Cleanup include dependencies for LLVMTableGen

Based on the output of include-what-you-use. No other library seems affected by
the new forward declaration.

$ clang++ -E -Iinclude -I../llvm/include

Cleanup include dependencies for LLVMTableGen

Based on the output of include-what-you-use. No other library seems affected by
the new forward declaration.

$ clang++ -E -Iinclude -I../llvm/include ../llvm/lib/TableGen/*.cpp -std=c++14 -fno-rtti -fno-exceptions | wc -l
before: 795231
after: 750654

Related Discourse thread: https://llvm.discourse.group/t/include-what-you-use-include-cleanup
Differential Revision: https://reviews.llvm.org/D118374

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[TableGen] Emit a warning for unused template args

Add a warning to TableGen for unused template arguments in classes and
multiclasses, for example:

multiclass Foo<int x> {
def bar;
}

$

[TableGen] Emit a warning for unused template args

Add a warning to TableGen for unused template arguments in classes and
multiclasses, for example:

multiclass Foo<int x> {
def bar;
}

$ llvm-tblgen foo.td

foo.td:1:20: warning: unused template argument: Foo::x
multiclass Foo<int x> {
^
A flag '--no-warn-on-unused-template-args' is added to disable the
warning. The warning is disabled for LLVM and sub-projects if
'LLVM_ENABLE_WARNINGS=OFF'.

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D109359

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[SystemZ][z/OS][TableGen] TableGen files should be text

This patch sets tablegen files as text. It should have no effect on Windows after this patch landed https://reviews.llvm.org/rG82b3e28e836d2f5

[SystemZ][z/OS][TableGen] TableGen files should be text

This patch sets tablegen files as text. It should have no effect on Windows after this patch landed https://reviews.llvm.org/rG82b3e28e836d2f5c8cfd6e1047b93c088522365a.

Reviewed By: anirudhp

Differential Revision: https://reviews.llvm.org/D100036

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[Windows] Turn off text mode in TableGen and Rewriter to stop CRLF translation

This patch should fix the errors shown on the Windows bots by turning off text mode. I plan to investigate a better fix

[Windows] Turn off text mode in TableGen and Rewriter to stop CRLF translation

This patch should fix the errors shown on the Windows bots by turning off text mode. I plan to investigate a better fix but this should unblock the buildbots for now.

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D99363

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[NFC] Reordering parameters in getFile and getFileOrSTDIN

In future patches I will be setting the IsText parameter frequently so I will refactor the args to be in the following order. I have removed

[NFC] Reordering parameters in getFile and getFileOrSTDIN

In future patches I will be setting the IsText parameter frequently so I will refactor the args to be in the following order. I have removed the FileSize parameter because it is never used.

```
static ErrorOr<std::unique_ptr<MemoryBuffer>>
getFile(const Twine &Filename, bool IsText = false,
bool RequiresNullTerminator = true, bool IsVolatile = false);

static ErrorOr<std::unique_ptr<MemoryBuffer>>
getFileOrSTDIN(const Twine &Filename, bool IsText = false,
bool RequiresNullTerminator = true);

static ErrorOr<std::unique_ptr<MB>>
getFileAux(const Twine &Filename, uint64_t MapSize, uint64_t Offset,
bool IsText, bool RequiresNullTerminator, bool IsVolatile);

static ErrorOr<std::unique_ptr<WritableMemoryBuffer>>
getFile(const Twine &Filename, bool IsVolatile = false);
```

Reviewed By: jhenderson

Differential Revision: https://reviews.llvm.org/D99182

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[NFC] Formatting changes

This patch addresses some formatting changes from the comments in https://reviews.llvm.org/D97785.

Reviewed By: anirudhp

Differential Revision: https://reviews.llvm.org/D9

[NFC] Formatting changes

This patch addresses some formatting changes from the comments in https://reviews.llvm.org/D97785.

Reviewed By: anirudhp

Differential Revision: https://reviews.llvm.org/D99072

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[SystemZ][z/OS] Distinguish between text and binary files on z/OS

This patch consists of the initial changes to help distinguish between text and binary content correctly on z/OS. I would like to ge

[SystemZ][z/OS] Distinguish between text and binary files on z/OS

This patch consists of the initial changes to help distinguish between text and binary content correctly on z/OS. I would like to get feedback from Windows users on setting OF_None for all ToolOutputFiles. This seems to have been done as an optimization to prevent CRLF translation on Windows in the past.

Reviewed By: zibi

Differential Revision: https://reviews.llvm.org/D97785

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[TableGen] Add frontend/backend phase timing capability.

Describe in the BackEnd Developer's Guide. Instrument a few backends.

Remove an old unused timing facility. Add a null backend for timing
th

[TableGen] Add frontend/backend phase timing capability.

Describe in the BackEnd Developer's Guide. Instrument a few backends.

Remove an old unused timing facility. Add a null backend for timing
the parser.

Differential Revision: https://reviews.llvm.org/D91388

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[TableGen] New backend to print detailed records.
Pertinent lints are fixed.

[TableGen] [NFC] Make argv0 const

`argv0` was never being modified. No changes made except to the type.

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D78840

Tablegen: Remove the error for duplicate include files.

This error was originally added a while(7 years) ago when
including multiple files was basically always an error. Tablegen
now has preprocesso

Tablegen: Remove the error for duplicate include files.

This error was originally added a while(7 years) ago when
including multiple files was basically always an error. Tablegen
now has preprocessor support, which allows for building nice
c/c++ style include guards. With the current error being
reported, we unfortunately need to double guard when including
files:

* In user of MyFile.td

#ifndef MYFILE_TD
include MyFile.td
#endif

* In MyFile.td

#ifndef MYFILE_TD
#define MYFILE_TD
...
#endif

Differential Revision: https://reviews.llvm.org/D70410

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Reland r349624: Let TableGen write output only if it changed, instead of doing so in cmake

Move the write-if-changed logic behind a flag and don't pass it
with the MSVC generator. msbuild doesn't ha

Reland r349624: Let TableGen write output only if it changed, instead of doing so in cmake

Move the write-if-changed logic behind a flag and don't pass it
with the MSVC generator. msbuild doesn't have a restat optimization,
so not doing write-if-change there doesn't have a cost, and it
should fix whatever causes PR43385.

llvm-svn: 373664

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Revert rL349624 : Let TableGen write output only if it changed, instead of doing so in cmake, attempt 2

Differential Revision: https://reviews.llvm.org/D55842
-----------------
As discussed on PR433

Revert rL349624 : Let TableGen write output only if it changed, instead of doing so in cmake, attempt 2

Differential Revision: https://reviews.llvm.org/D55842
-----------------
As discussed on PR43385 this is causing Visual Studio msbuilds to perpetually rebuild all tablegen generated files

llvm-svn: 373338

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[TableGen] Skip CRLF conversion when writing output

Doing the CRLF translation while writing the file defeats our
optimization to not update the file if it hasn't changed.

Fixes PR43271.

llvm-svn:

[TableGen] Skip CRLF conversion when writing output

Doing the CRLF translation while writing the file defeats our
optimization to not update the file if it hasn't changed.

Fixes PR43271.

llvm-svn: 371683

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Rename F_{None,Text,Append} to OF_{None,Text,Append}. NFC

F_{None,Text,Append} are kept for compatibility since r334221.

llvm-svn: 367800

Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the ne

Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636

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Let TableGen write output only if it changed, instead of doing so in cmake, attempt 2

This relands r330742:
"""
Let TableGen write output only if it changed, instead of doing so in cmake.

Removes o

Let TableGen write output only if it changed, instead of doing so in cmake, attempt 2

This relands r330742:
"""
Let TableGen write output only if it changed, instead of doing so in cmake.

Removes one subprocess and one temp file from the build for each tablegen
invocation.

No intended behavior change.
"""

In particular, if you see rebuilds after this change that you didn't see
before this change, that's unintended and it's fine to revert this change
again (but let me know).

r330742 got reverted because some people reported that llvm-tblgen ran on every
build after it. This could happen if the depfile output got deleted without
deleting the main .inc output. To fix, make TableGen always write the depfile,
but keep writing the main .inc output only if it has changed. This matches what
we did in cmake before.

Differential Revision: https://reviews.llvm.org/D55842

llvm-svn: 349624

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[TableGen] Preprocessing support

Differential Revision: https://reviews.llvm.org/D54926

llvm-svn: 347686

Reverted r347092 due to the following build fails:
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-bootstrap/builds/8662
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-fast/builds/

Reverted r347092 due to the following build fails:
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-bootstrap/builds/8662
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-fast/builds/26263

llvm-svn: 347129

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Preprocessing support in tablegen.

Differential Revision: https://reviews.llvm.org/D53840

llvm-svn: 347092

Revert r330742: Let TableGen write output only if it changed, instead of doing so in cmake.

This change causes us to re-run tablegen for every single target on
every single build. This is much, much

Revert r330742: Let TableGen write output only if it changed, instead of doing so in cmake.

This change causes us to re-run tablegen for every single target on
every single build. This is much, much worse than the problem being
fixed AFAICT.

On my system, it makes a clean rebuild of `llc` with nothing changed go
from .5s to over 8s. On systems with less parallelism, slower file
systems, or high process startup overhead this will be even more
extreme.

The only way I see this could be a win is in clean builds where we churn
the filesystem. But I think incremental rebuild is more important, and
so if we want to re-instate this, it needs to be done in a way that
doesn't trigger constant re-runs of tablegen.

llvm-svn: 331702

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Remove \brief commands from doxygen comments.

We've been running doxygen with the autobrief option for a couple of
years now. This makes the \brief markers into our comments
redundant. Since they ar

Remove \brief commands from doxygen comments.

We've been running doxygen with the autobrief option for a couple of
years now. This makes the \brief markers into our comments
redundant. Since they are a visual distraction and we don't want to
encourage more \brief markers in new code either, this patch removes
them all.

Patch produced by

for i in $(git grep -l '\\brief'); do perl -pi -e 's/\\brief //g' $i & done

Differential Revision: https://reviews.llvm.org/D46290

llvm-svn: 331272

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Let TableGen write output only if it changed, instead of doing so in cmake.

Removes one subprocess and one temp file from the build for each tablegen
invocation.

No intended behavior change.

https

Let TableGen write output only if it changed, instead of doing so in cmake.

Removes one subprocess and one temp file from the build for each tablegen
invocation.

No intended behavior change.

https://reviews.llvm.org/D45899

llvm-svn: 330742

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Avoid int to string conversion in Twine or raw_ostream contexts.

Some output changes from uppercase hex to lowercase hex, no other functionality change intended.

llvm-svn: 321526

[Support] Rename tool_output_file to ToolOutputFile, NFC

This class isn't similar to anything from the STL, so it shouldn't use
the STL naming conventions.

llvm-svn: 314050