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1248 Commits

Author SHA1 Message Date
Chris Lattner
011b98cec4 Teach LLVM to unravel the "swap idiom". This implements: 
Regression/Transforms/InstCombine/xor.ll:test20

llvm-svn: 11492
 2004-02-16 03:54:20 +00:00
Chris Lattner
71154f0931 Implement Transforms/InstCombine/xor.ll:test19 
llvm-svn: 11490
 2004-02-16 01:20:27 +00:00
Chris Lattner
c224c03911 Instead of producing calls to setjmp/longjmp, produce uses of the 
llvm.setjmp/llvm.longjmp intrinsics.

llvm-svn: 11482
 2004-02-15 22:24:27 +00:00
Chris Lattner
28131460da Adjustments to support the new ConstantAggregateZero class 
llvm-svn: 11474
 2004-02-15 05:55:15 +00:00
Chris Lattner
52cc69f39e Remove dependence on return type of ConstantStruct::get 
llvm-svn: 11466
 2004-02-15 04:07:32 +00:00
Chris Lattner
3fd2b573f1 Remove dependence on the return type of ConstantArray::get 
llvm-svn: 11463
 2004-02-15 04:05:58 +00:00
Chris Lattner
2265790f9f Fix compilation of 126.gcc: intrinsic functions cannot throw, so they are not 
allowed in invoke instructions.  Thus, if we are inlining a call to an intrinsic
function into an invoke site, we don't need to turn the call into an invoke!

llvm-svn: 11384
 2004-02-13 16:47:35 +00:00
Chris Lattner
b0fadd694d Intrinsic functions cannot throw 
llvm-svn: 11383
 2004-02-13 16:46:46 +00:00
Chris Lattner
f1de565975 Expose a pass ID that can be 'required' 
llvm-svn: 11376
 2004-02-13 16:16:16 +00:00
Chris Lattner
5730220037 Remove obsolete comment. Unreachable blocks will automatically be left at the 
end of the function.

llvm-svn: 11313
 2004-02-11 05:20:50 +00:00
Chris Lattner
ca52c22356 Add an _embarassingly simple_ implementation of basic block layout. This is 
more of a testcase for profiling information than anything that should reasonably
be used, but it's a starting point.  When I have more time I will whip this into
better shape.

llvm-svn: 11311
 2004-02-11 04:53:20 +00:00
Chris Lattner
4418633216 Implement SimplifyCFG/PhiEliminate.ll 
Having a proper 'select' instruction would allow the elimination of a lot
of the special case cruft in this patch, but we don't have one yet.

llvm-svn: 11307
 2004-02-11 03:36:04 +00:00
Chris Lattner
754914b142 The hasConstantReferences predicate always returns false. 
llvm-svn: 11301
 2004-02-11 01:17:07 +00:00
Chris Lattner
d2c679e5f6 initialization calls now return argc. If the program uses the argc value 
passed into main, make sure they use the return value of the init call
instead of the one passed in.

llvm-svn: 11262
 2004-02-10 17:41:01 +00:00
Chris Lattner
e961c1189f Only add the global variable with the abort message if an unwind actually 
occurs in the program.

llvm-svn: 11249
 2004-02-09 22:48:47 +00:00
Chris Lattner
255269e677 Don't depend on auto data conversion 
llvm-svn: 11229
 2004-02-09 05:16:30 +00:00
Chris Lattner
16690fad3d Adjust to the changed StructType interface. In particular, getElementTypes() is gone. 
llvm-svn: 11228
 2004-02-09 04:37:31 +00:00
Chris Lattner
a1757d1d91 Start using the new and improve interface to FunctionType arguments 
llvm-svn: 11224
 2004-02-09 04:14:01 +00:00
Chris Lattner
6ef23e7e64 The ConstantExpr::getCast call can cause a CPR to be generated. If so, 
strip it off.

llvm-svn: 11213
 2004-02-09 00:20:55 +00:00
Misha Brukman
58ca173834 Fix grammar-o. 
llvm-svn: 11210
 2004-02-08 22:27:33 +00:00
Chris Lattner
a9887d33e8 Improve compatibility with programs that already have a prototype for 'write', 
even if it is wierd in some way.

llvm-svn: 11207
 2004-02-08 22:14:44 +00:00
Chris Lattner
68fdb35576 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
70d893a160 Fix PR225: [pruneeh] -pruneeh pass removes invoke instructions it shouldn't 
llvm-svn: 11200
 2004-02-08 21:15:59 +00:00
Chris Lattner
46c84561b2 splitBasicBlock "does the right thing" now, no reason to reposition it. 
llvm-svn: 11199
 2004-02-08 20:49:07 +00:00
Chris Lattner
1c646349df Implement proper invoke/unwind lowering. 
This fixed PR16 "[lowerinvoke] The -lowerinvoke pass does not insert calls to setjmp/longjmp"

llvm-svn: 11195
 2004-02-08 19:53:56 +00:00
Chris Lattner
f549f9473e Add a call to 'write' right before the call to abort() in the unwind path. 
This causes the JIT, or LLC'd program to print out a nice message, explaining
WHY the program aborted.

llvm-svn: 11184
 2004-02-08 07:30:29 +00:00
Chris Lattner
3f57a7faab Fix another dominator update bug. These bugs keep getting exposed because GCSE 
keeps finding more code motion opportunities now that the dominators are correct!

llvm-svn: 11142
 2004-02-05 23:20:59 +00:00
Chris Lattner
f2a8b9e75b Fix bug updating dominators 
llvm-svn: 11140
 2004-02-05 22:33:26 +00:00
Chris Lattner
3846a304eb Add debug output 
llvm-svn: 11139
 2004-02-05 22:33:19 +00:00
Chris Lattner
6875c14234 Fix PR223: Loopsimplify incorrectly updates dominator information 
The problem is that the dominator update code didn't "realize" that it's
possible for the newly inserted basic block to dominate anything.  Because
it IS possible, stuff was getting updated wrong.

llvm-svn: 11137
 2004-02-05 21:12:24 +00:00
Chris Lattner
342b7276d6 Minor speedup, don't query ValueMap each time through the loop 
llvm-svn: 11123
 2004-02-04 21:44:26 +00:00
Chris Lattner
cbe1dd55f4 Two changes: 
1. Don't scan to the end of alloca instructions in the caller function to
     insert inlined allocas, just insert at the top.  This saves a lot of
     time inlining into functions with a lot of allocas.
  2. Use splice to move the alloca instructions over, instead of remove/insert.
     This allows us to transfer a block at a time, and eliminates a bunch of
     silly symbol table manipulations.

This speeds up the inliner on the testcase in PR209 from 1.73s -> 1.04s (67%)

llvm-svn: 11118
 2004-02-04 21:33:42 +00:00
Chris Lattner
790d7321b4 Optimize the case where we are inlining a function that contains only one basic block, 
and that basic block ends with a return instruction.  In this case, we can just splice
the cloned "body" of the function directly into the source basic block, avoiding a lot
of rearrangement and splitBasicBlock's linear scan over the split block.  This speeds up
the inliner on the testcase in PR209 from 2.3s to 1.7s, a 35% reduction.

llvm-svn: 11116
 2004-02-04 04:17:06 +00:00
Chris Lattner
68aef33986 Adjust to the new BasicBlock ctor, which requires a function parameter 
llvm-svn: 11114
 2004-02-04 03:58:28 +00:00
Chris Lattner
d655075e9d Remove unneeded code now that splitBasicBlock does the "right thing" 
llvm-svn: 11111
 2004-02-04 03:21:51 +00:00
Chris Lattner
8f0a362cd4 More refactoring. Move alloca instructions and handle invoke instructions 
before we delete the original call site, allowing slight simplifications of
code, but nothing exciting.

llvm-svn: 11109
 2004-02-04 02:51:48 +00:00
Chris Lattner
ab01a0e982 Move the cloning of the function body much earlier in the inlinefunction 
process.  The only optimization we did so far is to avoid creating a
PHI node, then immediately destroying it in the common case where the
callee has one return statement.  Instead, we just don't create the return
value.  This has no noticable performance impact, but paves the way for
future improvements.

llvm-svn: 11108
 2004-02-04 01:41:09 +00:00
Chris Lattner
aa44b4de3e Give CloneBasicBlock an optional function argument to specify which function 
to add the cloned block to.  This allows the block to be added to the function
immediately, and all of the instructions to be immediately added to the function
symbol table, which speeds up the inliner from 3.7 -> 3.38s on the PR209.

llvm-svn: 11107
 2004-02-04 01:19:43 +00:00
Chris Lattner
2998d508b0 Bunch up all locally used allocas by the block they are allocated in, and 
process them all as a group.  This speeds up SRoA/mem2reg from 28.46s to
0.62s on the testcase from PR209.

llvm-svn: 11100
 2004-02-03 22:34:12 +00:00
Chris Lattner
eee884cc98 Handle extremely trivial cases extremely efficiently. This speeds up 
SRoA/mem2reg from 41.2s to 27.5s on the testcase in PR209.

llvm-svn: 11099
 2004-02-03 22:00:33 +00:00
Chris Lattner
f2a481f7f8 Disable (x - (y - z)) => (x + (z - y)) optimization for floating point. 
llvm-svn: 11083
 2004-02-02 20:09:56 +00:00
Chris Lattner
343ab20a2d Update comment 
llvm-svn: 11082
 2004-02-02 20:09:22 +00:00
Brian Gaeke
1aa59f5107 Make deadarghaX0r warning louder. 
(I just love typing haX0r.   haX0r haX0r haX0r.)

llvm-svn: 11079
 2004-02-02 19:32:27 +00:00
Chris Lattner
824015593c Disable tail duplication in any "hard" cases, where it might break SSA form. 
llvm-svn: 11052
 2004-02-01 06:32:28 +00:00
Chris Lattner
3575c84933 Fix the count of the number of instructions removed 
llvm-svn: 11049
 2004-02-01 05:15:07 +00:00
Misha Brukman
6d62b1ee69 Hyphenate `target-dependent' 
llvm-svn: 11003
 2004-01-28 20:43:01 +00:00
Chris Lattner
f149ec635a Fix InstCombine/2004-01-13-InstCombineInvokePHI.ll, which also fixes lots 
of C++ programs in Shootout-C++, including lists1 and moments, etc

llvm-svn: 10845
 2004-01-14 06:06:08 +00:00
Chris Lattner
7bfaf8bba8 Clean up #includes 
llvm-svn: 10799
 2004-01-12 19:56:36 +00:00
Chris Lattner
68c5d9e0d6 Fix bug in previous checkin 
llvm-svn: 10798
 2004-01-12 19:47:05 +00:00
Chris Lattner
7d2328f69c Eliminate use of ConstantHandling and ConstantExpr::getShift interfaces 
llvm-svn: 10796
 2004-01-12 19:35:11 +00:00
Chris Lattner
f4c2dcbe21 Add header file I accidentally removed in teh shuffle 
llvm-svn: 10795
 2004-01-12 19:15:20 +00:00
Chris Lattner
de401bbd4b Remove use of the ConstantHandling interfaces 
llvm-svn: 10793
 2004-01-12 19:12:50 +00:00
Chris Lattner
47e9056669 Remove use of ConstantExpr::getShift 
llvm-svn: 10792
 2004-01-12 19:10:58 +00:00
Chris Lattner
758109ce2e Don't use ConstantExpr::getShift anymore 
llvm-svn: 10791
 2004-01-12 19:08:43 +00:00
Chris Lattner
23da5dbed6 Remove use of ConstantHandling 
llvm-svn: 10789
 2004-01-12 18:35:03 +00:00
Chris Lattner
4db788b6c5 Remove unneeded #include 
llvm-svn: 10788
 2004-01-12 18:33:54 +00:00
Chris Lattner
7242f6af5f Move llvm::ConstantFoldInstruction from VMCore to here, next to ConstantFoldTerminator 
llvm-svn: 10785
 2004-01-12 18:25:22 +00:00
Chris Lattner
a5101c4743 Remove uses of ConstantHandling itf 
llvm-svn: 10783
 2004-01-12 18:12:44 +00:00
Chris Lattner
5a9246fb56 Use constantexprs for casts. Eliminate use of the ConstantHandling interfaces 
llvm-svn: 10779
 2004-01-12 17:43:40 +00:00
Chris Lattner
8e3cb82d12 Fix fairly severe bug in my last checking where we treated all unfoldable 
constants as being "true" when evaluating branches.  This was introduced
because we now create constantexprs for the constants instead of failing the
fold.

llvm-svn: 10778
 2004-01-12 17:40:36 +00:00
Chris Lattner
a523d45c39 * Implement minor performance optimization for the getelementptr case 
* Implement SCCP of load instructions, implementing Transforms/SCCP/loadtest.ll
  This allows us to fold expressions like "foo"[2], even if the pointer is only
  a conditional constant.

llvm-svn: 10767
 2004-01-12 04:29:41 +00:00
Chris Lattner
cb0fc1ce41 Do not hack on volatile loads. I'm not sure what the point of a volatile load 
from constant memory is, but lets not take chances.

llvm-svn: 10765
 2004-01-12 04:13:56 +00:00
Chris Lattner
1269b71517 Implement SCCP/phitest.ll 
llvm-svn: 10763
 2004-01-12 03:57:30 +00:00
Chris Lattner
40c667e0bc Implement Transforms/ScalarRepl/phinodepromote.ll, which is an important 
case that the C/C++ front-end generates.

llvm-svn: 10761
 2004-01-12 01:18:32 +00:00
Chris Lattner
06e5894c37 Update obsolete comments 
Fix iterator invalidation problems which was causing -mstrip to miss some
entries, and read free'd memory.  This shrinks the symbol table of 254.gap
from 333 to 284 bytes!  :)

llvm-svn: 10751
 2004-01-10 21:36:49 +00:00
Chris Lattner
031bd7e9f3 Finegrainify namespacification 
llvm-svn: 10727
 2004-01-09 06:12:26 +00:00
Chris Lattner
f8c085f3f1 Remove dependence on structure index type. s/MT/FT 
llvm-svn: 10726
 2004-01-09 06:02:51 +00:00
Chris Lattner
d33cc684b5 Finegrainify namespacification 
llvm-svn: 10725
 2004-01-09 06:02:20 +00:00
Chris Lattner
a607777821 Finegrainify namespacification 
add flags for PR82

llvm-svn: 10724
 2004-01-09 05:53:38 +00:00
Chris Lattner
605b8b34fa Inching towards fixing PR82 
llvm-svn: 10722
 2004-01-09 05:44:50 +00:00
Chris Lattner
1736f44b1d 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
Chris Lattner
428c27dfbf 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
099e1f16b8 rename ClassifyExpression -> ClassifyExpr 
llvm-svn: 10592
 2003-12-23 08:04:08 +00:00
Chris Lattner
fefdb67375 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
77fe880dcf Remove extraneous #include 
finegrainify namespacification

llvm-svn: 10589
 2003-12-23 07:43:38 +00:00
Chris Lattner
30fa61ca6c Fix memory corruption bug PR193 
llvm-svn: 10586
 2003-12-22 23:49:36 +00:00
Chris Lattner
8ec8b9c28a 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
1f0b2be06c Implement IndVarsSimplify/pointer-indvars.ll, transforming pointer 
arithmetic into "array subscripts"

llvm-svn: 10580
 2003-12-22 05:02:01 +00:00
Chris Lattner
dfe3e25d89 Fix PR194 
llvm-svn: 10573
 2003-12-22 03:58:44 +00:00
Chris Lattner
e0021ba353 Fix ADCE/2003-12-19-MergeReturn.llx 
llvm-svn: 10539
 2003-12-19 09:08:34 +00:00
Chris Lattner
399d5ad32e Remove the wierd "Operands" loop, by traversing basicblocks in reverse order 
llvm-svn: 10536
 2003-12-19 08:18:16 +00:00
Chris Lattner
68db81e684 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
a0b16fb57d Generalize a special case to fix PR187 
llvm-svn: 10531
 2003-12-19 06:27:08 +00:00
Chris Lattner
e0e1fe84e8 Factor code out into the Utils library 
llvm-svn: 10530
 2003-12-19 05:58:40 +00:00
Chris Lattner
c1952a1fd6 Add new function 
llvm-svn: 10529
 2003-12-19 05:56:28 +00:00
John Criswell
3304c39869 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
0659bb0c4a Merged in RELEASE_11. 
llvm-svn: 10516
 2003-12-18 16:43:17 +00:00
Chris Lattner
17122cbe7b 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
062d3a4ab5 Fix for PR185 & IndVarsSimplify/2003-12-15-Crash.llx 
llvm-svn: 10473
 2003-12-15 17:34:02 +00:00
Chris Lattner
5fc36a496f 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
0d3a8b1cb4 Do not promote volatile alias sets into registers 
llvm-svn: 10458
 2003-12-14 04:52:31 +00:00
Chris Lattner
1f7737b44f 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
bba48ffc66 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
6eae2a120e 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
9b1a0ca03b Don't allow dead instructions to stop sinking early. 
llvm-svn: 10386
 2003-12-10 20:43:29 +00:00
Chris Lattner
677f1ebb07 Fix bug: IndVarsSimplify/2003-12-10-RemoveInstrCrash.llx 
llvm-svn: 10385
 2003-12-10 20:43:04 +00:00
Chris Lattner
0b72993a49 Finegrainify namespacification 
Fix bug: LowerInvoke/2003-12-10-Crash.llx

llvm-svn: 10382
 2003-12-10 20:22:42 +00:00
Chris Lattner
2c641008e6 Finegrainify namespacification 
Reorder #includes
Implement: IndVarsSimplify/2003-12-10-IndVarDeadCode.ll

llvm-svn: 10376
 2003-12-10 18:06:47 +00:00
Chris Lattner
8c7f69563e Finegrainify namespacification 
Fix bug: LoopSimplify/2003-12-10-ExitBlocksProblem.ll

llvm-svn: 10373
 2003-12-10 17:20:35 +00:00
Chris Lattner
d6d41b5e23 Simplify code 
llvm-svn: 10371
 2003-12-10 16:58:24 +00:00