[NVPTX] Add infrastructure for vector loads/stores of parameters

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185171 91177308-0d34-0410-b5e6-96231b3b80d8
[NVPTX] Clean up handling of formal arguments and enable generation of vector parameter loads

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185172 91177308-0d34-0410-b5e6-96231b3b80d8
[NVPTX] Add support for vectorized function return values

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185173 91177308-0d34-0410-b5e6-96231b3b80d8
[NVPTX] Remove i8 register class.  PTX support for i8 (.b8, .u8, .s8) is rather poor and we're better off just ignoring it and letting LLVM expand all i8 ops out to i16.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185174 91177308-0d34-0410-b5e6-96231b3b80d8
[NVPTX] Clean up comparison/select/convert patterns and factor out PTX instructions from their patterns

Test case is no breakage

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185175 91177308-0d34-0410-b5e6-96231b3b80d8
[NVPTX] Add support for cttz/ctlz/ctpop

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185176 91177308-0d34-0410-b5e6-96231b3b80d8
[NVPTX] Calling conventions fix

Fix ABI handling for function
returning bool -- use st.param.b32 to return the value
and use ld.param.b32 in caller to load the return value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185177 91177308-0d34-0410-b5e6-96231b3b80d8
[NVPTX] Add (1.0 / sqrt(x)) => rsqrt(x) generation when allowable by FP flags

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185178 91177308-0d34-0410-b5e6-96231b3b80d8
[NVPTX] Select -1 instead of 1 when anyextend'ing i1 types

This makes it more consistent with the ZeroOrNegativeOneBooleanContent flag

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185179 91177308-0d34-0410-b5e6-96231b3b80d8