Commit Graph

664 Commits

Author SHA1 Message Date
Chris Lattner 31b05d0ee3 wrap long line
llvm-svn: 25139
2006-01-07 06:12:07 +00:00
Chris Lattner a551033ea8 Fix a nasty bug that was causing miscompilation of global variables
on big endian 32-bit targets in some cases (e.g. PPC).  This fixes several
PPC JIT failures.

llvm-svn: 23914
2005-10-23 23:54:56 +00:00
Chris Lattner ac23014355 Shrinkify to match llc
llvm-svn: 23912
2005-10-23 22:39:01 +00:00
Jim Laskey 27d628dfc9 Add help support for -mcpu and -mattr.
llvm-svn: 23222
2005-09-02 19:27:43 +00:00
Jim Laskey 19058c3989 1. Use SubtargetFeatures in llc/lli.
2. Propagate feature "string" to all targets.

3. Implement use of SubtargetFeatures in PowerPCTargetSubtarget.

llvm-svn: 23192
2005-09-01 21:38:21 +00:00
Andrew Lenharth 27f1e26db7 one cannot allocate a global, until one is done initializing the global pointers
llvm-svn: 22568
2005-08-01 17:35:40 +00:00
Jeff Cohen 546fd5944e Keep tabs and trailing spaces out.
llvm-svn: 22565
2005-07-30 18:33:25 +00:00
Andrew Lenharth 0940218cca support near allocations for the JIT
llvm-svn: 22554
2005-07-29 23:40:16 +00:00
Andrew Lenharth 3444cf5128 Like constants, globals on some platforms are GOT relative. This means they have to be allocated
near the GOT, which new doesn't do.  So break out the allocate into a new function.

Also move GOT index handling into JITResolver.  This lets it update the mapping when a Lazy
function is JITed.  It doesn't managed the table, just the mapping.  Note that this is
still non-ideal, as any function that takes a function address should also take a GOT
index, but that is a lot of changes.  The relocation resolve process updates any GOT entry
it sees is out of date.

llvm-svn: 22537
2005-07-28 12:44:13 +00:00
Jeff Cohen 5f4ef3c5a8 Eliminate all remaining tabs and trailing spaces.
llvm-svn: 22523
2005-07-27 06:12:32 +00:00
Chris Lattner 54d27a49da fix a warning on 32-bit systems
llvm-svn: 22513
2005-07-25 23:42:58 +00:00
Andrew Lenharth 940b07c7fa the JIT memory manager will construct a GOT if you want it too. Also, it places the constants in the allocated memory, rather than a malloc area
llvm-svn: 22497
2005-07-22 20:48:12 +00:00
Chris Lattner 05732c86d4 count the number of relocations performed.
llvm-svn: 22480
2005-07-20 16:29:20 +00:00
Reid Spencer 79876f52aa For PR540:
This patch completes the changes for making lli thread-safe. Here's the list
of changes:
* The Support/ThreadSupport* files were removed and replaced with the
  MutexGuard.h file since all ThreadSupport* declared was a Mutex Guard.
  The implementation of MutexGuard.h is now based on sys::Mutex which hides
  its implementation and makes it unnecessary to have the -NoSupport.h and
  -PThreads.h versions of ThreadSupport.

* All places in ExecutionEngine that previously referred to "Mutex" now
  refer to sys::Mutex

* All places in ExecutionEngine that previously referred to "MutexLocker"
  now refer to MutexGuard (this is frivolous but I believe the technically
  correct name for such a class is "Guard" not a "Locker").

These changes passed all of llvm-test. All we need now are some test cases
that actually use multiple threads.

llvm-svn: 22404
2005-07-12 15:51:55 +00:00
Chris Lattner 8ffb66111c fix long lines
llvm-svn: 22369
2005-07-11 02:49:16 +00:00
Andrew Lenharth 9144ec4764 core changes for varargs
llvm-svn: 22254
2005-06-18 18:34:52 +00:00
Chris Lattner 646c0f0234 Fix a really horrible problem that causes the JIT to miscompile any program
that use 64-bit integers on 32-bit hosts.

llvm-svn: 21886
2005-05-12 06:01:28 +00:00
Chris Lattner ec7773e9e8 Make the stub functions be tail calls
llvm-svn: 21738
2005-05-06 06:48:54 +00:00
Misha Brukman 5191b4b2d0 Convert tabs to spaces
llvm-svn: 21440
2005-04-22 04:08:30 +00:00
Misha Brukman 10468d8a3c Remove trailing whitespace
llvm-svn: 21422
2005-04-21 22:55:34 +00:00
Misha Brukman 91fb9ab60b * Remove trailing whitespace
* Convert tabs to spaces

llvm-svn: 21421
2005-04-21 22:43:08 +00:00
Misha Brukman 835702a094 Remove trailing whitespace
llvm-svn: 21420
2005-04-21 22:36:52 +00:00
Chris Lattner ed5189da51 Add support for targets that require stubs for external functions.
llvm-svn: 21313
2005-04-18 01:44:27 +00:00
Chris Lattner 7b9020a059 Fix the missing symbols problem Bill was hitting. Patch contributed by
Bill Wendling!!

llvm-svn: 20649
2005-03-17 15:38:16 +00:00
Chris Lattner 531f9e92d4 This mega patch converts us from using Function::a{iterator|begin|end} to
using Function::arg_{iterator|begin|end}.  Likewise Module::g* -> Module::global_*.

This patch is contributed by Gabor Greif, thanks!

llvm-svn: 20597
2005-03-15 04:54:21 +00:00
Chris Lattner 7f32c4aa36 Use const iterators where possible. Patch by Evan Jones!
llvm-svn: 20354
2005-02-27 19:06:10 +00:00
Chris Lattner ec3f094489 Fix problems running the HowToUseJIT on powerpc, and probably problems with
ANY program that does not have all functions internalized.

llvm-svn: 20258
2005-02-20 18:43:35 +00:00
Chris Lattner 45a6a18393 This is no longer needed. Global variables with undef initializers can be
initialized to anything, including garbage.

llvm-svn: 20010
2005-02-02 20:50:50 +00:00
Chris Lattner 28edd69eb4 If the interpreter tries to execute an external function, kill it. Of course
since we are dirty, special case __main.  This should fix the infinite loop
horrible stuff that happens on linux-alpha when configuring llvm-gcc.  It
might also help cygwin, who knows??

llvm-svn: 19729
2005-01-21 19:59:37 +00:00
Chris Lattner cebb964fef Improve compatiblity with HPUX on Itanium, patch by Duraid Madina
llvm-svn: 19586
2005-01-16 01:31:31 +00:00
Chris Lattner 5326f35715 Rework constant pool handling so that function constant pools are no longer
leaked to the system.  Now they are destroyed with the JITMemoryManager is
destroyed.

llvm-svn: 19434
2005-01-10 18:23:22 +00:00
Chris Lattner 4588542d39 Silence warnings
llvm-svn: 19392
2005-01-08 20:13:44 +00:00
Chris Lattner df1f152420 Silence VS warnings.
llvm-svn: 19391
2005-01-08 20:13:19 +00:00
Chris Lattner fa66dc7852 Silence VS warnings.
llvm-svn: 19390
2005-01-08 20:07:03 +00:00
Chris Lattner feeab9f753 Silence VS warnings
llvm-svn: 19389
2005-01-08 20:05:34 +00:00
Reid Spencer cbd791c5e7 Be double sure about including sys/stat.h by wrapping the inclusion in
an "#if defined(HAVE_SYS_STAT_H)".

llvm-svn: 19069
2004-12-20 06:34:02 +00:00
Reid Spencer 181cf4ce17 Move the #include of sys/stat.h inside the linux "hack" for the stat
family of functions so it gets noticed if we ever remove this.

llvm-svn: 19022
2004-12-17 19:09:16 +00:00
Reid Spencer 0575a63578 Only #include sys/stat.h if we're on linux where we have the PR274 problem.
llvm-svn: 19020
2004-12-17 18:56:29 +00:00
Reid Spencer 53bd3d0b1a Get rid of some leaks found by VC leak detector.
Patch contributed by Morten Ofsted.

llvm-svn: 18889
2004-12-13 16:04:04 +00:00
Chris Lattner a34f9da4b4 Properly implement a fix for PR475
llvm-svn: 18537
2004-12-05 07:19:16 +00:00
Chris Lattner 1a0117f641 Revert this patch, it broke a ton of programs.
llvm-svn: 18535
2004-12-05 06:59:59 +00:00
Alkis Evlogimenos 8c5affedd1 Fix PR475.
llvm-svn: 18515
2004-12-05 01:51:20 +00:00
Chris Lattner 87a756f09f Remove darwin specific majik
llvm-svn: 18467
2004-12-03 23:02:55 +00:00
Chris Lattner 5a4dc8ca5a Do not look here for elegance.
This fixes the ugly darwin "cannot find symbols starting with __" issue.

Thanks for Owen/resistor for testing this out for me.

llvm-svn: 18454
2004-12-03 07:16:51 +00:00
Chris Lattner 9a43d294b9 Remove unneeded cast.
llvm-svn: 18405
2004-12-01 17:13:05 +00:00
Chris Lattner 56bac30683 Fix the JIT when being used from llvm-db
llvm-svn: 18391
2004-11-30 17:41:49 +00:00
Reid Spencer 70e37278cb Use System/DynamicLibrary instead of Support/DynamicLinker
llvm-svn: 18357
2004-11-29 14:11:29 +00:00
Chris Lattner c5753055ea Rename Emitter.cpp -> JITEmitter.cpp
llvm-svn: 18132
2004-11-22 22:00:25 +00:00
Chris Lattner 88dc917c72 Fix the FIXME, nuke the JIT specific forceCompilationOf method.
llvm-svn: 18131
2004-11-22 21:54:35 +00:00
Chris Lattner 213e39ee7c These methods are obsolete
llvm-svn: 18129
2004-11-22 21:48:33 +00:00
Chris Lattner 50c2e117b3 Support targets that require stubs for external functions better
llvm-svn: 18098
2004-11-22 07:24:43 +00:00
Chris Lattner 9de8e2225f Clean up DEBUG output
llvm-svn: 18081
2004-11-21 03:44:32 +00:00
Chris Lattner 65f6638822 Allow targets to avoid emitting a stub for EVERY lazily resolved call. In
most cases (e.g. direct calls) no stub is needed.

llvm-svn: 18080
2004-11-21 03:37:42 +00:00
Chris Lattner 60d815a18b Implement relocation support by adding a target independent resolver interface.
llvm-svn: 18069
2004-11-20 23:57:07 +00:00
Chris Lattner 374301ecb9 This method does not exist any longer.
llvm-svn: 18061
2004-11-20 23:51:03 +00:00
Chris Lattner 6cf7a43603 Add getCurrentPCOffset() and addRelocation() methods.
Add stub support for relocations to finishFunction

llvm-svn: 18035
2004-11-20 03:46:14 +00:00
Chris Lattner b7b78508a8 Add accessor
llvm-svn: 18030
2004-11-20 03:11:07 +00:00
Chris Lattner c27389815d Match change in MachineCodeEmitter prototype.
llvm-svn: 18009
2004-11-19 20:56:46 +00:00
Chris Lattner d215992b35 This is a horrible hack to work around libstdc++ bugs :(
llvm-svn: 17988
2004-11-19 08:44:07 +00:00
Chris Lattner 1edd79a1bc Now that we have ghost linkage, we can force resolution of external symbols
immediately instead of lazily.

In this program, for example:

int main() {
  printf("hello world\n");
  printf("hello world\n");
  printf("hello world\n");
  printf("hello world\n");
}

We used to have to go through compilation callback 4 times (once for each
call to printf), now we don't go to it at all.

Thanks to Misha for noticing this, and for adding the initial ghost linkage
patches.

llvm-svn: 17864
2004-11-15 23:20:04 +00:00
Chris Lattner b264f7f428 There is no reason to try to materialize the function from bytecode if it
already has been.  This may be a small speedup.

llvm-svn: 17863
2004-11-15 23:18:09 +00:00
Misha Brukman 624685d9a1 Implement ExecutionEngine::freeMachineCodeForFunction()
llvm-svn: 17601
2004-11-07 23:58:46 +00:00
Brian Gaeke 9a51b8ca7c When emitting debug msgs for function stubs, don't truncate the
printed pointer value if sizeof(unsigned) != pointer size.  Instead,
use uintptr_t.

llvm-svn: 17338
2004-10-29 18:22:45 +00:00
Reid Spencer c833eddfe6 Fix library name.
llvm-svn: 17307
2004-10-28 05:37:24 +00:00
Reid Spencer 57cbe39d1e Change Library Names Not To Conflict With Others When Installed
llvm-svn: 17286
2004-10-27 23:18:45 +00:00
Reid Spencer f9676539bb Changes to support rand48 tests
llvm-svn: 17284
2004-10-27 23:03:44 +00:00
Chris Lattner d7a7a3f42f Fix the interpreter crash that Michael McCracken found
llvm-svn: 17239
2004-10-26 05:35:14 +00:00
Misha Brukman 37a7102ccb Use cleaner quoting and eliminate blank space
llvm-svn: 17174
2004-10-22 23:35:57 +00:00
Reid Spencer c1c320c335 We won't use automake
llvm-svn: 17155
2004-10-22 03:35:04 +00:00
Reid Spencer 6a11a75f31 Initial automake generated Makefile template
llvm-svn: 17136
2004-10-18 23:55:41 +00:00
Chris Lattner 98e541457b Add support for unreachable
llvm-svn: 17056
2004-10-16 18:21:33 +00:00
Chris Lattner 61753bf847 Add support for undef
llvm-svn: 17055
2004-10-16 18:19:26 +00:00
Reid Spencer ace94df71f Update to reflect changes in Makefile rules.
llvm-svn: 16950
2004-10-13 11:46:52 +00:00
Reid Spencer b84cbf2725 Initial version of automake Makefile.am file.
llvm-svn: 16885
2004-10-10 20:43:57 +00:00
Reid Spencer 6614946443 Convert code to compile with vc7.1.
Patch contributed by Paolo Invernizzi. Thanks Paolo!

llvm-svn: 16368
2004-09-15 17:06:42 +00:00
Reid Spencer f7948483d2 Simplify the sys::Memory interface per Chris' request.
llvm-svn: 16318
2004-09-13 22:38:11 +00:00
Reid Spencer 96019262ca Convert the Emitter to use the lib/System "Memory" interface instead of the
old SystemUtils.h interface to allocate RWX blocks of memory.

llvm-svn: 16286
2004-09-11 04:31:03 +00:00
Reid Spencer 7c16caa336 Changes For Bug 352
Move include/Config and include/Support into include/llvm/Config,
include/llvm/ADT and include/llvm/Support. From here on out, all LLVM
public header files must be under include/llvm/.

llvm-svn: 16137
2004-09-01 22:55:40 +00:00
Chris Lattner 3361c5da6f Add a special case for argc,argv
llvm-svn: 15802
2004-08-16 01:07:04 +00:00
Chris Lattner b1cad0b3bc Don't pass too many arguments into runFunction
llvm-svn: 15801
2004-08-16 01:05:35 +00:00
Chris Lattner 3f9d4ed43d Finally, add support for calling arbitrary non-varargs functions.
llvm-svn: 15799
2004-08-16 00:14:18 +00:00
Chris Lattner 58d0582548 Handle all nullary functions, of any valid return type.
llvm-svn: 15798
2004-08-15 23:53:06 +00:00
Chris Lattner 23f7c98016 Fine, go all of the way and check that the argument types are correct as well.
llvm-svn: 15797
2004-08-15 23:39:59 +00:00
Chris Lattner 8f8f72f21b These only really work if returning int or void
llvm-svn: 15796
2004-08-15 23:34:48 +00:00
Chris Lattner 47380e3ba0 Handle zero arg function case
llvm-svn: 15794
2004-08-15 23:31:43 +00:00
Chris Lattner a349c03347 Simplify code a bit, print error message always instead of asserting.
llvm-svn: 15793
2004-08-15 23:29:50 +00:00
Alkis Evlogimenos 832437255d Stop using getValues().
llvm-svn: 15487
2004-08-04 08:44:43 +00:00
Reid Spencer 6a0fd73bee bug 122:
- Replace ConstantPointerRef usage with GlobalValue usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14951
2004-07-18 00:41:27 +00:00
Chris Lattner 5c4de70691 Fixes for PR341
llvm-svn: 14848
2004-07-15 02:51:32 +00:00
Chris Lattner 60a7dd16c4 Fixes for PR341
llvm-svn: 14847
2004-07-15 02:51:31 +00:00
Chris Lattner 802cffd928 The cleanup is done. Update comment.
llvm-svn: 14761
2004-07-11 08:24:02 +00:00
Chris Lattner c4e6bb5f9f Make add constantexprs work with all types, fixing the regressions from last night
llvm-svn: 14760
2004-07-11 08:01:11 +00:00
Chris Lattner 8267b7e17d Goodbye macro hell, hello nice clean simple extensible code. This change
also gives the JIT the ability to dynamically load targets. e.g.

lli -load libparisc.so -march=parisc foo.bc

llvm-svn: 14750
2004-07-11 04:02:06 +00:00
Reid Spencer 1a4152fa2c Make error message consistent with the rest of LLVM by saying that bytecode
is read, not parsed.

llvm-svn: 14677
2004-07-07 21:20:28 +00:00
Reid Spencer 6967cd54f3 Fix for bug 391.
Improve exeception handling around bcreader invocations.

llvm-svn: 14674
2004-07-07 21:01:38 +00:00
Reid Spencer eb04d9bcb4 Add #include <iostream> since Value.h does not #include it any more.
llvm-svn: 14622
2004-07-04 12:19:56 +00:00
Chris Lattner bcdadf3765 Move the IntrinsicLowering header into the CodeGen directory, as per PR346
llvm-svn: 14266
2004-06-20 07:49:54 +00:00
Chris Lattner 4c96b0883f Move the IntrinsicLowering header into the CodeGen directory
llvm-svn: 14265
2004-06-20 07:46:18 +00:00
Chris Lattner 6b7275996c Rename Type::PrimitiveID to TypeId and ::getPrimitiveID() to ::getTypeID()
llvm-svn: 14201
2004-06-17 18:19:28 +00:00
Brian Gaeke 3b9474ecd7 Add int ferror(FILE *)
llvm-svn: 14194
2004-06-16 02:56:40 +00:00
Chris Lattner a32ca86c21 Implement PR315: abort, don't warn, when missing external functions encountered
This fixes some critical problems building libstdc++ on cygwin.

llvm-svn: 13934
2004-06-01 21:49:00 +00:00
Chris Lattner 0bd7797446 Use the SystemUtils.h file to do our dirty work.
llvm-svn: 13868
2004-05-28 00:57:27 +00:00
Chris Lattner cef00ec3da Remove long unused #includes
llvm-svn: 13857
2004-05-27 21:25:44 +00:00
Chris Lattner cb9ccac8a7 These #includes are long dead
llvm-svn: 13856
2004-05-27 21:24:38 +00:00
Chris Lattner 8232621124 This code is a real mess, but at least get the JIT *building* on platforms
(such as plan 9) without mmap.  Of course it won't RUN... but that's another
step.  :)

llvm-svn: 13839
2004-05-27 18:03:56 +00:00
Reid Spencer 7b8a3b550a Get rid of a wart: useless getFILE function is now a cast macro.
llvm-svn: 13747
2004-05-25 08:46:15 +00:00
Brian Gaeke 2d7efbbb93 Generalize the strlen size_t hack, for the benefit of the other external
functions with wrappers that either take or return size_ts.

llvm-svn: 13296
2004-05-01 06:42:15 +00:00
Brian Gaeke ad373c8576 Go back to the interpreter main loop after performing intrinsic lowering,
because 1) the first instruction might not be a call site, and
2) CS and SF.Caller were not getting set to point to the new call site
anyway (resulting in a crash on e.g. call %llvm.memset).

llvm-svn: 13122
2004-04-23 18:05:28 +00:00
Brian Gaeke 0c4fb283f3 Implement emitWordAt() for the JIT emitter.
llvm-svn: 13118
2004-04-23 17:11:14 +00:00
Chris Lattner 2b2d7a99be Add support for the select instruction
llvm-svn: 13076
2004-04-20 16:43:21 +00:00
Brian Gaeke aec2bcd63b Add a TargetData to the PassManager regardless of the TargetMachine.
This should unbreak the Sparc JIT again.

llvm-svn: 12949
2004-04-14 17:45:52 +00:00
Chris Lattner ca76d11a81 Adjust to new interface
llvm-svn: 12646
2004-04-04 19:47:06 +00:00
Chris Lattner 092d260fc1 Adjust to new gep_type_iterator prototypes.
llvm-svn: 12644
2004-04-04 17:30:06 +00:00
Chris Lattner 5def7a57c1 Fix PR296: [execution engines] Unhandled cast constant expression
llvm-svn: 12435
2004-03-16 08:38:56 +00:00
Chris Lattner 071a5e5649 Rename the intrinsic enum values for llvm.va_* from Intrinsic::va_* to
Intrinsic::va*.  This avoid conflicting with macros in the stdlib.h file.

llvm-svn: 12356
2004-03-13 00:24:00 +00:00
Brian Gaeke 1eec234f91 My fix for PR274 broke the build on Darwin/PPC. As I'm fairly certain this
bug only affects Linux systems that use GLIBC, I'm going to put ifdefs around
the array.

llvm-svn: 12269
2004-03-10 17:38:28 +00:00
Brian Gaeke 96e450b3b2 Address PR274 - '[JIT] Programs cannot resolve the fstat function'
by trying to get the compiler to generate an undefined reference for it
and related functions which live in libc_nonshared.a on Linux.

Linkers... sigh.

llvm-svn: 12256
2004-03-09 05:22:10 +00:00
Chris Lattner 234a2d4f19 remove obsolete comment
llvm-svn: 11872
2004-02-26 07:59:22 +00:00
Brian Gaeke 7b4be13f94 Represent va_list in interpreter as a (ec-stack-depth . var-arg-index)
pair, and look up varargs in the execution stack every time, instead of
just pushing iterators (which can be invalidated during callFunction())
around.  (union GenericValue now has a "pair of uints" member, to support
this mechanism.) Fixes Bug 234.

llvm-svn: 11845
2004-02-25 23:01:48 +00:00
Brian Gaeke 84b76c9be0 Great sparc renaming fallout IV: Sparc --> SparcV9.
llvm-svn: 11844
2004-02-25 22:09:36 +00:00
Brian Gaeke 068b4596d4 Great renaming part II: Sparc --> SparcV9 (also includes command-line options and Makefiles)
llvm-svn: 11827
2004-02-25 19:08:12 +00:00
Chris Lattner 834b1272f3 Make the JIT zero out globals with memset instead of an element at a time. This
should speed it up a bit on a lot of programs

llvm-svn: 11472
2004-02-15 05:54:06 +00:00
Brian Gaeke 242ebf2523 Fix off-by-one in Interpreter::getFirstVarArg(), which was punishing
any attempts by LLI to use varargs (possibly left over from the introduction
of IntrinsicLowering??)

llvm-svn: 11370
2004-02-13 06:18:39 +00:00
Brian Gaeke 51f100753c The Interpreter was failing the AtExit UnitTest. This fixes it.
llvm-svn: 11367
2004-02-13 05:48:00 +00:00
Chris Lattner fa829be4d3 Start using the new and improve interface to FunctionType arguments
llvm-svn: 11224
2004-02-09 04:14:01 +00:00
Chris Lattner fae8ab3088 rename the "exceptional" destination of an invoke instruction to the 'unwind' dest
llvm-svn: 11202
2004-02-08 21:44:31 +00:00
Chris Lattner dc631735e6 Print out all globals as they are emitted, not just those emitted from
emitGlobals

llvm-svn: 11191
2004-02-08 19:33:23 +00:00
Chris Lattner 6604615a16 There is no reason to #define fd
llvm-svn: 11190
2004-02-08 19:33:07 +00:00
Chris Lattner 93f7c40879 Print an error message if we can't materialize the bytecode file
llvm-svn: 11043
2004-02-01 01:07:25 +00:00
Chris Lattner 8225d83e7b Print an error message if there is an error materialize the bc file.
llvm-svn: 11041
2004-02-01 00:32:35 +00:00
Brian Gaeke 1c0133ffd9 Don't pass anything to the IntrinsicLowering class that is not_intrinsic,
because that makes it abort. Also, fix a typo in a comment.

This checkin brought to you by the "It only takes about 30 seconds to run
ENABLE_LLI tests on Shootout on zion, even if they all dump core" fund.

llvm-svn: 10844
2004-01-14 06:02:53 +00:00
Chris Lattner 748e857996 Add new ExecutionEngine::getGlobalValueAtAddress method, which can efficiently
turn a memory address back into the LLVM global object that starts at that
address.  Note that this won't cause any additional datastructures to be built
for clients of the EE that don't need this information.

Also modified some code to not access the GlobalAddress map directly.

llvm-svn: 10674
2003-12-31 20:21:04 +00:00
Chris Lattner 5d236005b0 Clean up a lot of the code I added yesterday by exposing the IntrinsicLowering
implementation from the TargetMachine directly.

llvm-svn: 10636
2003-12-28 21:23:38 +00:00
Chris Lattner c8c6c03dda Pass around IntrinsicLowering instances as appropriate.
Reimplement the Interpreters implementation of va_* to be more direct.

llvm-svn: 10627
2003-12-28 09:44:37 +00:00
Chris Lattner 5a0d48290f Factor code out of LLI
llvm-svn: 10616
2003-12-26 06:50:30 +00:00
Chris Lattner 385a90aa6d No longer run atExit functions from run()
rename run to runFunction
Genericize the runFunction code a little bit, though it still stinks

llvm-svn: 10610
2003-12-26 06:13:47 +00:00
Chris Lattner d94296c620 No longer run atExit functions from run()
rename run to runFunction

llvm-svn: 10609
2003-12-26 06:13:05 +00:00
Chris Lattner b1bbd7c7f6 This should not be needed anymore
llvm-svn: 10558
2003-12-20 10:19:18 +00:00
Chris Lattner fbcc0aa18d Implement PR135, lazy emission of global variables
llvm-svn: 10549
2003-12-20 03:36:47 +00:00
Chris Lattner 6bbe3ecee5 Simple refactorings to prepare for lazy global emission
Also, add a stat for the number of globals emitted

llvm-svn: 10547
2003-12-20 02:45:37 +00:00
Chris Lattner 9bcae072d1 Cleanup the JIT as per PR176. This renames the VM class to JIT, and merges the
VM.cpp and JIT.cpp files into JIT.cpp.  This also splits some nasty code out
into TargetSelect.cpp so that people hopefully won't notice it.  :)

llvm-svn: 10544
2003-12-20 01:46:27 +00:00
Chris Lattner 32ccf7e196 Update for changes in the JIT
llvm-svn: 10543
2003-12-20 01:45:17 +00:00
Chris Lattner 833c3c2597 Rip JIT specific stuff out of TargetMachine, as per PR176
llvm-svn: 10542
2003-12-20 01:22:19 +00:00
Chris Lattner 1809966189 Finegrainify namespacification
llvm-svn: 10465
2003-12-14 23:25:48 +00:00
Brian Gaeke 13a2e54e0c Dynamically get the right-sized member of a GenericValue to hold a size_t, and
use it to return the result of strlen.

llvm-svn: 10433
2003-12-12 15:38:06 +00:00
Chris Lattner 89af2d5a36 Implement the ExecutionEngine::getPointerToFunctionOrStub by forwarding the
request on to the TargetMachine if it supports the getJITStubForFunction method

llvm-svn: 10431
2003-12-12 07:12:02 +00:00
Brian Gaeke 8657acc07e Since we are using a gep_type_iterator, we apparently must get the type
index by using I.getOperand() here. This was failing an assertion on
basically every struct access.

llvm-svn: 10426
2003-12-12 05:13:05 +00:00
Brian Gaeke 2bba152fb8 Fix typo in comment. Add prototype for getConstantExprValue().
llvm-svn: 10390
2003-12-11 00:23:28 +00:00
Brian Gaeke 5a8ec7d5f6 Add support for --debug-only=interpreter, to print out instrs before
interpreting them.

Move support for getting the value of a ConstantExpr into
getConstantExprValue(), and add support for the rest of the different
kinds of ConstantExprs.  (I don't think I like ConstantExprs!)
This requires separate procedures executeShlInst() and executeShrInst().

Reduce the number of references to TheEE.

Get rid of an old comment mentioning annotations.

Fix exitCalled(), which was crashing the Interpreter. This was a
leftover from the return-value code refactoring.

llvm-svn: 10389
2003-12-11 00:22:59 +00:00
Chris Lattner 86ad4c05d0 implement method
llvm-svn: 10321
2003-12-08 08:23:04 +00:00
Chris Lattner e6492f1057 Use the new method, though noone currently implements it any better than before
llvm-svn: 10320
2003-12-08 08:22:48 +00:00
Chris Lattner c0e1b071b9 Finegrainify namespacification
llvm-svn: 10318
2003-12-08 08:06:28 +00:00
Chris Lattner 98e72b4bb3 Emit constants to one contiguous block, but this time, respect alignment constraints.
If this doesn't work Misha, feel free to revert it.

llvm-svn: 10267
2003-11-30 04:23:21 +00:00
Misha Brukman 873cf93b6e Go back to allocating memory for each constant separately. Since SPARCs do not
allow unaligned loads, that is probably the problem I've been seeing in numerous
SPARC test cases failing. X86, on the other hand, just slows down unaligned
accesses, since it must make 2 aligned accesses for each unaligned one.

llvm-svn: 10266
2003-11-30 00:50:53 +00:00
Chris Lattner f078808a2b Do not depend on structure elements being of type UByteTy
llvm-svn: 10224
2003-11-25 20:44:56 +00:00
Chris Lattner 29681dee09 Fine grainify namespaceification
llvm-svn: 10093
2003-11-19 21:08:57 +00:00
Misha Brukman be755279f3 Emit the MachineConstantPool constants in one contiguous memory `pool'.
llvm-svn: 10060
2003-11-17 20:40:07 +00:00
Misha Brukman fc16bb1af5 * Order #includes as per style guide
* Delete blank comment lines
* Eliminate space between function name and open-paren ( to be consistent

llvm-svn: 10059
2003-11-17 20:37:02 +00:00
Brian Gaeke d81ca471dd Change LLI's internal representation of va_list to a pointer to the next
argument to be returned by va_arg. This allows va_lists to be passed
between different LLVM procedures (though it is unlikely that an LLI
va_list would make sense to an external function, except by chance.)

llvm-svn: 9965
2003-11-13 06:06:01 +00:00
Brian Gaeke 960707c335 Put all LLVM code into the llvm namespace, as per bug 109.
llvm-svn: 9903
2003-11-11 22:41:34 +00:00
Brian Gaeke c3c242c3ac Remove #include of PassManager.h which was marked FIXME, and apparently is no
longer used.

llvm-svn: 9823
2003-11-09 03:15:40 +00:00
Brian Gaeke 9ef636c698 Implement vaarg instruction. This is not quite perfect: 2003-08-11-VaListArg
still causes a crash. But it's better than before.

llvm-svn: 9794
2003-11-07 21:20:47 +00:00
Brian Gaeke 85baf8c65a popStackAndReturnValueToCaller() must advance instruction pointer to normal
destination, if returning from an invoke.

Implement 'unwind' instruction.

llvm-svn: 9792
2003-11-07 20:44:58 +00:00
Misha Brukman d7bcd99325 Remove the *BIG UGLY HACK* from the JIT: PreSelection is now a FunctionPass.
llvm-svn: 9790
2003-11-07 20:32:08 +00:00
Brian Gaeke 6d145eb65f Add stub version of unwind support
llvm-svn: 9789
2003-11-07 20:07:06 +00:00
Brian Gaeke a6454d3532 visitCallInst --> visitCallSite.
Use visitCallSite to implement both CallInsts and InvokeInsts.

llvm-svn: 9788
2003-11-07 20:04:22 +00:00
Brian Gaeke a6d48e4db2 Make the operation of visitCallInst() only depend on the CallSite.
llvm-svn: 9787
2003-11-07 19:59:08 +00:00
Brian Gaeke 18b59578c9 Use CallSites for call sites, instead of CallInsts. A revolutionary concept.
llvm-svn: 9784
2003-11-07 19:26:23 +00:00
Brian Gaeke 65cac90a92 Refactor the return-from-function code into popStackAndReturnValueToCaller().
Make external function calls slightly less special; now they get a stack frame.

llvm-svn: 9765
2003-11-07 05:22:49 +00:00
Chris Lattner b5b9ba6ff6 Be friendly to gcc 3.4... good compiler. Nice compiler.
llvm-svn: 9726
2003-11-05 06:20:27 +00:00
Brian Gaeke 4e106f0649 Abort when the user program calls abort, instead of printing a funny message and calling exit(1).
llvm-svn: 9716
2003-11-05 01:18:49 +00:00
Brian Gaeke 221827ab07 Use regular old malloc to emulate malloc/alloca instructions.
llvm-svn: 9713
2003-11-05 01:02:14 +00:00
Brian Gaeke 175018317e Remove a comment which no longer applies.
llvm-svn: 9712
2003-11-05 00:59:28 +00:00
Brian Gaeke 9d2020003b In VM::create(), comment out almost the whole function if NO_JITS_ENABLED,
because the Arch variable will likely be undefined.

llvm-svn: 9576
2003-10-29 04:24:09 +00:00
Chris Lattner 37edb43831 Unbreak the build
llvm-svn: 9502
2003-10-25 16:18:03 +00:00
Brian Gaeke b77e589bd1 ExecutionEngine::create no longer takes a TraceMode argument.
CurFrame, TraceMode, and the CachedWriter are history.
The ExecutionAnnotations (SlotNumber, InstNumber, and FunctionInfo) are history.
ExecutionContext now keeps Values for each stack frame in a std::map.
printValue() and print() are history.
executeInstruction() is now part of run().

llvm-svn: 9493
2003-10-24 19:59:37 +00:00
Brian Gaeke 65c60e24cd ExecutionEngine::create no longer takes a TraceMode argument.
CurFrame, TraceMode, and the CachedWriter are history.

llvm-svn: 9492
2003-10-24 19:59:28 +00:00
Brian Gaeke 759ba76905 The ExecutionAnnotations (SlotNumber, InstNumber, and FunctionInfo) are history.
llvm-svn: 9490
2003-10-24 19:59:18 +00:00
Brian Gaeke e278c22380 Reduce the number of #includes.
CurFrame, TraceMode, and the CachedWriter are history.
ArrayChecksEnabled and non-QuietMode are history.
The ExecutionAnnotations (SlotNumber, InstNumber, and FunctionInfo) are history.
ExecutionContext now keeps Values for each stack frame in a std::map.
Stop pre-initializing Values on the stack to 42.
Remove some dead variables, excess whitespace and commented-out code.
executeInstruction() is now part of run().
printValue() and print() are history.

llvm-svn: 9489
2003-10-24 19:59:01 +00:00
Brian Gaeke 65cd504822 ExecutionEngine::create no longer takes a TraceMode argument.
llvm-svn: 9488
2003-10-24 19:58:38 +00:00
Brian Gaeke 98b618270a Destroy MachineFunction for any Function that we are about to
recompile and relink. This keeps it from failing an assertion when
it goes and tries to construct a new MachineFunction for that Function.

llvm-svn: 9459
2003-10-24 03:55:37 +00:00
John Criswell 29265fe981 Added LLVM copyright header.
llvm-svn: 9321
2003-10-21 15:17:13 +00:00
John Criswell 4436c49787 Added LLVM copyright notice to Makefiles.
llvm-svn: 9312
2003-10-20 22:26:57 +00:00
John Criswell 482202a601 Added LLVM project notice to the top of every C++ source file.
Header files will be on the way.

llvm-svn: 9298
2003-10-20 19:43:21 +00:00
Chris Lattner f2a34aa278 Hrm, a relic from the past. How cute :)
llvm-svn: 9283
2003-10-20 05:45:49 +00:00
Chris Lattner fefd3bebc4 Interpret the new varargs intrinsics correctly
llvm-svn: 9222
2003-10-18 05:55:25 +00:00
Misha Brukman e37fb9ddc5 Don't release the Module, as that invalidates the Module* within the
ModuleProvider, which has bad consequences in lli::callAsMain() which tries to
access that same Module*.

llvm-svn: 9205
2003-10-17 18:31:59 +00:00
Brian Gaeke d2bc5ac045 Tidy up doxygen comment for getPointerToFunction().
Add prototypes for recompileAndRelinkFunction() and runJITOnFunction().

llvm-svn: 9200
2003-10-17 18:27:12 +00:00
Brian Gaeke 3b5f24513c Refactor running the JIT passes on a single function into the new method,
runJITOnFunction().

Add new method for recompiling and patching in new versions of functions,
recompileAndRelinkFunction().

llvm-svn: 9199
2003-10-17 18:27:00 +00:00
Brian Gaeke 13b9395071 Fix a typo in a comment, and zap a blank line.
llvm-svn: 9184
2003-10-16 23:33:38 +00:00
Misha Brukman 1273147daf JIT.cpp:
* #include "llvm/ModuleProvider"
* alphabetize #includes
* omit extraneous parens in pointer expressions

VM.cpp:
* #include "llvm/ModuleProvider"
* alphabetize #includes

llvm-svn: 9182
2003-10-16 21:19:34 +00:00
Misha Brukman 260b0c88a0 * Reorder includes as per the style guide
* Move the constructors from .h file here
* Document ExecutionEngine::create()
* Catch exception possibly thrown by ModuleProvider::releaseModule()

llvm-svn: 9181
2003-10-16 21:18:05 +00:00
Misha Brukman 1d2d8ec853 Order #includes as per the style guide.
llvm-svn: 9128
2003-10-14 21:42:11 +00:00
Misha Brukman 299f3e650f Enabling incremental bytecode loading in the JIT:
* The VM is now constructed with a ModuleProvider

llvm-svn: 9125
2003-10-14 21:37:41 +00:00
Misha Brukman 2f1e200248 Enabling incremental bytecode loading in the JIT:
* ExecutionEngine and VM can be constructed using a ModuleProvider.

llvm-svn: 9124
2003-10-14 21:36:31 +00:00
Brian Gaeke 74edce6f7c Make mmap's fd for anonymous memory acquisition default to -1, except on
Linux. This is consistent with what FreeBSD and Solaris both want.
This makes the JIT work on FreeBSD 5.1-RELEASE. Whee.

llvm-svn: 9045
2003-10-11 03:51:18 +00:00
Brian Gaeke cc31fddf13 Don't include Config/stdio.h or <stdio.h>.
llvm-svn: 9031
2003-10-10 18:46:29 +00:00
Misha Brukman 857c21b4e0 * Tabs to spaces
* Doxygenified function comments
* Added FIXMEs to solicit documentation for other functions

llvm-svn: 9022
2003-10-10 17:45:12 +00:00
Misha Brukman aa7d26c8c8 Fix spelling.
llvm-svn: 9021
2003-10-10 17:42:19 +00:00
Brian Gaeke 20c65741d0 Never set any signal handlers.
Never call setjmp(), longjmp() or strsignal().

llvm-svn: 9014
2003-10-10 17:03:22 +00:00
Brian Gaeke 6cc20deac1 Rewrite head-of-file comment.
In lookupFunction():
 Change to use "F" for Function argument instead of ancient "M".
 Remove commented-out code.
 Change to use GetAddressOfSymbol instead of dlsym.

llvm-svn: 9013
2003-10-10 17:03:10 +00:00
Brian Gaeke e8bbcfc298 Change to use GetAddressOfSymbol instead of dlsym.
llvm-svn: 9012
2003-10-10 17:02:42 +00:00
Chris Lattner 93cb392a33 Do not read past the end of the contained type list
llvm-svn: 8986
2003-10-09 20:31:18 +00:00
Chris Lattner a220b04ce4 Actually _PASS IN_ NO_RESERVE if we have it.
Thanks to Brian for fixing this obvious oops

llvm-svn: 8899
2003-10-06 19:07:41 +00:00
Chris Lattner 2caaaba3e9 Squelch warning
llvm-svn: 8659
2003-09-22 20:33:34 +00:00
Chris Lattner a28e1f281a Change FunctionInfo from being an annotation put on Functions to be
something which is mapped from functions.

llvm-svn: 8580
2003-09-17 17:26:22 +00:00
Misha Brukman 93d0ffb864 * Move include files from middle of file to the top where they belong, moving
the #define up there too
* Since we're including system headers, use the ones in include/llvm/Config
* While we're here, use the canonical LLVM header ordering algorithm

llvm-svn: 8463
2003-09-10 20:52:05 +00:00
Misha Brukman 8c056e4337 Fix warning when _POSIX_MAPPED_FILES is already defined in unistd.h
llvm-svn: 8436
2003-09-10 15:09:45 +00:00
Chris Lattner 6052fe375c Remove a bunch of unneeded stuph
llvm-svn: 8400
2003-09-08 18:19:58 +00:00
Chris Lattner ad48131254 Reorder #includes to follow LLVM conventions
llvm-svn: 8375
2003-09-05 20:08:15 +00:00
Brian Gaeke f3a300d578 ExecutionEngine.h, GenericValue.h --> include/llvm/ExecutionEngine/
Build ExecutionEngine as library.

llvm-svn: 8370
2003-09-05 19:39:22 +00:00
Brian Gaeke 9b518bc0be Make getOperandValue and executeCastOperation methods of Interpreter.
This lets us protect a few more ExecutionEngine methods.

llvm-svn: 8367
2003-09-05 18:55:03 +00:00
Brian Gaeke a7669038fc Make CreateArgv part of lli rather than part of ExecutionEngine.
Switch Interpreter and JIT's "run" methods to take a Function and a vector of
 GenericValues.
Move (almost all of) the stuff that constructs a canonical call to main()
 into lli (new methods "callAsMain", "makeStringVector").
Nuke getCurrentExecutablePath(), enableTracing(), getCurrentFunction(),
 isStopped(), and many dead decls from interpreter.
Add linux strdup() support to interpreter.
Make interpreter's atexit handler runner and JIT's runAtExitHandlers() look
 more alike, in preparation for refactoring.
atexit() is spelled "atexit", not "at_exit".

llvm-svn: 8366
2003-09-05 18:42:01 +00:00
Brian Gaeke 33d98aebe7 Remove printOperandInfo(), and simplify run().
llvm-svn: 8362
2003-09-05 05:22:08 +00:00
Brian Gaeke ed9917b3f8 Remove support for printing values from a module by name, only used
w/ interactive keyboard entry of names.
With that, Support.cpp is history.

llvm-svn: 8360
2003-09-05 05:04:32 +00:00
Brian Gaeke 8421765778 Remove support for interactive (step finish next) instructions.
Remove printCurrentInstruction, printStackFrame and infoValue
 (only used interactively) and other unused methods of Interpreter.
Fold UserInput.cpp containing only callMainFunction() into Interpreter.cpp.
Remove unused Profile flag.

llvm-svn: 8359
2003-09-05 04:46:26 +00:00
Brian Gaeke 411281cc82 Remove support for breakpoints (not used).
Remove some dead code and whitespace.

llvm-svn: 8346
2003-09-04 23:15:40 +00:00
Brian Gaeke 92f8b30d24 Move EE dtor where it belongs
llvm-svn: 8345
2003-09-04 22:57:27 +00:00
Brian Gaeke e80e5ba7f8 Interpreter cleanups:
Get rid of support for DebugMode (make it always off).
Mung some comments.
Get rid of interpreter's PROFILE_STRUCTURE_FIELDS and PerformExitStuff
 which have been disabled forever.
Get rid of -abort-on-exception (make it always on).
Get rid of user interaction stuff (debug mode innards).
Simplify Interpreter's callMainFunction().

llvm-svn: 8344
2003-09-04 22:21:24 +00:00
Brian Gaeke 4bd3bd5b5a ExecutionEngine.cpp: Move execution engine creation stuff into a new
static method here.
 Remove some extra blank lines.
ExecutionEngine.h: Add its prototype.
lli.cpp: Call it.

Make creation method for each type of EE into a static method of its
own subclass.

Interpreter/Interpreter.cpp: ExecutionEngine::createInterpreter -->
 Interpreter::create
Interpreter/Interpreter.h: Likewise.
JIT/JIT.cpp: ExecutionEngine::createJIT --> VM::create
JIT/VM.h: Likewise.

llvm-svn: 8343
2003-09-03 20:34:19 +00:00
Chris Lattner e722930efd Preselection is now integrated into the Sparc target library
llvm-svn: 8305
2003-09-01 20:30:17 +00:00
Chris Lattner c7f87d30ab Sparc peephole optimizer moved out of post-opts library into Sparc target library
llvm-svn: 8302
2003-09-01 20:26:14 +00:00
Chris Lattner 69cab0dd52 Consult the target data, not the module, about how large the current pointer
size is.  This ensures that if the module has no specified pointer size that
things will work correctly.

llvm-svn: 8136
2003-08-24 19:55:26 +00:00
Chris Lattner 4d4f424f0c Targets now configure themselves based on the source module, not on the
ad-hoc "Config" flags

llvm-svn: 8134
2003-08-24 19:50:53 +00:00
Chris Lattner 479854091a Add preliminary support for "any" pointersize/endianness. This will need
to change soon though.

llvm-svn: 8123
2003-08-24 14:02:47 +00:00
Chris Lattner abca19d2b3 Minor cleanups: wrap at 80 lines. Convert file comment to doxygen format and
llvm style

llvm-svn: 8024
2003-08-21 21:32:12 +00:00
John Criswell 71c3e6236f The JIT now passes the environment pointer to the main() function when it
starts a program.  This allows the GNU env program to compile and JIT under
LLVM.

llvm-svn: 8022
2003-08-21 21:12:30 +00:00
Chris Lattner 8e69339879 no really, implement it!
llvm-svn: 7955
2003-08-18 17:33:15 +00:00
Chris Lattner 0627a96e7e Add support for casting any pointer to any integer type
llvm-svn: 7953
2003-08-18 17:23:40 +00:00
Misha Brukman 7eb05a170a Spell `necessary' correctly.
llvm-svn: 7944
2003-08-18 14:43:39 +00:00
Chris Lattner 6ae402fd2c rename selection library to selectiondag
llvm-svn: 7878
2003-08-15 04:56:09 +00:00
Chris Lattner f26be8427d Implement a _REAL_ memory manager for the code generated by the JIT. This
speeds up program execution by 15% pretty consistently for large programs

llvm-svn: 7845
2003-08-14 18:35:27 +00:00
Brian Gaeke aa58664639 Deconstify parameter to getPointerToFunction().
llvm-svn: 7822
2003-08-13 18:17:54 +00:00
Brian Gaeke 2b804a2797 Deconstify parameter to getPointerToFunction().
Use a FunctionPassManager instead of a PassManager.

llvm-svn: 7820
2003-08-13 18:16:50 +00:00
Brian Gaeke 5896956ff0 Deconstify parameter to getPointerToFunction().
Run passes on single function (hey, just-in-time compilation!)
 instead of the entire module that contains it.

llvm-svn: 7819
2003-08-13 18:16:34 +00:00
Brian Gaeke 1678e859b0 In ExecutionEngine::getPointerToGlobal(), throw away const qualifier
on Function * when passing it to getPointerToFunction().

llvm-svn: 7818
2003-08-13 18:16:14 +00:00
Chris Lattner 32fdf188e7 Incorporate mapping library into the sparc library
llvm-svn: 7800
2003-08-13 02:28:20 +00:00
Chris Lattner f458b7dd3b Include the new selection library for the X86 target
llvm-svn: 7720
2003-08-11 14:59:53 +00:00
Chris Lattner ee937c80ed Specify DEBUG_TYPE's for the JIT debug messages
llvm-svn: 7604
2003-08-05 17:00:32 +00:00
Chris Lattner f0c6964470 DEBUG got moved to Debug.h
llvm-svn: 7491
2003-08-01 22:13:59 +00:00
Misha Brukman e47f069855 * Stop hard-coding a value for beginning of emitted code on Sparc since we can
now handle far calls (i.e., beyond the 30-bit limit in call instructions).
* As a side-effect, this allows us to unify and clean up the mmap() call and
  code around it.

llvm-svn: 7381
2003-07-29 16:57:16 +00:00
Misha Brukman c0ae1cd93e Add rationale for the MAP_ANONYMOUS vs. MAP_ANON flags.
llvm-svn: 7368
2003-07-28 19:26:19 +00:00
Misha Brukman 057f460053 Add ability for external C code to get pointers to functions given their name.
This us used by bugpoint -- when code is compiled to a shared object to be
JITted, it must use the JIT's lazy resolution method to find function addresses,
because some functions will not be available at .so load time, as they are in
the bytecode file.

llvm-svn: 7363
2003-07-28 19:09:06 +00:00
Misha Brukman ee79899ce5 Clean up code dealing with RTLD_SELF differences on Sparc and X86.
llvm-svn: 7362
2003-07-28 19:07:30 +00:00
Misha Brukman d9a9276fe3 Fix reference to architecture.
llvm-svn: 7361
2003-07-28 19:06:50 +00:00
Misha Brukman c69f4a575c Add in support to load shared objects (-load is provided by Support library).
llvm-svn: 7360
2003-07-28 19:06:19 +00:00
Chris Lattner 1442020798 Fix space
llvm-svn: 7273
2003-07-23 20:21:06 +00:00
Chris Lattner 625eef3e41 Remove redundant const qualifier
llvm-svn: 7254
2003-07-23 15:30:32 +00:00
Misha Brukman 1f6feb7bf4 Cleaned up the code which chooses the appropriate value for the file descriptor
to pass to dlsym() -- Linux/x86 wants 0 while Sparc/Solaris wants RTLD_SELF,
which is not zero. Thanks to Chris for the suggestion.

llvm-svn: 7204
2003-07-18 18:33:38 +00:00
Misha Brukman 528a37621b Clean up my last checkin: code is easier to read and explains the differences in
usage of the special file handle RTLD_SELF on Sparc/Solaris vs. 0 on Linux/x86.

llvm-svn: 7177
2003-07-15 15:58:26 +00:00