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e4f6153167
llvm/lib
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Simon Pilgrim e4f6153167 [SelectionDAG][X86] CombineBT - more aggressively determine demanded bits 
This patch is in 2 parts:

1 - replace combineBT's use of SimplifyDemandedBits (hasOneUse only) with SelectionDAG::GetDemandedBits to more aggressively determine the lower bits used by BT.

2 - update SelectionDAG::GetDemandedBits to support ANY_EXTEND - if the demanded bits are only in the non-extended portion, then peek through and demand from the source value and then ANY_EXTEND that if we found a match.

Differential Revision: https://reviews.llvm.org/D35896

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@309486 91177308-0d34-0410-b5e6-96231b3b80d8
2017-07-29 14:50:25 +00:00
..
Analysis [SCEV] Change an early exit to an assert; NFC 2017-07-29 05:32:47 +00:00
AsmParser Debug Info: Add a file: field to DIImportedEntity. 2017-07-19 00:09:54 +00:00
BinaryFormat Revert "Revert "Revert "Revert "Switch external cvtres.exe for llvm's own resource library."""" 2017-07-08 03:06:10 +00:00
Bitcode ThinLTO Minimized Bitcode File Size Reduction 2017-07-21 17:25:20 +00:00
CodeGen [SelectionDAG][X86] CombineBT - more aggressively determine demanded bits 2017-07-29 14:50:25 +00:00
DebugInfo [PDB] Initialize the std::array<ulittle32_t> used for the gsi bitmap 2017-07-27 23:13:05 +00:00
Demangle
ExecutionEngine RuntimeDyldELF.cpp: Prune unused "TargetRegistry.h" 2017-07-23 11:47:22 +00:00
Fuzzer [libFuzzer] improve support for inline-8bit-counters (make it more correct and faster) 2017-07-28 22:00:56 +00:00
IR Remove the obsolete offset parameter from @llvm.dbg.value 2017-07-28 20:21:02 +00:00
IRReader
LineEditor
Linker [Linker] Add directives to support mixing ARM/Thumb module-level inline asm. 2017-07-12 11:52:28 +00:00
LTO LTO: Export functions referenced by the CFI jump table. 2017-07-19 18:18:19 +00:00
MC MC: add support for cfi_return_column 2017-07-28 03:39:19 +00:00
Object [llvm] Update MachOObjectFile::exports interface 2017-07-29 00:30:45 +00:00
ObjectYAML [yaml2obj][ELF] Add support for program headers 2017-07-19 20:38:46 +00:00
Option [Bash-autocompletion] Show HelpText with possible flags 2017-07-26 13:36:58 +00:00
Passes Refine the PGOOpt and SamplePGOSupport handling. 2017-07-29 04:10:24 +00:00
ProfileData [ProfData] Detect if zlib is available 2017-07-21 21:41:15 +00:00
Support [TargetParser] Use enum classes for various ARM kind enums. 2017-07-27 16:27:56 +00:00
TableGen [BinaryFormat, Option, TableGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-16 00:43:26 +00:00
Target [SelectionDAG][X86] CombineBT - more aggressively determine demanded bits 2017-07-29 14:50:25 +00:00
Testing Mark LLVMTestingSupport as not installed in LLVMBuild. 2017-06-19 22:01:50 +00:00
ToolDrivers llvm: add llvm-dlltool support to the archiver 2017-07-18 21:26:38 +00:00
Transforms [SimplifyCFG] Make the no-jump-tables attribute also disable switch lookup tables 2017-07-28 22:25:40 +00:00
WindowsManifest Unlink nodes instead of copying, to avoid memory problems. 2017-07-26 18:33:21 +00:00
XRay
CMakeLists.txt Move manifest utils into separate lib, to reduce libxml2 deps. 2017-07-26 01:21:55 +00:00
LLVMBuild.txt Move manifest utils into separate lib, to reduce libxml2 deps. 2017-07-26 01:21:55 +00:00