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Matt Arsenault 772deb9cd5 InstCombine: Fix assert when reassociating fsub with undef 
There is logic to track the expected number of instructions
produced. It thought in this case an instruction would
be necessary to negate the result, but here it folded
into a ConstantExpr fneg when the non-undef value operand
was cancelled out by the second fsub.

I'm not sure why we don't fold constant FP ops with undef currently,
but I think that would also avoid this problem.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301199 91177308-0d34-0410-b5e6-96231b3b80d8
2017-04-24 17:24:37 +00:00
bindings [go bindings] Rmove duplicated conversion function definitions after r300843. 2017-04-20 19:06:11 +00:00
cmake [LLVM][MIPS] Fix different definition of off_t in LLDB and LLVM. 2017-04-24 10:36:46 +00:00
docs Update documentation for the NetBSD target 2017-04-22 16:11:23 +00:00
examples Module::getOrInsertFunction is using C-style vararg instead of variadic templates. 2017-04-11 15:01:18 +00:00
include [APInt] Add ashrInPlace method and rewrite ashr to make a copy and then call ashrInPlace. 2017-04-24 17:18:47 +00:00
lib InstCombine: Fix assert when reassociating fsub with undef 2017-04-24 17:24:37 +00:00
projects [cmake] Include openmp with add_llvm_external_project 2017-03-07 18:54:17 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
runtimes [CMake][runtimes] Use -nodefaultlibs for the runtimes build 2017-04-13 21:29:03 +00:00
test InstCombine: Fix assert when reassociating fsub with undef 2017-04-24 17:24:37 +00:00
tools [DWARF] - Take relocations in account when extracting ranges from .debug_ranges 2017-04-24 10:19:45 +00:00
unittests [APInt] Add ashrInPlace method and rewrite ashr to make a copy and then call ashrInPlace. 2017-04-24 17:18:47 +00:00
utils [globalisel][tablegen] Add support for RegisterOperand. 2017-04-22 15:53:21 +00:00
.arcconfig project_id is from another era in phabricator land and does not provide any value. 2016-09-27 15:47:29 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitignore gitignore: Ignore .vs folder (VS2017 config files) 2017-04-08 00:16:58 +00:00
CMakeLists.txt Allow suppressing host and target info in VersionPrinter 2017-04-19 00:03:36 +00:00
CODE_OWNERS.TXT CODE_OWNERS: Take code ownership of instruction scheduling. 2017-03-10 18:34:37 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT CODE_OWNERS: Take code ownership of instruction scheduling. 2017-03-10 18:34:37 +00:00
LICENSE.TXT Bump year to 2017 in LICENSE.txt 2017-01-12 18:02:42 +00:00
llvm.spec.in [Sparc] Implement i64 load/store support for 32-bit sparc. 2015-08-10 19:11:39 +00:00
LLVMBuild.txt Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
README.txt Test commit. Added a blank line. 2017-03-06 20:45:33 +00:00
RELEASE_TESTERS.TXT Update the release tester for MIPS. NFC. 2017-01-17 11:00:28 +00:00

README.txt 

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.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

If you are writing a package for LLVM, see docs/Packaging.rst for our
suggestions.