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Make it possible to create multiple JIT instances at the same time, by removing

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the global TheJIT and TheJITResolver variables.  Lazy compilation is supported
by a global map from a stub address to the JITResolver that knows how to
compile it.

Patch by Olivier Meurant!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95837 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jeffrey Yasskin
2010-02-11 01:07:39 +00:00
parent 09eeac9f5f
commit 40966a7c68
5 changed files with 297 additions and 43 deletions
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docs/ReleaseNotes.html
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@@ -467,6 +467,10 @@ href="http://llvm.org/viewvc/llvm-project?view=rev&revision=85295">defaults
to compiling eagerly</a> to avoid a race condition in the lazy JIT.
Clients that still want the lazy JIT can switch it on by calling
<tt>ExecutionEngine::DisableLazyCompilation(false)</tt>.</li>
<li>It is now possible to create more than one JIT instance in the same process.
These JITs can generate machine code in parallel,
although <a href="http://llvm.org/docs/ProgrammersManual.html#jitthreading">you
still have to obey the other threading restrictions</a>.</li>
</ul>
</div>