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Zvi Rackover 7569436f81 [DAGCombine] A shuffle of a splat is always the splat itself 
Summary:
Add a simplification:
shuffle (splat-shuffle), undef, M --> splat-shuffle

Fixes pr32449

Patch by Sanjay Patel

Reviewers: eli.friedman, RKSimon, spatel

Reviewed By: spatel

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D31426

llvm-svn: 299047
 		2017-03-30 01:42:57 +00:00
..
Analysis Revert "[ScalarEvolution] Re-enable Predicate implication from operations" 2017-03-24 07:04:31 +00:00
Assembler [IR] Add AllowContract to FastMathFlags 2017-03-28 20:11:52 +00:00
Bindings
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Bitcode [IR] Add AllowContract to FastMathFlags 2017-03-28 20:11:52 +00:00
BugPoint [IR/Verifier] List the CU we weren't able to find in `llvm.dbg.cu`. 2017-02-20 22:51:42 +00:00
CodeGen [DAGCombine] A shuffle of a splat is always the splat itself 2017-03-30 01:42:57 +00:00
DebugInfo If the DIUnit has flags passed on it then have DW_AT_producer be a combination of DICompileUnit::Producer and Flags. 2017-03-29 23:34:27 +00:00
Examples
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ExecutionEngine
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Feature Disable gvn-hoist (PR32153) 2017-03-06 21:10:40 +00:00
FileCheck [FileCheck] Added --enable-var-scope option to enable scope for regex variables. 2017-03-09 17:59:04 +00:00
Instrumentation Revert "[asan] Delay creation of asan ctor." 2017-03-27 23:11:50 +00:00
Integer
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JitListener
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LTO Perform symbol binding for .symver versioned symbols 2017-03-09 00:19:49 +00:00
LibDriver
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Linker [Linker] Provide callback for internalization 2017-03-13 18:08:11 +00:00
MC Revert "Dont emit Mapping symbols for sections that contain only data." 2017-03-28 17:15:11 +00:00
Object Add ifunc support to ModuleSymbolTable. 2017-03-29 19:26:26 +00:00
ObjectYAML [ObjectYAML] Fix issue with DWARF2 AddrSize 8 2017-03-07 21:34:35 +00:00
Other Bring back r297624. 2017-03-13 20:00:25 +00:00
SymbolRewriter
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TableGen [tablegen][globalisel] Capture instructions into locals and related infrastructure for multiple instructions matches. 2017-03-20 15:20:42 +00:00
ThinLTO/X86 Add support for -fno-builtin to LTO and ThinLTO to libLTO 2017-03-28 18:55:44 +00:00
Transforms [InstCombine] Correct the check for vector GEPs 2017-03-29 18:23:08 +00:00
Unit
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Verifier [DebugInfo] Emit address space with DW_AT_address_class attribute for pointer and reference types 2017-03-08 23:55:44 +00:00
YAMLParser
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tools [codeview] Fix buggy BeginIndexMapSize assertion 2017-03-29 22:51:22 +00:00
.clang-format
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CMakeLists.txt
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TestRunner.sh
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lit.cfg
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lit.site.cfg.in
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