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Author SHA1 Message Date
Quentin Colombet bde158cbc7 [CMake] Produce an empty library for GlobalISel when not building it. 
The rational for this change is that LLVMBuild cannot express conditional 
dependencies. Therefore, when we start optionally using GlobalISel library for 
say AArch64, without that change, all the tools that use the AArch64 library 
would need to explicitly link with GlobalISel when we ask for it.

This does not scale.

Instead, we will set the dependencies between the target and GlobalISel and if 
we did not ask to build GlobalISel, the library will just be empty.

Thanks to Chris Bieneman and Mehdi Animi for the idea.

llvm-svn: 260566
 2016-02-11 19:18:27 +00:00
Quentin Colombet 74d7d2f00b [GlobalISel] Teach the IRTranslator how to lower returns. 
llvm-svn: 260562
 2016-02-11 18:53:28 +00:00
Quentin Colombet a7fae162e6 [GlobalISel][IRTranslator] Change the ownership of the MIRBuilder field. 
llvm-svn: 260551
 2016-02-11 17:53:23 +00:00
Quentin Colombet 4f0ec8d2b0 [GlobalISel][IRTranslator] Fix a typo in assert. 
llvm-svn: 260550
 2016-02-11 17:52:28 +00:00
Quentin Colombet 17c494b91c [GlobalISel][IRTranslator] Teach the pass how to translate Add instructions. 
llvm-svn: 260549
 2016-02-11 17:51:31 +00:00
Quentin Colombet 2ad1f851a1 [GlobalISel] Add a MachineIRBuilder class. 
Helper class to build machine instrs. This is a higher abstraction
than MachineInstrBuilder.

llvm-svn: 260547
 2016-02-11 17:44:59 +00:00
Quentin Colombet 2ecff3bff2 [GlobalISel] More detailed skeleton for the IRTranslator. 
llvm-svn: 260456
 2016-02-10 22:59:27 +00:00
Andrew Wilkins a7a8ab71aa [GlobalISel] make library an optional component 
Summary:
Mark the LLVMGlobalISel library as optional in
LLVMBuild.txt, since the library is only built
if LLVM_BUILD_GLOBAL_ISEL is set. Without doing
this, llvm-config includes the library in the
list of components regardless of whether it's
built, and then will error out when asked for
the library names/paths.

Reviewers: qcolombet

Subscribers: joker.eph, llvm-commits, vkalintiris

Differential Revision: http://reviews.llvm.org/D16386

llvm-svn: 258379
 2016-01-21 01:41:03 +00:00
Quentin Colombet 105cf2b179 [GlobalISel] Add the proper cmake plumbing. 
This patch adds the necessary plumbing to cmake to build the sources related to
GlobalISel.

To build the sources related to GlobalISel, we need to add -DBUILD_GLOBAL_ISEL=ON.
By default, this is OFF, thus GlobalISel sources will not impact people that do
not explicitly opt-in.

Differential Revision: http://reviews.llvm.org/D15983

llvm-svn: 258344
 2016-01-20 20:58:56 +00:00