[llvm] [llvm][X86] Fix merging of large sp updates (PR #125007)

[Phoebe Wang via llvm-commits]

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@@ -0,0 +1,31 @@
+; RUN: llc < %s -O3 -mtriple=x86_64-linux-unknown -verify-machineinstrs -o %t.s
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phoebewang wrote:

Do not need `O3`.

https://github.com/llvm/llvm-project/pull/125007