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Commit Graph

27 Commits

Author SHA1 Message Date
Daniel Dunbar
7e141838cd MC: Add dyn_cast support to MCSection.
- Of questionable utility, since in general anything which wants to do this should probably be within a target specific hook, which can rely on the sections being of the appropriate type. However, it can be useful for short term hacks.

llvm-svn: 103980
2010-05-17 21:54:26 +00:00
Chris Lattner
c1d0e3a79e switch MCSectionCOFF from a syntactic to semantic representation,
patch by Peter Housel!

llvm-svn: 103267
2010-05-07 17:17:41 +00:00
Chris Lattner
ecdad4bb0c eliminate the magic AbsoluteDebugSectionOffsets MAI hook,
which is really a property of the section being referenced.
Add a predicate to MCSection to replace it.

Yay for reduction in magic.

llvm-svn: 100367
2010-04-04 23:22:29 +00:00
Jeffrey Yasskin
b9c181ea1a Put MCSectionCOFF::Name into the MCContext instead of leaking it.
llvm-svn: 99231
2010-03-22 23:26:12 +00:00
Chris Lattner
b24982ba65 fix MCSectionELF to not leak memory, just like I did for MCSymbol.
MCSectionMachO is already fine (yay for fixed size arrays?),
MCSectionCOFF still leaks.

llvm-svn: 98537
2010-03-15 06:23:52 +00:00
Daniel Dunbar
4daaf9d3f4 Pass StringRef by value.
llvm-svn: 86251
2009-11-06 10:58:06 +00:00
Chris Lattner
8d06945fff rename TAI -> MAI, being careful not to make MAILJMP instructions :)
llvm-svn: 79777
2009-08-22 21:43:10 +00:00
Chris Lattner
5d8af49626 Rename TargetAsmInfo (and its subclasses) to MCAsmInfo.
llvm-svn: 79763
2009-08-22 20:48:53 +00:00
Bruno Cardoso Lopes
f2855aabec Change MCSectionELF to represent a section semantically instead of
syntactically as a string, very similiar to what Chris did with MachO.
The parsing support and validation is not introduced yet.

llvm-svn: 78890
2009-08-13 05:07:35 +00:00
Chris Lattner
04f74d3510 sink uniquing of sections out of MCContext into the ELF and PECOFF TLOF implementations.
MCContext no longer maintains a string -> section map.

llvm-svn: 78874
2009-08-13 00:37:15 +00:00
Chris Lattner
3e6da637f6 split MachO section handling stuff out to its out .h/.cpp file.
llvm-svn: 78576
2009-08-10 18:15:01 +00:00
Chris Lattner
cc70d578be Make the big switch: Change MCSectionMachO to represent a section *semantically*
instead of syntactically as a string.  This means that it keeps track of the 
segment, section, flags, etc directly and asmprints them in the right format.
This also includes parsing and validation support for llvm-mc and 
"attribute(section)", so we should now start getting errors about invalid 
section attributes from the compiler instead of the assembler on darwin.

Still todo: 
1) Uniquing of darwin mcsections
2) Move all the Darwin stuff out to MCSectionMachO.[cpp|h]
3) there are a few FIXMEs, for example what is the syntax to get the
   S_GB_ZEROFILL segment type?

llvm-svn: 78547
2009-08-10 01:39:42 +00:00
Chris Lattner
9e2c3aa666 sink the 'name' and 'isdirective' state out of MCSection into its derived classes.
This totally optimizes PIC16 sections by not having an 'isdirective' bit anymore!! ;-)

llvm-svn: 78517
2009-08-08 23:39:42 +00:00
Chris Lattner
2849883bd5 1. Make MCSection an abstract class.
2. Move section switch printing to MCSection virtual method which takes a
   TAI.  This eliminates textual formatting stuff from TLOF.
3. Eliminate SwitchToSectionDirective, getSectionFlagsAsString, and 
   TLOFELF::AtIsCommentChar.

llvm-svn: 78510
2009-08-08 22:41:53 +00:00
Chris Lattner
53cc0d6439 make target-specific TLOF impls (except PIC16) create target-specific
MCSection instances.

llvm-svn: 78500
2009-08-08 20:52:13 +00:00
Chris Lattner
95ca008a43 stub out PECOFF/MachO/ELF MCSection classes
llvm-svn: 78499
2009-08-08 20:50:49 +00:00
Chris Lattner
2a9d51b703 it turns out that isWeak() was basically dead anyway. Kill off SectionInfo :-/
llvm-svn: 77812
2009-08-01 21:46:23 +00:00
Chris Lattner
2f8fcad7cf fix a layering violation by moving SectionKind out to its own header.
llvm-svn: 77808
2009-08-01 21:30:49 +00:00
Chris Lattner
79e9585304 Change SectionKind to be a property that is true of a *section*, it
should have no state that is specific to particular globals in the
section.  In this case, it means the removal of the "isWeak" and
"ExplicitSection" bits.  MCSection uses the new form of SectionKind.

To handle isWeak, I introduced a new SectionInfo class, which is
SectionKind + isWeak, and it is used by the part of the code generator
that does classification of a specific global.

The ExplicitSection disappears.  It is moved onto MCSection as a new
"IsDirective" bit.  Since the Name of a section is either a section
or directive, it makes sense to keep this bit in MCSection.  Ultimately
the creator of MCSection should canonicalize (e.g.) .text to whatever
the actual section is.

llvm-svn: 77803
2009-08-01 21:11:14 +00:00
Chris Lattner
04ae6629fe All MCSections are now required to have a SectionKind.
llvm-svn: 77787
2009-08-01 18:25:49 +00:00
Chris Lattner
75b7692e66 switch off of 'Section' onto MCSection. We're not properly using
MCSection subclasses yet, but this is a step in the right direction.

llvm-svn: 77708
2009-07-31 18:48:30 +00:00
Chris Lattner
a682cb61e7 split MCSection stuff out to its own .cpp file, add a new
MCSectionWithKind subclass of MCSection.

llvm-svn: 77684
2009-07-31 17:02:00 +00:00
Chris Lattner
610dfdece7 create sections with MCSection::Create instead of Context->getOrCreateSection.
This is needed to allow polymorphic sections.

llvm-svn: 77680
2009-07-31 16:43:49 +00:00
Daniel Dunbar
6de68a2544 Move MCContext and friends to StringRef based APIs.
llvm-svn: 77251
2009-07-27 21:22:30 +00:00
Chris Lattner
f5d52813b2 add comments, privatize interface
llvm-svn: 74592
2009-07-01 06:31:49 +00:00
Daniel Dunbar
0e5051b251 Start MCAsmStreamer implementation.
llvm-svn: 74044
2009-06-24 01:03:06 +00:00
Daniel Dunbar
323218db15 Start flushing out MCContext.
- Lives inside new library lib/MC (LLVMMC.a)

llvm-svn: 74013
2009-06-23 22:01:43 +00:00