[llvm] [CodeGen] Consider imm offsets when sorting framerefs (PR #166979)

[Matt Arsenault via llvm-commits]

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+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
+; RUN: llc -O0 -mtriple=amdgcn-amd-amdhsa -mcpu=gfx950 < %s | FileCheck %s --check-prefix=GFX950
+
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arsenm wrote:

Can you also add a more targeted test for LocalStackSlotAllocation that shows existing offsets? Probably easiest to use mir 

https://github.com/llvm/llvm-project/pull/166979