[llvm] [llvm-mca] Account for AcquireAtCycles in llvm-mca (PR #80742)

[Michael Maitland via llvm-commits]

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@@ -89,11 +89,11 @@ static void initializeUsedResources(InstrDesc &ID,
       AllInOrderResources &= (PR.BufferSize <= 1);
     }
 
-    CycleSegment RCy(0, PRE->ReleaseAtCycle, false);
+    CycleSegment RCy(PRE->AcquireAtCycle, PRE->ReleaseAtCycle, false);
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michaelmaitland wrote:

I missed your comment above. I think your point is that we need to be able to do this without slowing things down too much. I have a rough idea on how me might do this in my head, but I am not sure when I will have time to pick this task back up again, since it is much less straightforward than I had for the original patch.

https://github.com/llvm/llvm-project/pull/80742