Fix a number of clang -Wsign-compare warnings that didn't have an obvious
solution.  The only reason these don't fire with gcc-4.2 is that gcc turns off
part of -Wsign-compare in C++ on accident.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100581 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index b472d1e..6ee4144 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1542,7 +1542,7 @@
           const APInt FltVal = FPImm.bitcastToAPInt();
           const char *FltPtr = (const char*)FltVal.getRawData();
 
-          unsigned NumBytes = FltVal.getBitWidth() / 8; // 8 bits per byte.
+          int NumBytes = FltVal.getBitWidth() / 8; // 8 bits per byte.
           bool LittleEndian = Asm->getTargetData().isLittleEndian();
           int Incr = (LittleEndian ? 1 : -1);
           int Start = (LittleEndian ? 0 : NumBytes - 1);