Sanjay Patel 2d36a55f0e [TargetLowering] add special-case for demanded bits analysis of 'not' ... We treat bitwise 'not' as a special operation and try not to reduce its all-ones mask. Presumably, this is because a 'not' may be cheaper than a generic 'xor' or it may get folded into another logic op if the target has those. However, if we can remove a logic instruction by changing the xor's constant mask value, that should always be a win. Note that the IR version of SimplifyDemandedBits() does not treat 'not' as a special-case currently (although that's marked with a FIXME). So if you run this IR through -instcombine, you should get the same end result. I'm hoping to add a different backend transform that will expose this problem though, so I need to solve this first. Differential Revision: https://reviews.llvm.org/D27356 llvm-svn: 288676		2016-12-05 15:58:21 +00:00
..
Analysis	[InstSimplify] add more helper functions for SimplifyICmpInst; NFCI	2016-12-03 18:03:53 +00:00
AsmParser	[AsmParser] Avoid recursing when lexing ';'. NFC.	2016-11-16 22:25:05 +00:00
Bitcode	Bitcode: The index used by ModuleSummaryIndexBitcodeReader is now required, so make it a reference. NFCI.	2016-12-01 06:21:08 +00:00
CodeGen	[TargetLowering] add special-case for demanded bits analysis of 'not'	2016-12-05 15:58:21 +00:00
DebugInfo	[DebugInfo] Fix some Clang-tidy modernize-use-default and Include What You Use warnings; other minor fixes (NFC).	2016-11-23 23:16:32 +00:00
Demangle	Demangle: remove references to allocator for default allocator	2016-11-20 00:20:27 +00:00
ExecutionEngine	IR: Change the gep_type_iterator API to avoid always exposing the "current" type.	2016-12-02 02:24:42 +00:00
Fuzzer	Resubmit "[LibFuzzer] Split FuzzerUtil for Posix and Windows."	2016-12-02 23:02:01 +00:00
IR	IR: Move NumElements field from {Array,Vector}Type to SequentialType.	2016-12-02 03:20:58 +00:00
IRReader	Timer: Track name and description.	2016-11-18 19:43:18 +00:00
LibDriver
LineEditor
Linker	IR: Move NumElements field from {Array,Vector}Type to SequentialType.	2016-12-02 03:20:58 +00:00
LTO	[LTOs] Allow generation of hotness information	2016-12-02 17:53:56 +00:00
MC	[MC] Generalize MCContext's SectionSymbols field.	2016-12-03 23:55:57 +00:00
Object	[Object][MachO] Reference-ify some helper function arguments. NFC.	2016-12-04 01:56:10 +00:00
ObjectYAML
Option
Passes	[PM] Change the static object whose address is used to uniquely identify	2016-11-23 17:53:26 +00:00
ProfileData	Make the Error class constructor protected	2016-11-11 04:28:40 +00:00
Support	Support escaping in TrigramIndex.	2016-12-02 23:30:16 +00:00
TableGen	TableGen: Some more std::string->StringInit* replacements	2016-12-05 07:35:13 +00:00
Target	[x86] fold fand (fxor X, -1) Y --> fandn X, Y	2016-12-05 15:45:27 +00:00
Transforms	[InstCombine] change select type to eliminate bitcasts	2016-12-03 15:25:16 +00:00
CMakeLists.txt
LLVMBuild.txt