tree e55d89f941e3e42639101c7d38f659824374a07a
parent 6aa6872593d89f6390a366544c20d933c8513ec4
author Matt Wala <wala@google.com> 1438298871 -0700
committer Matt Wala <wala@google.com> 1439848349 -0700

Expand reduce-style kernels.

Bug: 22631253

Rename the RSForEachExpand pass / source file to RSKernelExpand. In
addition to already being responsible for expanding foreach-style
kernels, RSKernelExpand now expands reduce-style kernels from

  define foo @func(foo %a, foo %b)

into

  define void @func.expand(i8* %inBuf, i8* %outBuf, i32 len)

The expanded function reduces a sub-range of its input.

Change-Id: I518fa9367b57111a2f2a1b23903ff870c421beeb