Move fused cmp branch ccode to MIR::meta.

This a small refactoring towards removing the large
DecodedInstruction from the MIR class.

Change-Id: I10f9ed5eaac42511d864c71d20a8ff6360292cec
diff --git a/compiler/dex/quick/arm/fp_arm.cc b/compiler/dex/quick/arm/fp_arm.cc
index 1a9d9c5..46542e1 100644
--- a/compiler/dex/quick/arm/fp_arm.cc
+++ b/compiler/dex/quick/arm/fp_arm.cc
@@ -209,7 +209,7 @@
     NewLIR2(kThumb2Vcmps, rl_src1.low_reg, rl_src2.low_reg);
   }
   NewLIR0(kThumb2Fmstat);
-  ConditionCode ccode = static_cast<ConditionCode>(mir->dalvikInsn.arg[0]);
+  ConditionCode ccode = mir->meta.ccode;
   switch (ccode) {
     case kCondEq:
     case kCondNe: