[llvm-commits] [PATCH] Allow Module deletion after function compiled.

[jyasskin at gmail.com]

Reviewers: ,

Message:
Patch at http://codereview.appspot.com/download/issue133043_1.diff

Description:
Fix http://llvm.org/PR4822: allow module deletion after function
compiled.

When functions are compiled, they accumulate references in the
JITResolver's stub maps. This patch removes those references when the
functions are destroyed. It's illegal to destroy a Function when any
thread may still try to call its machine code.

TODO: Write a ValueMap<> class instead of all these CallbackVH
subclasses and explicit constructor calls.

This depends on http://codereview.appspot.com/130080

Please review this at http://codereview.appspot.com/133043

Affected files:
   M lib/ExecutionEngine/JIT/JITEmitter.cpp
   M unittests/ExecutionEngine/JIT/JITTest.cpp
   M unittests/ExecutionEngine/JIT/Makefile