Pull in r165377 from upstream llvm trunk:
Pull in r165377 from upstream llvm trunk:

  X86: fcmov doesn't handle all possible EFLAGS, fall back to a branch
  for the others.

  Otherwise it will try to use SSE patterns and fail horribly if sse is
  disabled.

  Fixes PR14035.

This should fix the following assertion failure:

  Assertion failed: (Reg >= X86::FP0 && Reg <= X86::FP6 && "Expected FP
  register!"), function getFPReg, file
  contrib/llvm/lib/Target/X86/X86FloatingPoint.cpp, line 330.

which can show up when compiling contrib/compiler-rt, using -march=i686
through -march=pentium3 (CPU's which do support fcmov, but don't support
SSE2).

MFC after:	1 week

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase