SROA: Handle casts involving vectors of pointers and integer scalars.

SROA wants to convert any types of equivalent widths but it's not possible to
convert vectors of pointers to an integer scalar with a single cast. As a
workaround we add a bitcast to the corresponding int ptr type first. This type
of cast used to be an edge case but has become common with SLP vectorization.
Fixes PR17271.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191143 91177308-0d34-0410-b5e6-96231b3b80d8
[Sparc] Fix lowering FABS on fp128 (long double) on pre-v9 targets.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191154 91177308-0d34-0410-b5e6-96231b3b80d8
Correct the pre-increment load latencies in the PPC A2 itinerary

Pre-increment loads are microcoded on the A2, and the address increment occurs
only after the load completes. As a result, the latency of the GPR address
update is an additional 2 cycles on top of the load latency.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191156 91177308-0d34-0410-b5e6-96231b3b80d8
[Sparc] Emit .register directive to declare the use of global registers %g2, %g4, %g6 and %g7.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191158 91177308-0d34-0410-b5e6-96231b3b80d8