JitArm64: Minor mtfsfix optimization

BFI takes two cycles on many CPUs, whereas AND (immediate) only takes one.
dolphin-emu · Apr 20, 2024 · 1eb3208 · 1eb3208
1 parent 637ae12
commit 1eb3208
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/Source/Core/Core/PowerPC/JitArm64/JitArm64_SystemRegisters.cpp b/Source/Core/Core/PowerPC/JitArm64/JitArm64_SystemRegisters.cpp
@@ -896,7 +896,7 @@ void JitArm64::mtfsfix(UGeckoInstruction inst)
   }
   else if (imm == 0x0)
   {
-    BFI(WA, ARM64Reg::WZR, shift, 4);
+    AND(WA, WA, LogicalImm(~mask, GPRSize::B32));
   }
   else
   {