[llvm-bugs] [Bug 44105] New: Clang generates @PLT branches for powerpc, even when built without -fPIC

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=44105

            Bug ID: 44105
           Summary: Clang generates @PLT branches for powerpc, even when
                    built without -fPIC
           Product: clang
           Version: unspecified
          Hardware: Macintosh
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: LLVM Codegen
          Assignee: unassignedclangbugs at nondot.org
          Reporter: chmeeedalf at gmail.com
                CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
                    richard-llvm at metafoo.co.uk

A simple program:

int main(int);

int __start(void) {
  return main(0);
}

When built with clang for powerpc: cc -m32 -ffreestanding -o freestanding.o

generates R_PPC_PLTREL24 relocations, when it should be generating only
R_PPC_REL32 relocations, and letting the linker do the fixups.  These
R_PPC_PLTREL24 relocations appear to be forcing GNU ld to use BSS-PLT instead
of secure-PLT.  Generating to asm, hand-removing the @PLT annotation, GNU ld
does not choose bss-plt.

Not sure if this is a clang bug or LLVM bug, as the intermediate LLVM listing
is difficult to decipher.

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