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ARM Thumb symbol references in assembly need the low bit set.

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Add support for a missed case when the symbols in a difference
expression are in the same section but not the same fragment.

rdar://10924681

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151345 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2012-02-24 05:12:18 +00:00
parent d18134f116
commit 0db1241416
1 changed files with 5 additions and 0 deletions
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5
lib/MC/MCExpr.cpp
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@ -357,6 +357,11 @@ static void AttemptToFoldSymbolOffsetDifference(const MCAssembler *Asm,
if (Addrs && (&SecA != &SecB))
Addend += (Addrs->lookup(&SecA) - Addrs->lookup(&SecB));
// Pointers to Thumb symbols need to have their low-bit set to allow
// for interworking.
if (Asm->isThumbFunc(&SA))
Addend |= 1;
// Clear the symbol expr pointers to indicate we have folded these
// operands.
A = B = 0;