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authorChris Lattner <sabre@nondot.org>2012-01-26 21:37:55 +0000
committerChris Lattner <sabre@nondot.org>2012-01-26 21:37:55 +0000
commit6b0dc92043ab1f63d78b8796098575e1d777b701 (patch)
tree2ff62b3e597697a2569a0f9940de2f12c32a7168 /lib/CodeGen
parent5b676ce7932cf60d4fd6d101323d8d54b8395804 (diff)
downloadexternal_llvm-6b0dc92043ab1f63d78b8796098575e1d777b701.zip
external_llvm-6b0dc92043ab1f63d78b8796098575e1d777b701.tar.gz
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progress making the world safe to ConstantDataVector. While
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
Diffstat (limited to 'lib/CodeGen')
-rw-r--r--lib/CodeGen/MachineFunction.cpp5
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp
index 6bfd970..a720467 100644
--- a/lib/CodeGen/MachineFunction.cpp
+++ b/lib/CodeGen/MachineFunction.cpp
@@ -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))