[PATCH] Move CodeGenPrepare into lib/CodeGen

[Quentin Colombet]

Hi,

This patch moves CodeGenPrepare into lib/CodeGen.
This is a follow-up of the RFC: http://lists.cs.uiuc.edu/pipermail/llvmdev/2014-February/070463.html

** Context **

To sum-up CodeGenPrepare relies on the functionalities implemented in TargetLowering.
TargetLowering is part of the library CodeGen, whereas CodeGenPrepare is part of the library ScalarOpts.

This is a layer violation which would introduce eventually a dependence on CodeGen in ScalarOpts.


** Proposed Solution **

Following the feedback of the RFC, CodeGenPrepare is moved into lib/CodeGen.

As one can notice (makefile, CMakeLists) the patch introduces a dependency on libLLVMCodeGen for both opt and bugpoint because of that.

The dependency for bugpoint could be avoid if we were less aggressive in LinkAllPasses.h.


Thanks for your review,
-Quentin

PS: svn move produced a weird diff with CodeGenPrepare.cpp. The file is indeed moved into lib/CodeGen then the small modification on the included files is applied.


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