ARM Darwin symbol ref differences w/o subsection-via-symbols.

When not using subsections via symbols, the assembler can resolve
symbol differences (including pcrel references) to non-local
labels at assembly time, not just those in the same atom.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148865 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2012-01-24 21:45:25 +00:00
parent 3b96e1fe3b
commit c389af94b6
2 changed files with 20 additions and 1 deletions

View File

@ -592,7 +592,8 @@ IsSymbolRefDifferenceFullyResolvedImpl(const MCAssembler &Asm,
if (!Asm.getBackend().hasReliableSymbolDifference()) {
if (!SA.isInSection() || &SecA != &SecB ||
(!SA.isTemporary() &&
FB.getAtom() != Asm.getSymbolData(SA).getFragment()->getAtom()))
FB.getAtom() != Asm.getSymbolData(SA).getFragment()->getAtom() &&
Asm.getSubsectionsViaSymbols()))
return false;
return true;
}

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@ -0,0 +1,18 @@
@ RUN: llvm-mc -n -triple thumbv7-apple-darwin10 %s -filetype=obj -o %t.obj
@ RUN: macho-dump --dump-section-data < %t.obj > %t.dump
@ RUN: FileCheck < %t.dump %s
@ When not using subsections-via-symbols, references to non-local symbols
@ in the same section can be resolved at assembly time w/o relocations.
.syntax unified
.text
.thumb
.thumb_func _foo
_foo:
ldr r3, bar
bar:
.long 0
@ CHECK: 'num_reloc', 0
@ CHECK: '_section_data', 'dff80030 00000000'