From 36e8e074c90f11480389560e3f019a161f82efbe Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Mon, 10 Dec 2018 22:58:52 -0200
Subject: Misc. CPU improvements (#519)

* Fix and simplify TranslatorCache

* Fix some assignment alignments, remove some unused usings

* Changes to ILEmitter, separate it from ILEmitterCtx

* Rename ILEmitter to ILMethodBuilder

* Rename LdrLit and *_Fix opcodes

* Revert TranslatorCache impl to the more performant one, fix a few issues with it

* Allow EmitOpCode to be called even after everything has been emitted

* Make Emit and AdvanceOpCode private, simplify it a bit now that it starts emiting from the entry point

* Remove unneeded temp use

* Add missing exit call on TestExclusive

* Use better hash

* Implement the == and != operators
---
 ChocolArm64/Translation/ILOpCodeLoadState.cs | 42 ++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 ChocolArm64/Translation/ILOpCodeLoadState.cs

(limited to 'ChocolArm64/Translation/ILOpCodeLoadState.cs')

diff --git a/ChocolArm64/Translation/ILOpCodeLoadState.cs b/ChocolArm64/Translation/ILOpCodeLoadState.cs
new file mode 100644
index 00000000..ddab6110
--- /dev/null
+++ b/ChocolArm64/Translation/ILOpCodeLoadState.cs
@@ -0,0 +1,42 @@
+using ChocolArm64.State;
+using System.Reflection.Emit;
+
+namespace ChocolArm64.Translation
+{
+    struct ILOpCodeLoadState : IILEmit
+    {
+        private ILBlock _block;
+
+        public ILOpCodeLoadState(ILBlock block)
+        {
+            _block = block;
+        }
+
+        public void Emit(ILMethodBuilder context)
+        {
+            long intInputs = context.LocalAlloc.GetIntInputs(_block);
+            long vecInputs = context.LocalAlloc.GetVecInputs(_block);
+
+            LoadLocals(context, intInputs, RegisterType.Int);
+            LoadLocals(context, vecInputs, RegisterType.Vector);
+        }
+
+        private void LoadLocals(ILMethodBuilder context, long inputs, RegisterType baseType)
+        {
+            for (int bit = 0; bit < 64; bit++)
+            {
+                long mask = 1L << bit;
+
+                if ((inputs & mask) != 0)
+                {
+                    Register reg = ILMethodBuilder.GetRegFromBit(bit, baseType);
+
+                    context.Generator.EmitLdarg(TranslatedSub.StateArgIdx);
+                    context.Generator.Emit(OpCodes.Ldfld, reg.GetField());
+
+                    context.Generator.EmitStloc(context.GetLocalIndex(reg));
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
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