Nikita Popov dd116369f6 [InstSimplify] Fix incorrect poison propagation when folding phi (#96631) ...

We can only replace phi(X, undef) with X, if X is known not to be
poison. Otherwise, the result may be more poisonous on the undef branch.

Fixes https://github.com/llvm/llvm-project/issues/68683.

2024-11-07 14:09:45 +01:00

..

2002-03-28-UninitializedVal.ll

…

2002-05-01-ShouldNotPromoteThisAlloca.ll

…

2003-04-10-DFNotFound.ll

…

2003-04-18-DeadBlockProblem.ll

…

2003-04-24-MultipleIdenticalSuccessors.ll

…

2003-06-26-IterativePromote.ll

…

2003-10-05-DeadPHIInsertion.ll

…

2005-06-30-ReadBeforeWrite.ll

…

2005-11-28-Crash.ll

…

2007-08-27-VolatileLoadsStores.ll

…

alloca_addrspace.ll

…

atomic.ll

…

ConvertDebugInfo2.ll

…

ConvertDebugInfo.ll

…

crash.ll

…

dbg_declare_to_value_conversions.ll

…

dbg-inline-scope-for-phi.ll

…

debug-alloca-phi-2.ll

…

debug-alloca-phi.ll

…

debug-alloca-vla-1.ll

…

debug-alloca-vla-2.ll

…

ignore-droppable.ll

…

ignore-lifetime.ll

…

opaque-ptr.ll

…

optnone.ll

…

pr24179.ll

…

pr37632-unreachable-list-of-stores.ll

…

preserve-nonnull-load-metadata.ll

…

PromoteMemToRegister.ll

…

single-store.ll

…

undef-order.ll

…

UndefValuesMerge.ll

…