From 3108222c2cb3e61097396274b1c3ae0a86625975 Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Tue, 11 Aug 2009 15:59:48 +0000
Subject: [PATCH] Simplify this code. The case where one class is GR64RegClass
 and the other is a subclass of it is effectively handled by the prior tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78676 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/X86InstrInfo.cpp | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp
index 79bd0af99e8..1b1c093e4eb 100644
--- a/lib/Target/X86/X86InstrInfo.cpp
+++ b/lib/Target/X86/X86InstrInfo.cpp
@@ -1699,15 +1699,11 @@ bool X86InstrInfo::copyRegToReg(MachineBasicBlock &MBB,
     // Neither of GR64_NOREX or GR64_NOSP is a superclass of the other,
     // but we want to copy then as GR64. Similarly, for GR32_NOREX and
     // GR32_NOSP, copy as GR32.
-    if ((SrcRC == &X86::GR64RegClass ||
-         SrcRC->hasSuperClass(&X86::GR64RegClass)) &&
-        (DestRC == &X86::GR64RegClass ||
-         DestRC->hasSuperClass(&X86::GR64RegClass)))
+    if (SrcRC->hasSuperClass(&X86::GR64RegClass) &&
+        DestRC->hasSuperClass(&X86::GR64RegClass))
       CommonRC = &X86::GR64RegClass;
-    else if ((SrcRC == &X86::GR32RegClass ||
-              SrcRC->hasSuperClass(&X86::GR32RegClass)) &&
-             (DestRC == &X86::GR32RegClass ||
-              DestRC->hasSuperClass(&X86::GR32RegClass)))
+    else if (SrcRC->hasSuperClass(&X86::GR32RegClass) &&
+             DestRC->hasSuperClass(&X86::GR32RegClass))
       CommonRC = &X86::GR32RegClass;
     else
       CommonRC = 0;