[llvm] [AMDGPU] Prevent folding of FMAC into FMAAK with two literals (PR #217438)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,20 @@
+# RUN: llc -mtriple=amdgcn -mcpu=gfx1201 -run-pass peephole-opt -verify-machineinstrs -o - %s | FileCheck %s
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arsenm wrote:

```suggestion
# RUN: llc -mtriple=amdgpu12.01-run-pass=peephole-opt  -o - %s | FileCheck %s
```

https://github.com/llvm/llvm-project/pull/217438