From 090e79add2f84981df974cfb4501b76c42d0e3e7 Mon Sep 17 00:00:00 2001
From: Merry <git@mary.rs>
Date: Sat, 30 Jul 2022 19:11:53 +0100
Subject: [PATCH] emit_arm64_data_processing: Implement CountLeadingZeros

---
 .../backend/arm64/emit_arm64_data_processing.cpp   | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/src/dynarmic/backend/arm64/emit_arm64_data_processing.cpp b/src/dynarmic/backend/arm64/emit_arm64_data_processing.cpp
index b3745b4b..23d80e09 100644
--- a/src/dynarmic/backend/arm64/emit_arm64_data_processing.cpp
+++ b/src/dynarmic/backend/arm64/emit_arm64_data_processing.cpp
@@ -1246,18 +1246,16 @@ void EmitIR<IR::Opcode::ByteReverseDual>(oaknut::CodeGenerator& code, EmitContex
 
 template<>
 void EmitIR<IR::Opcode::CountLeadingZeros32>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
-    (void)code;
-    (void)ctx;
-    (void)inst;
-    ASSERT_FALSE("Unimplemented");
+    EmitTwoOp<32>(
+        code, ctx, inst,
+        [&](auto& Wresult, auto& Woperand) { code.CLZ(Wresult, Woperand); });
 }
 
 template<>
 void EmitIR<IR::Opcode::CountLeadingZeros64>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
-    (void)code;
-    (void)ctx;
-    (void)inst;
-    ASSERT_FALSE("Unimplemented");
+    EmitTwoOp<64>(
+        code, ctx, inst,
+        [&](auto& Xresult, auto& Xoperand) { code.CLZ(Xresult, Xoperand); });
 }
 
 template<>