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Changpeng Fang 391bcf8893 AMDGPU/SI: Handle infinite loop for the structurizer to work with CFG with infinite loops. 
Summary:
  The current StructurizeCFG pass only works for CFG with one exit. AMDGPUUnifyDivergentExitNodes combines multiple "return" blocks and/or "unreachable" blocks
to one exit block for the Structurizer to work. However, infinite loop is another kind of special "exit", and if we don't handle it, the case of multiple exits will prevent the structurizer from working.

In this work, for each infinite loop, we add a dummy edge to the "return" block, and thus the AMDGPUUnifyDivergentExitNodes pass will work with infinite loops.
This will make CFG with infinite loops be structurized.

Reviewer:
  nhaehnle

Differential Revision:
  https://reviews.llvm.org/D46340

llvm-svn: 332625
 		2018-05-17 16:45:01 +00:00
clang [CUDA] Allow "extern __shared__ Foo foo[]" within anon. namespaces. 2018-05-17 16:15:07 +00:00
clang-tools-extra Disable a failing clang-move test on windows. 2018-05-17 16:13:36 +00:00
compiler-rt [libFuzzer] rename a test from .c to .cpp 2018-05-16 23:38:53 +00:00
debuginfo-tests [Darwin] Specify DWARF 2/4 when running apple accelerator tests. 2018-02-26 20:56:45 +00:00
libclc rootn: Use denormal path only 2018-05-15 04:22:43 +00:00
libcxx [libcxx] [test] Remove unused local typedef in test/std/numerics/rand/rand.eng/rand.eng.lcong/default.pass.cpp 2018-05-17 04:59:34 +00:00
libcxxabi Fix test failure for missing _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 2018-05-03 12:44:27 +00:00
libunwind [OR1K] Add the EPCR special-purpose register to register state. 2018-05-16 19:09:48 +00:00
lld [COFF] Add /Brepro and /TIMESTAMP options. 2018-05-17 15:11:01 +00:00
lldb FileSpec objects that resolve to "." should have "." in m_filename and m_directory empty. 2018-05-17 16:12:38 +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 AMDGPU/SI: Handle infinite loop for the structurizer to work with CFG with infinite loops. 2018-05-17 16:45:01 +00:00
openmp [libomptarget-nvptx-bc] Pass found CUDA installations 2018-05-16 17:20:27 +00:00
parallel-libs [Axccel] Remove -Wno-missing-braces in build 2016-12-19 21:34:07 +00:00
polly [DeLICM] Avoid assertion on out-of-quota. 2018-05-16 16:39:51 +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.