[llvm] [X86] Reimplement bundle alignment mode (PR #175830)

[Fangrui Song via llvm-commits]

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@@ -0,0 +1,22 @@
+# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown --x86-align-branch-boundary=16 --x86-align-branch=fused+jcc --mc-relax-all %s -o - \
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MaskRay wrote:

For all tests, use `-triple=x86_64` instead of the verbose triple. Use `## ` for non-RUN-non-CHECK comments.

https://github.com/llvm/llvm-project/pull/175830