From: Vladimir Medic <Vladimir.Medic@imgtec.com>
Date: Wed, 17 Jul 2013 15:00:42 +0000 (+0000)
Subject: This patch checks for valid mnemonics at the beginning of parseInstruction method... 
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=fce9279ac0265fd5ea637dd30253bad26f4273da;p=oota-llvm.git

This patch checks for valid mnemonics at the beginning of parseInstruction method, thus giving the user the right error message for non-existing instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186512 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/Mips/AsmParser/MipsAsmParser.cpp b/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
index a4f3721771e..de3c4fd7954 100644
--- a/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
+++ b/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
@@ -1495,6 +1495,11 @@ MCSymbolRefExpr::VariantKind MipsAsmParser::getVariantKind(StringRef Symbol) {
 bool MipsAsmParser::
 ParseInstruction(ParseInstructionInfo &Info, StringRef Name, SMLoc NameLoc,
                  SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
+  // Check if we have valid mnemonic
+  if (!mnemonicIsValid(Name)) {
+    Parser.eatToEndOfStatement();
+    return Error(NameLoc, "Unknown instruction");
+  }
   // First operand in MCInst is instruction mnemonic.
   Operands.push_back(MipsOperand::CreateToken(Name, NameLoc));