Commit Graph

5184 Commits

Author SHA1 Message Date
Chris Lattner df3c342a4c Finegrainify namespacification
llvm-svn: 10727
2004-01-09 06:12:26 +00:00
Chris Lattner fdf788eebd Remove dependence on structure index type. s/MT/FT
llvm-svn: 10726
2004-01-09 06:02:51 +00:00
Chris Lattner 49525f8cf4 Finegrainify namespacification
llvm-svn: 10725
2004-01-09 06:02:20 +00:00
Chris Lattner ff66958154 Finegrainify namespacification
add flags for PR82

llvm-svn: 10724
2004-01-09 05:53:38 +00:00
Chris Lattner 9cc1a0e40d Inching towards fixing PR82
llvm-svn: 10722
2004-01-09 05:44:50 +00:00
Chris Lattner bc39a1a8c4 Inching our way towards fixing PR82
llvm-svn: 10721
2004-01-09 05:42:34 +00:00
Chris Lattner 59d2d7fc33 Improve encapsulation in the Loop and LoopInfo classes by eliminating the
getSubLoops/getTopLevelLoops methods, replacing them with iterator-based
accessors.

llvm-svn: 10714
2004-01-08 00:09:44 +00:00
Alkis Evlogimenos ae5b3d4f74 Add a separate list of fixed intervals. This improves the running time
of the register allocator as follows:

       before   after
mesa   2.3790  1.5994
vpr    2.6008  1.2078
gcc    1.9840  0.5273
mcf    0.2569  0.0470
eon    1.8468  1.4359
twolf  0.9475  0.2004
burg   1.6807  1.3300
lambda 1.2191  0.3764

Speedups range anyware from 30% to over 400% :-)

llvm-svn: 10712
2004-01-07 09:20:58 +00:00
Alkis Evlogimenos a64d71203e Minor cleanups.
llvm-svn: 10711
2004-01-07 05:31:12 +00:00
Alkis Evlogimenos 9f62b96206 Remove declared but undefined method.
llvm-svn: 10710
2004-01-07 02:29:33 +00:00
Alkis Evlogimenos 1e01557c4e Change implementation of LiveIntervals::overlap(). This results in a
30-50% decrease in running time of the linear scan register allocator.

llvm-svn: 10707
2004-01-07 01:45:58 +00:00
Alkis Evlogimenos 96e9a91f55 Pass std::string to constructor as const reference to avoid multiple
copies.

llvm-svn: 10705
2004-01-06 09:16:02 +00:00
Chris Lattner 59f1ef40b0 Add support for new intrinsic
llvm-svn: 10701
2004-01-06 05:33:02 +00:00
Brian Gaeke 2007cec727 Fix some typos and copy-and-paste-os in comments, and doxygenify.
Add <csignal> so that this file compiles on Solaris.

llvm-svn: 10697
2004-01-05 17:22:52 +00:00
Alkis Evlogimenos 2fa1aef707 Remove simple coalescing.
llvm-svn: 10695
2004-01-05 08:24:57 +00:00
Chris Lattner a090d388a2 /me slaps forehead
llvm-svn: 10693
2004-01-05 05:45:25 +00:00
Chris Lattner fc3d0598df fix warning
llvm-svn: 10692
2004-01-05 05:42:17 +00:00
Chris Lattner 3d903f0c0b Add VMCore and code generator support for debugging intrinsics. By default
code generators completely ignore them.

llvm-svn: 10691
2004-01-05 05:36:30 +00:00
Chris Lattner 45784e4303 Add new dir
llvm-svn: 10686
2004-01-05 05:25:59 +00:00
Chris Lattner 3bb92c65fd Initial checkin of the LLVM source-level debugger. This is still not finished,
by any stretch of the imagination, but it is pretty cool and works :)

llvm-svn: 10685
2004-01-05 05:25:10 +00:00
Alkis Evlogimenos 08c5311729 Currently we cannot handle two-address instructions of the form:
A = B op C where A == C, but this cannot really occur in practice
because of SSA form. Add an assert to check that just to be safe.

llvm-svn: 10682
2004-01-05 02:25:45 +00:00
Alkis Evlogimenos 5e0e67173d Update description.
llvm-svn: 10681
2004-01-04 23:09:24 +00:00
John Criswell 5782ca06fc Not all platforms supports sighandler_t, so I changed it to use the older
return value from signal() (which should be the same type; it's just not
typedef'd).
This fixes the build on Solaris.

llvm-svn: 10675
2004-01-01 15:14:28 +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 78f1f51c66 * Add a new helper progress method
* Make sure that the user sees the 100% mark
* Don't bother printing out X.0%, just print out X%

llvm-svn: 10672
2003-12-31 10:20:38 +00:00
Chris Lattner 09bd1a06c1 Add some comments, add new getGlobalVariable method
llvm-svn: 10671
2003-12-31 08:43:01 +00:00
Chris Lattner 73546536b2 Add missing #include
llvm-svn: 10669
2003-12-31 07:31:10 +00:00
Chris Lattner be3596c8ca * Make Module::getTypeName const
* Add new Module::getTypeByName method
* Group methods in Module.cpp better

llvm-svn: 10668
2003-12-31 07:09:33 +00:00
Chris Lattner efeb39e3c0 Make the lookup method const.
llvm-svn: 10667
2003-12-31 07:08:19 +00:00
Chris Lattner e866d1183b Add new function
llvm-svn: 10664
2003-12-31 06:15:37 +00:00
Chris Lattner 1c007c0ff0 New class, useful for command-line interactive programs.
llvm-svn: 10662
2003-12-31 05:40:02 +00:00
Chris Lattner eb537b2401 Fix PR198
llvm-svn: 10659
2003-12-31 03:19:37 +00:00
Chris Lattner af3f8f3b42 Add comments
llvm-svn: 10658
2003-12-31 02:50:02 +00:00
Chris Lattner fd2a514199 Minor code cleanups. The only bugfix is to the UR_DEBUG stuff which didn't
compile when enabled.

llvm-svn: 10657
2003-12-31 02:18:11 +00:00
Chris Lattner 328e067246 remove some useless #includes
llvm-svn: 10654
2003-12-30 07:55:21 +00:00
Chris Lattner 9b75157c04 Use new getFileSize function instead of sys/stat.h directly.
llvm-svn: 10650
2003-12-30 07:40:35 +00:00
Chris Lattner 4a1c74dcf8 Add new method
llvm-svn: 10649
2003-12-30 07:36:14 +00:00
Chris Lattner 6b668f228f Further revisions of the FDHandle idea. In this version we use ownership
semantics that are the same as those used by std::auto_ptr.  This allows
copying of FDHandle's, but copying transfers ownership.

llvm-svn: 10646
2003-12-30 02:45:16 +00:00
Chris Lattner 0120e92b2b Add trivial exception specs to produce better code since the methods cannot
be inlined.

llvm-svn: 10643
2003-12-29 21:43:58 +00:00
Chris Lattner a462161f9c Factor FDHandle out of the bytecode reader into the FileUtilities.h support
routines.

llvm-svn: 10642
2003-12-29 21:35:05 +00:00
Chris Lattner dca358f6ae implement new getToken function
llvm-svn: 10639
2003-12-29 05:07:02 +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
Alkis Evlogimenos a158dc8104 Reserve ECX and EDI instead of EBX and EDI. Since EBX is a callee
saved register it has a longer free range than ECX (which is defined
every time there is a fnuction call) which makes ECX a better register
to reserve.

llvm-svn: 10635
2003-12-28 18:03:52 +00:00
Alkis Evlogimenos 43b587d94d Add coalescing to register allocator. A hint is added to each interval
which denotes the register we would like to be assigned to (virtual or
physical). In register allocation, if this hint exists and we can map
it to a physical register (it is either a physical register or it is a
virtual register that already got assigned to a physical one) we use
that register if it is available instead of a random one in the free
pool.

llvm-svn: 10634
2003-12-28 17:58:18 +00:00
Alkis Evlogimenos 52564b2071 Add TargetInstrInfo::isMoveInstr() to support coalescing in register
allocation.

llvm-svn: 10633
2003-12-28 17:35:08 +00:00
Chris Lattner 10cac58d23 Whoops, don't try to lower non intrinsic calls
llvm-svn: 10632
2003-12-28 09:53:23 +00:00
Chris Lattner c45a033b42 implement support for the intrinsic lowering functionality
llvm-svn: 10629
2003-12-28 09:47:19 +00:00
Chris Lattner dfc5631bfd Eliminate some code that is not needed now that we have the intrinsic lowering pass
llvm-svn: 10628
2003-12-28 09:46:33 +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 4b75e04a60 Use the intrinsic lowering functionality
llvm-svn: 10626
2003-12-28 09:43:35 +00:00
Chris Lattner 24650d2b5e Move into the VMCore library
llvm-svn: 10623
2003-12-28 08:30:20 +00:00
Chris Lattner 08c196dd4b Implement the default implementation of the intrinsic lowering class
llvm-svn: 10621
2003-12-28 08:19:41 +00:00
Chris Lattner 27dd64242b finegrainify namespacification
minor cleanups

llvm-svn: 10619
2003-12-28 07:59:53 +00:00
Chris Lattner 56db5e98c8 Merging constants can cause further room for improvement. Iterate until
we converge

llvm-svn: 10618
2003-12-28 07:19:08 +00:00
Chris Lattner 5f4c6f55b6 Add a note
llvm-svn: 10617
2003-12-28 04:03:49 +00:00
Chris Lattner 5a0d48290f Factor code out of LLI
llvm-svn: 10616
2003-12-26 06:50:30 +00:00
Chris Lattner 4a2a8f5821 minor cleanups
llvm-svn: 10612
2003-12-26 06:16:00 +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
Alkis Evlogimenos 2e8c984c58 Improve debugging output when choosing a register to spill.
llvm-svn: 10604
2003-12-24 18:53:31 +00:00
Alkis Evlogimenos eeea81483f Do a separate pass to compute spill weights because doing it inline
with live intervals was missing registers that were used before they
were defined (in the arbitrary order live intervals numbers
instructions).

llvm-svn: 10603
2003-12-24 15:44:53 +00:00
Chris Lattner 87c593b882 Right, fix the problem with invoke instructions, not just call instructions
llvm-svn: 10599
2003-12-23 22:18:36 +00:00
Chris Lattner 601415ed84 Do not delete the type holder until after the call instruction has been
constructed!

llvm-svn: 10598
2003-12-23 20:39:17 +00:00
Chris Lattner e970301580 Minor cleanups, plug a minor memory leak
llvm-svn: 10596
2003-12-23 20:05:15 +00:00
Alkis Evlogimenos 7d7d7e89d4 Change the way free regusters are computed and perform better
allocation in the presence of preallocated intervals.

llvm-svn: 10595
2003-12-23 18:00:33 +00:00
Chris Lattner 30513e0a3a rename ClassifyExpression -> ClassifyExpr
llvm-svn: 10592
2003-12-23 08:04:08 +00:00
Chris Lattner 7e755e443f More minor non-functional changes. This now computes the exit condition, though
it doesn't do anything with it.

llvm-svn: 10590
2003-12-23 07:47:09 +00:00
Chris Lattner 93bfb6c741 Remove extraneous #include
finegrainify namespacification

llvm-svn: 10589
2003-12-23 07:43:38 +00:00
Chris Lattner 1e74843e7c Finegrainify namespacification
llvm-svn: 10588
2003-12-23 06:44:41 +00:00
Chris Lattner c2ee05427e Fix memory corruption bug PR193
llvm-svn: 10586
2003-12-22 23:49:36 +00:00
John Criswell bd10d09b07 Reverted back to revision 1.11. The previous fix doesn't really fix
anything; it just causes the bug to go dormant.

llvm-svn: 10585
2003-12-22 16:22:49 +00:00
Alkis Evlogimenos 3ec903474f Fix crash when compiling twolf.
llvm-svn: 10584
2003-12-22 13:54:29 +00:00
Chris Lattner a02d5aa6ce Don't mind me, I'm just refactoring away. This patch makes room for LFTR, but
contains no functionality changes.

llvm-svn: 10583
2003-12-22 09:53:29 +00:00
Chris Lattner a86c4a3a01 finegrainify namespacification
Implement indvar analysis of getelementptr and sub expressions

llvm-svn: 10582
2003-12-22 05:26:29 +00:00
Chris Lattner 6449dcefbc Implement IndVarsSimplify/pointer-indvars.ll, transforming pointer
arithmetic into "array subscripts"

llvm-svn: 10580
2003-12-22 05:02:01 +00:00
Chris Lattner bb661c18c8 finegrainify namespacification
add new getIntPtrType() method

llvm-svn: 10579
2003-12-22 05:01:15 +00:00
Chris Lattner d3678bc7c5 Fix PR194
llvm-svn: 10573
2003-12-22 03:58:44 +00:00
Misha Brukman 69aa1ccb07 Really release memory used by functions. Patch by Chris.
llvm-svn: 10572
2003-12-22 03:47:58 +00:00
Alkis Evlogimenos 690e1b8de2 Remove verifyIntervals() since it doesn't actually work right now.
llvm-svn: 10570
2003-12-21 20:41:26 +00:00
Alkis Evlogimenos 2665d9c6f9 Change weight into a float so that we can take into account the
nesting level when computing it. Right now the allocator uses:

    w = sum_over_defs_uses( 10 ^ nesting level );

llvm-svn: 10569
2003-12-21 20:19:10 +00:00
Alkis Evlogimenos 2103574b32 Move FP_REG_KILL closer to the return instruction.
llvm-svn: 10567
2003-12-21 16:47:43 +00:00
Alkis Evlogimenos c09b77ea35 Add support for inactive intervals. This effectively reuses registers
for live ranges that fall into assigned registers' holes.

llvm-svn: 10566
2003-12-21 05:43:40 +00:00
John Criswell d8c7a7fbaa Fix PR#193.
Modified ReadArchiveBuffer() so that it dynamically allocates the
std::string object used to hold the bytecode object file's name.  This is
necessary because it is passed by reference to the new Module that is
allocated to represent the bytecode object, and previously we were
using a std::string that disappeared on function exit.

llvm-svn: 10565
2003-12-20 22:37:29 +00:00
Alkis Evlogimenos 27437e3318 Move FP_REG_KILL closer to the actual branch instruction.
llvm-svn: 10563
2003-12-20 17:28:15 +00:00
Alkis Evlogimenos 68cff6bf4d Remove floating point killer pass. This is now implemented in the
instruction selector by adding a new pseudo-instruction
FP_REG_KILL. This instruction implicitly defines all x86 fp registers
and is a terminator so that passes which add machine code at the end
of basic blocks (like phi elimination) do not add instructions between
it and the branch or return instruction.

llvm-svn: 10562
2003-12-20 16:22:59 +00:00
Chris Lattner 4cbb97bfdd Add a new target-independent machine code freeing pass
llvm-svn: 10560
2003-12-20 10:20:58 +00:00
Chris Lattner 452597611f Finally, _actually delete the machine code_ for a function, after it has
been emitted.  Also, since the FPK pass is causing memory access violations,
disable it.

llvm-svn: 10559
2003-12-20 10:20:19 +00:00
Chris Lattner b1bbd7c7f6 This should not be needed anymore
llvm-svn: 10558
2003-12-20 10:19:18 +00:00
Chris Lattner af4304f807 Fix memory leak in the stackifier, due to the machinebasicblocks not holding
instructions on an ilist

llvm-svn: 10556
2003-12-20 10:12:17 +00:00
Chris Lattner d46cd68695 Finegrainify namespacification
Minor cleanups to killer pass

llvm-svn: 10555
2003-12-20 09:58:55 +00:00
Chris Lattner 9a4898939a Hoist some sparc specific code into the sparc target
llvm-svn: 10554
2003-12-20 09:17:40 +00:00
Chris Lattner 9a3478e022 * Finegrainify namespacification
* Move sparc specific code out of generic code
* Eliminate the getOffset() method which made INVALID_FRAME_OFFSET
  necessary, which made pulling in MAX_INT as a sentinal necessary.

llvm-svn: 10553
2003-12-20 09:17:07 +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 ddec71c3b6 A minor cleanup for better encapsulation
llvm-svn: 10545
2003-12-20 02:03:14 +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 fc7bdac1b3 Fix ADCE/2003-12-19-MergeReturn.llx
llvm-svn: 10539
2003-12-19 09:08:34 +00:00
Chris Lattner 918460190f Remove the wierd "Operands" loop, by traversing basicblocks in reverse order
llvm-svn: 10536
2003-12-19 08:18:16 +00:00
Chris Lattner 547192d688 Implement LICM/sink_multiple.ll, by sinking all possible instructions in the
loop before hoisting any.

llvm-svn: 10534
2003-12-19 07:22:45 +00:00
Chris Lattner 031a3f8cc7 Generalize a special case to fix PR187
llvm-svn: 10531
2003-12-19 06:27:08 +00:00
Chris Lattner 91daeb5431 Factor code out into the Utils library
llvm-svn: 10530
2003-12-19 05:58:40 +00:00
Chris Lattner 04efa4b155 Add new function
llvm-svn: 10529
2003-12-19 05:56:28 +00:00
Alkis Evlogimenos 7139090fd2 Remove TwoAddressInstruction from the public headers and add an ID
instead, since this pass doesn't expose any state to its users.

llvm-svn: 10520
2003-12-18 22:40:24 +00:00
Chris Lattner 8f88cdfa22 Prune some #includes
Add a statistic for # reloads

llvm-svn: 10518
2003-12-18 20:25:31 +00:00
John Criswell b22e9b4b35 Reverted back to previous revision - this was previously merged
according to the CVS log messages.

llvm-svn: 10517
2003-12-18 17:19:19 +00:00
John Criswell 86a3a48697 Merged in RELEASE_11.
llvm-svn: 10516
2003-12-18 16:43:17 +00:00
Alkis Evlogimenos e5e2bd6777 Modify linear scan register allocator to use the two-address
instruction pass. This also fixes all remaining bugs for this new
allocator to pass all tests under test/Programs.

llvm-svn: 10515
2003-12-18 13:15:02 +00:00
Alkis Evlogimenos 3bd69eaac5 Fix bug in reserved registers. DH actually aliases DX and EDX which
are not reserved registers.

llvm-svn: 10514
2003-12-18 13:12:18 +00:00
Alkis Evlogimenos c17d57bd82 Modify local register allocator to use the two-address instruction pass.
llvm-svn: 10513
2003-12-18 13:08:52 +00:00
Alkis Evlogimenos 725021cb6c Add TwoAddressInstructionPass to handle instructions that have two or
more operands and the two first operands are constrained to be the
same. The pass takes an instruction of the form:

        a = b op c

and transforms it into:

        a = b
        a = a op c

and also preserves live variables.

llvm-svn: 10512
2003-12-18 13:06:04 +00:00
Alkis Evlogimenos 4d87219486 Rename LiveIntervals::expired() to LiveIntervals::expiredAt().
llvm-svn: 10511
2003-12-18 08:56:11 +00:00
Alkis Evlogimenos 15b8036b29 When a variable is killed and redifined in a basic block only one
killing instruction is tracked. This causes the LiveIntervals to
create bogus intervals. The workaound is to add a range to the
interval from the redefinition to the end of the basic block.

llvm-svn: 10510
2003-12-18 08:53:43 +00:00
Alkis Evlogimenos 40874c708f Handle multiple virtual register definitions gracefully.
Move some of the longer LiveIntervals::Interval method out of the
header and add debug information to them. Fix bug and simplify range
merging code.

llvm-svn: 10509
2003-12-18 08:48:48 +00:00
Chris Lattner 9e2b42a0c8 When we delete instructions from the loop, make sure to remove them from the
AliasSetTracker as well.

llvm-svn: 10507
2003-12-18 08:12:32 +00:00
Chris Lattner 44fea5416d Add a new AliassetTracker::remove method. Because we need to be able to remove
a pointer from an AliasSet, maintain the pointer values on a doubly linked
list instead of a singly linked list, to permit efficient removal from the
middle of the list.

llvm-svn: 10506
2003-12-18 08:11:56 +00:00
Misha Brukman ee158ca708 * Converted C-style comments to C++
* Doxygenified comments
* Reordered #includes

llvm-svn: 10503
2003-12-17 22:08:20 +00:00
Misha Brukman 0f42585924 Reordered #includes.
llvm-svn: 10502
2003-12-17 22:06:28 +00:00
Misha Brukman 426275b96d Doxygenified some comments, reduced extraneous space.
llvm-svn: 10501
2003-12-17 22:06:08 +00:00
Misha Brukman b01a80aa94 Reorganized the Sparc backend to be more modular -- each different
implementation of a Target{RegInfo, InstrInfo, Machine, etc} now has a separate
header and a separate implementation file.

This means that instead of a massive SparcInternals.h that forces a
recompilation of the whole target whenever a minor detail is changed, you should
only recompile a few files.

Note that SparcInternals.h is still around; its contents should be minimized.

llvm-svn: 10500
2003-12-17 22:04:00 +00:00
Brian Gaeke 0a9980582d Make getObjectType() smarter about ranlibbed Mac OS X archives.
llvm-svn: 10493
2003-12-17 00:18:18 +00:00
Chris Lattner 6c08bb8b8e Fix for PR185 & IndVarsSimplify/2003-12-15-Crash.llx
llvm-svn: 10473
2003-12-15 17:34:02 +00:00
Alkis Evlogimenos 8870674da7 Change preserve all claim to just preserve live variables and phielimination.
llvm-svn: 10469
2003-12-15 04:55:38 +00:00
Chris Lattner 884e824534 Refactor code just a little bit, allowing us to implement TailCallElim/return_constant.ll
llvm-svn: 10467
2003-12-14 23:57:39 +00:00
Chris Lattner 1809966189 Finegrainify namespacification
llvm-svn: 10465
2003-12-14 23:25:48 +00:00
Chris Lattner c9499b6a20 Finegrainify namespacification
llvm-svn: 10464
2003-12-14 21:35:53 +00:00
Chris Lattner dd978ce8c5 Finegrainify namespacification
Make the Timer code give correct user/system/user+system times when -track-memory is enabled

llvm-svn: 10463
2003-12-14 21:27:33 +00:00
Alkis Evlogimenos aaba4639f8 Change interface of MachineOperand as follows:
a) remove opIsUse(), opIsDefOnly(), opIsDefAndUse()
    b) add isUse(), isDef()
    c) rename opHiBits32() to isHiBits32(),
              opLoBits32() to isLoBits32(),
              opHiBits64() to isHiBits64(),
              opLoBits64() to isLoBits64().

This results to much more readable code, for example compare
"op.opIsDef() || op.opIsDefAndUse()" to "op.isDef()" a pattern used
very often in the code.

llvm-svn: 10461
2003-12-14 13:24:17 +00:00
Alkis Evlogimenos fbeb3b02c3 Change preserve all claim to just preserve live variables and phielimination.
llvm-svn: 10460
2003-12-14 10:14:23 +00:00
Chris Lattner d1c371c32c Do not promote volatile alias sets into registers
llvm-svn: 10458
2003-12-14 04:52:31 +00:00
Chris Lattner 0a14060ce2 Finegrainify namespacification
Add capability to represent volatile AliasSet's
Propagate this information from loads&stores into the aliassets

llvm-svn: 10457
2003-12-14 04:52:11 +00:00
Alkis Evlogimenos 4f7f017ab5 When reserving a preallocated register spill the aliases of this
register too.

llvm-svn: 10450
2003-12-13 11:58:10 +00:00
Alkis Evlogimenos 7dbdf3839c Ignore non-allocatable physical registers in live interval analysis.
llvm-svn: 10449
2003-12-13 11:11:02 +00:00
Alkis Evlogimenos ed53b35076 Expire any active intervals left when register allocation is done.
llvm-svn: 10448
2003-12-13 05:50:19 +00:00
Alkis Evlogimenos e6dc614c3c Add instruction numbers to debugging output.
llvm-svn: 10447
2003-12-13 05:48:57 +00:00
Alkis Evlogimenos 904cd6d48c Add a floating point killer pass. This pass runs before register
allocaton on the X86 to add information to the machine code denoting
that our floating point stackifier cannot handle virtual point
register that are alive across basic blocks. This pass adds an
implicit def of all virtual floating point register at the end of each
basic block.

llvm-svn: 10446
2003-12-13 05:36:22 +00:00
Alkis Evlogimenos 06f379a278 Handle explicit physical register defs.
llvm-svn: 10445
2003-12-13 05:26:39 +00:00
Alkis Evlogimenos 9bced9455a Remove unecessary if statements when looping on ImplicitDefs.
llvm-svn: 10444
2003-12-13 01:20:58 +00:00
John Criswell c6efb11f02 Modified cast so that it converts the int to a long before casting to
a pointer.  This evades a warning emitted by GCC when we cast from
unsigned int (32 bit) to void * (64 bit) on SparcV9.

llvm-svn: 10435
2003-12-12 19:57:48 +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
Chris Lattner 2e7416cb04 Implement the TargetMachine::getJITStubForFunction method for X86, finegrainify
namespacification.

llvm-svn: 10430
2003-12-12 07:11:18 +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 d24cfed317 Throw better error messages, by calling strerror(errno) when we
get an error inside the bytecode reader.

llvm-svn: 10415
2003-12-12 00:47:44 +00:00
Chris Lattner 1eed55d6b9 Factor out some duplicated code, implement the rest of the cases in
BasicAA/2003-12-11-ConstExprGEP.ll

llvm-svn: 10412
2003-12-11 23:20:16 +00:00
Chris Lattner 6ea17f77f8 Fix PR86. This makes basicaa _SIGNIFICANLY_ more aggressive with getelementptr's
llvm-svn: 10410
2003-12-11 22:44:13 +00:00
Chris Lattner 34399dda2d Fix LICM/2003-12-11-SinkingToPHI.ll, and quite possibly all of the other known problems in the universe.
llvm-svn: 10409
2003-12-11 22:23:32 +00:00
Chris Lattner 62aff8412a Finegrainify namespacification
Add new -print-cfg-only pass

llvm-svn: 10407
2003-12-11 21:48:18 +00:00
Chris Lattner 027253b0d5 verifyFunction depends on dominator info, which levelraise does not declare
that it needs.  This is pretty scary code!  This fixes

Regression.Transforms.LevelRaise.2002-07-16-SourceAndDestCrash
Regression.Transforms.LevelRaise.2002-07-31-AssertionFailure

llvm-svn: 10406
2003-12-11 21:47:37 +00:00
Chris Lattner 17790fbb5b Fix a glaring bug
llvm-svn: 10400
2003-12-11 06:06:28 +00:00
Chris Lattner bc1197f292 Realize the gep P, <zeros> must aliases P.
This is a partial fix for PR 86

llvm-svn: 10399
2003-12-11 06:02:00 +00:00
Chris Lattner abb3bea6ce With Brian's change to AA.h we can now clean out this uglyness
llvm-svn: 10398
2003-12-11 05:44:59 +00:00
Brian Gaeke b453bc5957 IncludeFile hack to pull in BasicValueNumbering whenever ValueNumbering.h
is included.

llvm-svn: 10397
2003-12-11 05:05:56 +00:00
Brian Gaeke 36fb4f19cd In getObjectType(), doxygenify comment, and take a pointer to the
beginning of the archive member data as an argument.

Get rid of ParseLongFilenameSection(), which is dead.

In ReadArchiveBuffer(), implement support for 4.4BSD/MacOSX long filenames.
This is kind of invasive, because they prepend the long filename to the archive
member data, and then lie about the size. So we have to keep track of the real
size.

llvm-svn: 10392
2003-12-11 00:38:04 +00:00
Brian Gaeke e869e0cfa8 Turn off "attribute weak" to pacify Mac OS X's system compiler, which prints a
warning whenever it sees it.

llvm-svn: 10391
2003-12-11 00:24:36 +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
John Criswell fb55ac24ec This appears to fix Bug 172 and does not break any other feature tests or
regression tests.

llvm-svn: 10388
2003-12-10 22:51:41 +00:00
Chris Lattner 6281fd3ead Fix bug: LICM/sink_multiple_exits.ll
Thanks for pointing this out John  :)

llvm-svn: 10387
2003-12-10 22:35:56 +00:00
Chris Lattner 55c2113b7b Don't allow dead instructions to stop sinking early.
llvm-svn: 10386
2003-12-10 20:43:29 +00:00
Chris Lattner 713907e2b8 Fix bug: IndVarsSimplify/2003-12-10-RemoveInstrCrash.llx
llvm-svn: 10385
2003-12-10 20:43:04 +00:00
Chris Lattner 7e5bd59da2 Finegrainify namespacification
Fix bug: LowerInvoke/2003-12-10-Crash.llx

llvm-svn: 10382
2003-12-10 20:22:42 +00:00
John Criswell 65b3acdd5b Upon Chris's suggestion, moved the #ifdef's to the generated C code.
This makes LLVM and the generated C code more portable.

llvm-svn: 10377
2003-12-10 18:17:57 +00:00
Chris Lattner ccd9f3c1f8 Finegrainify namespacification
Reorder #includes
Implement: IndVarsSimplify/2003-12-10-IndVarDeadCode.ll

llvm-svn: 10376
2003-12-10 18:06:47 +00:00
John Criswell 83fb097ed0 Fixed the CBE on Solaris/Sparc. We need to define the return value of
the write() system call because it returns 64 bits on Solaris 64 bit,
and an implicit return value of int says it returns 32 bits.
Admittedly, this is a bit of a hack.

llvm-svn: 10375
2003-12-10 18:06:34 +00:00
Chris Lattner 7710f2f49e Finegrainify namespacification
Fix bug: LoopSimplify/2003-12-10-ExitBlocksProblem.ll

llvm-svn: 10373
2003-12-10 17:20:35 +00:00
Chris Lattner 6364314a6e Simplify code
llvm-svn: 10371
2003-12-10 16:58:24 +00:00
Chris Lattner 48b4b852b4 Avoid performing two identical lookups when one will suffice
llvm-svn: 10370
2003-12-10 16:57:24 +00:00
Chris Lattner edda1af35a Make LICM itself a bit more efficient, and make the generated code more efficient too: don't insert a store in every exit block, because a particular block may be exited to more than once by a loop
llvm-svn: 10369
2003-12-10 15:56:24 +00:00
Chris Lattner bff5116da6 Finegrainify namespacification
llvm-svn: 10367
2003-12-10 15:34:03 +00:00
Chris Lattner 8dee84159f Finegrainify namespacification
Provide a context module to WriteAsOperand

llvm-svn: 10366
2003-12-10 15:33:59 +00:00
Chris Lattner aaaea51090 Implement instruction sinking out of loops. This still can do a little bit
better job, but this is the majority of the work.  This implements
LICM/sink*.ll

llvm-svn: 10358
2003-12-10 06:41:05 +00:00
Chris Lattner 6c237bcdf2 Do not insert one entry PHI nodes in split exit blocks!
llvm-svn: 10348
2003-12-09 23:12:55 +00:00
Chris Lattner 65c1193d55 Refactor code a little bit, eliminating the gratuitous InstVisitor, which
should make subsequent changes simpler.  This also allows us to hoist vaarg
and vanext instructions

llvm-svn: 10342
2003-12-09 19:32:44 +00:00
Chris Lattner c05176843e Fine grainify namespacification
Code cleanups
Make LICM::SafeToHoist marginally more efficient

llvm-svn: 10341
2003-12-09 17:18:00 +00:00
Chris Lattner 50663a1a78 Implement: TailCallElim/accum_recursion_constant_arg.ll
Also make sure to clean up any PHI nodes that are inserted which are pointless.

llvm-svn: 10333
2003-12-08 23:37:35 +00:00
Chris Lattner 198e620752 Implement: test/Regression/Transforms/TailCallElim/accum_recursion.ll
We now insert accumulator variables as necessary to eliminate tail recursion
more aggressively.  This is still fairly limited, but allows us to transform
fib/factorial, and other functions into nice happy loops.  :)

llvm-svn: 10332
2003-12-08 23:19:26 +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 a7b6f3ab9c Cleanup and restructure the code to make it easier to read and maintain.
The only functionality change is that we now implement:
  Regression/Transforms/TailCallElim/intervening-inst.ll

Which is really kinda pointless, because it means that trivially dead code
does not interfere with -tce, but trivially dead code probably wouldn't be
around anytime when this pass is run anyway.

The point of including this change it to support other more aggressive
transformations when we have the analysis capabilities to do so.

llvm-svn: 10312
2003-12-08 05:34:54 +00:00
Chris Lattner 771804b541 Implement RaiseAllocations/FreeCastConstantExpr.ll
llvm-svn: 10305
2003-12-07 01:42:08 +00:00
Chris Lattner 8427bffb9a * Finegrainify namespacification
* Transform: free <ty>* (cast <ty2>* X to <ty>*) into free <ty2>* X

llvm-svn: 10303
2003-12-07 01:24:23 +00:00
Chris Lattner d1ea9cd345 The recalclulate method was a nasty hack that was once used by the -cee pass,
which never worked itself.  The cee pass still doesn't work, but it doesn't use
this method anymore anyway, so eliminate the method.

llvm-svn: 10302
2003-12-07 00:55:32 +00:00
Chris Lattner 00f5167693 Completely rewrite domset, idom, and domtree implementation. Now it is based
on the algorithm for directly computing immediate dominators presented in this
paper:

  A Fast Algorithm for Finding Dominators in a Flowgraph
  T. Lengauer & R. Tarjan, ACM TOPLAS July 1979, pgs 121-141.

This _substantially_ speeds up construction of all dominator related information.
Post-dominators to follow.

llvm-svn: 10301
2003-12-07 00:38:08 +00:00
Chris Lattner f9f7c2d302 Finegrainify namespacification
Move method out of generic dominators construction code

llvm-svn: 10299
2003-12-07 00:35:42 +00:00
Alkis Evlogimenos e59ad4b441 Make assertion stricter. Since the source operands are allocated at
this point, the second operand must be a physical register (it cannot
be a virtual one).

llvm-svn: 10292
2003-12-05 11:31:39 +00:00
Alkis Evlogimenos f8fe176204 Fix bug in register spilling when a preallocated live range overlaps a
potential register assignment.

llvm-svn: 10291
2003-12-05 11:17:55 +00:00
Alkis Evlogimenos 2de099e54f Move operator<<(std::ostream&, const LiveInterval&) out of the header file.
llvm-svn: 10290
2003-12-05 10:38:28 +00:00
Alkis Evlogimenos ed28ca93ef Sort live intervals by increasing start point.
llvm-svn: 10289
2003-12-05 10:32:01 +00:00
Alkis Evlogimenos 5fe0031c68 Improve debugging output and clean up some code.
llvm-svn: 10288
2003-12-04 03:57:28 +00:00
Chris Lattner 40d2aeb28f Finegrainify namespacification
Fix regressions ScalarRepl/basictest.ll & arraytest.ll

llvm-svn: 10287
2003-12-02 17:43:55 +00:00
Brian Gaeke 93823ed30c Lock abstraction, introduced with a view toward making the JIT thread-safe.
Eventually.

llvm-svn: 10284
2003-12-01 21:33:31 +00:00
Chris Lattner d9cf9b30eb Emit & read more compressed bytecode by not emitting a bytecodeblock for
each basic block in function.  Instead, just emit a stream of instructions,
chopping up basic blocks based on when we find terminator instructions.  This
saves a fairly substantial chunk of bytecode space.  In stripped, sample
cases, for example, we get this reduction in size:

197.parser: 163036 -> 137180:  18.8% reduction
254.gap   : 844936 -> 689392:  22.6%
255.vortex: 621724 -> 528444:  17.7%

...

Not bad for something this simple.  :)  Note that this doesn't require a new
bytecode version number at all, though version 1.1 should not need to support
the old format.

llvm-svn: 10280
2003-12-01 07:05:31 +00:00
Chris Lattner 6d760d7cb3 Add an option to enable the SSA based peephole optimizer.
Eventually this pass will provide substantially better code in the interim between when we
have a crappy isel and nice isel.  Unfortunately doing so requires fixing the backend to
actually SUPPORT all of the fancy addressing modes that we now generate, and writing a DCE
pass for machine code.  Each of these is a fairly substantial job, so this will remain disabled
for the immediate future.  :(

llvm-svn: 10276
2003-12-01 05:18:30 +00:00
Chris Lattner a913723309 Add a new SSA-based peephole optimizer which includes copy propagation and
folding of instructions into addressing modes.  This creates lots of dead
instructions, which are currently not deleted.  It also creates a lot of
instructions that the X86 backend currently cannot handle.  :(

llvm-svn: 10275
2003-12-01 05:15:28 +00:00
Chris Lattner 128937bbe2 generalize the instruction types permitted a bit
llvm-svn: 10274
2003-12-01 05:13:56 +00:00
Alkis Evlogimenos 26f17e73eb Print instructions before register allocation is performed. Also fix
bug where spill instructions were added to the next basic block
instead of the end of the current one if the instruction that required
the spill was the last in the block.

llvm-svn: 10272
2003-11-30 23:40:39 +00:00
Chris Lattner d8218923ae Finegrainify namespacification
llvm-svn: 10270
2003-11-30 06:13:25 +00:00
Alkis Evlogimenos 0aa40f8db0 Remove "numReloaded" statistic.
llvm-svn: 10268
2003-11-30 05:15:36 +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 8384f97ee4 Fix test: Transforms/LevelRaise/2003-11-28-IllegalTypeConversion.ll
Some gep generalization changes

llvm-svn: 10252
2003-11-29 05:31:25 +00:00
Chris Lattner 6789a0b1d4 To not barf when an error occurs.
llvm-svn: 10236
2003-11-26 07:24:58 +00:00
Chris Lattner eb64b6a922 output foo(void) as appropriate
llvm-svn: 10232
2003-11-26 00:09:17 +00:00
Chris Lattner 883b73f0a8 Fix bug in previous checkin
llvm-svn: 10231
2003-11-25 23:44:40 +00:00
Chris Lattner f5569bb9a5 Fix const correctness
llvm-svn: 10229
2003-11-25 21:28:00 +00:00
Chris Lattner ad70d4a15b Relax constrains on GEP type indexes
llvm-svn: 10228
2003-11-25 21:21:46 +00:00
Chris Lattner 52310702a1 Do not use index type to determine what it is indexing into!
llvm-svn: 10226
2003-11-25 21:09:18 +00:00
Chris Lattner 637ee39933 Do not depend on the gep index types to determine what flavor of index it is
llvm-svn: 10225
2003-11-25 20:49:55 +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 567444309a Do not depend on index type to determine whether it is a structure or sequential index
llvm-svn: 10221
2003-11-25 20:19:55 +00:00
Chris Lattner a346e64218 Fix file header
llvm-svn: 10219
2003-11-25 20:11:47 +00:00
Chris Lattner c3de7c4ec2 Remove dead variable
llvm-svn: 10218
2003-11-25 20:11:00 +00:00
Chris Lattner 388bc98954 Use gep_type_begin/end instead of looking for ubytes
llvm-svn: 10217
2003-11-25 20:10:07 +00:00
Chris Lattner 359974801e Finegrainify namespacification
llvm-svn: 10210
2003-11-25 18:33:40 +00:00
Chris Lattner 2a18c640df Fix PR147
llvm-svn: 10204
2003-11-25 03:54:16 +00:00
Misha Brukman bb718f14e0 Fix copy-pasto.
llvm-svn: 10197
2003-11-24 05:36:38 +00:00
Misha Brukman 7c9144b5f5 Add ability to query if a file is a legitimate ELF shared object.
llvm-svn: 10193
2003-11-24 05:28:12 +00:00
Brian Gaeke 84c0efc946 Support constant casting constant pointers to ints/uints, and/or
the other way around, instead of failing a large, tumor-like assertion.

llvm-svn: 10171
2003-11-22 07:18:25 +00:00
Brian Gaeke 9ba9225b35 Constant shift expressions, meet InstSelectSimple. Yow!!
llvm-svn: 10170
2003-11-22 06:49:41 +00:00
Brian Gaeke e42b8fd298 Stub for constant shift expr support.
llvm-svn: 10168
2003-11-22 05:18:35 +00:00
Brian Gaeke 03f3611633 Fix PR149 - support constant shift expressions.
llvm-svn: 10167
2003-11-22 05:02:56 +00:00
Chris Lattner 28ebb3e0a6 Delete dead line
llvm-svn: 10164
2003-11-22 02:26:17 +00:00
Chris Lattner f40cdbe856 Fix bug: Transforms/PruneEH/2003-11-21-PHIUpdate.llx
llvm-svn: 10163
2003-11-22 02:20:36 +00:00
Chris Lattner 4cc2cc5c58 Do not crash when deleing a region with a dead invoke instruction
llvm-svn: 10161
2003-11-22 02:13:08 +00:00
Chris Lattner 1ad805977d Finegrainify namespacification
The module stripping pass should not strip symbols on external globals

llvm-svn: 10157
2003-11-22 01:29:35 +00:00
Misha Brukman d181666052 * Add code to flush the ICache, which any self-respecting SMC must do
* Restore registers *after* everything else to avoid any possible side effects

This fixes McCat-imp.

llvm-svn: 10147
2003-11-21 23:48:54 +00:00
Chris Lattner 3ae303cc8c Check return types of functions
llvm-svn: 10146
2003-11-21 22:32:23 +00:00
Chris Lattner 61b3f20bf1 Considering that CI is not even IN SCOPE here, I wooda thought the compiler
would have caught this.  *sigh*

llvm-svn: 10142
2003-11-21 21:57:29 +00:00
Chris Lattner f52e03c79e Finegrainify namespacification
llvm-svn: 10138
2003-11-21 21:54:22 +00:00
Chris Lattner 456031eed7 Get rid of using decls, finegrainify namespacification
llvm-svn: 10137
2003-11-21 21:52:10 +00:00
Chris Lattner 51c28a5c1b * Finegrainify namespacification
* Make the cost metric for passing constants in as arguments to functions MUCH
  more accurate, by actually estimating the amount of code that will be constant
  propagated away.

llvm-svn: 10136
2003-11-21 21:46:09 +00:00
Chris Lattner a82f131abb Finegrainify namespacification
Print out the costs for functions that AREN'T inlined as well

llvm-svn: 10135
2003-11-21 21:45:31 +00:00
Chris Lattner dcdc371522 Fix problem Reid was having with external globals and nonexternal linkage
llvm-svn: 10133
2003-11-21 20:33:27 +00:00
Chris Lattner 199bb859a9 Don't crash on bogus source value
llvm-svn: 10132
2003-11-21 20:27:35 +00:00
Chris Lattner 189d19fb04 Finegrainify namespacification
llvm-svn: 10131
2003-11-21 20:23:48 +00:00
Chris Lattner 7e5e456d96 Fix some problems with assertions printing
llvm-svn: 10129
2003-11-21 17:35:51 +00:00
Chris Lattner 9d72c2f229 improve error message
llvm-svn: 10128
2003-11-21 17:06:29 +00:00
Chris Lattner a29600046d Minor cleanups and simplifications
llvm-svn: 10127
2003-11-21 16:52:05 +00:00
Chris Lattner 8791e26de1 * Finegrainify namespacification
* Implement FuncResolve/2003-11-20-BogusResolveWarning.ll
   ... which eliminates a large number of annoying warnings.  I know misha
   will miss them though!

llvm-svn: 10123
2003-11-20 21:21:31 +00:00
Chris Lattner 2af517281d Start using the nicer terminator auto-insertion API
llvm-svn: 10111
2003-11-20 18:25:24 +00:00
Chris Lattner 63a0ccff44 Spew symbolic types!
llvm-svn: 10110
2003-11-20 18:23:14 +00:00
Chris Lattner 18e5d5228a When spewing out warnings during function resolution, do not vomit out pages
and pages of non-symbolic types.

llvm-svn: 10109
2003-11-20 18:19:35 +00:00
Chris Lattner 9ab47d1625 Somehow I forgot poor little UnwindInst
*sniff*

llvm-svn: 10108
2003-11-20 18:11:56 +00:00
Chris Lattner 0e03ab67c3 * Finegrainify namespacification
* Add new constructors to allow insertion of terminator instructions at the
  end of basic blocks.
* Move a ReturnInst method out-of-line, so that the vtable and type info don't
  need to be emitted to every translation unit that uses the class.

llvm-svn: 10107
2003-11-20 17:45:12 +00:00
Alkis Evlogimenos 0e9ded74c0 Merging the linear scan register allocator in trunk. It currently passes most tests under test/Programs/SingleSource/Benchmarks/Shootout so development will continue on trunk. The allocator is not enabled by default. You will need to pass -regallo=linearscan to lli or llc to use it.
llvm-svn: 10103
2003-11-20 03:32:25 +00:00
Chris Lattner 2447ef59c4 Don't crash if we are printing an orphaned basic block!
llvm-svn: 10100
2003-11-20 00:09:43 +00:00
Chris Lattner 29681dee09 Fine grainify namespaceification
llvm-svn: 10093
2003-11-19 21:08:57 +00:00