R600: Move MIN/MAX matching from LowerOperation() to PerformDAGCombine()

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208429 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Expand i64 SELECT_CC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208430 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Fix SMRD pattern for offsets > 32 bits

We were dropping the high bits of 64-bit immediate offsets.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208431 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Teach SIInstrInfo::moveToVALU() how to move S_LOAD_*_IMM instructions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208432 91177308-0d34-0410-b5e6-96231b3b80d8