[llvm] [DAG] Teach SelectionDAGBuilder to read parameter alignment of compressstore/expandload. (PR #83763)

[Craig Topper via llvm-commits]

================
@@ -0,0 +1,33 @@
+; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -start-after=codegenprepare -stop-before finalize-isel | FileCheck %s
----------------
topperc wrote:

Use update_mir_test_checks.py. I'll fix the compress store test to use the script and we can rebase this on top of that

https://github.com/llvm/llvm-project/pull/83763