[llvm] [IR] Composable and Extensible Memory Cache Control Hints (PR #181612)

[Yonah Goldberg via llvm-commits]

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+; RUN: not opt -passes=verify < %s 2>&1 | FileCheck %s
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YonahGoldberg wrote:

Looks like some of the verifier tests use opt -passes=verify and some use llvm-as. Maybe I should put up a PR to make them all use llvm-as so this doesn't keep happening.

https://github.com/llvm/llvm-project/pull/181612