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Serguei Katkov 66182d6c38 [SimplifyCFG] Re-apply Relax restriction for folding unconditional branches 
The commit rL308422 introduces a restriction for folding unconditional
branches. Specifically if empty block with unconditional branch leads to
header of the loop then elimination of this basic block is prohibited.
However it seems this condition is redundantly strict.
If elimination of this basic block does not introduce more back edges
then we can eliminate this block.

The patch implements this relax of restriction.

The test profile/Linux/counter_promo_nest.c in compiler-rt project
is updated to meet this change.

Reviewers: efriedma, mcrosier, pacxx, hsung, davidxl	
Reviewed By: pacxx
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D42691

llvm-svn: 324572
 		2018-02-08 07:16:29 +00:00
clang [clang-format] Set ObjCBinPackProtocolList to Never for google style 2018-02-08 01:49:10 +00:00
clang-tools-extra [clangd] Do not precent-encode numbers in URI. 2018-02-07 12:12:06 +00:00
compiler-rt Update test counter_promo_nest.c to meet llvm change 2018-02-08 07:15:49 +00:00
debuginfo-tests [debuginfo-tests] Support moving debuginfo-tests to llvm/projects 2017-12-12 16:54:20 +00:00
libclc Add vstore_half_rte implementation 2018-02-06 18:44:50 +00:00
libcxx Implement deduction guide for basic_string as described in P0433 2018-02-08 06:34:03 +00:00
libcxxabi Fix compilation in C++17 mode. 2018-02-07 23:23:23 +00:00
libunwind [cmake] [libunwind] LLVM_FOUND isn't always set, so just test if 2018-01-27 19:31:44 +00:00
lld Symbols defined in linker scripts should not have dso_local flag set in LTO resolutions. 2018-02-08 04:25:52 +00:00
lldb [docs] Update docs for cmake options LLDB_TEST_C_COMPILER and LLDB_TEST_CXX_COMPILER 2018-02-08 05:11:17 +00:00
llgo irgen: Create functions instead of global variables for builtin hash and equal algorithms. 2017-06-04 22:11:28 +00:00
llvm [SimplifyCFG] Re-apply Relax restriction for folding unconditional branches 2018-02-08 07:16:29 +00:00
openmp [OpenMP][libomptarget] Add data sharing support in libomptarget 2018-02-07 18:21:55 +00:00
parallel-libs [Axccel] Remove -Wno-missing-braces in build 2016-12-19 21:34:07 +00:00
polly [ScopBuilder] Make -polly-stmt-granularity=scalar-indep the default. 2018-02-03 06:59:47 +00:00
README.md Add an svn project to contain the files that appear at the root of the 2017-10-19 21:09:49 +00:00

README.md

Low Level Virtual Machine (LLVM)

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