[GlobalISel][AArch64] Add support for @llvm.ceil
This adds a G_FCEIL generic instruction and uses it in AArch64. This adds
selection for floating point ceil where it has a supported, dedicated
instruction. Other cases aren't handled here.
It updates the relevant gisel tests and adds a select-ceil test. It also adds a
check to arm64-vcvt.ll which ensures that we don't fall back when we run into
one of the relevant cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@349664 91177308-0d34-0410-b5e6-96231b3b80d8
9 files changed