Merge pull request #3084 from Sonicadvance1/optimize_bswap

OpcodeDispatcher: Optimize 32-bit bswap

FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp

@@ -4337,7 +4337,7 @@ void OpDispatchBuilder::BSWAPOp(OpcodeArgs) {
     Dest = _Constant(0);
   }
   else {
-    Dest = LoadSource(GPRClass, Op, Op->Dest, Op->Flags, -1);
+    Dest = LoadSource_WithOpSize(GPRClass, Op, Op->Dest, CTX->GetGPRSize(), Op->Flags, -1);
     Dest = _Rev(IR::SizeToOpSize(Size), Dest);
   }
   StoreResult(GPRClass, Op, Dest, -1);

unittests/InstructionCountCI/Secondary.json

@@ -3705,12 +3705,11 @@
       ]
     },
     "bswap eax": {
-      "ExpectedInstructionCount": 2,
-      "Optimal": "No",
+      "ExpectedInstructionCount": 1,
+      "Optimal": "Yes",
       "Comment": "0x0f 0xc8",
       "ExpectedArm64ASM": [
-        "lsr w20, w4, #0",
-        "rev w4, w20"
+        "rev w4, w4"
       ]
     },
     "bswap rax": {