[llvm] [LV][VPlan] Prevent calculate cost for skiped instructions in precomputeCosts(). (PR #127966)

[Florian Hahn via llvm-commits]

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@@ -0,0 +1,87 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -passes=loop-vectorize -mtriple=x86_64-unknown-linux-gnu -S | FileCheck %s
+
+; Check if the vplan-based cost model select same VF to the legacy cost model.
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fhahn wrote:

Might be good to group with other tests for various crashes, llvm/test/Transforms/LoopVectorize/X86/cost-model.

https://github.com/llvm/llvm-project/pull/127966