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progress making the world safe to ConstantDataVector. While

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we're at it, allow PatternMatch's "neg" pattern to match integer
vector negations, and enhance ComputeNumSigned bits to handle
shl of vectors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149082 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2012-01-26 21:37:55 +00:00
parent 5b676ce793
commit 6b0dc92043
4 changed files with 93 additions and 64 deletions
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5
lib/CodeGen/MachineFunction.cpp
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@ -655,9 +655,12 @@ static bool CanShareConstantPoolEntry(const Constant *A, const Constant *B,
if (A->getType() == B->getType()) return false;
// For now, only support constants with the same size.
if (TD->getTypeStoreSize(A->getType()) != TD->getTypeStoreSize(B->getType()))
uint64_t StoreSize = TD->getTypeStoreSize(A->getType());
if (StoreSize != TD->getTypeStoreSize(B->getType()) ||
StoreSize > 128)
return false;
// If a floating-point value and an integer value have the same encoding,
// they can share a constant-pool entry.
if (const ConstantFP *AFP = dyn_cast<ConstantFP>(A))