X86: only access operands if they are present

If there is no associated immediate (MS style inline asm), do not try to access
the operand, assume that it is valid.  This should fix the buildbots after SVN
r225941.

llvm-svn: 225950

diff --git a/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp b/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp
index 2882448..02d4847 100644 (file)
--- a/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ b/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -2277,6 +2277,8 @@ bool X86AsmParser::validateInstruction(MCInst &Inst, const OperandVector &Ops) {
   switch (Inst.getOpcode()) {
   default: return true;
   case X86::INT:
+    if (Inst.getNumOperands() == 0)
+      return true;
     assert(Inst.getOperand(0).isImm() && "expected immediate");
     if (Inst.getOperand(0).getImm() > 255) {
       Error(Ops[1]->getStartLoc(), "interrupt vector must be in range [0-255]");