[llvm] [AMDGPU][SIPreEmitPeephole] pre-commit tests: mustRetainExeczBranch: use a cost model (PR #109816)

[Juan Manuel Martinez Caamaño via llvm-commits]

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+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=amdgcn -mcpu=gfx1010 < %s | FileCheck -check-prefixes=GFX10,GFX1010 %s
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jmmartinez wrote:

Added gfx90a.

https://github.com/llvm/llvm-project/pull/109816