http://llvm.org/bugs/show_bug.cgi?id=9364
Summary: clang should produce llvm.compiler.used with the
symbols needed for inline asm
Product: clang
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: LLVM Codegen
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
libLTO now has an streamer that lets it mark as used symbols needed by inline
asm. It would be nice to move that to a more central location so that clang
could do the same in a single compilation unit.
For example, there should be no need for the user to add __attribute__((used))
to bar in:
----------------------------
asm(".text\n foo: jmp bar");
int foo(void);
static int __attribute__((used)) bar(void) {
return 42;
}
int main(void) {
return foo();
}
---------------------------
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