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65202b9329
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Aditya Nandakumar 65202b9329 [GISel]: Implement GlobalISel combiner API. 
https://reviews.llvm.org/D41373

The various components are

GICombinerHelper contains transformations that are common to all
targets. Targets can pick and choose which transformations (at
function/opcode granularity) each pass uses via configuring a
GICombinerInfo.

GICombiner contains some common code and it does the traversal,
driving of combines, worklist management and iterating until
convergence.

GICombinerInfo is an interface with a virtual method called combine.
The combiner info will allow targets to pick and choose (or
implement their own specific combines). CombineInfos can make
use of available combines in GICombineHelper to configure the
transformations for a particular pass. Currently this approach allows
cherry picking transformations from helpers (at function/opcode
granularity) and also allows early returning on specific
transformations. Targets also get to prioritize whether target specific
combines run before/after the opt-in generic combines. Ideally we would
like this part to be configured by both C++ and Tablegen. The
CombinerInfo also has a field which indicates how to deal with
IllegalOps (ie - should we allow to create them/or legalize them?).

A CombinerPass would configure a CombinerInfo, create the GICombiner
with the Info, and call
GICombiner::combineMachineInstrs(MachineFunction&).
This organization is very similar to the GISelLegalizer.

llvm-svn: 323392
2018-01-25 00:41:58 +00:00
bindings [bindings/go] fix vet errors 2017-12-28 04:10:09 +00:00
cmake [cmake] Don't build Native llvm-config when cross compiling if passed by user. 2018-01-21 00:29:00 +00:00
docs Fix up and document controlling ccache via CMake options. 2018-01-24 18:15:08 +00:00
examples PR35705: Fix Chapter 9 example code for API changes to DIBuilder 2017-12-20 19:36:54 +00:00
include [GISel]: Implement GlobalISel combiner API. 2018-01-25 00:41:58 +00:00
lib [GISel]: Implement GlobalISel combiner API. 2018-01-25 00:41:58 +00:00
projects [cmake] Support moving debuginfo-tests to llvm/projects 2017-12-12 17:06:08 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
runtimes [CMake] Support for cross-compilation when build runtimes 2018-01-08 23:50:59 +00:00
test [GlobalISel] Add a requires: asserts to a test. 2018-01-24 22:40:25 +00:00
tools Revert "[ThinLTO] Add call edges' relative block frequency to per-module summary." 2018-01-24 18:15:29 +00:00
unittests [ORC] Add helpers for building orc::SymbolResolvers from legacy findSymbol-style 2018-01-24 23:09:07 +00:00
utils [GlobalISel][TableGen] Fix the statistics for emitted patters 2018-01-25 00:18:52 +00:00
.arcconfig [llvm] Set up .arcconfig to point to Diffusion L repository 2018-01-12 15:37:41 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitattributes [MC] Fix regression tests on Windows when git “core.autocrlf” is set to true. 2017-11-17 21:59:43 +00:00
.gitignore gitignore: Ignore .vs folder (VS2017 config files) 2017-04-08 00:16:58 +00:00
CMakeLists.txt Fix up and document controlling ccache via CMake options. 2018-01-24 18:15:08 +00:00
CODE_OWNERS.TXT Update my email addresses, NFC. 2017-10-26 10:16:54 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT we have now https support for apt.llvm.org. Updating the URL 2018-01-18 19:57:35 +00:00
LICENSE.TXT Bump year to 2017 in LICENSE.txt 2017-01-12 18:02:42 +00:00
llvm.spec.in [Sparc] Implement i64 load/store support for 32-bit sparc. 2015-08-10 19:11:39 +00:00
LLVMBuild.txt Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
README.txt Test commit access 2017-08-18 02:39:28 +00:00
RELEASE_TESTERS.TXT Update my email addresses, NFC. 2017-10-26 10:16:54 +00:00

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