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Simon Pilgrim 488b40bd2e [X86][SSE] Use PSLLDQ/PSRLDQ to mask out zeroable ends of a shuffle 
As suggested on PR40318, this patch uses PSLLDQ/PSRLDQ to lower shuffles to zero out the ends of a vector, leaving a sequential inner section.

For pre-SSSE3 we do this for shuffles with zeros at either end (requiring up to 3 shifts), but once PSHUFB is available I've limited this to shuffles with a single zeroable end (2 shifts).

Differential Revision: https://reviews.llvm.org/D56784

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@352883 91177308-0d34-0410-b5e6-96231b3b80d8
2019-02-01 16:02:12 +00:00
..
Analysis
Provide reason messages for unviable inlining
2019-02-01 10:44:43 +00:00
AsmParser
Revert "[Sanitizers] UBSan unreachable incompatible with ASan in the presence of noreturn calls"
2019-01-24 18:04:21 +00:00
BinaryFormat
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
Bitcode
Revert "[Sanitizers] UBSan unreachable incompatible with ASan in the presence of noreturn calls"
2019-01-24 18:04:21 +00:00
CodeGen
[TargetLowering] try harder to determine undef elements of vector binops
2019-02-01 15:35:12 +00:00
DebugInfo
[NativePDB] Fix access to both old & new fpo data entries from dbi stream
2019-01-30 10:40:45 +00:00
Demangle
Add missing include (cstdlib) to Demangle.h
2019-01-22 19:18:18 +00:00
ExecutionEngine
Add namespace to some types.
2019-01-31 04:33:11 +00:00
Fuzzer
[libFuzzer] Delete llvm/lib/Fuzzer
2017-10-16 20:48:19 +00:00
FuzzMutate
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
IR
[opaque pointer types] Add a FunctionCallee wrapper type, and use it.
2019-02-01 02:28:03 +00:00
IRReader
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
LineEditor
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
Linker
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
LTO
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MC
[WebAssembly] MC: Fix for outputing wasm object to /dev/null
2019-01-31 22:38:22 +00:00
MCA
[MC][X86] Correctly model additional operand latency caused by transfer delays from the integer to the floating point unit.
2019-01-23 16:35:07 +00:00
Object
[WebAssembly] Add missing SymbolRef update from rL352551
2019-01-30 00:15:48 +00:00
ObjectYAML
[COFF] Add new relocation types.
2019-01-27 19:53:36 +00:00
Option
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
OptRemarks
Update more file headers across all of the LLVM projects in the monorepo
2019-01-19 10:56:40 +00:00
Passes
Default lowering for experimental.widenable.condition
2019-01-31 09:10:17 +00:00
ProfileData
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
Support
Revert r352750.
2019-02-01 10:38:40 +00:00
TableGen
[TblGen] Extend !if semantics through new feature !cond
2019-01-25 10:25:25 +00:00
Target
[X86][SSE] Use PSLLDQ/PSRLDQ to mask out zeroable ends of a shuffle
2019-02-01 16:02:12 +00:00
Testing
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
TextAPI
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
ToolDrivers
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
Transforms
[InstCombine] reduce duplicate code; NFC
2019-02-01 14:37:49 +00:00
WindowsManifest
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
XRay
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
CMakeLists.txt
[llvm-mca] Move llvm-mca library to llvm/lib/MCA.
2018-12-17 08:08:31 +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