David Majnemer dfe81adbce InstCombine: Don't miscompile (x lshr C1) udiv C2 ...

We have a transform that changes:
  (x lshr C1) udiv C2
into:
  x udiv (C2 << C1)

However, it is unsafe to do so if C2 << C1 discards any of C2's bits.

This fixes PR21255.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219634 91177308-0d34-0410-b5e6-96231b3b80d8

2014-10-13 21:48:30 +00:00

..

APFloat.h

[ADT] Add an (ADL-friendly) abs free function for APFloat that returns

2014-10-10 08:27:22 +00:00

APInt.h

InstCombine: Don't miscompile (x lshr C1) udiv C2

2014-10-13 21:48:30 +00:00

APSInt.h

APSInt: Simplify code to reduce the number of copies. No functionality change.

2014-10-12 15:36:31 +00:00

ArrayRef.h

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BitVector.h

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DAGDeltaAlgorithm.h

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DeltaAlgorithm.h

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DenseMap.h

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DenseMapInfo.h

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DenseSet.h

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DepthFirstIterator.h

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edit_distance.h

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EquivalenceClasses.h

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FoldingSet.h

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GraphTraits.h

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Hashing.h

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ilist_node.h

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ilist.h

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ImmutableList.h

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ImmutableMap.h

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ImmutableSet.h

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IndexedMap.h

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IntEqClasses.h

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IntervalMap.h

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IntrusiveRefCntPtr.h

[ADT/IntrusiveRefCntPtr] Give friend access to IntrusiveRefCntPtr<X> so the relevant move constructor can access 'Obj'.

2014-09-23 06:06:43 +00:00

iterator_range.h

Reformat some stuff I missed in recent previous commits

2014-10-08 23:09:42 +00:00

iterator.h

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MapVector.h

Add size_t MapVector::erase(KeyT) similar to the one in std::map.

2014-10-07 21:15:51 +00:00

None.h

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Optional.h

Add an emplace(...) method to llvm::Optional<T>.

2014-10-01 02:12:35 +00:00

PackedVector.h

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PointerIntPair.h

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PointerUnion.h

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PostOrderIterator.h

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PriorityQueue.h

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SCCIterator.h

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ScopedHashTable.h

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SetOperations.h

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SetVector.h

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SmallBitVector.h

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SmallPtrSet.h

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SmallSet.h

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SmallString.h

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SmallVector.h

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SparseBitVector.h

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SparseMultiSet.h

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SparseSet.h

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Statistic.h

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STLExtras.h

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StringExtras.h

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StringMap.h

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StringRef.h

Solve Visual C++ warning C4805 on getAsInteger<bool>.

2014-10-04 19:58:30 +00:00

StringSet.h

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StringSwitch.h

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TinyPtrVector.h

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Triple.h

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Twine.h

Fix typo in comment

2014-10-03 11:55:31 +00:00

UniqueVector.h

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VariadicFunction.h

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