<html>
    <head>
      <base href="https://bugs.llvm.org/">
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - wasm32: Import module directive no longer preserved"
   href="https://bugs.llvm.org/show_bug.cgi?id=41383">41383</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>wasm32: Import module directive no longer preserved
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>lld
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>enhancement
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>All Bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>alex@crichton.co
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org, peter.smith@linaro.org, sbc@chromium.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>It looks like LLVM may have regressed recently by accident after the 8.0
release? Some local testing with tip-of-tree in a local Rust compiler for the
wasm target shows that this IR:



declare void @foo() #1                          

define void @bar() {                            
  call void @foo()                              
  ret void                                      
}                                               

attributes #1 = { "wasm-import-module"="test" } 




when compiled:


  $ llc foo.ll -filetype=obj -mtriple=wasm32-unknown-unknown -o foo.o
  $ wasm-ld foo.o -o foo.wasm --no-entry --allow-undefined --export-dynamic
  $ wasm2wat foo.wasm | grep import
  (import "env" "foo" (func $foo (type 0)))



it looks like the name of the wasm import module, "test", was lost?</pre>
        </div>
      </p>


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