Returning the error to clients provides an opportunity to introduce readers to
the Expected and Error APIs and makes the tutorial more useful as a starting
point for a real JIT class, while only slightly complicating the code.
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LLVM_ON_WIN32 is set exactly with MSVC and MinGW (but not Cygwin) in
HandleLLVMOptions.cmake, which is where _WIN32 defined too. Just use the
default macro instead of a reinvented one.
See thread "Replacing LLVM_ON_WIN32 with just _WIN32" on llvm-dev and cfe-dev.
No intended behavior change.
This moves over all uses of the macro, but doesn't remove the definition
of it in (llvm-)config.h yet.
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r274441 introduced Chapter 10 of "Implementing a Language with LLVM" tutorial,
which caused all files in the tutorial to start using two digit numbering. But
many links were not changed and therefore appear to be broken. This patch
addresses described issue.
As a result, following command does not produce any output anymore:
$ grep -nR '<LangImpl[0-9].html>' ./docs/tutorial/
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Many quoted code blocks were not in sync with the actual toy.cpp
files. Improve tutorial text slightly in several places.
Added some step descriptions crucial to avoid crashes (like
InitializeNativeTarget* calls).
Solve/workaround problems with Windows (JIT'ed method not found, using
custom and standard library functions from host process).
Patch by: Moritz Kroll <moritz.kroll@gmx.de>
Differential Revision: https://reviews.llvm.org/D29864
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The dump() functions are meant to be used in a debugger, code should
typically use something like print(errs());
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This patch replaces RuntimeDyld::SymbolInfo with JITSymbol: A symbol class
that is capable of lazy materialization (i.e. the symbol definition needn't be
emitted until the address is requested). This can be used to support common
and weak symbols in the JIT (though this is not implemented in this patch).
For consistency, RuntimeDyld::SymbolResolver is renamed to JITSymbolResolver.
For space efficiency a new class, JITEvaluatedSymbol, is introduced that
behaves like the old RuntimeDyld::SymbolInfo - i.e. it is just a pair of an
address and symbol flags. Instances of JITEvaluatedSymbol can be used in
symbol-tables to avoid paying the space cost of the materializer.
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Add an overview of stubs and compile callbacks before the discussion of the
source changes.
-- This line, and those below, will be ignored--
M docs/tutorial/BuildingAJIT3.rst
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This new chapter describes compiling LLVM IR to object files.
The new chaper is chapter 8, so later chapters have been renumbered.
Since this brings us to 10 chapters total, I've also needed to rename
the other chapters to use two digit numbering.
Differential Revision: http://reviews.llvm.org/D18070
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Nearly all the changes to this pass have been done while maintaining and
updating other parts of LLVM. LLVM has had another pass, SROA, which
has superseded ScalarReplAggregates for quite some time.
Differential Revision: http://reviews.llvm.org/D21316
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This chapter discusses IR optimizations, the ORC IRTransformLayer, and the ORC
layer concept itself.
The text is still pretty rough, but I think the main ideas are there. Feedback
is very welcome, as always.
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This tidies up some code that was manually constructing RuntimeDyld::SymbolInfo
instances from JITSymbols. It will save more mess in the future when
JITSymbol::getAddress is extended to return an Expected<TargetAddress> rather
than just a TargetAddress, since we'll be able to embed the error checking in
the conversion.
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* Various tidy-up and streamlining of existing discussion.
* Describes findSymbol and removeModule.
Chapter 1 is now rough but essentially complete in terms of content.
Feedback, patches etc. very welcome.
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This text was accidentally left in when the original document was copied from
Chapter 7 of the Kaleidoscope language series.
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