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ELFRelocationEntry::operator<(): Try to stabilize the order. r_offset was insufficient to sort Relocs.

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It should fix llvm/test/CodeGen/ARM/ehabi-mc-compact-pr*.ll on some hosts.

  RELOCATION RECORDS FOR [.ARM.exidx]:
  0 R_ARM_PREL31 .text
  0 R_ARM_NONE __aeabi_unwind_cpp_pr0

FIXME: I am not sure of the directions of extra comparators, in Type and Index.
For now, they are different from the direction in r_offset.

llvm-svn: 181864
This commit is contained in:
NAKAMURA Takumi 2013-05-15 02:16:23 +00:00
parent f8c04c27fc
commit 11831ffe02
1 changed files with 8 additions and 1 deletions
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9
include/llvm/MC/MCELFObjectWriter.h
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@ -45,7 +45,14 @@ struct ELFRelocationEntry {
// Support lexicographic sorting.
bool operator<(const ELFRelocationEntry &RE) const {
return RE.r_offset < r_offset;
if (RE.r_offset != r_offset)
return RE.r_offset < r_offset;
if (Type != RE.Type)
return Type < RE.Type;
if (Index != RE.Index)
return Index < RE.Index;
llvm_unreachable("ELFRelocs might be unstable!");
return 0;
}
};