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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 | 0db1241416f2ca5fe8e81c60204025b585c45c0f (patch) | |
| tree | 7c2b21702037da8b29099f2a074ffaa57c492e64 /lib/MC | |
| parent | d18134f11621c2ff4d2bde6effb9c7115944f9fe (diff) | |
| download | external_llvm-0db1241416f2ca5fe8e81c60204025b585c45c0f.zip external_llvm-0db1241416f2ca5fe8e81c60204025b585c45c0f.tar.gz external_llvm-0db1241416f2ca5fe8e81c60204025b585c45c0f.tar.bz2 | |
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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151345 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/MC')
| -rw-r--r-- | lib/MC/MCExpr.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/MC/MCExpr.cpp b/lib/MC/MCExpr.cpp index f3a91cb..ceaecd0 100644 --- a/lib/MC/MCExpr.cpp +++ b/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; |