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Darwin assembler improved relocs when w/o subsections_via_symbols.

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When the file isn't being built with subsections-via-symbols, symbol
differences involving non-local symbols can be resolved more aggressively.
Needed for gas compatibility.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146054 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach
2011-12-07 19:46:59 +00:00
parent feb468ab24
commit 577b09155f
5 changed files with 16 additions and 2 deletions
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7
lib/MC/MachObjectWriter.cpp
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@@ -584,9 +584,14 @@ IsSymbolRefDifferenceFullyResolvedImpl(const MCAssembler &Asm,
// requires the compiler to use .set to absolutize the differences between
// symbols which the compiler knows to be assembly time constants, so we
// don't need to worry about considering symbol differences fully resolved.
//
// If the file isn't using sub-sections-via-symbols, we can make the
// same assumptions about any symbol that we normally make about
// assembler locals.
if (!Asm.getBackend().hasReliableSymbolDifference()) {
if (!SA.isTemporary() || !SA.isInSection() || &SecA != &SecB)
if ((!SA.isTemporary() && Asm.getSubsectionsViaSymbols()) ||
!SA.isInSection() || &SecA != &SecB)
return false;
return true;
}