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Author SHA1 Message Date
Chris Lattner
1f709a74f6 simplify getSectionForMergableConstant to take a SectionKind. 
llvm-svn: 77134
 2009-07-26 06:26:55 +00:00
Chris Lattner
d44b68fbeb precreate 4/8/16 byte mergable sections to simplify code. 
llvm-svn: 77133
 2009-07-26 06:16:11 +00:00
Chris Lattner
e8b2f94ce2 introduce specialized mergable const sectionkinds for elements of size 4/8/16 to 
simplify targets.

llvm-svn: 77132
 2009-07-26 06:11:33 +00:00
Chris Lattner
736f3d6eb5 improve the default impl of getSectionForMergableConstant by 
putting readonly constants in the readonly section if we have one.

llvm-svn: 77131
 2009-07-26 05:57:07 +00:00
Chris Lattner
e795c027fd make elf targets correctly handle constant pool entries that require relocations. 
llvm-svn: 77130
 2009-07-26 05:55:20 +00:00
Chris Lattner
b3d6d59c10 Rearrange all the SectionKinds and structure them into a hierarchical 
group instead of a bunch of random unrelated ideas.  Provide predicates
to categorize a SectionKind into a group, and use them instead of 
getKind() throughout the code.

This also renames a ton of SectionKinds to be more consistent and
evocative, and adds a huge number of comments on the enums so that
I will hopefully be able to remember how this stuff works long from
now.

llvm-svn: 77129
 2009-07-26 05:44:20 +00:00
Daniel Dunbar
4311f3025b Update target registration description in Writing An LLVM Backend, and add 
a mention in release notes.

llvm-svn: 77128
 2009-07-26 05:41:39 +00:00
Daniel Dunbar
fe859a94dc Sort list of targets in --version. 
llvm-svn: 77127
 2009-07-26 05:09:50 +00:00
Daniel Dunbar
a7a01acc7c Factor commonality in triple match routines into helper template for registering 
classes, and migrate existing targets over.

llvm-svn: 77126
 2009-07-26 05:03:33 +00:00
Daniel Dunbar
1c59fa86e2 Oops, forgot XCore. Sorry XCore! 
llvm-svn: 77125
 2009-07-26 04:52:45 +00:00
Daniel Dunbar
6b705e3a64 Update for API change. 
llvm-svn: 77124
 2009-07-26 04:23:03 +00:00
Chris Lattner
809a525ffa fix isReadOnly predicate to not include data that has to be 
writable because of teh dynamic linker.

llvm-svn: 77122
 2009-07-26 04:18:10 +00:00
Chris Lattner
f67024bb1c remove a dead enum case. 
llvm-svn: 77121
 2009-07-26 04:09:02 +00:00
Daniel Dunbar
5a9d56ab90 Update Triple to use StringRef/Twine based APIs. 
- This is now shorter, simpler, safer, and more efficient, what a deal.

llvm-svn: 77119
 2009-07-26 03:31:47 +00:00
Daniel Dunbar
b97f9fc3f5 Add StringRef::{slice, split}, two convenient string operations which are simple 
and efficient on a StringRef.

llvm-svn: 77117
 2009-07-26 03:18:15 +00:00
Chris Lattner
5547fd80ad put normal data into .data instead of .data.rel on elf systems. 
llvm-svn: 77116
 2009-07-26 03:06:11 +00:00
Daniel Dunbar
7917e05213 Remove unused header 
llvm-svn: 77115
 2009-07-26 02:23:52 +00:00
Daniel Dunbar
49987490c2 Kill Target specific ModuleMatchQuality stuff. 
- This was overkill and inconsistently implemented.

llvm-svn: 77114
 2009-07-26 02:22:58 +00:00
Daniel Dunbar
62e74f03c7 Add TargetRegistry::lookupTarget. 
- This is a simplified mechanism which just looks up a target based on the
   target triple, with a few additional flags.

 - Remove getClosestStaticTargetForModule, the moral equivalent is now:
     lookupTarget(Mod->getTargetTriple, true, false, ...);

 - This no longer does the fuzzy matching with target data (based on endianness
   and pointer width) that getClosestStaticTargetForModule was doing, but this
   was deemed unnecessary.

llvm-svn: 77111
 2009-07-26 02:12:58 +00:00
Chris Lattner
32fefa61d9 eliminate a pointless switch stmt. 
llvm-svn: 77110
 2009-07-26 01:44:55 +00:00
Chris Lattner
9cd489c7f1 finish simplifying DarwinTargetAsmInfo::SelectSectionForGlobal 
for now.  Make the section switching directives more consistent
by not including \n and including \t for them all.

llvm-svn: 77107
 2009-07-26 01:24:18 +00:00
Daniel Dunbar
3c3f0d5b63 Some clients rely on getName{Start,End} not returning 0, even if the length is 
0.
 - I could have swore the prev change went through a make check cycle...

llvm-svn: 77106
 2009-07-26 01:04:10 +00:00
Daniel Dunbar
518cd20f61 Rewrite getName{Start,End,Len} in terms of getName(), instead of vice-versa. 
llvm-svn: 77105
 2009-07-26 00:51:56 +00:00
Chris Lattner
b95150b65a simplify DarwinTargetAsmInfo::SelectSectionForGlobal a bit 
and make it more aggressive, we now put:

const int G2 __attribute__((weak)) = 42;

into the text (readonly) segment like gcc, previously we put
it into the data (readwrite) segment.

llvm-svn: 77104
 2009-07-26 00:51:36 +00:00
Chris Lattner
259c4e4a55 simplify some predicates, add isMergableString() 
llvm-svn: 77103
 2009-07-26 00:50:43 +00:00
Daniel Dunbar
ddf2470263 Simplify. 
llvm-svn: 77102
 2009-07-26 00:42:33 +00:00
Bob Wilson
ec256c8938 Add support for ARM Neon VREV instructions. 
Patch by Anton Korzh, with some modifications from me.

llvm-svn: 77101
 2009-07-26 00:39:34 +00:00
Daniel Dunbar
3e85b410ab Remove Value::setName(const char*, unsigned). 
llvm-svn: 77100
 2009-07-26 00:34:27 +00:00
Daniel Dunbar
c1ab70760a Remove Value::setName(const char*). 
- Split into a separate patch because there is a slight functionality change,
   it is no longer valid to call setName(0), which was equivalent to
   setName(""). I'm hoping no one depends on this...

llvm-svn: 77099
 2009-07-26 00:17:14 +00:00
Daniel Dunbar
038a7f0d35 Remove Value::{isName, getNameRef}. 
Also, change MDString to use a StringRef.

llvm-svn: 77098
 2009-07-25 23:55:21 +00:00
Chris Lattner
fda0ca90c1 make SectionKind be a first-class pod struct instead of just 
an enum.

llvm-svn: 77096
 2009-07-25 23:21:55 +00:00
Reid Kleckner
b159a2bad6 Added a test and fixed a bug in BumpPtrAllocator relating to large alignment 
values.  Hopefully this fixes PR4622.

llvm-svn: 77088
 2009-07-25 21:26:02 +00:00
Chris Lattner
15b3d2039f this is (unfortunately) several changes mixed together: 
1. Spell SectionFlags::Writeable as "Writable".
2. Add predicates for deriving SectionFlags from SectionKinds.
3. Sink ELF-specific getSectionPrefixForUniqueGlobal impl into
   ELFTargetAsmInfo.
4. Fix SectionFlagsForGlobal to know that BSS/ThreadBSS has the
   BSS bit set (the real fix for PR4619).
5. Fix isSuitableForBSS to not put globals with explicit sections
   set in BSS (which was the reason #4 wasn't fixed earlier).
6. Remove my previous hack for PR4619.

llvm-svn: 77085
 2009-07-25 18:57:34 +00:00
Chris Lattner
edbf2e64cb document some invariants. 
llvm-svn: 77084
 2009-07-25 18:11:58 +00:00
Chris Lattner
cf7cc0ed7d add the most expedient hack to fix PR4619, along with a testcase. 
Thanks to Rafael for the great example.

llvm-svn: 77083
 2009-07-25 17:57:37 +00:00
Dan Gohman
4a193ce478 Fix a few comments to say "backedge-taken count" instead of 
"trip count".

llvm-svn: 77081
 2009-07-25 16:18:38 +00:00
Dan Gohman
0781059503 SCEV objects are no longer reference-counted. 
llvm-svn: 77080
 2009-07-25 16:18:07 +00:00
Dan Gohman
cb1390f7ed Update comments to new-style syntax. 
llvm-svn: 77079
 2009-07-25 16:03:55 +00:00
Dan Gohman
c126330ef1 When attempting to sign-extend an addrec by interpreting 
the step value as unsigned, the start value and the addrec
itself still need to be treated as signed.

llvm-svn: 77078
 2009-07-25 16:03:30 +00:00
Dan Gohman
8d8a8adebf Remove spurious semicolons. 
llvm-svn: 77077
 2009-07-25 16:00:54 +00:00
Andreas Bolka
72c14efff0 Convert DOUT to DEBUG. 
llvm-svn: 77065
 2009-07-25 12:19:58 +00:00
Daniel Dunbar
d699ffc2ac Simplify JIT target selection. 
- Instead of requiring targets to define a JIT quality match function, we just
   have them specify if they support a JIT.

 - Target selection for the JIT just gets the host triple and looks for the best
   target which matches the triple and has a JIT.

llvm-svn: 77060
 2009-07-25 10:09:50 +00:00
Sanjiv Gupta
b09f01d842 Mark attributes of return insn correctly. It was being assumed safe to delete in isSafeToDelete (a thing checked-in 76281). 
llvm-svn: 77056
 2009-07-25 07:48:53 +00:00
Chris Lattner
06449afe92 remove this test. It is currently failing because we now emit the string 
on darwin with ".cstring" instead of ".section  __TEXT,__cstring".  They
are the same and the former is better.  Remove this because this is no longer
magic pixie dust in the frontend.

llvm-svn: 77055
 2009-07-25 07:31:51 +00:00
Chris Lattner
021a977857 eventually we should describe string options in the data structures section 
llvm-svn: 77054
 2009-07-25 07:22:20 +00:00
Chris Lattner
5092df83f7 minor tweaks. 
llvm-svn: 77053
 2009-07-25 07:16:59 +00:00
Daniel Dunbar
284fe09fe4 Add new helpers for registering targets. 
- Less boilerplate == good.

llvm-svn: 77052
 2009-07-25 06:49:55 +00:00
Daniel Dunbar
9f50ab3c49 Finish migrating VMCore to StringRef/Twine based APIs. 
llvm-svn: 77051
 2009-07-25 06:02:13 +00:00
Daniel Dunbar
794f5b8325 Ok, "most clients should be unaffected" was a lie. Add notes on upgrading. 
llvm-svn: 77050
 2009-07-25 05:26:53 +00:00
Daniel Dunbar
251177c96e Initial update to VMCore to use Twines for string arguments. 
- The only meat here is in Value.{h,cpp} the rest is essential 'const
   std::string &' -> 'const Twine &'.

llvm-svn: 77048
 2009-07-25 04:41:11 +00:00