[llvm] [AMDGPU] Preserve instruction flags in ILP scheduler (PR #211190)

[Robert Imschweiler via llvm-commits]

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@@ -0,0 +1,47 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 6
+# RUN: llc -mtriple=amdgpu9.42-amd-amdhsa -run-pass=machine-scheduler -o - %s | FileCheck %s
+
+# Ensure that the scheduler preserves flags such as `undef` even if it fails to
+# find a schedule that meets the occupancy requirement.
+--- |
+  target triple = "amdgcn-amd-amdhsa"
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ro-i wrote:

new triple?

https://github.com/llvm/llvm-project/pull/211190