[llvm] [AMDGPU] Don't cluster lds instrs together (PR #180908)

[Lucas Ramirez via llvm-commits]

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@@ -1,6 +1,8 @@
-; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx942 -O3 -debug-only=machine-scheduler 2>&1 < %s | FileCheck -check-prefix=DEBUG %s
+; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx942 -O3 -debug-only=machine-scheduler 2>&1 < %s
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lucas-rami wrote:

Removing the CHECKs makes the test much less meaningful because the failure it used to trigger can only happen when the scheduler takes specific steps. But this was never going to be a super stable test so I think it's fine to remove those for now; I'll try to thinkg of a better way to trigger the behavior the test relies on. I am putting the necessary changes as suggestions. 

https://github.com/llvm/llvm-project/pull/180908