Fix to idiom19 and fixFloatEmulation()

include/icode.h

@@ -65,6 +65,8 @@ struct LivenessSet : public std::bitset<32>
     {
         return test(r-rAX);
     }
+private:
+    void postProcessCompositeRegs();
 };
 
 extern LivenessSet duReg[30];

include/idioms/arith_idioms.h

@@ -37,6 +37,8 @@ struct Idiom18 : public Idiom
 protected:
     iICODE m_icodes[4];
     bool m_is_dec;
+    /* type of variable: 1 = reg-var, 2 = local */
+    int m_idiom_type;
 public:
     Idiom18(Function *f) : Idiom(f)
     {
@@ -64,7 +66,7 @@ struct Idiom20 : public Idiom
 {
 protected:
     iICODE m_icodes[4];
-    bool m_is_dec;
+    condNodeType m_is_dec;
 public:
     Idiom20(Function *f) : Idiom(f)
     {

include/machine_x86.h

@@ -75,8 +75,11 @@ public:
     }
     static eReg subRegH(eReg reg);
     static eReg subRegL(eReg reg);
-
     static bool isMemOff(eReg r);
     static bool isSubRegisterOf(eReg reg, eReg parent);
+    static bool hasSubregisters(eReg reg);
+
+    static bool isPartOfComposite(eReg reg);
+    static eReg compositeParent(eReg reg);
 
 };