IR: Move implementation of the constructor and Reset into the cpp file

Neither of these are intended to be called extremely frequently to warrant
this.

Source/Core/Core/PowerPC/JitILCommon/IR.cpp

@@ -137,6 +137,39 @@ using namespace Gen;
 
 namespace IREmitter
 {
+IRBuilder::IRBuilder()
+{
+  Reset();
+}
+
+void IRBuilder::Reset()
+{
+  InstList.clear();
+  InstList.reserve(100000);
+  MarkUsed.clear();
+  MarkUsed.reserve(100000);
+
+  for (unsigned i = 0; i < 32; i++)
+  {
+    GRegCache[i] = nullptr;
+    GRegCacheStore[i] = nullptr;
+    FRegCache[i] = nullptr;
+    FRegCacheStore[i] = nullptr;
+  }
+
+  CarryCache = nullptr;
+  CarryCacheStore = nullptr;
+
+  for (unsigned i = 0; i < 8; i++)
+  {
+    CRCache[i] = nullptr;
+    CRCacheStore[i] = nullptr;
+  }
+
+  CTRCache = nullptr;
+  CTRCacheStore = nullptr;
+}
+
 InstLoc IRBuilder::EmitZeroOp(unsigned Opcode, unsigned extra = 0)
 {
   InstLoc curIndex = InstList.data() + InstList.size();

Source/Core/Core/PowerPC/JitILCommon/IR.h

@@ -229,7 +229,10 @@ InstLoc inline getOp2(InstLoc i)
 class IRBuilder
 {
 public:
-  IRBuilder() { Reset(); }
+  IRBuilder();
+
+  void Reset();
+
   InstLoc EmitIntConst(unsigned value) { return EmitIntConst64(value); }
   InstLoc EmitIntConst64(u64 value);
 
@@ -382,34 +385,6 @@ public:
   bool IsMarkUsed(InstLoc I) const;
   void WriteToFile(u64 codeHash);
 
-  void Reset()
-  {
-    InstList.clear();
-    InstList.reserve(100000);
-    MarkUsed.clear();
-    MarkUsed.reserve(100000);
-
-    for (unsigned i = 0; i < 32; i++)
-    {
-      GRegCache[i] = nullptr;
-      GRegCacheStore[i] = nullptr;
-      FRegCache[i] = nullptr;
-      FRegCacheStore[i] = nullptr;
-    }
-
-    CarryCache = nullptr;
-    CarryCacheStore = nullptr;
-
-    for (unsigned i = 0; i < 8; i++)
-    {
-      CRCache[i] = nullptr;
-      CRCacheStore[i] = nullptr;
-    }
-
-    CTRCache = nullptr;
-    CTRCacheStore = nullptr;
-  }
-
 private:
   IRBuilder(IRBuilder&);  // DO NOT IMPLEMENT