[NVPTX] Fix some usages of CodeGenOpt::None.

NVPTXLowerKernelArgs is required for correctness, so it should not be guarded
by CodeGenOpt::None.

NVPTXPeephole is optimization only, so it should be skipped when
CodeGenOpt::None.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@267619 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed