Implemented fused branches for long and fp on x86.

Also marked mips fused branches as unimplemented.

Change-Id: I2d845874d73b03dfadcaf5a56d1d315bb1e63763
diff --git a/src/compiler/codegen/mips/Mips32/Gen.cc b/src/compiler/codegen/mips/Mips32/Gen.cc
index 7712985..c304836 100644
--- a/src/compiler/codegen/mips/Mips32/Gen.cc
+++ b/src/compiler/codegen/mips/Mips32/Gen.cc
@@ -517,4 +517,9 @@
 #endif
 }
 
+void genFusedLongCmpBranch(CompilationUnit* cUnit, BasicBlock* bb, MIR* mir)
+{
+  UNIMPLEMENTED(FATAL) << "Need codegen for fused long cmp branch";
+}
+
 }  // namespace art