[LLVMbugs] [Bug 21225] New: missed optimization: rauw of a function with an identical one

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=21225

            Bug ID: 21225
           Summary: missed optimization: rauw of a function with an
                    identical one
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: Interprocedural Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: rafael.espindola at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

opt -O3 will not modify

declare void @bar()
define linkonce_odr void @foo() unnamed_addr {
  call void @bar()
  ret void
}
@v = global void()* @foo

but it could change it to

declare void @bar()
@v = global void()* @bar

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