From 0ebbc4a9c513bc3d82ed18fcbfe49c32e35f9c0b Mon Sep 17 00:00:00 2001
From: Merry <git@mary.rs>
Date: Wed, 27 Jul 2022 20:08:11 +0100
Subject: [PATCH] emit_arm64_packed: Implement PackedSelect

---
 src/dynarmic/backend/arm64/emit_arm64_packed.cpp | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/src/dynarmic/backend/arm64/emit_arm64_packed.cpp b/src/dynarmic/backend/arm64/emit_arm64_packed.cpp
index 5876910b..6430bad6 100644
--- a/src/dynarmic/backend/arm64/emit_arm64_packed.cpp
+++ b/src/dynarmic/backend/arm64/emit_arm64_packed.cpp
@@ -386,10 +386,16 @@ void EmitIR<IR::Opcode::PackedAbsDiffSumS8>(oaknut::CodeGenerator& code, EmitCon
 
 template<>
 void EmitIR<IR::Opcode::PackedSelect>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
-    (void)code;
-    (void)ctx;
-    (void)inst;
-    ASSERT_FALSE("Unimplemented");
+    auto args = ctx.reg_alloc.GetArgumentInfo(inst);
+
+    auto Vresult = ctx.reg_alloc.WriteD(inst);
+    auto Vge = ctx.reg_alloc.ReadD(args[0]);
+    auto Va = ctx.reg_alloc.ReadD(args[1]);
+    auto Vb = ctx.reg_alloc.ReadD(args[2]);
+    RegAlloc::Realize(Vresult, Vge, Va, Vb);
+
+    code.FMOV(Vresult, Vge);  // TODO: Move elimination
+    code.BSL(Vresult->B8(), Vb->B8(), Va->B8());
 }
 
 }  // namespace Dynarmic::Backend::Arm64