[llvm] [AggressiveInstCombine] Implement store merge optimization (PR #147540)

[Yingwei Zheng via llvm-commits]

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@@ -0,0 +1,790 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
+; RUN: opt -S -passes=aggressive-instcombine -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s
+
+target triple = "x86_64-unknown-linux-gnu"
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dtcxzyw wrote:

```suggestion
```

https://github.com/llvm/llvm-project/pull/147540