r219637 - Fix the build

[David Majnemer]

Author: majnemer
Date: Mon Oct 13 17:18:22 2014
New Revision: 219637

URL: http://llvm.org/viewvc/llvm-project?rev=219637&view=rev
Log:
Fix the build

Modified:
    cfe/trunk/lib/Lex/PPExpressions.cpp

Modified: cfe/trunk/lib/Lex/PPExpressions.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Lex/PPExpressions.cpp?rev=219637&r1=219636&r2=219637&view=diff
==============================================================================
--- cfe/trunk/lib/Lex/PPExpressions.cpp (original)
+++ cfe/trunk/lib/Lex/PPExpressions.cpp Mon Oct 13 17:18:22 2014
@@ -599,15 +599,10 @@ static bool EvaluateDirectiveSubExpr(PPV
       break;
     case tok::lessless: {
       // Determine whether overflow is about to happen.
-      unsigned ShAmt = static_cast<unsigned>(RHS.Val.getLimitedValue());
-      if (LHS.isUnsigned()) {
-        Overflow = ShAmt >= LHS.Val.getBitWidth();
-        if (Overflow)
-          ShAmt = LHS.Val.getBitWidth()-1;
-        Res = LHS.Val << ShAmt;
-      } else {
-        Res = llvm::APSInt(LHS.Val.sshl_ov(ShAmt, Overflow), false);
-      }
+      if (LHS.isUnsigned())
+        Res = LHS.Val.ushl_ov(RHS.Val, Overflow);
+      else
+        Res = llvm::APSInt(LHS.Val.sshl_ov(RHS.Val, Overflow), false);
       break;
     }
     case tok::greatergreater: {