Kevin Enderby 8c9aa922a9 This adds a Darwin x86_64 relocation encoding for a subtraction expression ... where both symbols are "local", that is non-external symbols, and there is no "base" for the symbols used in the expression, that is the section has no non-temporary symbols. This case looks like this: % cat local_reloc_A-B.s .long 0 LB: .long 1 .long LA - LB - 4 .long 2 LA: .long 3 which llvm-mc will not encode without this patch, generates a "unsupported local relocations in difference" error, but the Darwin assembler will encode with relocation entries like this: % otool -rv a.out l.out a.out: Relocation information (__TEXT,__text) 2 entries address pcrel length extern type scattered symbolnum/value 00000008 False long False SUB False 1 (__TEXT,__text) 00000008 False long False UNSIGND False 1 (__TEXT,__text) which is very similar to what is encoded when the symbols don't have the leading 'L' and they are not temporary symbols. Which llvm-mc and the Darwin assembler will encoded like this: Relocation information (__TEXT,__text) 2 entries address pcrel length extern type scattered symbolnum/value 00000008 False long True SUB False B 00000008 False long True UNSIGND False A This is the missing relocation encoding needed to allow the Mach-O x86 Dwarf file and line table to be emitted. So this patch also removes the TODO from the if() statement in MCMachOStreamer::Finish() that didn't call MCDwarfFileTable::Emit() for 64-bit targets. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115389 91177308-0d34-0410-b5e6-96231b3b80d8		2010-10-02 00:13:41 +00:00
..
Analysis	Let FE mark a variable as artificial variable.	2010-09-29 23:07:21 +00:00
Archive
AsmParser	Pacify a noisy compiler, and sink this variable declaration closer to its uses.	2010-09-30 21:04:13 +00:00
Bitcode	Fix spelling.	2010-09-28 18:54:43 +00:00
CodeGen	Drop the use of LiveInterval::iterator and the LiveRange class in	2010-10-01 23:52:27 +00:00
CompilerDriver
ExecutionEngine
Linker
MC	This adds a Darwin x86_64 relocation encoding for a subtraction expression	2010-10-02 00:13:41 +00:00
Support	Grow BumpPtrAllocator's slab size dynamically if we allocated many slabs. This	2010-09-30 16:18:28 +00:00
System	Add an explicit initialization to work around what appears to be a valgrind	2010-09-30 23:56:49 +00:00
Target	PrintSpecial() can go away now.	2010-10-01 23:27:48 +00:00
Transforms	Now that the profitable bits of EnableFullLoadPRE have been enabled by default, rip out the remainder.	2010-10-01 20:02:55 +00:00
VMCore	Attempt to outwit overly smart compiler.	2010-10-01 00:21:24 +00:00
Makefile