[llvm] Split vgpr regalloc pipeline (PR #93526)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,17 @@
+; RUN: not llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -mattr=-flat-for-global -stress-regalloc=3 -filetype=null %s 2>&1 | FileCheck %s
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arsenm wrote:

This is far too roundabout way of getting there, there must be a simpler way of getting SGPR uses. No new uses of -flat-for-global should be introduced 

https://github.com/llvm/llvm-project/pull/93526