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Florian Hahn 2d7227ec3a [GVN] Preserve loop related analysis/canonical forms. 
LoopInfo can be easily preserved by passing it to the functions that
modify the CFG (SplitCriticalEdge and MergeBlockIntoPredecessor.
SplitCriticalEdge also preserves LoopSimplify and LCSSA form when when passing in
LoopInfo. The test case shows that we preserve LoopSimplify and
LoopInfo. Adding addPreservedID(LCSSAID) did not preserve LCSSA for some
reason.

Also I am not sure if it is possible to preserve those in the new pass
manager, as they aren't analysis passes.

Reviewers: reames, hfinkel, davide, jdoerfert

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D65137

llvm-svn: 367332
 		2019-07-30 16:43:39 +00:00
clang [COFF][ARM64] Reorder handling of aarch64 MSVC builtins 2019-07-30 15:32:49 +00:00
clang-tools-extra [clangd] Fix a regression in rL366996. 2019-07-30 14:17:45 +00:00
compiler-rt [builtins][test] XFAIL two SPARC tests 2019-07-30 08:05:14 +00:00
debuginfo-tests Make nrvo-string test more robust. 2019-06-27 20:38:37 +00:00
libclc travis: Add LLVM-8 build 2019-03-27 21:28:31 +00:00
libcxx add more information to benchmark test failures 2019-07-30 15:11:41 +00:00
libcxxabi [runtimes] Don't depend on libpthread on Android 2019-07-22 20:41:03 +00:00
libunwind [runtimes] Don't depend on libpthread on Android 2019-07-22 20:41:03 +00:00
lld Return early. NFC. 2019-07-29 05:24:51 +00:00
lldb [dotest] Remove multiprocessing 2019-07-30 16:42:47 +00:00
llgo IR: Support parsing numeric block ids, and emit them in textual output. 2019-03-22 18:27:13 +00:00
llvm [GVN] Preserve loop related analysis/canonical forms. 2019-07-30 16:43:39 +00:00
openmp [openmp] Workaround bug in old Android pthread_attr_setstacksize 2019-07-25 22:29:55 +00:00
parallel-libs Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
polly [Polly] Clang complains about missing virtual destructor 2019-07-22 15:34:27 +00:00
pstl Revert "[libc++] Integrate the PSTL into libc++" 2019-07-19 18:52:46 +00:00
.arcconfig Update monorepo .arcconfig with new project callsign. 2019-01-31 14:34:59 +00:00
.clang-format Add .clang-tidy and .clang-format files to the toplevel of the 2019-01-29 16:43:16 +00:00
.clang-tidy Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
.gitignore Add a reduced copy of the llvm .gitignore 2019-04-09 00:52:49 +00:00
README.md
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README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.