Merge pull request #12662 from JosJuice/jitarm64-imm-rc0-sxtw

JitArm64: Skip SXTW in ComputeRC0(u64)
dolphin-emu · Mar 29, 2024 · f30d3c9 · f30d3c9
2 parents 5f6a054 + 9f0a7c9
commit f30d3c9
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Showing 2 changed files with 3 additions and 5 deletions.
diff --git a/Source/Core/Core/PowerPC/JitArm64/Jit.h b/Source/Core/Core/PowerPC/JitArm64/Jit.h
@@ -351,7 +351,7 @@ class JitArm64 : public JitBase, public Arm64Gen::ARM64CodeBlock, public CommonA
   void UpdateRoundingMode();
 
   void ComputeRC0(Arm64Gen::ARM64Reg reg);
-  void ComputeRC0(u64 imm);
+  void ComputeRC0(u32 imm);
   void ComputeCarry(Arm64Gen::ARM64Reg reg);  // reg must contain 0 or 1
   void ComputeCarry(bool carry);
   void ComputeCarry();

diff --git a/Source/Core/Core/PowerPC/JitArm64/JitArm64_Integer.cpp b/Source/Core/Core/PowerPC/JitArm64/JitArm64_Integer.cpp
@@ -37,12 +37,10 @@ void JitArm64::ComputeRC0(ARM64Reg reg)
   SXTW(gpr.CR(0), reg);
 }
 
-void JitArm64::ComputeRC0(u64 imm)
+void JitArm64::ComputeRC0(u32 imm)
 {
   gpr.BindCRToRegister(0, false);
-  MOVI2R(gpr.CR(0), imm);
-  if (imm & 0x80000000)
-    SXTW(gpr.CR(0), EncodeRegTo32(gpr.CR(0)));
+  MOVI2R(gpr.CR(0), s64(s32(imm)));
 }
 
 void JitArm64::ComputeCarry(ARM64Reg reg)