From 326220309b8463fac86768bdc2e8976e0904af0c Mon Sep 17 00:00:00 2001
From: gibbed <rick@gibbed.us>
Date: Fri, 27 Nov 2020 05:32:00 -0600
Subject: [PATCH] [x64] Handle constant in LOG2_F32/F64/V128.

---
 src/xenia/cpu/backend/x64/x64_sequences.cc | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/src/xenia/cpu/backend/x64/x64_sequences.cc b/src/xenia/cpu/backend/x64/x64_sequences.cc
index f6a688b09..37a05c60b 100644
--- a/src/xenia/cpu/backend/x64/x64_sequences.cc
+++ b/src/xenia/cpu/backend/x64/x64_sequences.cc
@@ -2460,7 +2460,11 @@ struct LOG2_F32 : Sequence<LOG2_F32, I<OPCODE_LOG2, F32Op, F32Op>> {
   }
   static void Emit(X64Emitter& e, const EmitArgType& i) {
     assert_always();
-    e.lea(e.GetNativeParam(0), e.StashXmm(0, i.src1));
+    if (i.src1.is_constant) {
+      e.lea(e.GetNativeParam(0), e.StashConstantXmm(0, i.src1.constant()));
+    } else {
+      e.lea(e.GetNativeParam(0), e.StashXmm(0, i.src1));
+    }
     e.CallNativeSafe(reinterpret_cast<void*>(EmulateLog2));
     e.vmovaps(i.dest, e.xmm0);
   }
@@ -2474,7 +2478,11 @@ struct LOG2_F64 : Sequence<LOG2_F64, I<OPCODE_LOG2, F64Op, F64Op>> {
   }
   static void Emit(X64Emitter& e, const EmitArgType& i) {
     assert_always();
-    e.lea(e.GetNativeParam(0), e.StashXmm(0, i.src1));
+    if (i.src1.is_constant) {
+      e.lea(e.GetNativeParam(0), e.StashConstantXmm(0, i.src1.constant()));
+    } else {
+      e.lea(e.GetNativeParam(0), e.StashXmm(0, i.src1));
+    }
     e.CallNativeSafe(reinterpret_cast<void*>(EmulateLog2));
     e.vmovaps(i.dest, e.xmm0);
   }
@@ -2489,7 +2497,11 @@ struct LOG2_V128 : Sequence<LOG2_V128, I<OPCODE_LOG2, V128Op, V128Op>> {
     return _mm_load_ps(values);
   }
   static void Emit(X64Emitter& e, const EmitArgType& i) {
-    e.lea(e.GetNativeParam(0), e.StashXmm(0, i.src1));
+    if (i.src1.is_constant) {
+      e.lea(e.GetNativeParam(0), e.StashConstantXmm(0, i.src1.constant()));
+    } else {
+      e.lea(e.GetNativeParam(0), e.StashXmm(0, i.src1));
+    }
     e.CallNativeSafe(reinterpret_cast<void*>(EmulateLog2));
     e.vmovaps(i.dest, e.xmm0);
   }