[llvm] [AMDGCN] Allow unscheduling of bundled insns (PR #129769)

[Julian Brown via llvm-commits]

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+; RUN: llc -mtriple=amdgcn -mcpu=gfx90a -verify-machineinstrs -O1 -stop-after=machine-scheduler < %s | FileCheck -check-prefix=DEBUG %s
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jtb20 wrote:

OK, thanks. Regarding -O1 -- apparently, yes. The mir test is a bit bloaty, not sure if that's normal/acceptable or not?

https://github.com/llvm/llvm-project/pull/129769