Fix sign extend to long. When coming from sbyte, we used to generate:
movsbl 4(%esp), %eax
movl %eax, %edx
sarl $7, %edx
Now we generate:
movsbl 4(%esp), %eax
movl %eax, %edx
sarl $31, %edx
Which is right.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19515 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index f3b344b..64c686e 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -805,8 +805,8 @@
// The high part is obtained by SRA'ing all but one of the bits of the lo
// part.
- unsigned SrcSize = MVT::getSizeInBits(Node->getOperand(0).getValueType());
- Hi = DAG.getNode(ISD::SRA, NVT, Lo, DAG.getConstant(SrcSize-1, MVT::i8));
+ unsigned LoSize = MVT::getSizeInBits(Lo.getValueType());
+ Hi = DAG.getNode(ISD::SRA, NVT, Lo, DAG.getConstant(LoSize-1, MVT::i8));
break;
}
case ISD::ZERO_EXTEND: