[llvm] Improving ThinLTO error message for inline assembly errors (PR #102211)

[Fangrui Song via llvm-commits]

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@@ -1,2 +1,3 @@
 if not config.target_triple:
     config.unsupported = True
+config.pipefail = False
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MaskRay wrote:

Use `not xxx | FileCheck` to avoid `config.pipefail`

https://github.com/llvm/llvm-project/pull/102211