[PATCH] D153576: [Headers] Fix up some conditionals

[Phoebe Wang via Phabricator via cfe-commits]

pengfei added a comment.

In D153576#4442096 <https://reviews.llvm.org/D153576#4442096>, @craig.topper wrote:

> The mulx function being 32-bit mode only is also true in gcc. It probably won't generate a mulx instruction on x86-64. Maybe that's why it was 32-bit only? But it should still be functionally correct.

It's not functionally correct. Candidate fix D153620 <https://reviews.llvm.org/D153620>.


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https://reviews.llvm.org/D153576