[llvm-bugs] [Bug 40794] New: LLVM fence lowering is not supported

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https://bugs.llvm.org/show_bug.cgi?id=40794

            Bug ID: 40794
           Summary: LLVM fence lowering is not supported
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: WebAssembly
          Assignee: unassignedbugs at nondot.org
          Reporter: aheejin at gmail.com
                CC: llvm-bugs at lists.llvm.org

LLVM's 'fence' instruction lowering is not supported in WebAssembly even with
-mattr=+atomics option on.

A CL (https://reviews.llvm.org/D50277) has been proposed, but we have not yet
reached a decision on what should we lower them to. This is a tracking bug for
this.

Previous discussion thread:
https://github.com/WebAssembly/tool-conventions/issues/59

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