Tim Northover ca62919afb GlobalISel: don't emit degenerate G_INSERT instructions. ...

Before, we were producing G_INSERT instructions that were actually closer to a
cast or even a COPY when both input and output sizes are the same. This doesn't
really make sense and means that everything interpreting a G_INSERT also has to
handle all these kinds of casts.

So now we detect these degenerate cases and emit real casts instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297051 91177308-0d34-0410-b5e6-96231b3b80d8

2017-03-06 19:04:17 +00:00

..

llvm

GlobalISel: don't emit degenerate G_INSERT instructions.

2017-03-06 19:04:17 +00:00

llvm-c

[GVN] Initial check-in of a new global value numbering algorithm.

2016-12-22 16:03:48 +00:00