R600/SI: Use VALU instructions for i1 ops

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208885 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Only use SALU instructions for 64-bit add in a block of CF depth 0

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208886 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Fix a bug with handling of INSERT_SUBREG in SIFixSGPRCopies

This prevents a future commit from regressing the load-i1.ll test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208887 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Stop using VSrc_* as the default register class for types.

We now use SReg_* for integer types and VReg_* for floating-point types.
This should help simplify the SIFixSGPRCopies pass and no longer causes
ISel to insert a COPY after termiator instuctions that output a value.

This change is covered by exisitng tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208888 91177308-0d34-0410-b5e6-96231b3b80d8