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936f8760c1
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Huihui Zhang 936f8760c1 [NFC][InstCombine] Add tests for shifty implementation of clamping. 
Summary:
Clamp negative to zero and clamp positive to allOnes are common
operation in image saturation.

Add tests for shifty implementation of clamping, as prepare work for
folding:

and(ashr(subNSW(Y, X), ScalarSizeInBits(Y)-1), X) --> X s> 0 ? X : 0;

or(ashr(subNSW(Y, X), ScalarSizeInBits(Y)-1), X) --> X s> Y ? allOnes : X.

Reviewers: lebedev.ri, efriedma, spatel, kparzysz, bcahoon

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D67798

llvm-svn: 372671
2019-09-23 23:48:32 +00:00
benchmarks
bindings Remove the obsolete BlockByRefStruct flag from LLVM IR 2019-09-18 22:38:56 +00:00
cmake [llvm] [cmake] Add possibility to use ChooseMSVCCRT.cmake when include LLVM library 2019-09-23 14:11:48 +00:00
docs Revert "Reland "[utils] Implement the llvm-locstats tool"" 2019-09-23 11:04:11 +00:00
examples [Orc] Roll back ThreadPool to std::function 2019-09-13 11:59:51 +00:00
include [IR] Add getExtendedType() to IntegerType and Type (dispatching to IntegerType or VectorType) 2019-09-23 18:21:33 +00:00
lib HotColdSplitting: invalidate the AssumptionCache on split 2019-09-23 22:23:01 +00:00
projects [libc++] Take 2: Integrate the PSTL into libc++ 2019-08-05 18:29:14 +00:00
resources
runtimes Revert "Adding support for overriding LLVM_ENABLE_RUNTIMES for runtimes builds." 2019-09-11 00:43:35 +00:00
test [NFC][InstCombine] Add tests for shifty implementation of clamping. 2019-09-23 23:48:32 +00:00
tools [llvm-lipo] Add support for archives 2019-09-23 22:22:55 +00:00
unittests [TextAPI] Add New Supported Platforms 2019-09-23 15:28:02 +00:00
utils [TableGen] Emit OperandType enums for RegisterOperands/RegisterClasses 2019-09-23 18:51:00 +00:00
.arcconfig
.clang-format
.clang-tidy Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
.gitattributes Fix the "git modified" issue on the preserve-comments-crlf.s. 2019-09-10 12:17:49 +00:00
.gitignore gitignore: Ignore Qt Creator project configuration files. NFC 2019-06-12 08:28:31 +00:00
CMakeLists.txt Revert "Reland "[utils] Implement the llvm-locstats tool"" 2019-09-23 11:04:11 +00:00
CODE_OWNERS.TXT Update email address in CODE_OWNERS 2019-07-01 16:01:15 +00:00
configure
CREDITS.TXT Update email address. 2019-07-17 07:02:02 +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

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