From 68259145d9ac1f8d4e2cc9fc73626254fcc5cf08 Mon Sep 17 00:00:00 2001
From: Jim Grosbach <grosbach@apple.com>
Date: Mon, 3 Oct 2011 22:30:24 +0000
Subject: ARM parsing/encoding for VCMP/VCMPE.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141038 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/ARM/AsmParser/ARMAsmParser.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'lib')

diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index 9f69594b02..81a6786804 100644
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -3582,6 +3582,17 @@ bool ARMAsmParser::ParseInstruction(StringRef Name, SMLoc NameLoc,
       delete Op;
     }
   }
+  // VCMP{E} does the same thing, but with a different operand count.
+  if ((Mnemonic == "vcmp" || Mnemonic == "vcmpe") && Operands.size() == 5 &&
+      static_cast<ARMOperand*>(Operands[4])->isImm()) {
+    ARMOperand *Op = static_cast<ARMOperand*>(Operands[4]);
+    const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op->getImm());
+    if (CE && CE->getValue() == 0) {
+      Operands.erase(Operands.begin() + 4);
+      Operands.push_back(ARMOperand::CreateToken("#0", Op->getStartLoc()));
+      delete Op;
+    }
+  }
   // Similarly, the Thumb1 "RSB" instruction has a literal "#0" on the
   // end. Convert it to a token here.
   if (Mnemonic == "rsb" && isThumb() && Operands.size() == 6 &&
-- 
cgit v1.2.3