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Sanjay Patel d6967bf53e [InstCombine] reduce checks for power-of-2-or-zero using ctpop 
This follows up the transform from rL363956 to use the ctpop intrinsic when checking for power-of-2-or-zero.

This is matching the isPowerOf2() patterns used in PR42314:
https://bugs.llvm.org/show_bug.cgi?id=42314

But there's at least 1 instcombine follow-up needed to match the alternate form:

(v & (v - 1)) == 0;

We should have all of the backend expansions handled with:
rL364319
(x86-specific changes still needed for optimal code based on subtarget)

And the larger patterns to exclude zero as a power-of-2 are joining with this change after:
rL364153 ( D63660 )
rL364246

Differential Revision: https://reviews.llvm.org/D63777

llvm-svn: 364341
2019-06-25 18:51:44 +00:00
benchmarks Pull google/benchmark library to the LLVM tree 2018-08-28 09:42:41 +00:00
bindings [bindings/go] Add debug information accessors 2019-06-24 16:23:17 +00:00
cmake Add llvm-symbolizer to LLVM_TOOLCHAIN_TOOLS (PR40152) 2019-06-25 07:15:41 +00:00
docs [ARM] Support inline assembler constraints for MVE. 2019-06-25 16:49:32 +00:00
examples Add a HowToUseLLJIT example project. 2019-05-22 21:38:41 +00:00
include [Peephole] Allow folding loads into instructions w/multiple uses (such as test64rr) 2019-06-25 17:29:18 +00:00
lib [InstCombine] reduce checks for power-of-2-or-zero using ctpop 2019-06-25 18:51:44 +00:00
projects Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
resources
runtimes Setup testing target dependencies for default runtimes 2019-06-11 00:25:57 +00:00
test [InstCombine] reduce checks for power-of-2-or-zero using ctpop 2019-06-25 18:51:44 +00:00
tools [llvm-objcopy][llvm-strip] Fix help text typo for --allow-broken-links 2019-06-25 13:14:18 +00:00
unittests GlobalISel: Remove unsigned variant of SrcOp 2019-06-24 16:16:12 +00:00
utils [PowerPC][UpdateTestChecks] powerpc- triple support 2019-06-24 18:00:34 +00:00
.arcconfig [llvm] Set up .arcconfig to point to Diffusion L repository 2018-01-12 15:37:41 +00:00
.clang-format
.clang-tidy Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
.gitattributes [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
.gitignore gitignore: Ignore Qt Creator project configuration files. NFC 2019-06-12 08:28:31 +00:00
CMakeLists.txt build: extract LLVM distribution target handling 2019-06-14 18:28:57 +00:00
CODE_OWNERS.TXT [llvm-mca] Move llvm-mca library to llvm/lib/MCA. 2018-12-17 08:08:31 +00:00
configure
CREDITS.TXT [test commit] Add my name to the CREDITS.TXT 2019-05-27 07:48:28 +00:00
LICENSE.TXT Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
llvm.spec.in Update structured references to the license to the new license. 2019-01-19 11:30:51 +00:00
LLVMBuild.txt Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
README.txt Testing commit access 2019-02-19 20:38:51 +00:00
RELEASE_TESTERS.TXT Update the list of platforms & archs 2018-12-16 14:47:16 +00:00

README.txt 

The LLVM Compiler Infrastructure
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