From 5e0f8e873857ce3ca3f532aff0936beb28e412c8 Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Tue, 10 Jan 2023 19:16:59 -0300
Subject: Implement JIT Arm64 backend (#4114)

* Implement JIT Arm64 backend

* PPTC version bump

* Address some feedback from Arm64 JIT PR

* Address even more PR feedback

* Remove unused IsPageAligned function

* Sync Qc flag before calls

* Fix comment and remove unused enum

* Address riperiperi PR feedback

* Delete Breakpoint IR instruction that was only implemented for Arm64
---
 ARMeilleure/CodeGen/Optimizations/Optimizer.cs | 28 +++++++-------------------
 1 file changed, 7 insertions(+), 21 deletions(-)

(limited to 'ARMeilleure/CodeGen/Optimizations/Optimizer.cs')

diff --git a/ARMeilleure/CodeGen/Optimizations/Optimizer.cs b/ARMeilleure/CodeGen/Optimizations/Optimizer.cs
index 919e996b..a45bb455 100644
--- a/ARMeilleure/CodeGen/Optimizations/Optimizer.cs
+++ b/ARMeilleure/CodeGen/Optimizations/Optimizer.cs
@@ -44,8 +44,8 @@ namespace ARMeilleure.CodeGen.Optimizations
                         ConstantFolding.RunPass(node);
                         Simplification.RunPass(node);
 
-                        if (DestIsLocalVar(node))
-                        {   
+                        if (DestIsSingleLocalVar(node))
+                        {
                             if (IsPropagableCompare(node))
                             {
                                 modified |= PropagateCompare(ref buffer, node);
@@ -99,20 +99,6 @@ namespace ARMeilleure.CodeGen.Optimizations
             while (modified);
         }
 
-        private static Span<Operation> GetUses(ref Span<Operation> buffer, Operand operand)
-        {
-            ReadOnlySpan<Operation> uses = operand.Uses;
-
-            if (buffer.Length < uses.Length)
-            {
-                buffer = Allocators.Default.AllocateSpan<Operation>((uint)uses.Length);
-            }
-
-            uses.CopyTo(buffer);
-
-            return buffer.Slice(0, uses.Length);
-        }
-
         private static bool PropagateCompare(ref Span<Operation> buffer, Operation compOp)
         {
             // Try to propagate Compare operations into their BranchIf uses, when these BranchIf uses are in the form
@@ -160,7 +146,7 @@ namespace ARMeilleure.CodeGen.Optimizations
 
             Comparison compType = (Comparison)comp.AsInt32();
 
-            Span<Operation> uses = GetUses(ref buffer, dest);
+            Span<Operation> uses = dest.GetUses(ref buffer);
 
             foreach (Operation use in uses)
             {
@@ -199,7 +185,7 @@ namespace ARMeilleure.CodeGen.Optimizations
             Operand dest   = copyOp.Destination;
             Operand source = copyOp.GetSource(0);
 
-            Span<Operation> uses = GetUses(ref buffer, dest);
+            Span<Operation> uses = dest.GetUses(ref buffer);
 
             foreach (Operation use in uses)
             {
@@ -231,12 +217,12 @@ namespace ARMeilleure.CodeGen.Optimizations
 
         private static bool IsUnused(Operation node)
         {
-            return DestIsLocalVar(node) && node.Destination.UsesCount == 0 && !HasSideEffects(node);
+            return DestIsSingleLocalVar(node) && node.Destination.UsesCount == 0 && !HasSideEffects(node);
         }
 
-        private static bool DestIsLocalVar(Operation node)
+        private static bool DestIsSingleLocalVar(Operation node)
         {
-            return node.Destination != default && node.Destination.Kind == OperandKind.LocalVariable;
+            return node.DestinationsCount == 1 && node.Destination.Kind == OperandKind.LocalVariable;
         }
 
         private static bool HasSideEffects(Operation node)
-- 
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