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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225950 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp
index 28824488a7115bc4867e26496f82724aa0a3da02..02d48470615b1d01efaac72d57adcf87b1522f21 100644 (file)
--- a/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ b/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]");