Manoj Gupta 647946fa14 llvm: Add support for "-fno-delete-null-pointer-checks" ... Summary: Support for this option is needed for building Linux kernel. This is a very frequently requested feature by kernel developers. More details : https://lkml.org/lkml/2018/4/4/601 GCC option description for -fdelete-null-pointer-checks: This Assume that programs cannot safely dereference null pointers, and that no code or data element resides at address zero. -fno-delete-null-pointer-checks is the inverse of this implying that null pointer dereferencing is not undefined. This feature is implemented in LLVM IR in this CL as the function attribute "null-pointer-is-valid"="true" in IR (Under review at D47894). The CL updates several passes that assumed null pointer dereferencing is undefined to not optimize when the "null-pointer-is-valid"="true" attribute is present. Reviewers: t.p.northover, efriedma, jyknight, chandlerc, rnk, srhines, void, george.burgess.iv Reviewed By: efriedma, george.burgess.iv Subscribers: eraman, haicheng, george.burgess.iv, drinkcat, theraven, reames, sanjoy, xbolva00, llvm-commits Differential Revision: https://reviews.llvm.org/D47895 llvm-svn: 336613		2018-07-09 22:27:23 +00:00
..
AsmWriter.cpp	[IR] Fix inconsistent declaration parameter name	2018-07-06 19:26:00 +00:00
AttributeImpl.h	Remove \brief commands from doxygen comments.	2018-05-01 15:54:18 +00:00
Attributes.cpp	[ADT] Make escaping fn conform to coding guidelines	2018-05-31 17:01:42 +00:00
AttributesCompatFunc.td
AutoUpgrade.cpp	[X86] Remove FMA4 scalar intrinsics. Use llvm.fma intrinsic instead.	2018-07-06 07:14:41 +00:00
BasicBlock.cpp	Rename skipDebugInfo -> skipDebugIntrinsics, NFC	2018-06-26 21:16:59 +00:00
CMakeLists.txt	Reappl "[Dominators] Add the DomTreeUpdater class"	2018-07-03 02:06:23 +00:00
Comdat.cpp	[LLVM-C] [bindings/go] Add C and Golang bindings for COMDAT	2018-03-14 18:33:53 +00:00
ConstantFold.cpp	llvm: Add support for "-fno-delete-null-pointer-checks"	2018-07-09 22:27:23 +00:00
ConstantFold.h
ConstantRange.cpp	[IR] Strip trailing whitespace. NFC	2018-07-03 12:39:52 +00:00
Constants.cpp	[Constants] extend getBinOpIdentity(); NFC	2018-07-06 15:18:58 +00:00
ConstantsContext.h	Rename DEBUG macro to LLVM_DEBUG.	2018-05-14 12:53:11 +00:00
Core.cpp	[LLVM-C] Improve Bindings For Aliases	2018-05-20 23:49:08 +00:00
DataLayout.cpp	Use uniform mechanism for OOM errors handling	2018-06-09 05:19:45 +00:00
DebugInfo.cpp	[IR] Strip trailing whitespace. NFC	2018-07-03 12:39:52 +00:00
DebugInfoMetadata.cpp	Fix DIExpression::ExprOperand::appendToVector	2018-07-06 21:06:21 +00:00
DebugLoc.cpp	IWYU for llvm-config.h in llvm, additions.	2018-04-30 14:59:11 +00:00
DiagnosticHandler.cpp	Remove \brief commands from doxygen comments.	2018-05-01 15:54:18 +00:00
DiagnosticInfo.cpp	This change add's optimization remark in LoopVersioning LICM pass.	2018-01-23 09:47:28 +00:00
DiagnosticPrinter.cpp
DIBuilder.cpp	[DebugInfo] Refactoring DIType::setFlags to DIType::cloneWithFlags, NFC	2018-06-01 23:15:09 +00:00
Dominators.cpp	Remove \brief commands from doxygen comments.	2018-05-01 15:54:18 +00:00
DomTreeUpdater.cpp	Reappl "[Dominators] Add the DomTreeUpdater class"	2018-07-03 02:06:23 +00:00
Function.cpp	llvm: Add support for "-fno-delete-null-pointer-checks"	2018-07-09 22:27:23 +00:00
Globals.cpp	Sink Analysis/ObjectUtil(canBeOmittedFromSymbolTable) into IR so it can be legitimately be used by Object/IRSymtab	2018-03-21 19:23:45 +00:00
GVMaterializer.cpp
InlineAsm.cpp
Instruction.cpp	[IR] Introduce helpers to skip debug instructions (NFC)	2018-06-19 23:42:17 +00:00
Instructions.cpp	Improve ConvertDebugDeclareToDebugValue	2018-06-26 06:17:00 +00:00
IntrinsicInst.cpp	[DebugInfo] Fix PR37395.	2018-07-03 07:56:04 +00:00
IRBuilder.cpp	[IR] Strip trailing whitespace. NFC	2018-07-03 12:39:52 +00:00
IRPrintingPasses.cpp	[Debugify] Add -debugify-each for testing each pass in a pipeline	2018-05-15 00:29:27 +00:00
LegacyPassManager.cpp	[IR] Strip trailing whitespace. NFC	2018-07-03 12:39:52 +00:00
LLVMBuild.txt
LLVMContext.cpp	allow custom OptBisect classes set to LLVMContext	2018-04-05 10:29:37 +00:00
LLVMContextImpl.cpp	[LLVMContext] Detecting leaked instructions with metadata	2018-06-29 20:13:13 +00:00
LLVMContextImpl.h	Extend the GlobalObject metadata interface	2018-05-31 13:29:58 +00:00
Mangler.cpp	[IR] Avoid the need to prefix MS C++ symbols with '\01'	2018-03-16 20:13:32 +00:00
MDBuilder.cpp	Remove \brief commands from doxygen comments.	2018-05-01 15:54:18 +00:00
Metadata.cpp	Extend the GlobalObject metadata interface	2018-05-31 13:29:58 +00:00
MetadataImpl.h
Module.cpp	Add remarks describing when a pass changes the IR instruction count of a module	2018-05-18 17:26:39 +00:00
ModuleSummaryIndex.cpp	[ThinLTO] Add GraphTraits for FunctionSummaries	2018-02-19 15:14:50 +00:00
Operator.cpp	Adding a width of the GEP index to the Data Layout.	2018-02-14 06:58:08 +00:00
OptBisect.cpp	[NFC] OptPassGate extracted from OptBisect	2018-03-27 16:57:20 +00:00
Pass.cpp	Rename DEBUG macro to LLVM_DEBUG.	2018-05-14 12:53:11 +00:00
PassManager.cpp
PassRegistry.cpp
ProfileSummary.cpp	[ProfileSummary] Move a vector we're about to destroy anyway; NFC	2018-04-12 20:54:05 +00:00
SafepointIRVerifier.cpp	SafepointIRVerifier should ignore dead blocks and dead edges	2018-06-25 13:51:11 +00:00
Statepoint.cpp
SymbolTableListTraitsImpl.h
Type.cpp	[IR] Strip trailing whitespace. NFC	2018-07-03 12:39:52 +00:00
TypeFinder.cpp	Use ranged for loops in TypeFinder.cpp, NFC	2018-02-08 18:02:27 +00:00
Use.cpp
User.cpp	Remove redundant includes from lib/IR.	2017-12-13 21:30:52 +00:00
Value.cpp	Implement strip.invariant.group	2018-07-02 04:49:30 +00:00
ValueSymbolTable.cpp	Rename DEBUG macro to LLVM_DEBUG.	2018-05-14 12:53:11 +00:00
Verifier.cpp	Use Type::isIntOrPtrTy where possible, NFC	2018-07-06 20:17:42 +00:00