From d53132214980e5540033569ee8220542a030f4cc Mon Sep 17 00:00:00 2001
From: "Duncan P. N. Exon Smith" <dexonsmith@apple.com>
Date: Thu, 23 Jul 2015 19:27:07 +0000
Subject: [PATCH] X86: Use dyn_cast instead of isa+cast, NFC

llvm-svn: 243034
---
 llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp b/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp
index e9f859a..3f5e076 100644
--- a/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ b/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -2347,11 +2347,12 @@ bool X86AsmParser::ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
   // instalias with an immediate operand yet.
   if (Name == "int" && Operands.size() == 2) {
     X86Operand &Op1 = static_cast<X86Operand &>(*Operands[1]);
-    if (Op1.isImm() && isa<MCConstantExpr>(Op1.getImm()) &&
-        cast<MCConstantExpr>(Op1.getImm())->getValue() == 3) {
-      Operands.erase(Operands.begin() + 1);
-      static_cast<X86Operand &>(*Operands[0]).setTokenValue("int3");
-    }
+    if (Op1.isImm())
+      if (auto *CE = dyn_cast<MCConstantExpr>(Op1.getImm()))
+        if (CE->getValue() == 3) {
+          Operands.erase(Operands.begin() + 1);
+          static_cast<X86Operand &>(*Operands[0]).setTokenValue("int3");
+        }
   }
 
   return false;
-- 
2.7.4