Commit Graph

11 Commits

Author SHA1 Message Date
Nick Lewycky 40f8f2ff24 Add support for a new extension to the .file directive:
.file filenumber "directory" "filename"

This removes one join+split of the directory+filename in MC internals. Because
bitcode files have independent fields for directory and filenames in debug info,
this patch may change the .o files written by existing .bc files.

llvm-svn: 142300
2011-10-17 23:05:28 +00:00
Benjamin Kramer 6397051ece Don't drop alignment info on local common symbols.
- On COFF the .lcomm directive has an alignment argument.
- On ELF we fall back to .local + .comm

Based on a patch by NAKAMURA Takumi.

Fixes PR9337, PR9483 and PR10128.

llvm-svn: 138976
2011-09-01 23:04:27 +00:00
Evan Cheng 5928e69d20 Rename TargetAsmBackend to MCAsmBackend; rename createAsmBackend to createMCAsmBackend.
llvm-svn: 136010
2011-07-25 23:24:55 +00:00
Cameron Zwarich fcf51fd298 Roll out r126425 and r126450 to see if it fixes the failures on the buildbots.
llvm-svn: 126488
2011-02-25 16:30:32 +00:00
Devang Patel b037383a35 Enable DebugInfo support for COFF object files.
Patch by Nathan Jeffords!

llvm-svn: 126425
2011-02-24 21:04:00 +00:00
Rafael Espindola 58ac6e1677 Add support for pushsection and popsection. Patch by Joerg Sonnenberger.
llvm-svn: 125629
2011-02-16 01:08:29 +00:00
Rafael Espindola 93e3cf0ebd Sorry for such a large commit. The summary is that only MachO cares about the
actuall addresses in a .o file, so it is better to let the MachO writer compute
it.

This is good for two reasons. First, areas that shouldn't care about
addresses now don't have access to it. Second, the layout of each section
is independent. I should use this in a subsequent commit to speed it up.

Most of the patch is just removing the section address computation. The two
interesting parts are the change on how we handle padding in the end
of sections and how MachO can get the address of a-b when a and b are in
different sections.

Since now the expression evaluation normally doesn't know the section address,
it will think that a-b needs relocation and let the MachO writer know. Once
it has computed the section addresses, it calls back the expression evaluation
with the section addresses to resolve these expressions.

The remaining problem is the handling of padding. Currently it will create
a special alignment fragment at the end. Since that fragment doesn't update
the alignment of the section, it needs the real address to be computed.

Since now the layout will not compute a-b with a and b in different sections,
the only effect that the special alignment fragment has is update the
address size of the section. This can also be done by the MachO writer.

llvm-svn: 121076
2010-12-07 00:27:36 +00:00
Rafael Espindola 0710e3771f Forgot the MCPureStreamer::EmitValue in the previous commit.
llvm-svn: 120270
2010-11-28 23:13:47 +00:00
Rafael Espindola b746531c2c Avoid code duplication in the many unsupported EmitGPRel32Value implementations.
llvm-svn: 120243
2010-11-28 15:09:24 +00:00
Rafael Espindola 8a3a7923eb Define generic 1, 2 and 4 byte pc relative relocations. They are common
and at least the 4 byte one will be needed to implement the .cfi_* directives.

llvm-svn: 120240
2010-11-28 14:17:56 +00:00
Daniel Dunbar 95d37be1a9 MC-JIT: Stub out "pure" streamer.
- No immediate use, but maybe someone feels like hacking on it.

llvm-svn: 119510
2010-11-17 16:06:47 +00:00