[llvm] [AArch64] Mark FMOVvXfY_ns as rematerializable, cheap (PR #169186)

[David Green via llvm-commits]

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@@ -0,0 +1,159 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=aarch64 -mattr=+neon -run-pass=greedy -o - %s | FileCheck %s
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davemgreen wrote:

It is worth trying with -verify-machineinstrs to make sure it will work with EXPENSIVE_CHECKS on. You probably don't need both run lines, the one with +fullfp16 is probably OK. I don't think using FMOVv8f16_ns is valid without it.

https://github.com/llvm/llvm-project/pull/169186