetMachines (which are not thread safe) as needed for compiles. After
this, we initialize our supporting members: ``DL``, ``Mangler`` and ``Ctx`` with
the input DataLayout, the ExecutionSession and DL member, and a new default
-constucted LLVMContext respectively. Now that our members have been initialized,
+constructed LLVMContext respectively. Now that our members have been initialized,
so the one thing that remains to do is to tweak the configuration of the
*JITDylib* that we will store our code in. We want to modify this dylib to
contain not only the symbols that we add to it, but also the symbols from our
Next we have a named constructor, ``Create``, which will build a KaleidoscopeJIT
instance that is configured to generate code for our host process. It does this
-by first generating a JITTargetMachineBuilder instance using that clases's
+by first generating a JITTargetMachineBuilder instance using that classes'
detectHost method and then using that instance to generate a datalayout for
the target process. Each of these operations can fail, so each returns its
result wrapped in an Expected value [3]_ that we must check for error before
+-----------------------------+-----------------------------------------------+
.. [3] See the ErrorHandling section in the LLVM Programmer's Manual
- (http://llvm.org/docs/ProgrammersManual.html#error-handling)
\ No newline at end of file
+ (http://llvm.org/docs/ProgrammersManual.html#error-handling)
TransformFunction Transform;
};
- // From IRTransfomrLayer.cpp:
+ // From IRTransformLayer.cpp:
IRTransformLayer::IRTransformLayer(ExecutionSession &ES,
IRLayer &BaseLayer,
let double_type = double_type context
The static variables will be used during code generation.
-``Codgen.the_module`` is the LLVM construct that contains all of the
+``Codegen.the_module`` is the LLVM construct that contains all of the
functions and global variables in a chunk of code. In many ways, it is
the top-level structure that the LLVM IR uses to contain code.
With these basics in place, we can start talking about how to generate
code for each expression. Note that this assumes that the
-``Codgen.builder`` has been set up to generate code *into* something.
+``Codegen.builder`` has been set up to generate code *into* something.
For now, we'll assume that this has already been done, and we'll just
use it to emit code.
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