forked from OSchip/llvm-project
![]() 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 |
||
---|---|---|
.. | ||
AliasSet | ||
AssumptionCache | ||
BasicAA | ||
BlockFrequencyInfo | ||
BranchProbabilityInfo | ||
CFLAliasAnalysis | ||
CallGraph | ||
ConstantFolding | ||
CostModel | ||
Delinearization | ||
DemandedBits | ||
DependenceAnalysis | ||
DivergenceAnalysis | ||
DominanceFrontier | ||
Dominators | ||
GlobalsModRef | ||
IVUsers | ||
LazyCallGraph | ||
LazyValueAnalysis | ||
Lint | ||
LoopAccessAnalysis | ||
LoopInfo | ||
MemoryDependenceAnalysis | ||
MemorySSA | ||
MustExecute | ||
PhiValues | ||
PostDominators | ||
ProfileSummary | ||
RegionInfo | ||
ScalarEvolution | ||
ScopedNoAliasAA | ||
TypeBasedAliasAnalysis | ||
ValueTracking | ||
alias-analysis-uses.ll |