Use movq to move 64 bits in and out of mmx registers.
Fixes PR4669
llvm-svn: 77940
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 59d3ab5..4db0e02 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -4447,6 +4447,11 @@
DAG.getNode(ISD::BIT_CONVERT, dl, MVT::i32,
Op.getOperand(0))));
+ if (Op.getValueType() == MVT::v1i64 && Op.getOperand(0).getValueType() == MVT::i64)
+ return DAG.getNode(ISD::BIT_CONVERT, dl, MVT::v1i64,
+ DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, MVT::v1i64,
+ Op.getOperand(0)));
+
SDValue AnyExt = DAG.getNode(ISD::ANY_EXTEND, dl, MVT::i32, Op.getOperand(0));
MVT VT = MVT::v2i32;
switch (Op.getValueType().getSimpleVT()) {