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<div class="moz-cite-prefix">On 05/26/2017 07:47 PM, Zachary Turner
via llvm-dev wrote:<br>
</div>
<blockquote
cite="mid:CAAErz9hZbs7tzGr7ZgxiBb1NvTfh22HPsfg=_8P8k8FAxthJtw@mail.gmail.com"
type="cite">
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<div dir="ltr">Changing a header file somewhere and having to
spend 10 minutes waiting for a build leads to a lot of wasted
developer time.
<div><br>
</div>
<div>The real culprit here is tablegen. Can we split support
and ADT into two - the parts that tablegen depends on and the
parts that it doesn't?</div>
</div>
</blockquote>
<br>
What's the actual problem here? Is it that TableGen regenerates
different files and so we then need to rebuild all dependencies of
those files? Maybe we should use a diff-and-update approach (I
thought, however, that we already did that).<br>
<br>
-Hal<br>
<br>
<blockquote
cite="mid:CAAErz9hZbs7tzGr7ZgxiBb1NvTfh22HPsfg=_8P8k8FAxthJtw@mail.gmail.com"
type="cite">
<div dir="ltr">
<div><br>
</div>
<div>From what I can gather, Tablegen currently depends on these
headers and all of their transitive dependencies.</div>
<div><br>
</div>
<div>
<div>#include "llvm/Support/Casting.h"</div>
<div>#include "llvm/Support/CommandLine.h"</div>
<div>#include "llvm/Support/Compiler.h"</div>
<div>#include "llvm/Support/DataTypes.h"</div>
<div>#include "llvm/Support/Debug.h"</div>
<div>#include "llvm/Support/Error.h"</div>
<div>#include "llvm/Support/ErrorHandling.h"</div>
<div>#include "llvm/Support/Format.h"</div>
<div>#include "llvm/Support/FormattedStream.h"</div>
<div>#include "llvm/Support/LEB128.h"</div>
<div>#include "llvm/Support/LowLevelTypeImpl.h"</div>
<div>#include "llvm/Support/ManagedStatic.h"</div>
<div>#include "llvm/Support/MathExtras.h"</div>
<div>#include "llvm/Support/MemoryBuffer.h"</div>
<div>#include "llvm/Support/PrettyStackTrace.h"</div>
<div>#include "llvm/Support/Regex.h"</div>
<div>#include "llvm/Support/SMLoc.h"</div>
<div>#include "llvm/Support/ScopedPrinter.h"</div>
<div>#include "llvm/Support/Signals.h"</div>
<div>#include "llvm/Support/SourceMgr.h"</div>
<div>#include "llvm/Support/raw_ostream.h"</div>
<div><br>
</div>
<div>#include "llvm/ADT/APInt.h"</div>
<div>#include "llvm/ADT/ArrayRef.h"</div>
<div>#include "llvm/ADT/BitVector.h"</div>
<div>#include "llvm/ADT/CachedHashString.h"</div>
<div>#include "llvm/ADT/DenseSet.h"</div>
<div>#include "llvm/ADT/IndexedMap.h"</div>
<div>#include "llvm/ADT/IntEqClasses.h"</div>
<div>#include "llvm/ADT/MapVector.h"</div>
<div>#include "llvm/ADT/Optional.h"</div>
<div>#include "llvm/ADT/PointerUnion.h"</div>
<div>#include "llvm/ADT/STLExtras.h"</div>
<div>#include "llvm/ADT/SetVector.h"</div>
<div>#include "llvm/ADT/SmallPtrSet.h"</div>
<div>#include "llvm/ADT/SmallSet.h"</div>
<div>#include "llvm/ADT/SmallVector.h"</div>
<div>#include "llvm/ADT/SparseBitVector.h"</div>
<div>#include "llvm/ADT/Statistic.h"</div>
<div>#include "llvm/ADT/StringExtras.h"</div>
<div>#include "llvm/ADT/StringMap.h"</div>
<div>#include "llvm/ADT/StringRef.h"</div>
<div>#include "llvm/ADT/StringSet.h"</div>
<div>#include "llvm/ADT/StringSwitch.h"</div>
<div>#include "llvm/ADT/TinyPtrVector.h"</div>
<div>#include "llvm/ADT/Twine.h"</div>
</div>
<div><br>
</div>
<div>
<div><br class="inbox-inbox-Apple-interchange-newline">
Is this something worth putting effort into? If so, I
volunteer.</div>
<br class="inbox-inbox-Apple-interchange-newline">
</div>
</div>
<br>
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</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Hal Finkel
Lead, Compiler Technology and Programming Languages
Leadership Computing Facility
Argonne National Laboratory</pre>
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