https://bugs.llvm.org/show_bug.cgi?id=43211
Bug ID: 43211
Summary: [wasm] __import_module__, __import_name__ attributes
do not work with -flto
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: WebAssembly
Assignee: unassignedb...@nondot.org
Reporter: alonza...@gmail.com
CC: llvm-bugs@lists.llvm.org
extern void foo() __attribute__((__import_module__("module"),
__import_name__("base")));
int main() {
foo();
}
Building with say
emcc a.cpp -s ERROR_ON_UNDEFINED_SYMBOLS=0 -g
the output contains
(import "module" "base" (func $foo\28\29))
However, adding -flto to that command breaks things - it now imports as
(import "env" "_Z3foov" (func $foo\28\29))
Perhaps the attributes information is supported in wasm object files but not in
LLVM bitcode files?
This affects wasi which uses those attributes.
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