https://bugs.llvm.org/show_bug.cgi?id=41383
Bug ID: 41383
Summary: wasm32: Import module directive no longer preserved
Product: lld
Version: unspecified
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: All Bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected]
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?
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