[llvm-branch-commits] [llvm] RegisterPressure: Detect dead physreg defs from LiveIntervals with lane masks (PR #233215)

[Matt Arsenault via llvm-branch-commits]

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@@ -0,0 +1,30 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 6
+# REQUIRES: expensive_checks
+# RUN: llc -mtriple=amdgpu9.00-amd-amdhsa -passes=machine-scheduler %s -o - | FileCheck %s
+
+# The clobber is dead except for $vgpr1 but has no dead flag. Its dead
+# lanes must be found from LiveIntervals with lane mask tracking.
+
+---
+name:            unflagged_dead_clobber
+tracksRegLiveness: true
+machineFunctionInfo:
+  occupancy:       6
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arsenm wrote:

I assumed yes since it was a scheduling test but it's so small it probably doesn't matter 

https://github.com/llvm/llvm-project/pull/233215