[llvm] [AArch64] Update cost model for extracting halves from 128+ bit vectors (PR #155601)

[Gaëtan Bossu via llvm-commits]

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@@ -1,10 +1,10 @@
 ; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
-; RUN: opt < %s -mtriple=aarch64--linux-gnu -passes="print<cost-model>" -cost-kind=all 2>&1 -disable-output | FileCheck %s
+; RUN: opt < %s -mtriple=aarch64 -mattr=+sve -passes="print<cost-model>" -cost-kind=all 2>&1 -disable-output | FileCheck %s
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gbossu wrote:

Discussed offline:
 - I restored the existing test to only care about NEON as it did before
 - I created a new file specifically to test VLS SVE

https://github.com/llvm/llvm-project/pull/155601