[LLVMbugs] [Bug 19512] New: globalopt can introduce a use of the GOT

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Tue Apr 22 14:02:40 PDT 2014


            Bug ID: 19512
           Summary: globalopt can introduce a use of the GOT
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            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

Running globalopt in

@foo = hidden alias void ()* @bar

define void @bar() {
  ret void

define void @zed() {
  call void @foo()
  ret void

will convert the call into a direct call to bar, which requires a got if
producing PIC code.

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