From 0db1241416f2ca5fe8e81c60204025b585c45c0f Mon Sep 17 00:00:00 2001 From: Jim Grosbach Date: Fri, 24 Feb 2012 05:12:18 +0000 Subject: 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 --- lib/MC/MCExpr.cpp | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'lib/MC/MCExpr.cpp') 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; -- cgit v1.1