[PATCH] D43397: Bring back r323297.

[Rafael Avila de Espindola via Phabricator via llvm-commits]

espindola created this revision.
espindola added a reviewer: rnk.

It was reverted because it broke the grub build. The reason the grub build broke is because grub does its own relocation processing and was not handing R_386_PLT32. Since grub has no dynamic linker, the fix is trivial: handle R_386_PLT32 exactly like R_386_PC32.

On the report it was noted that they are using  -fno-integrated-assembler. The upstream GAS (starting with 451875b4f976a527395e9303224c7881b65e12ed) will already be producing a R_386_PLT32 anyway, so they have to update their code one way or the other

Original message:

Don't assume a null GV is local for ELF and MachO.

This is already a simplification, and should help with avoiding a plt
reference when calling an intrinsic with -fno-plt.

With this change we return false for null GVs, so the caller only
needs to check the new metadata to decide if it should use foo at plt or
 *foo at got.


https://reviews.llvm.org/D43397

Files:
  lib/Target/TargetMachine.cpp
  test/CodeGen/X86/finite-libcalls.ll
  test/CodeGen/X86/fp-intrinsics.ll
  test/CodeGen/X86/half.ll
  test/CodeGen/X86/memset-nonzero.ll
  test/CodeGen/X86/negative-sin.ll
  test/CodeGen/X86/vector-half-conversions.ll

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