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Daniil Suchkov 8cab69aed5 [InstCombine] Fold PHIs with equal incoming pointers 
This is a resubmission of bbb29738b58aaf6f6518269abdcf8f64131665a9 that
was reverted due to clang tests failures. It includes the fix and
additional IR tests for the missed case.

Summary:
In case when all incoming values of a PHI are equal pointers, this
transformation inserts a definition of such a pointer right after
definition of the base pointer and replaces with this value both PHI and
all it's incoming pointers. Primary goal of this transformation is
canonicalization of this pattern in order to enable optimizations that
can't handle PHIs. Non-inbounds pointers aren't currently supported.

Reviewers: spatel, RKSimon, lebedev.ri, apilipenko

Reviewed By: apilipenko

Tags: #llvm

Subscribers: hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D68128
2019-11-14 17:04:32 +07:00
benchmarks
bindings Update version number in llvm python bindings 2019-10-25 17:14:11 -04:00
cmake [cmake] Remove confusing condition argument from else() NFC 2019-11-13 16:37:04 -08:00
docs Move CodeGenFileType enum to Support/CodeGen.h 2019-11-13 16:39:34 -08:00
examples Move CodeGenFileType enum to Support/CodeGen.h 2019-11-13 16:39:34 -08:00
include [ThinLTO] Add correctness check for RO/WO variable import 2019-11-14 12:24:05 +03:00
lib [InstCombine] Fold PHIs with equal incoming pointers 2019-11-14 17:04:32 +07:00
projects Add few docs and implementation of strcpy and strcat. 2019-10-04 17:30:54 +00:00
resources
runtimes Adding support for overriding LLVM_ENABLE_RUNTIMES for runtimes builds. 2019-09-24 22:38:18 +00:00
test [InstCombine] Fold PHIs with equal incoming pointers 2019-11-14 17:04:32 +07:00
tools Move CodeGenFileType enum to Support/CodeGen.h 2019-11-13 16:39:34 -08:00
unittests [unittests] Add InitializePasses.h includes 2019-11-13 19:42:58 -08:00
utils [lit] Better/earlier errors for empty runs 2019-11-12 09:11:36 -08:00
.arcconfig
.clang-format
.clang-tidy
.gitattributes Fix the "git modified" issue on the preserve-comments-crlf.s. 2019-09-10 12:17:49 +00:00
.gitignore gitignore: Ignore Qt Creator project configuration files. NFC 2019-06-12 08:28:31 +00:00
CMakeLists.txt [cmake] Prevent building with BUILD_SHARED_LIBS and LLVM_LINK_LLVM_DYLIB 2019-11-13 21:29:31 -08:00
CODE_OWNERS.TXT Update email address in CODE_OWNERS 2019-07-01 16:01:15 +00:00
configure
CREDITS.TXT Update email address. 2019-07-17 07:02:02 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
README.txt Test commit. 2019-10-03 14:57:49 +00:00
RELEASE_TESTERS.TXT

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