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Sanjay Patel f368040c14 [DAGCombiner] try to move splat after binop with splat constant 
binop (splat X), (splat C) --> splat (binop X, C)
binop (splat C), (splat X) --> splat (binop C, X)

We do this in IR, and there's a similar fold for the case with 2
non-constant operands just above the code diff in this patch.

This was discussed in D79718, and the extra shuffle in the test
(llvm/test/CodeGen/X86/vector-fshl-128.ll::sink_splatvar) where it
was noticed disappears because demanded elements analysis is no
longer blocked. The large majority of the test diffs seem to be
benign code scheduling changes, but I do see another type of win:
moving the splat later allows binop narrowing in some cases.

Regressions were avoided on x86 and ARM with the INSERT_VECTOR_ELT
restriction.

Differential Revision: https://reviews.llvm.org/D79886
 		2020-05-26 08:12:46 -04:00
..
Analysis [CostModel] getUserCost for intrinsic throughput 2020-05-26 12:23:37 +01:00
AsmParser AllocaInst should store Align instead of MaybeAlign. 2020-05-16 14:53:16 -07:00
BinaryFormat [MsgPack] Added convenience assignment to MsgPackDocument 2020-05-21 22:13:19 +01:00
Bitcode [BitcodeReader] Simplify code. NFCI. 2020-05-21 16:03:09 +02:00
Bitstream [Bitcode] reserve in front of push_back loops. NFCI. 2020-05-01 15:52:53 +02:00
CodeGen [DAGCombiner] try to move splat after binop with splat constant 2020-05-26 08:12:46 -04:00
DWARFLinker [Clang] Restore replace_path_prefix instead of startswith 2020-05-13 13:49:14 -04:00
DebugInfo [DebugInfo/llvm-objdump] - Print "ZERO terminator" for terminator entries when dumping .eh_frame. 2020-05-26 12:52:42 +03:00
Demangle Give microsoftDemangle() an outparam for how many input bytes were consumed. 2020-05-20 16:17:31 -04:00
ExecutionEngine Fix msvc "switch statement contains 'default' but no 'case' labels" warning. NFC. 2020-05-22 10:49:10 +01:00
Extensions Update compiler extension integration into the build system 2020-04-24 09:40:14 +02:00
Frontend [cmake] LLVMFrontendOpenMP - fix include/llvm/Frontend/OpenMP header path 2020-04-18 12:31:39 +01:00
FuzzMutate FuzzerCLI.h - reduce StringRef.h include to forward declaration. NFC. 2020-05-12 13:03:50 +01:00
Fuzzer
…
IR Make explicit -fno-semantic-interposition (in -fpic mode) infer dso_local 2020-05-25 20:48:18 -07:00
IRReader Infer alignment of unmarked loads in IR/bitcode parsing. 2020-05-14 13:03:50 -07:00
LTO TargetLowering.h - remove unnecessary TargetMachine.h include. NFC 2020-05-23 19:49:38 +01:00
LineEditor
…
Linker [SVE] Add new VectorType subclasses 2020-04-22 08:59:01 -07:00
MC [MCDwarf] Delete unneeded DW_AT_unspecified_parameters 2020-05-24 22:36:57 -07:00
MCA [MCA][InstrBuilder] Correctly mark reserved resources in initializeUsedResources. 2020-05-10 19:25:54 +01:00
Object [Object] Remove unused variable after D79560. NFC. 2020-05-11 13:03:53 +08:00
ObjectYAML [ObjectYAML][DWARF] Make variable names consistent. 2020-05-26 17:45:10 +08:00
Option
…
Passes [Pass Manager] remove EarlyCSE as clean-up for VectorCombine 2020-05-24 12:36:21 -04:00
ProfileData [gcov] Emit GCOV_TAG_OBJECT_SUMMARY/GCOV_TAG_PROGRAM_SUMMARY correctly and fix llvm-cov's decoding of runcount 2020-05-11 21:53:53 -07:00
Remarks RemarkStringTable.h - reduce StringRef/Remark includes to forward declarations. NFC 2020-05-08 12:30:49 +01:00
Support Make FEATURE_AVX512VP2INTERSECT match between compiler-rt and LLVM 2020-05-25 15:18:04 +02:00
TableGen [TableGen] Simplify with TGParser::consume() 2020-04-26 15:26:49 -07:00
Target [CostModel] Unify getCastInstrCost 2020-05-26 11:29:57 +01:00
Testing
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TextAPI [cmake] Add headers in TextAPI/Elf and TextAPI/MachO subdirectories 2020-04-24 18:42:44 +01:00
ToolDrivers [COFF] Use Expected in COFFObjectFile creation 2020-05-08 14:22:28 -07:00
Transforms [Transforms] Check validity of profile reader before invoking it 2020-05-26 20:11:24 +08:00
WindowsManifest Try to fix WindowsManifest CMake logic on Windows 2020-02-28 17:24:03 -08:00
XRay [llvm-xray] consumeError when trying big-endian 2020-05-16 22:44:48 -07:00
CMakeLists.txt Update compiler extension integration into the build system 2020-04-24 09:40:14 +02:00
LLVMBuild.txt Update compiler extension integration into the build system 2020-04-24 09:40:14 +02:00