C++11 is required, remove some preprocessor checks for it

We require C++11 to build, so remove a few remaining preprocessor checks for
'__cplusplus >= 201103L'. This should always be true.

llvm-svn: 264572

llvm/lib/Support/raw_ostream.cpp

@@ -230,7 +230,7 @@ raw_ostream &raw_ostream::operator<<(double N) {
   // On MSVCRT and compatible, output of %e is incompatible to Posix
   // by default. Number of exponent digits should be at least 2. "%+03d"
   // FIXME: Implement our formatter to here or Support/Format.h!
-#if __cplusplus >= 201103L && defined(__MINGW32__)
+#if defined(__MINGW32__)
   // FIXME: It should be generic to C++11.
   if (N == 0.0 && std::signbit(N))
     return *this << "-0.000000e+00";

llvm/lib/Transforms/Scalar/SROA.cpp

@@ -55,8 +55,8 @@
 #include "llvm/Transforms/Utils/Local.h"
 #include "llvm/Transforms/Utils/PromoteMemToReg.h"
 
-#if __cplusplus >= 201103L && !defined(NDEBUG)
-// We only use this for a debug check in C++11
+#ifndef NDEBUG
+// We only use this for a debug check.
 #include <random>
 #endif
 
@@ -1002,7 +1002,7 @@ AllocaSlices::AllocaSlices(const DataLayout &DL, AllocaInst &AI)
                               }),
                Slices.end());
 
-#if __cplusplus >= 201103L && !defined(NDEBUG)
+#ifndef NDEBUG
   if (SROARandomShuffleSlices) {
     std::mt19937 MT(static_cast<unsigned>(sys::TimeValue::now().msec()));
     std::shuffle(Slices.begin(), Slices.end(), MT);