https://bugs.llvm.org/show_bug.cgi?id=50045
Bug ID: 50045
Summary: unnamed_addr wrapper function not removed
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: Interprocedural Optimizations
Assignee: unassignedb...@nondot.org
Reporter: richard-l...@metafoo.co.uk
CC: llvm-bugs@lists.llvm.org
Testcase:
@foo = global void ()* @bar
declare void @baz();
define internal void @bar() unnamed_addr {
tail call void @baz()
ret void
}
I would expect this to be optimized to:
@foo = global void ()* @baz
declare void @baz();
... but it is not. This comes up in C++ for cases such as:
void f();
auto *p = +[]{ f(); }
... where the language rules permit marking the static invoker for the lambda
as unnamed_addr -- the only constraints are on the behavior of the returned
pointer, not on its valid. (Clang doesn't do this yet.)
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