diff options
Diffstat (limited to 'llvm/lib/Analysis/ValueTracking.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ValueTracking.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp index 4be171e..8940c2c 100644 --- a/llvm/lib/Analysis/ValueTracking.cpp +++ b/llvm/lib/Analysis/ValueTracking.cpp @@ -261,6 +261,13 @@ bool llvm::haveNoCommonBitsSet(const Value *LHS, const Value *RHS, return KnownBits::haveNoCommonBitsSet(LHSKnown, RHSKnown); } +bool llvm::isOnlyUsedInZeroComparison(const Instruction *I) { + return !I->user_empty() && all_of(I->users(), [](const User *U) { + ICmpInst::Predicate P; + return match(U, m_ICmp(P, m_Value(), m_Zero())); + }); +} + bool llvm::isOnlyUsedInZeroEqualityComparison(const Instruction *I) { return !I->user_empty() && all_of(I->users(), [](const User *U) { ICmpInst::Predicate P; |