Index: lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
===================================================================
--- lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -208,6 +208,9 @@
     Val = DAG.getNode(ISD::TRUNCATE, DL, PartEVT, Val);
   }
 
+  if (PartEVT.getSizeInBits() == ValueVT.getSizeInBits())
+    return DAG.getNode(ISD::BITCAST, DL, ValueVT, Val);
+
   if (PartEVT.isInteger() && ValueVT.isInteger()) {
     if (ValueVT.bitsLT(PartEVT)) {
       // For a truncate, see if we have any information to
@@ -231,9 +234,6 @@
     return DAG.getNode(ISD::FP_EXTEND, DL, ValueVT, Val);
   }
 
-  if (PartEVT.getSizeInBits() == ValueVT.getSizeInBits())
-    return DAG.getNode(ISD::BITCAST, DL, ValueVT, Val);
-
   llvm_unreachable("Unknown mismatch!");
 }
 
Index: test/CodeGen/AMDGPU/inline-asm.ll
===================================================================
--- test/CodeGen/AMDGPU/inline-asm.ll
+++ test/CodeGen/AMDGPU/inline-asm.ll
@@ -39,3 +39,15 @@
 endif:
   ret void
 }
+
+; CHECK: {{^}}v_cmp_asm:
+; CHECK: v_mov_b32_e32 [[SRC:v[0-9]+]], s{{[0-9]+}}
+; CHECK: v_cmp_ne_i32_e64 s{{\[}}[[MASK_LO:[0-9]+]]:[[MASK_HI:[0-9]+]]{{\]}}, 0, [[SRC]]
+; CHECK-DAG: v_mov_b32_e32 v[[V_LO:[0-9]+]], s[[MASK_LO]]
+; CHECK-DAG: v_mov_b32_e32 v[[V_HI:[0-9]+]], s[[MASK_HI]]
+; CHECK: buffer_store_dwordx2 v{{\[}}[[V_LO]]:[[V_HI]]{{\]}}
+define void @v_cmp_asm(i64 addrspace(1)* %out, i32 %in) {
+  %sgpr = tail call i64 asm "v_cmp_ne_i32_e64 $0, 0, $1", "=s,v"(i32 %in)
+  store i64 %sgpr, i64 addrspace(1)* %out
+  ret void
+}