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Commit Graph

176 Commits

Author SHA1 Message Date
Chris Lattner
ef7178406b Reimplement LinkFunctionProtos in terms of GetLinkageResult. This fixes
the second half of link-global-to-func.ll and causes some minor changes in
messages.

There are two TODOs here.  First, this causes a regression in 
2008-07-06-AliasWeakDest.ll, which is now failing (so I xfailed it).  Anton,
I would really appreciate it if you could take a look at this.  It should be
a matter of adding proper alias support to GetLinkageResult, and was probably
already a latent bug that would manifest with globals.

The second todo is to reimplement LinkAlias in the same pattern as 
function and global linking.  This should be pretty straight-forward for 
someone who knows aliases, but isn't a requirement for correctness.

llvm-svn: 53548
2008-07-14 07:23:24 +00:00
Chris Lattner
0b95d5f57d don't do any linkage, not even type resolution, of symbols that have
internal linkage.

llvm-svn: 53547
2008-07-14 06:52:19 +00:00
Chris Lattner
d31cacb5d6 implement linking of globals to functions, in one direction
(replacing a function with a global).  This is needed when building
llvm itself with LTO on darwin, because of the EXPLICIT_SYMBOL hack
in lib/system/DynamicLibrary.cpp.

Implementation of linking the other way will need to wait for a 
cleanup of LinkFunctionProtos.

llvm-svn: 53546
2008-07-14 06:49:45 +00:00
Chris Lattner
c68c953e71 wrap long lines, remove some code from a non-assert build.
llvm-svn: 53545
2008-07-14 05:52:33 +00:00
Chris Lattner
6d7c5fa8dc The source and dest of an alias are *not* required to have the same type,
though that would be nice and make sense :).  Patch by Nathan Keynes!

llvm-svn: 53387
2008-07-10 01:09:33 +00:00
Dan Gohman
c97817aac3 Make DenseMap's insert return a pair, to more closely resemble std::map.
llvm-svn: 53177
2008-07-07 17:46:23 +00:00
Anton Korobeynikov
47e1a76977 Add convenient helper for checking whether global is weak in linker sense
having weak or linkonce or common or extweak LLVM linkage.

llvm-svn: 53158
2008-07-05 23:48:30 +00:00
Anton Korobeynikov
302db24cf1 Override weak stuff during linking of aliases. This fixes PR2463.
llvm-svn: 53156
2008-07-05 23:33:22 +00:00
Anton Korobeynikov
3593f9f7f1 Properly link alias and function decls. This fixes PR2146
llvm-svn: 53154
2008-07-05 23:03:21 +00:00
Chris Lattner
f40ef5f964 when linking globals, make sure to preserve the address space of the global.
llvm-svn: 52810
2008-06-27 03:10:24 +00:00
Chris Lattner
9ab7735924 Fix an error handling redefinition of linkonce functions where the
types differ.  Patch by Nathan Keynes!

llvm-svn: 52527
2008-06-20 05:29:39 +00:00
Chris Lattner
468adb09d7 Add a missing ~ (dtor became ctor) which caused crashes on a bunch of stuff.
llvm-svn: 52374
2008-06-16 23:06:51 +00:00
Chris Lattner
6782f56054 stop making PATypeHolder's so crazily.
llvm-svn: 52364
2008-06-16 21:17:12 +00:00
Chris Lattner
3dfc439a87 use a real associative container for type association instead of using
a vector with a linear search.  This speeds up the linking testcase 
in PR1860 from 0.965s to 0.385s on my system.

llvm-svn: 52357
2008-06-16 21:00:18 +00:00
Chris Lattner
f87729aa1f bail out sooner if we have two concrete but different types.
llvm-svn: 52351
2008-06-16 20:03:01 +00:00
Chris Lattner
896c38c96a simplify some code.
llvm-svn: 52350
2008-06-16 19:55:40 +00:00
Chris Lattner
fe3ddf06a8 Apply a patch from Nathan Keynes, which speeds up llvm-link on
the testcases in PR1860 from taking more than 1 hour (when I killed it)
to taking 1s.

llvm-svn: 52347
2008-06-16 19:48:08 +00:00
Chris Lattner
1a604edf16 handle vectors. Any integers that got here would necessarily be different already.
llvm-svn: 52341
2008-06-16 18:27:53 +00:00
Chris Lattner
c24aba4724 Simplify ResolveTypes by pulling the null case out into the one
client that cares and simplifying its control flow.

Remove the DestST argument to ResolveTypes and RecursiveResolveTypes*
which are dead now.

llvm-svn: 52340
2008-06-16 18:19:05 +00:00
Chris Lattner
cebf7d79b3 simplify RecursiveResolveTypes and ResolveTypes by pulling the naming out of
ResolveTypes into the one place that needs it.

llvm-svn: 52338
2008-06-16 18:11:40 +00:00
Chris Lattner
96dec66124 use 'continue' to make the function linker simpler. When linking a strong
function into a weak function, zap the weak function body so that the
strong one overrides it.  This fixes PR2410

llvm-svn: 52135
2008-06-09 07:47:34 +00:00
Chris Lattner
4c99f72771 minor changes to short circuit the 'no linkage' case earlier for
function bodies.  We now don't try to unify types or handling type
mismatches if when linking an internal foo to an external foo.

llvm-svn: 52134
2008-06-09 07:36:11 +00:00
Chris Lattner
744e896c06 simplify function visibility handling.
llvm-svn: 52133
2008-06-09 07:25:28 +00:00
Duncan Sands
fa995d7cc5 Factor code to copy global value attributes like
the section or the visibility from one global
value to another: copyAttributesFrom.  This is
particularly useful for duplicating functions:
previously this was done by explicitly copying
each attribute in turn at each place where a
new function was created out of an old one, with
the result that obscure attributes were regularly
forgotten (like the collector or the section).
Hopefully now everything is uniform and nothing
is forgotten.

llvm-svn: 51567
2008-05-26 19:58:59 +00:00
Gabor Greif
48ffb6c7dc Fix a bunch of 80col violations that arose from the Create API change. Tweak makefile targets to find these better.
llvm-svn: 51143
2008-05-15 10:04:30 +00:00
Dale Johannesen
768b6f281e Add CommonLinkage; currently tentative definitions
are represented as "weak", but there are subtle differences
in some cases on Darwin, so we need both.  The intent
is that "common" will behave identically to "weak" unless
somebody changes their target to do something else.
No functional change as yet.

llvm-svn: 51118
2008-05-14 20:12:51 +00:00
Anton Korobeynikov
0f39a96feb Fix linking of internal aliases
llvm-svn: 50950
2008-05-10 14:41:43 +00:00
Anton Korobeynikov
ddb93e7a02 Turn StripPointerCast() into a method
llvm-svn: 50836
2008-05-07 22:54:15 +00:00
Anton Korobeynikov
ef80f5dbca If weak GlobalVariable was bitcast'ed to different type during linking
we will need to strip all casts for intializer lookup.

llvm-svn: 50776
2008-05-06 22:52:54 +00:00
Owen Anderson
8aaa632351 Revert r49614. As Dan pointed out, some of these aren't correct.
llvm-svn: 49657
2008-04-14 17:38:21 +00:00
Owen Anderson
b54defaff0 Replace calls of the form V1->setName(V2->getName()) with V1->takeName(V2),
which is significantly more efficient.

llvm-svn: 49614
2008-04-13 19:15:17 +00:00
Gabor Greif
6c6b8a57f3 API changes for class Use size reduction, wave 1.
Specifically, introduction of XXX::Create methods
for Users that have a potentially variable number of
Uses.

llvm-svn: 49277
2008-04-06 20:25:17 +00:00
Chris Lattner
d141d16ed7 Change the MemoryBuffer::getFile* methods to take just a pointer to the
start of a filename, not a filename+length.  All clients can produce a
null terminated name, and the system api's require null terminated 
strings anyway.

llvm-svn: 49041
2008-04-01 18:04:03 +00:00
Anton Korobeynikov
a69bd8b0e6 Ultimately resolve aliases during linking, if possible
llvm-svn: 48259
2008-03-11 22:51:09 +00:00
Anton Korobeynikov
da7746cf43 Fix thinko: alias always defines new symbol. Even is aliasee itself is undefined.
llvm-svn: 48203
2008-03-11 00:24:53 +00:00
Anton Korobeynikov
6d98df2a25 Add sanity checks
llvm-svn: 48184
2008-03-10 22:36:53 +00:00
Anton Korobeynikov
ada9acedd4 Typo: 'function' => 'alias'
llvm-svn: 48183
2008-03-10 22:36:35 +00:00
Anton Korobeynikov
25b1121a28 Syntactic sugar'ify stuff :)
llvm-svn: 48182
2008-03-10 22:36:08 +00:00
Anton Korobeynikov
4a897017af Always run 'make check' :) Fix fallout from prev. commit: query for possible
alias destination only if we don't have anything to link to

llvm-svn: 48181
2008-03-10 22:35:31 +00:00
Anton Korobeynikov
24360dead3 Make error messages to have common style
llvm-svn: 48180
2008-03-10 22:34:46 +00:00
Anton Korobeynikov
a17ceb586c Properly link globals with aliases
llvm-svn: 48179
2008-03-10 22:34:28 +00:00
Anton Korobeynikov
d33dd5acd2 Remove the LinkGlobal weirderness in common linking phase.
llvm-svn: 48177
2008-03-10 22:33:53 +00:00
Anton Korobeynikov
7ce7d7173a Typo
llvm-svn: 48176
2008-03-10 22:33:22 +00:00
Ted Kremenek
b05e945be4 Fix some compilation errors on msvc:
- "Redefinition of I" (iterator masks previous definition)
- include missing header file

Patch by Argiris Kirtzidis!

llvm-svn: 48115
2008-03-09 18:32:50 +00:00
Anton Korobeynikov
4ce7b6011b Clarify some important bits
llvm-svn: 48010
2008-03-07 18:34:50 +00:00
Anton Korobeynikov
d33aa31d4c Small cleanup: propagate thread-localness via generic routine.
No functionality change.

llvm-svn: 48009
2008-03-07 18:32:18 +00:00
Anton Korobeynikov
b66feb845f Missed patch from my last commit
llvm-svn: 47977
2008-03-05 23:21:39 +00:00
Anton Korobeynikov
d4e00c2d59 Resolve aliases to aliasees, where possible
llvm-svn: 47975
2008-03-05 23:08:47 +00:00
Anton Korobeynikov
76b5b2d294 Handle functions as targets during linking of aliases as well
llvm-svn: 47974
2008-03-05 23:08:16 +00:00
Anton Korobeynikov
f2f352ec48 Try hard to link aliases. Checks can be too strict by now.
llvm-svn: 47968
2008-03-05 22:22:46 +00:00