[llvm] [AMDGPU][GlobalISel] Update G_TRUNC tests (PR #180647)

[Petar Avramovic via llvm-commits]

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@@ -1,13 +1,15 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
-; RUN: llc -global-isel -mtriple=amdgcn-amd-amdpal -mcpu=gfx1010 < %s | FileCheck -check-prefix=OLD_RBS %s
+; RUN: llc -global-isel -new-reg-bank-select -mtriple=amdgcn-amd-amdpal -mcpu=gfx1010 < %s | FileCheck -check-prefix=OLD_RBS %s
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petar-avramovic wrote:

Copilot is right, this test meant to test old vs new regbankselect

https://github.com/llvm/llvm-project/pull/180647