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Heejin Ahn a41250c7be [WebAssembly] Irreducible control flow rewrite 
Summary:
Rewrite WebAssemblyFixIrreducibleControlFlow to a simpler and cleaner
design, which directly computes reachability and other properties
itself. This avoids previous complexity and bugs. (The new graph
analyses are very similar to how the Relooper algorithm would find loop
entries and so forth.)

This fixes a few bugs, including where we had a false positive and
thought fannkuch was irreducible when it was not, which made us much
larger and slower there, and a reverse bug where we missed
irreducibility. On fannkuch, we used to be 44% slower than asm2wasm and
are now 4% faster.

Reviewers: aheejin

Subscribers: jdoerfert, mgrang, dschuff, sbc100, jgravelle-google, sunfish, llvm-commits

Differential Revision: https://reviews.llvm.org/D58919

Patch by Alon Zakai (kripken)

llvm-svn: 356313
 		2019-03-16 03:00:19 +00:00
clang [analyzer] Teach scan-build to find clang when installed in /usr/local/bin/ 2019-03-16 01:01:29 +00:00
clang-tools-extra [clangd] Remove includes of "gmock-matchers.h". NFC 2019-03-15 14:30:07 +00:00
compiler-rt [TSan][libdispatch] Configure libdispatch lit tests 2019-03-16 02:07:50 +00:00
debuginfo-tests Set config.lit_tools_dir, which is needed by lit.llvm.initialize. 2018-11-06 21:54:27 +00:00
libclc sincos: Simplify declaration headers. 2019-03-13 07:13:34 +00:00
libcxx Update a deque test with more assertions. NFC 2019-03-15 15:00:41 +00:00
libcxxabi Revert "[runtimes] Move libunwind, libc++abi and libc++ to lib/ and include/" 2019-03-08 20:33:55 +00:00
libunwind Revert "[runtimes] Move libunwind, libc++abi and libc++ to lib/ and include/" 2019-03-08 20:33:55 +00:00
lld [WebAssembly] Error on R_WASM_MEMORY_ADDR relocations against undefined data symbols. 2019-03-16 01:18:12 +00:00
lldb Abbreviation declarations are required to have non-null tags. 2019-03-15 18:00:43 +00:00
llgo Adjust documentation for git migration. 2019-01-29 16:37:27 +00:00
llvm [WebAssembly] Irreducible control flow rewrite 2019-03-16 03:00:19 +00:00
openmp [OpenMP] Fix OMPT cancellation test for GOMP 2019-03-15 21:24:45 +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 [opaque pointer types] Update calls to CreateCall to pass the function 2019-02-08 19:30:46 +00:00
pstl [pstl] By default, disable the parallel policies 2019-03-14 19:33:58 +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
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.