[Hexagon] Replacing old fadd/fsub instructions and updating references.

llvm-svn: 226176
diff --git a/llvm/test/CodeGen/Hexagon/dsub.ll b/llvm/test/CodeGen/Hexagon/dsub.ll
index 4f9d39e..f271492 100644
--- a/llvm/test/CodeGen/Hexagon/dsub.ll
+++ b/llvm/test/CodeGen/Hexagon/dsub.ll
@@ -1,7 +1,7 @@
 ; RUN: llc -march=hexagon -mcpu=hexagonv5  < %s | FileCheck %s
 ; Check that we generate double precision floating point subtract in V5.
 
-; CHECK: r{{[0-9]+}}:{{[0-9]+}} = dfsub(r{{[0-9]+}}:{{[0-9]+}}, r{{[0-9]+}}:{{[0-9]+}})
+; CHECK: call __hexagon_subdf3
 
 define i32 @main() nounwind {
 entry: