[llvm] Add a pass "SinkGEPConstOffset" (PR #140657)

[via llvm-commits]

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+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc < %s -mtriple=amdgcn-amd-mesa3d -mcpu=gfx1100 -verify-machineinstrs | FileCheck %s
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StevenYangCC wrote:

I have made changes based on the suggestions you made, please verify the results.

https://github.com/llvm/llvm-project/pull/140657