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| author | Jim Grosbach <grosbach@apple.com> | 2012-02-24 05:12:18 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2012-02-24 05:12:18 +0000 |
| commit | 213039a5a1ed1528663816ae5349cf951e398972 (patch) | |
| tree | 05452589a279cf4b45815f5573fb3419a7b839ff /llvm/lib/MC/MCExpr.cpp | |
| parent | 0e615684bbefb24ef850afc79bc326682cb1615b (diff) | |
| download | bcm5719-llvm-213039a5a1ed1528663816ae5349cf951e398972.tar.gz bcm5719-llvm-213039a5a1ed1528663816ae5349cf951e398972.zip | |
ARM Thumb symbol references in assembly need the low bit set.
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
llvm-svn: 151345
Diffstat (limited to 'llvm/lib/MC/MCExpr.cpp')
| -rw-r--r-- | llvm/lib/MC/MCExpr.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/MC/MCExpr.cpp b/llvm/lib/MC/MCExpr.cpp index f3a91cbd5ef..ceaecd04103 100644 --- a/llvm/lib/MC/MCExpr.cpp +++ b/llvm/lib/MC/MCExpr.cpp @@ -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; |
