PR14896: Handle memcpy from constant string where the memcpy size is larger than the string size.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172124 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 6c29c67..344d144 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -3374,10 +3374,11 @@
}
assert(!VT.isVector() && "Can't handle vector type here!");
- unsigned NumVTBytes = VT.getSizeInBits() / 8;
+ unsigned NumVTBits = VT.getSizeInBits();
+ unsigned NumVTBytes = NumVTBits / 8;
unsigned NumBytes = std::min(NumVTBytes, unsigned(Str.size()));
- APInt Val(NumBytes*8, 0);
+ APInt Val(NumVTBits, 0);
if (TLI.isLittleEndian()) {
for (unsigned i = 0; i != NumBytes; ++i)
Val |= (uint64_t)(unsigned char)Str[i] << i*8;