[llvm] Hexagon QFP Optimizer (PR #163843)

[Brian Cain via llvm-commits]

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+; RUN: llc -mtriple=hexagon -mattr=+hvxv68,+hvx,+hvx-length128b < %s | FileCheck %s
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+; Test that the Qfloat optimization pass doesn't crash due to an invalid
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androm3da wrote:

I mean -- does the test case fail *on the baseline* w/o asserts?

https://github.com/llvm/llvm-project/pull/163843