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Sanjay Patel 51ca26e748 [InstCombine] loosen FP 0.0 constraint for fcmp+select substitution 
It looks like we correctly removed edge cases with 0.0 from D50714,
but we were a bit conservative because getBinOpIdentity() doesn't
distinguish between +0.0 and -0.0 and 'nsz' is effectively always
true for fcmp (see discussion in:
https://bugs.llvm.org/show_bug.cgi?id=38086

Without this change, we would get regressions by canonicalizing
to +0.0 in all fcmp, and that's a step towards solving:
https://bugs.llvm.org/show_bug.cgi?id=39475

llvm-svn: 346143
2018-11-05 16:50:44 +00:00
benchmarks Pull google/benchmark library to the LLVM tree 2018-08-28 09:42:41 +00:00
bindings [TI removal] Remove TerminatorInst references from bindings. 2018-10-18 07:40:03 +00:00
cmake [CMake] Expose opt-remark tooling through libOptRemarks.dylib 2018-11-05 11:57:44 +00:00
docs [FPEnv] Add constrained CEIL/FLOOR/ROUND/TRUNC intrinsics 2018-11-05 15:59:49 +00:00
examples [BuildingAJIT] Update the Ch1 KaleidoscopeJIT class to expose errors to clients. 2018-10-18 00:51:38 +00:00
include [FPEnv] Add constrained CEIL/FLOOR/ROUND/TRUNC intrinsics 2018-11-05 15:59:49 +00:00
lib [InstCombine] loosen FP 0.0 constraint for fcmp+select substitution 2018-11-05 16:50:44 +00:00
projects [cmake] Support moving debuginfo-tests to llvm/projects 2017-12-12 17:06:08 +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 Revert "[CMake] Pass Clang defaults to runtimes builds" 2018-07-13 20:01:55 +00:00
test [InstCombine] loosen FP 0.0 constraint for fcmp+select substitution 2018-11-05 16:50:44 +00:00
tools [CMake] Expose opt-remark tooling through libOptRemarks.dylib 2018-11-05 11:57:44 +00:00
unittests [ValueTracking] determine sign of 0.0 from select when matching min/max FP 2018-11-04 14:28:48 +00:00
utils Exclude wasm target from Windows packaging due to PR39448 2018-11-05 09:31:43 +00:00
.arcconfig [llvm] Set up .arcconfig to point to Diffusion L repository 2018-01-12 15:37:41 +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
.gitattributes [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
.gitignore [git/svn] Ignore Visual Studio's CMakeSettings.json. 2018-10-29 14:51:02 +00:00
CMakeLists.txt [CMake] Fix a missing LLVM_ENABLE_IDE from r344555 2018-10-15 22:36:59 +00:00
CODE_OWNERS.TXT Add owner for llvm-objcopy 2018-08-09 22:05:19 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT [NFC] Add periods to CREDITS.txt (testing git-llvm) 2018-10-26 06:57:02 +00:00
LICENSE.TXT Update copyright year to 2018. 2018-06-18 12:22:17 +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. 2018-09-22 01:01:03 +00:00
RELEASE_TESTERS.TXT Remove myself from the release testers list. (NFC) 2018-06-20 21:25:50 +00:00

README.txt 

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.

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.