[llvm] [DAG][AMDGPU] Add lit tests for FMA combining with freeze and nnan variants (PR #142628)

[Harrison Hao via llvm-commits]

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@@ -0,0 +1,106 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=amdgcn -mcpu=gfx1100 < %s | FileCheck %s
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harrisonGPU wrote:

Thanks, I have updated.

https://github.com/llvm/llvm-project/pull/142628