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1062 Commits

Author SHA1 Message Date
Chris Lattner
f8fbdb5ded Do not cannonicalize (X != 0) into (cast X to bool) 
llvm-svn: 7806
 2003-08-13 05:33:12 +00:00
Chris Lattner
5c9ccccd96 Change cannonicalization rules: add X,X is represented as multiplies, multiplies 
of a power of two are represented as a shift.

llvm-svn: 7803
 2003-08-13 04:18:28 +00:00
Brian Gaeke
9aa6b2db94 Give std::map<BasicBlock *, BasicBlock *> the short name BBMap, because 
it's used 7 different times.
Rename `getBackEdges' to `findAndInstrumentBackEdges', for clarity.
Remove some excess whitespace and commented-out code.
Use shorter forms of CallInst ctors.
Do not make `reopt_threshold' visible to the LLVM program, and do not
 pass it to the call to `reoptimizerInitialize'.  Don't pass the
 GlobalVariable representing it to any of our helper methods.
 `reopt_threshold' is an internal parameter of the reoptimizer, which
 InstLoops does not need to know about.

llvm-svn: 7794
 2003-08-12 22:00:24 +00:00
Chris Lattner
3e52e8ce5a Allow pulling logical operations through shifts. 
This implements InstCombine/shift.ll:test14*

llvm-svn: 7793
 2003-08-12 21:53:41 +00:00
Chris Lattner
7105c4aad0 Fix bug: Reassociate/2003-08-12-InfiniteLoop.ll 
llvm-svn: 7792
 2003-08-12 21:45:24 +00:00
Chris Lattner
c8d2398084 Assign finer grained ranks, make sure to reassociate top-level after reassociating bottom level 
llvm-svn: 7787
 2003-08-12 20:14:27 +00:00
Chris Lattner
2e2432d69e Simplify code 
llvm-svn: 7783
 2003-08-12 19:17:27 +00:00
Chris Lattner
c9c1d9f778 Implement testcases InstCombine/or.ll:test16/test17 
llvm-svn: 7782
 2003-08-12 19:11:07 +00:00
Sumant Kowshik
b3e21bb00f Bug fix: Some nodes pointed to by globals may not be marked incomplete and need to be tracked to find pool arguments 
llvm-svn: 7763
 2003-08-12 00:45:13 +00:00
Chris Lattner
623bd2eb83 Fix handling of 'free' if it has absolutely no prototype 
llvm-svn: 7721
 2003-08-11 15:05:08 +00:00
John Criswell
e5d4f11e14 Fixed a segfault in gccld. 
The original code does not work because the value from WorkList.end() is
invalidated once WorkList.erase() is called.  To ensure proper functionality,
we must ensure that WorkList.erase() is always called before WorkList.end().

llvm-svn: 7673
 2003-08-07 14:43:13 +00:00
Sumant Kowshik
095e7c3052 Added code for pool allocating only the pool-allocatable data structures in the presence of collapsed nodes + a couple of bug fixes 
llvm-svn: 7662
 2003-08-07 05:29:28 +00:00
Chris Lattner
c25494f95e Remove unnecessary use of NonCopyable 
llvm-svn: 7641
 2003-08-06 17:16:24 +00:00
Tanya Lattner
6fbe85279f Fixed minor bug in SafeToHoist and made some changes suggested by Chris. 
llvm-svn: 7614
 2003-08-05 20:39:02 +00:00
Tanya Lattner
48745a598c Fixed LICM bug that hoists trapping instructions that are not guaranteed to execute. 
llvm-svn: 7612
 2003-08-05 18:45:46 +00:00
Chris Lattner
629c78afe3 Minor changes: 
* Expand most tabs into spaces
  * Move #define DEBUG_TYPE to top of file to avoid warning

llvm-svn: 7611
 2003-08-05 18:44:12 +00:00
Sumant Kowshik
18c49a775f Major bug fixes including a memory leak and tracking some exceptional conditions. Also added support for including global and indirect call information in the DS graphs used by the pool allocation 
llvm-svn: 7605
 2003-08-05 17:01:54 +00:00
Chris Lattner
488b0e52a8 Fix bug: SimplifyCFG/2003-08-05-InvokeCrash.ll 
Fix bug: SimplifyCFG/2003-08-05-MishandleInvoke.ll

llvm-svn: 7599
 2003-08-05 16:27:44 +00:00
Chris Lattner
686e94e760 DEBUG got moved to Support/Debug.h 
llvm-svn: 7492
 2003-08-01 22:15:03 +00:00
Chris Lattner
c5b0f39c96 Instcombine: (A >> c1) << c2 for signed integers 
llvm-svn: 7295
 2003-07-24 18:38:56 +00:00
Chris Lattner
bf9589bf1f Reorganization of code, no functional changes. 
Now it shoudl be a bit more efficient

llvm-svn: 7292
 2003-07-24 17:52:58 +00:00
Chris Lattner
785e8453f0 Allow folding several instructions into casts, which can simplify a lot 
of codes.  For example,
short kernel (short t1) {
  t1 >>= 8; t1 <<= 8;
  return t1;
}

became:

short %kernel(short %t1.1) {
        %tmp.3 = shr short %t1.1, ubyte 8               ; <short> [#uses=1]
        %tmp.5 = cast short %tmp.3 to int               ; <int> [#uses=1]
        %tmp.7 = shl int %tmp.5, ubyte 8                ; <int> [#uses=1]
        %tmp.8 = cast int %tmp.7 to short               ; <short> [#uses=1]
        ret short %tmp.8
}

before, now it becomes:
short %kernel(short %t1.1) {
        %tmp.3 = shr short %t1.1, ubyte 8               ; <short> [#uses=1]
        %tmp.8 = shl short %tmp.3, ubyte 8              ; <short> [#uses=1]
        ret short %tmp.8
}

which will become:
short %kernel(short %t1.1) {
        %tmp.3 = and short %t1.1, 0xFF00
        ret short %tmp.3
}

This implements cast-set.ll:test4 and test5

llvm-svn: 7290
 2003-07-24 17:35:25 +00:00
Chris Lattner
9eb9ec67f7 Minor cleanups 
llvm-svn: 7289
 2003-07-24 17:31:56 +00:00
Chris Lattner
31224cdff9 Fix bug: FunctionResolve/2003-07-23-CPR-Reference.ll 
This fixes a long time annoyance which caused prototypes for bzero, bcopy,
bcmp, fputs, and fputs_unlocked to never get deleted.  Grr.

llvm-svn: 7285
 2003-07-23 22:03:18 +00:00
Chris Lattner
6d10220481 Add comments 
llvm-svn: 7283
 2003-07-23 21:41:57 +00:00
Chris Lattner
ac8a2be5e4 Remove explicit check for: not (not X) = X, it is already handled because xor is commutative 
- InstCombine: (X & C1) ^ C2 --> (X & C1) | C2 iff (C1&C2) == 0
  - InstCombine: (X | C1) ^ C2 --> (X | C1) & ~C2 iff (C1&C2) == C2

llvm-svn: 7282
 2003-07-23 21:37:07 +00:00
Chris Lattner
f453a39185 InstCombine: (X ^ C1) & C2 --> (X & C2) iff (C1&C2) == 0 
llvm-svn: 7272
 2003-07-23 19:36:21 +00:00
Chris Lattner
80d9c3a900 - InstCombine: (X | C1) & C2 --> X & C2 iff C1 & C1 == 0 
- InstCombine: (X | C) & C --> C
  - InstCombine: (X | C1) & C2 --> (X | (C1&C2)) & C2

llvm-svn: 7269
 2003-07-23 19:25:52 +00:00
Chris Lattner
76c1da471c IC: (X & C1) | C2 --> (X | C2) & (C1|C2) 
IC: (X ^ C1) | C2 --> (X | C2) ^ (C1&~C2)

We are now guaranteed that all 'or's will be inside of 'and's, and all 'and's
will be inside of 'xor's, if the second operands are constants.

llvm-svn: 7264
 2003-07-23 18:29:44 +00:00
Chris Lattner
4b43cd9700 IC: (X ^ C1) & C2 --> (X & C2) ^ (C1&C2) 
Minor code cleanup

llvm-svn: 7262
 2003-07-23 17:57:01 +00:00
Chris Lattner
ae691a3068 InstCombine: (X ^ 4) == 8 --> X == 12 
llvm-svn: 7260
 2003-07-23 17:26:36 +00:00
Chris Lattner
b07de65646 IC: (X & 5) == 13 --> false 
IC: (X | 8) == 4  --> false

llvm-svn: 7257
 2003-07-23 17:02:11 +00:00
Chris Lattner
6ad460b336 Simplify code by using ConstantInt::getRawValue instead of checking to see 
whether the constant is signed or unsigned, then casting

llvm-svn: 7252
 2003-07-23 15:22:26 +00:00
Chris Lattner
74a266d229 Fix bug: TailDup/2003-07-22-InfiniteLoop.ll 
llvm-svn: 7243
 2003-07-23 03:32:41 +00:00
Chris Lattner
7594fa7280 - InstCombine (cast (xor A, B) to bool) ==> (setne A, B) 
- InstCombine (cast (and X, (1 << size(X)-1)) to bool) ==> x < 0

llvm-svn: 7241
 2003-07-22 21:46:59 +00:00
John Criswell
98946bac5b Added code that checks to see if a global variable is external before replacing 
a load of the global variable with the variable's constant value.

llvm-svn: 7216
 2003-07-21 19:42:57 +00:00
Anand Shukla
d02a20b947 Added check for inlinable function 
llvm-svn: 7206
 2003-07-18 20:55:26 +00:00
Anand Shukla
bb730173d6 A pass to combine multiple backedges that go to same target 
llvm-svn: 7201
 2003-07-18 16:08:32 +00:00
John Criswell
dbaf5f719c Dinakar and I fixed a bug where we were trying to get the initializer of 
an external constant.  Since external constants don't have initializers, we
were failing on an assert() call in llvm/GlobalVariable.h.

llvm-svn: 7193
 2003-07-17 19:06:55 +00:00
Vikram S. Adve
f5914c9bca Trace loads and stores as they happen (stores were being 
remembered in valuesStoredInFunction, but never traced at function return,
and that's too late to be finding the error anyway).
Stores trace both the value and the address being stored to,
but after some experience I think only values should be traced.
The pointer hash table just fills up far too quickly if every
store address were traced.

llvm-svn: 7169
 2003-07-11 21:57:43 +00:00
Anand Shukla
cb78ec5ada Added functionality to instrmentation pass 
llvm-svn: 7161
 2003-07-10 21:55:57 +00:00
John Criswell
258dfc0319 Merged in autoconf branch. This provides configuration via the autoconf 
system.

llvm-svn: 7014
 2003-06-30 21:59:07 +00:00
Chris Lattner
a824a1ab66 Eliminate using declarations, adjust for new DSGraph API 
llvm-svn: 6992
 2003-06-30 03:14:44 +00:00
Chris Lattner
17ea08b804 Allow the inlining limit to be controlled from the command line! 
llvm-svn: 6929
 2003-06-28 15:57:04 +00:00
Chris Lattner
6b54665aa9 Add support to globaldce for deleting dead function prototypes 
llvm-svn: 6918
 2003-06-26 05:41:18 +00:00
Chris Lattner
3dc8d444ff When internalizing global ctor/dtor list, also mark it constant. This is gross, but 
until DSA is working all of the time and is totally reliable, we do this.

llvm-svn: 6917
 2003-06-26 05:30:40 +00:00
Chris Lattner
0cc143577c Add support for elimination of load instruction from global constants 
llvm-svn: 6912
 2003-06-26 05:06:25 +00:00
Chris Lattner
ebbc28f553 Instcombine: X * -1 -> -X 
llvm-svn: 6904
 2003-06-25 17:09:20 +00:00
Chris Lattner
0903331006 Fix bug: Mem2Reg/2003-06-26-IterativePromote.ll 
llvm-svn: 6901
 2003-06-25 14:58:56 +00:00
Chris Lattner
e3d0b99978 Add argument to DAE to allow operation on non-internal functions 
llvm-svn: 6895
 2003-06-25 04:12:49 +00:00
Chris Lattner
2cd94ee470 Fix bug: ADCE/2003-06-24-BadSuccessor.ll 
llvm-svn: 6891
 2003-06-24 23:02:45 +00:00
Chris Lattner
aac87d1e58 Do not mark ALL terminators live if any instruciton in the block is live. We only 
want to mark it live if it is an unconditional branch.  This fixes bug:
ADCE/2002-05-28-Crash.ll and makes this pass _much_ more useful.

llvm-svn: 6887
 2003-06-24 21:49:45 +00:00
Chris Lattner
867b7661cb Fix bug: SCCP/2003-06-24-OverdefinedPHIValue.ll 
llvm-svn: 6883
 2003-06-24 20:29:52 +00:00
Chris Lattner
e1051d9fcf Fix bug: TailDup/2003-06-24-Simpleloop.ll 
llvm-svn: 6881
 2003-06-24 19:48:06 +00:00
Chris Lattner
e1f9e715c6 Implement new transforms: 
Replace (cast (sub A, B) to bool) -> (setne A, B)
  Replace (cast (add A, B) to bool) -> (setne A, -B)

llvm-svn: 6873
 2003-06-23 21:59:52 +00:00
Chris Lattner
1586e054a6 avoid dividing by zero when dealing with zero sized types (like [0 x double]) 
llvm-svn: 6862
 2003-06-23 17:36:49 +00:00
Chris Lattner
a98d464fd6 Add paranoia checking 
llvm-svn: 6856
 2003-06-22 20:46:00 +00:00
Chris Lattner
99633d8cd2 Test change 
llvm-svn: 6852
 2003-06-22 20:25:27 +00:00
Chris Lattner
6d372c7450 Initial checkin of Tail duplication pass. 
llvm-svn: 6846
 2003-06-22 20:10:28 +00:00
Chris Lattner
9a0da3e531 Instcombine cast (getelementptr Ptr, 0, 0, 0) to ... into: cast Ptr to ... 
This fixes type safety problems in a variety of benchmarks that were confusing
DSA.

llvm-svn: 6837
 2003-06-21 23:12:02 +00:00
Chris Lattner
95bf937b5a Fix the build. :( 
llvm-svn: 6797
 2003-06-20 14:36:52 +00:00
Chris Lattner
3a8e92a30b Changes to privatize NodeType 
llvm-svn: 6795
 2003-06-19 21:15:26 +00:00
Chris Lattner
29e8adc038 Implement the functionality of InstCombine/call.ll 
llvm-svn: 6783
 2003-06-19 17:00:31 +00:00
Chris Lattner
cee19b1ace Remove a bunch of complicated code. The functionality is implemented in instcombine instead 
llvm-svn: 6782
 2003-06-19 16:59:19 +00:00
Chris Lattner
d176218b2d Handle arguments passed in through the va_arg area 
llvm-svn: 6769
 2003-06-18 16:25:51 +00:00
Chris Lattner
911e2c331c Initial checkin of DAE pass 
llvm-svn: 6759
 2003-06-17 22:21:05 +00:00
Chris Lattner
2b01ee820e Don't corrupt memory when removing an instruction from the program, but 
not the worklist

llvm-svn: 6733
 2003-06-17 03:57:18 +00:00
Chris Lattner
64ec8f36aa Fix bug: ADCE/2003-06-11-InvalidCFG.ll 
This was because we were deleting large chunks of functions without an exit block, because the post-dominance
information was not useful.  This broke crafty and twolf.

llvm-svn: 6698
 2003-06-16 12:10:45 +00:00
Chris Lattner
326e1fb77d Fix bug: LevelRaise/2003-06-07-EmptyArrayTest.ll 
llvm-svn: 6669
 2003-06-07 21:45:42 +00:00
Chris Lattner
26c238c746 Fix compilation problem on GCC 2.9x 
llvm-svn: 6667
 2003-06-07 20:29:58 +00:00
Chris Lattner
1bbfcd901c Fix bug: InstCombine/2003-06-05-BranchInvertInfLoop.ll 
llvm-svn: 6630
 2003-06-05 20:12:51 +00:00
Anand Shukla
80e3f54082 Fixed a bug so initialization code is always inserted in main 
llvm-svn: 6622
 2003-06-05 06:02:46 +00:00
Chris Lattner
b7423ab729 Use a constant expr GEP instead of an actual instruction 
llvm-svn: 6620
 2003-06-05 04:48:18 +00:00
Chris Lattner
3c98c8953a Make this work with counter > 127 
llvm-svn: 6613
 2003-06-04 20:08:47 +00:00
Sumant Kowshik
a961b3c083 Made changes suggested by Chris 
llvm-svn: 6606
 2003-06-04 08:03:57 +00:00
Chris Lattner
95d21756aa Clean up previous code. 
Add new combination to turn seteq X, 0 -> not(cast X to bool)

llvm-svn: 6604
 2003-06-04 05:10:11 +00:00
Chris Lattner
b2ea03d03a Implement combination of boolean not with branch 
llvm-svn: 6599
 2003-06-04 04:46:00 +00:00
Chris Lattner
eaafbfd2df Implement xform: (X != 0) -> (bool)X 
llvm-svn: 6506
 2003-06-01 03:35:25 +00:00
Anand Shukla
6939133e23 Added the #(internal functions) to output 
llvm-svn: 6502
 2003-06-01 02:40:49 +00:00
Chris Lattner
0897583c5c Fix bug: FunctionResolve/2003-05-31-AllInternalDecls.ll 
llvm-svn: 6486
 2003-05-31 21:57:06 +00:00
Chris Lattner
00751219b0 Fix bug: FuncResolve/2003-05-31-InternalDecl.ll 
Count resolutions correctly.

llvm-svn: 6482
 2003-05-31 21:08:45 +00:00
Chris Lattner
d825cf5ee3 Simplify funcresolve a bit more 
llvm-svn: 6480
 2003-05-31 20:44:46 +00:00
Chris Lattner
a7b50146af Fix bug: FunctionResolve/2003-05-31-FuncPointerResolve.ll 
llvm-svn: 6479
 2003-05-31 20:33:31 +00:00
Tanya Lattner
eaa01f0821 Fixed comment width, changed arg to be const, fixed indentation, removed unnecessary includes. 
llvm-svn: 6476
 2003-05-31 20:01:37 +00:00
Chris Lattner
1c10a30949 Okay totally give up on trying to optimize aggregates that cannot be completely 
broken up into their elements.  Too many programs break because of this.

llvm-svn: 6440
 2003-05-30 19:22:14 +00:00
Chris Lattner
bf8c1cb6a3 add a check that allows the SRoA pass to avoid breaking programs, even if their 
behavior is technically undefined

llvm-svn: 6438
 2003-05-30 18:09:57 +00:00
Tanya Lattner
ce23a1f169 Added the CloneTrace function which clones traces. It takes a vector of basic blocks, removes 
internal phi nodes, and returns a new vector of basic blocks.

llvm-svn: 6431
 2003-05-30 15:50:18 +00:00
Chris Lattner
c9d950434b Fix bug: ScalarRepl/2003-05-30-MultiLevel.ll 
llvm-svn: 6428
 2003-05-30 05:26:30 +00:00
Chris Lattner
0d415b2dd3 Fix bug: ScalarRepl/2003-05-29-ArrayFail.ll 
llvm-svn: 6425
 2003-05-30 04:15:41 +00:00
Sumant Kowshik
3186cb2b05 Added support for function pointers 
llvm-svn: 6420
 2003-05-29 22:42:44 +00:00
Chris Lattner
58c7aaa0e5 Add comment 
llvm-svn: 6415
 2003-05-29 20:26:30 +00:00
Chris Lattner
01cbfa9317 Eliminate unnecessary ->get calls that are now automatically handled. 
llvm-svn: 6397
 2003-05-29 15:12:27 +00:00
Chris Lattner
24947af013 * Separate all of the grunt work of inlining out into the Utils library. 
* Make the function inliner _significantly_ smarter.  :)

llvm-svn: 6396
 2003-05-29 15:11:31 +00:00
Chris Lattner
416e30b07b Fix bug: Instcombine/2003-05-27-ConstExprCrash.ll 
llvm-svn: 6352
 2003-05-27 16:40:51 +00:00
Chris Lattner
8a6c3b5cbe * Actually USE the statistic that we made 
* Implement SRoA for arrays

llvm-svn: 6349
 2003-05-27 16:09:27 +00:00
Chris Lattner
5c093a1a93 Implementation of the simple "scalar replacement of aggregates" transformation 
llvm-svn: 6346
 2003-05-27 15:45:27 +00:00
Chris Lattner
1fde83c9b5 Fix bug: InstCombine/2003-05-26-CastMiscompile.ll 
llvm-svn: 6338
 2003-05-26 23:41:32 +00:00
Chris Lattner
e58f6153f4 Remove using declarations 
llvm-svn: 6306
 2003-05-22 22:00:07 +00:00
Chris Lattner
e1d3dfec23 Make the list accept comma separated names 
llvm-svn: 6295
 2003-05-22 20:27:13 +00:00
Chris Lattner
ab034e55b5 * Revert to old behavior of ignoring a module if it doesn't contain a main 
function and no symbols were explicitly marked to be externalized.
* Add new -internalize-public-api-list option that can be used if the symbol
  list is small, and making a new file is annoying.

llvm-svn: 6289
 2003-05-22 19:48:00 +00:00
Chris Lattner
f26f3f74a3 Add option to internalize to allow it to read a file to determine which symbols 
should not be internalized

llvm-svn: 6288
 2003-05-22 19:34:49 +00:00
Chris Lattner
91c5d68261 Minor cleanups. 
This hunk:
-    } else if (Src->getNumOperands() == 2 && Src->use_size() == 1) {
+    } else if (Src->getNumOperands() == 2) {

Allows GEP folding to be more aggressive, which reduces the number of instructions
and can dramatically speed up BasicAA in some cases.

llvm-svn: 6286
 2003-05-22 19:07:21 +00:00
Chris Lattner
2fba72b389 Fix bug: FunctionResolve/2003-05-21-MissingArguments.ll 
llvm-svn: 6273
 2003-05-21 20:51:52 +00:00
Misha Brukman
825e174bf7 Hopefully, the final fix for `[Pp]ropogate'. 
llvm-svn: 6251
 2003-05-20 21:01:22 +00:00
Misha Brukman
74cf3f5246 s/convertable/convertible/g 
llvm-svn: 6248
 2003-05-20 18:45:36 +00:00
Chris Lattner
d8234cfa3a Fix long standing bug 
llvm-svn: 6232
 2003-05-15 18:25:13 +00:00
Chris Lattner
d0f6311c43 Fix Bug: Linker/2003-05-15-TypeProblem.ll 
llvm-svn: 6225
 2003-05-15 16:30:55 +00:00
Chris Lattner
be0b81a4e9 Fix major problem with appending linkage changes 
llvm-svn: 6185
 2003-05-14 12:11:51 +00:00
Chris Lattner
576323e25e Implement linkage of appending global variables! 
llvm-svn: 6178
 2003-05-13 21:33:43 +00:00
Chris Lattner
6cb27840a7 Fix bug: LoopPreheaders/2003-05-12-PreheaderExitOfChild.ll 
llvm-svn: 6153
 2003-05-12 22:04:34 +00:00
Chris Lattner
a7ee27e0fd Handle va_arg instruction correctly 
llvm-svn: 6030
 2003-05-08 02:50:13 +00:00
Chris Lattner
f1f55e385c Don't inline functions that take variable numbers of arguments! 
llvm-svn: 6024
 2003-05-08 02:36:43 +00:00
Chris Lattner
d381dc9316 Remove using decl 
llvm-svn: 6023
 2003-05-08 02:34:52 +00:00
Chris Lattner
984bb45d4a Attempt to fix sumant's typesafety issue 
llvm-svn: 5984
 2003-05-02 19:32:04 +00:00
Chris Lattner
e006ca4580 Fix spelling 
llvm-svn: 5983
 2003-05-02 19:26:34 +00:00
Chris Lattner
f13fe891d1 Fix Bug: LowerSwitch/2003-05-01-PHIProblem.ll 
llvm-svn: 5979
 2003-05-01 22:21:21 +00:00
Chris Lattner
c2eb77b84f Fix bug: LevelRaise/2003-05-01-CallCast.ll 
llvm-svn: 5975
 2003-05-01 21:02:53 +00:00
Chris Lattner
5045ab0fac Fix another case where constexprs could cause a crash 
llvm-svn: 5972
 2003-04-30 22:34:06 +00:00
Chris Lattner
caa766b40f Fix constant folding of constexprs 
llvm-svn: 5971
 2003-04-30 22:19:10 +00:00
Chris Lattner
a1250081cc Create constant expression casts instead of constant instructions if possible 
llvm-svn: 5968
 2003-04-28 01:25:38 +00:00
Chris Lattner
b74f4c1462 Fix several bugs: 
* Warnings were emitted all of the time and were really annoying
  * Functions could not be resolved unless they had external linkage.  Linkonce
    linkage was not allowed
  * ConstantPointerRef's were not handled when linking functions
    we now actually handle cast (CPR) to X -> cast (NewCPR) to X

llvm-svn: 5967
 2003-04-28 01:23:29 +00:00
Chris Lattner
7e9f0ea3fd Avoid naming things exactly the same 
llvm-svn: 5966
 2003-04-27 22:55:56 +00:00
Chris Lattner
d2960ee802 Fix bug: ADCE/2003-04-25-PHIPostDominateProblem.ll 
llvm-svn: 5952
 2003-04-25 22:53:27 +00:00
Chris Lattner
c78cd5c758 Fix major problem with PHI node traversal: rechecking PHIs should go into 
the visit function.  The worklist is for when their lattice value changes.

llvm-svn: 5927
 2003-04-25 03:35:10 +00:00
Chris Lattner
7b67a6e77d Minor non-functional changes: 
* Spell propagate right
  * Improve performance of phi node handling
  * Delete using directive
  * Other minor changes

llvm-svn: 5920
 2003-04-25 02:50:03 +00:00
Chris Lattner
e1c995e9b6 Fix bug: mem2reg/2003-04-24-MultipleIdenticalSuccessors.ll 
llvm-svn: 5919
 2003-04-25 00:54:58 +00:00
Chris Lattner
3dbf3f0ac1 Make the levelraise pass be well behaved w.r.t the TargetData that the current 
PassMAnager provides.

llvm-svn: 5896
 2003-04-24 18:25:27 +00:00
Chris Lattner
043b4a7621 Fix iterator invalidation problem 
llvm-svn: 5895
 2003-04-24 17:52:20 +00:00
Chris Lattner
f0c01a508b Make sure that the cloned module retains the type symbol table entries! 
llvm-svn: 5894
 2003-04-24 17:15:33 +00:00
Chris Lattner
868b3316c9 Make sure to preserve endiannes and pointer size when cloning modules! 
llvm-svn: 5892
 2003-04-24 15:54:40 +00:00
Chris Lattner
b6050c264d Fix Bug: Linker/2003-04-23-LinkOnceLost.ll 
llvm-svn: 5879
 2003-04-23 18:38:39 +00:00
Chris Lattner
db6b7ba364 Remove unnecesary &*'s 
llvm-svn: 5872
 2003-04-23 16:37:45 +00:00
Chris Lattner
a9eaa10358 New pass to lower switch instructions to branch instructions 
llvm-svn: 5865
 2003-04-23 16:23:59 +00:00
Chris Lattner
d609c99c87 Minor cleanups 
llvm-svn: 5863
 2003-04-23 16:18:14 +00:00
Chris Lattner
69b54208f4 Add warning when linking modules with disagreeing target properties 
llvm-svn: 5845
 2003-04-22 19:13:20 +00:00
Chris Lattner
ce0beca3fc Preserve the new moduleID field 
llvm-svn: 5835
 2003-04-22 18:02:26 +00:00
Chris Lattner
21967df20a Fix bug: 2003-01-30-LinkerRename.ll 
llvm-svn: 5828
 2003-04-21 21:15:04 +00:00
Chris Lattner
6da72fd92a Fix linking a function with qualifiers to a external function declaration: 
Fixed bug: Linker/2003-04-21-Linkage.ll

llvm-svn: 5827
 2003-04-21 21:07:05 +00:00
Chris Lattner
a489b529fe Fix bug where use still existed in dead code 
llvm-svn: 5824
 2003-04-21 19:15:26 +00:00
Chris Lattner
5931df28b7 Implement: FunctionResolve/2003-04-18-ForwardDeclGlobal.ll 
llvm-svn: 5816
 2003-04-19 00:15:27 +00:00
Chris Lattner
61d704329e Fix bug: Mem2reg/2003-04-18-DeadBlockProblem.ll 
llvm-svn: 5810
 2003-04-18 19:25:22 +00:00
Chris Lattner
08b5392e07 Global constants CAN be external 
llvm-svn: 5808
 2003-04-18 04:34:29 +00:00
Chris Lattner
f171f30deb Refactor CloneFunction to expose the new CloneBasicBlock function 
llvm-svn: 5806
 2003-04-18 03:50:09 +00:00
Chris Lattner
5403f79db0 New const_cast instead of c style cast 
llvm-svn: 5805
 2003-04-18 03:49:49 +00:00
Chris Lattner
bb00f755ed Change the interface to constant expressions to allow automatic folding 
llvm-svn: 5793
 2003-04-16 22:40:51 +00:00
Chris Lattner
fa4f750f3e Add new linkage types to support a real frontend 
llvm-svn: 5786
 2003-04-16 20:28:45 +00:00
Chris Lattner
fc93e77390 Make help message more clear 
llvm-svn: 5775
 2003-04-13 03:50:14 +00:00
Chris Lattner
0ac391e6c8 * Fix bug: Mem2Reg/2003-04-10-DFNotFound.ll 
* Make Mem2Reg assign version numbers now for renamed variables instead of
  .mem2reg suffixes.  This produces what people think of as SSA.

llvm-svn: 5771
 2003-04-10 19:41:13 +00:00
Chris Lattner
731913bab3 Initial checkin of PRE on LLVM. This implementation is still lacking in 
several ways:

 * Load expressions are not PRE'd well.  Alias Analysis should be used to
   get accurate information when computing anticipatibility.
 * The expression collection implementation does not handle PHI nodes properly,
   thus the implementation misses many opportunities to PRE.
 * This code could be sped up quite a bit

Despite these flaws, the code seems to work well, and handles PR's as one
would expect.

llvm-svn: 5759
 2003-03-31 19:55:43 +00:00
Chris Lattner
44370a85d9 * We now preserve the no-critical-edge pass (because we cannot insert critical edges) 
* Small modification to be more efficient

llvm-svn: 5757
 2003-03-31 17:30:25 +00:00
Chris Lattner
b215db890f Move BreakCriticalEdges pass to lib/Transforms/Utils 
llvm-svn: 5754
 2003-03-21 21:43:19 +00:00
Chris Lattner
c51d7871ee Add the following instcombine xforms: 
- Implement simple reassociation: (A|c1)|(B|c2) == (A|B)|(c1|c2)
  - (A & C1)+(B & C2) -> (A & C1)|(B & C2) iff C1&C2 == 0
  - (A & C1)^(B & C2) -> (A & C1)|(B & C2) iff C1&C2 == 0

llvm-svn: 5743
 2003-03-11 00:12:48 +00:00
Chris Lattner
6eededc41f Implement: -A*-B == A*B 
llvm-svn: 5740
 2003-03-10 23:23:04 +00:00
Chris Lattner
715b592fc4 Add new transformation: // (~A | ~B) == (~(A & B)) 
llvm-svn: 5738
 2003-03-10 23:13:59 +00:00
Chris Lattner
0f5ab645eb Generalize not and neg comparison testers to allow constant to be considered not'able and neg'able. This 
allows optimization of this:
int %test4(int %A, int %B) {
        %a = xor int %A, -1
        %c = and int %a, 5    ; 5 = ~c2
        %d = xor int %c, -1
        ret int %d
}

into this:
int %test4(int %A, int %B) {            ; No predecessors!
        %c.demorgan = or int %A, -6             ; <int> [#uses=1]
        ret int %c.demorgan
}

llvm-svn: 5736
 2003-03-10 23:06:50 +00:00
Chris Lattner
3eca9aaa0a Generalize (A+c1)+c2 optimization to work with all associative operators 
llvm-svn: 5733
 2003-03-10 21:43:22 +00:00
Chris Lattner
9dec4368c0 Minor change, no functionality diff 
llvm-svn: 5731
 2003-03-10 19:20:30 +00:00
Chris Lattner
5fbfe9b9a8 Fix bug: (x << 100) wasn't folded to 0, but (x >> 100) was (when x is unsigned) 
Implement new shift optimizations for shifting the result of a shift.

llvm-svn: 5729
 2003-03-10 19:16:08 +00:00
Chris Lattner
5e6fb8b8d5 Implement: (A|B)^B == A & (~B) 
llvm-svn: 5728
 2003-03-10 18:24:17 +00:00
Chris Lattner
9f2f48a648 Fix bug: SimplifyCFG/2003-03-07-DominateProblem.ll 
llvm-svn: 5722
 2003-03-07 18:13:41 +00:00
Chris Lattner
bd009a8938 Implement %test7 in InstCombine/getelementptr.ll 
llvm-svn: 5704
 2003-03-05 22:33:14 +00:00
Chris Lattner
4a9f0be9dd Implement CFGSimplify/PhiBlockMerge*.ll 
llvm-svn: 5702
 2003-03-05 21:36:33 +00:00
Chris Lattner
e025920ff8 Implement testcase CFGSimplify/EqualPHIEdgeBlockMerge.ll 
llvm-svn: 5699
 2003-03-05 21:01:52 +00:00
Chris Lattner
4eaaa99b93 Convert LICM over to use AliasSetTracker. Besides being nicer, this automatically 
allows LICM to use access sizes to help alias analysis be more precise.

llvm-svn: 5693
 2003-03-03 23:32:45 +00:00
Chris Lattner
db94bd1661 Eliminate tons of bogus warnings 
llvm-svn: 5686
 2003-03-03 19:57:46 +00:00
Chris Lattner
a49e96dda5 Change the mem2reg interface to accept a TargetData argument 
llvm-svn: 5685
 2003-03-03 17:25:18 +00:00
Chris Lattner
09c35df4e9 Fix bug: LICM/2003-02-28-PromoteDifferentType.ll 
llvm-svn: 5675
 2003-02-28 19:21:40 +00:00
Chris Lattner
dec7727a9f Fix bug I introduced yesterday :( 
llvm-svn: 5669
 2003-02-28 16:54:17 +00:00
Chris Lattner
e2aebf5906 Fix bug: LICM/2003-02-27-PreheaderExitNodeUpdate.ll 
llvm-svn: 5667
 2003-02-28 03:07:54 +00:00
Chris Lattner
d64f135965 Fix bug: 2003-02-27-PreheaderExitNodeUpdate.ll by updating exit node info 
llvm-svn: 5664
 2003-02-27 22:48:57 +00:00
Chris Lattner
74b9aaa89c Add a new assertion to check that stuff is happening right 
Ironically the exit block modification code wasn't updating the exit block
information itself.  Fix this.

llvm-svn: 5659
 2003-02-27 22:31:07 +00:00
Chris Lattner
d40fa5ca2f Fix bug: 2003-02-27-StoreSinkPHIs.ll 
llvm-svn: 5658
 2003-02-27 21:59:36 +00:00
Chris Lattner
e8dda81b22 * Don't forget to update Loop information! 
* Remove bogus assertion: there may be a single outside predecessor and
    still need a new loop-preheader if the predecessor has multiple
    successors.  See bug: LICM/2003-02-27-PreheaderProblem.ll

llvm-svn: 5655
 2003-02-27 21:50:19 +00:00
Chris Lattner
3b3cce733d Replace assertion with a handler. 
llvm-svn: 5653
 2003-02-27 20:55:48 +00:00
Chris Lattner
b078b28fa5 * Significant changes to the preheader insertion pass: 
- Now we perform loop exit-block splitting to ensure exit blocks are
     always dominated by the loop header.
   - We now preserve dominance frontier information
   - This fixes bug: LICM/2003-02-26-LoopExitNotDominated.ll

llvm-svn: 5652
 2003-02-27 20:27:08 +00:00
Chris Lattner
92a8816086 Convert to work with new AliasAnalysis interface by conservatively assuming all pointers are arbitrarily large accesses 
llvm-svn: 5636
 2003-02-26 19:28:57 +00:00
Chris Lattner
497c0d443c Rename Instruction::hasSideEffects() -> mayWriteToMemory() 
llvm-svn: 5620
 2003-02-24 20:48:32 +00:00
Chris Lattner
1c1f11bd3f Initial implementation of Loop invariant memory->scalar promotion 
llvm-svn: 5613
 2003-02-24 03:52:32 +00:00
Chris Lattner
2e4c1c8640 Split mem2reg promotion into two parts: a function which does the work, and 
a pass which wraps the function.  This allows other passes to use the functionality

llvm-svn: 5610
 2003-02-22 23:57:48 +00:00
Chris Lattner
283d117dad Clean up std namespace references 
llvm-svn: 5608
 2003-02-22 22:25:17 +00:00
Chris Lattner
c24ffa9297 4 new transformations: 
* X*C + X --> X * (C+1)
  * X + X*C --> X * (C+1)
  * X - X*C --> X * (1-C)
  * X*C - X --> X * (C-1)

llvm-svn: 5592
 2003-02-18 19:57:07 +00:00
Chris Lattner
8306cc5c5c Add a variety of new transformations: 
* A & ~A == 0
  * A / (2^c) == A >> c  if unsigned
  * 0 / A == 0
  * 1.0 * A == A
  * A * (2^c) == A << c
  * A ^ ~A == -1
  * A | ~A == -1
  * 0 % X = 0
  * A % (2^c) == A & (c-1) if unsigned
  * A - (A & B) == A & ~B
  * -1 - A == ~A

llvm-svn: 5587
 2003-02-18 19:28:33 +00:00
Anand Shukla
7aae29d426 Changes to runtime framework 
llvm-svn: 5572
 2003-02-14 20:41:53 +00:00
Chris Lattner
174a241cd5 Fix a bug that cause a crash resolving questionable function calls 
llvm-svn: 5567
 2003-02-14 19:12:29 +00:00
Chris Lattner
8de17c9baf Fix a misunderstanding of the standard associative containers 
llvm-svn: 5565
 2003-02-14 05:34:36 +00:00
Chris Lattner
e70bdb4355 Fix bug: LevelRaise/2003-02-13-CallRaise.ll 
llvm-svn: 5562
 2003-02-14 03:07:17 +00:00
Chris Lattner
644b87ddb2 Revert Anand's patch which broke the build 
llvm-svn: 5525
 2003-02-10 15:55:50 +00:00
Anand Shukla
a502e67a14 *** empty log message *** 
llvm-svn: 5522
 2003-02-09 21:15:36 +00:00
Chris Lattner
cc7f4a3c65 Fix a problem Sumant was running into 
llvm-svn: 5499
 2003-02-06 22:03:46 +00:00
Chris Lattner
978ff5d0dd Split public interface out into header file 
llvm-svn: 5472
 2003-02-03 19:08:18 +00:00
Chris Lattner
7aec6c471b Change DSGraph stuff to use hash_(set|map) instead of std::(set|map) 
This change provides a small (3%) but consistent speedup

llvm-svn: 5460
 2003-02-01 04:52:08 +00:00
Chris Lattner
aceb57a289 Fix typo 
llvm-svn: 5458
 2003-02-01 04:50:59 +00:00
Chris Lattner
dcf38586ef Fix a bug resolving sprintf(...) to sprintf(char*, char*, ...) 
llvm-svn: 5446
 2003-01-30 22:38:44 +00:00
Chris Lattner
0e59c67f69 Actually print the function _name_ if there is a problem 
llvm-svn: 5443
 2003-01-30 21:33:07 +00:00
Chris Lattner
f1f1b83cbe * Fix linking of opaque types and their non-opaque versions 
* Fix bug: Linker/2003-01-30-LinkerTypeRename.ll

llvm-svn: 5441
 2003-01-30 20:53:43 +00:00
Chris Lattner
f9ace7ffb1 Eliminate using decls 
llvm-svn: 5439
 2003-01-30 19:53:34 +00:00
Chris Lattner
70b2c322eb * Fix function resolution for varargs function to generate incorrect bytecode instead of crashing 
* remove using decls
 CVS: ----------------------------------------------------------------------

llvm-svn: 5437
 2003-01-30 18:22:32 +00:00
Chris Lattner
0ee7b79c71 Fix levelraise/2003-01-30-ShiftCrash.ll 
llvm-svn: 5435
 2003-01-30 17:10:41 +00:00
Chris Lattner
3c20e2c6d1 Initial checkin of pool allocation code 
llvm-svn: 5432
 2003-01-29 21:12:13 +00:00
Chris Lattner
19ad3aaf0a Disable construction of pool allocator 
llvm-svn: 5422
 2003-01-24 20:13:20 +00:00
Chris Lattner
5db30d467a Fix bug: LevelRaise/2003-01-22-GEPProblem.ll 
llvm-svn: 5407
 2003-01-23 02:39:10 +00:00
Chris Lattner
7af7b1c82c Fix bug: ADCE/2003-01-22-PredecessorProblem.ll 
llvm-svn: 5405
 2003-01-23 02:12:18 +00:00
Chris Lattner
9cb223ad0d Rename include/llvm/Transforms/Instrumentation/TraceFunctions.h to Instrumentation.h 
llvm-svn: 5281
 2003-01-14 22:39:29 +00:00
Chris Lattner
1b6292ad6f Fix typeo 
llvm-svn: 5278
 2003-01-14 22:34:36 +00:00
Chris Lattner
b5580841b3 Remove unused header and function 
llvm-svn: 5277
 2003-01-14 22:34:13 +00:00
Chris Lattner
a61f16fc93 Clean up #includes 
Move graph.h into local directory

llvm-svn: 5276
 2003-01-14 22:33:56 +00:00
Chris Lattner
95583742c4 Fix bug 
llvm-svn: 5264
 2003-01-14 19:04:43 +00:00
Chris Lattner
31a6321785 Add debugging helper 
llvm-svn: 5235
 2003-01-13 00:52:25 +00:00
Chris Lattner
5fb6540457 Make sure to handle %'s in strings correctly so that the names of BB's and functions are actually printed! 
llvm-svn: 5234
 2003-01-13 00:52:14 +00:00
Chris Lattner
23aa2d5bfd Fix references to functions 
llvm-svn: 5222
 2003-01-13 00:27:23 +00:00
Chris Lattner
61d594690a Fix a huge performance problem in reassociate by introducing a 
rank map cache for instruction ranks

llvm-svn: 5030
 2002-12-15 03:56:00 +00:00
Chris Lattner
18fe81719d Minor changes: 
* Reword comment to make more clear
  * Don't print out BB's after modification made
  * Don't delete and new an instruction when we need to move something, just move it.

llvm-svn: 5029
 2002-12-15 03:49:50 +00:00
Vikram S. Adve
6c46fba526 External routines used to identify Cilk operations inserted by the 
parallelization pass.

llvm-svn: 4965
 2002-12-10 13:08:48 +00:00
Vikram S. Adve
a9966ae8ad This file implements the function DemoteRegToStack(), which takes a 
virtual register computed by an Instruction& X and replaces it with
a slot in the stack frame, allocated via alloca.

llvm-svn: 4964
 2002-12-10 13:07:58 +00:00
Vikram S. Adve
849346ee23 This file implements a pass that automatically parallelizes a program, 
using the Cilk multi-threaded runtime system to execute parallel code.
The current version inserts too many sync() operations in the program
because it does not attempt to optimize their placement.

llvm-svn: 4962
 2002-12-10 00:43:34 +00:00
Chris Lattner
fc15b7a661 Fix bug that was bugging bugpoint 
llvm-svn: 4953
 2002-12-07 21:27:16 +00:00
Chris Lattner
be53e88459 Remove dead code 
llvm-svn: 4952
 2002-12-07 18:42:13 +00:00
Chris Lattner
6c9d57c590 Fix bug: 2002-12-05-MissedConstProp.ll pointed out by Casey Carter 
llvm-svn: 4935
 2002-12-05 22:41:53 +00:00
Chris Lattner
dd9d97436d Fix big bug introduced with symbol table changes 
llvm-svn: 4885
 2002-12-03 18:32:30 +00:00
Chris Lattner
6aa0ec26d5 Initial checkin of Module cloning support stuff 
llvm-svn: 4788
 2002-11-20 20:47:41 +00:00
Chris Lattner
58944216ff Fix symbol table problem 
llvm-svn: 4785
 2002-11-20 19:32:43 +00:00
Chris Lattner
b5027095e5 - Eliminated the deferred symbol table stuff in Module & Function, it really 
wasn't an optimization and it was causing lots of bugs.

llvm-svn: 4779
 2002-11-20 18:36:02 +00:00
Chris Lattner
ec0df74910 Fix minor bugs 
llvm-svn: 4778
 2002-11-20 18:32:31 +00:00
Chris Lattner
62629300d3 Remove unneccesary #include 
llvm-svn: 4772
 2002-11-19 23:12:53 +00:00
Chris Lattner
4053d2dd12 Implement the CloneFunction function 
llvm-svn: 4771
 2002-11-19 23:12:22 +00:00
Chris Lattner
e5a05ec13b Minor changes to cloning interface 
llvm-svn: 4770
 2002-11-19 22:54:01 +00:00
Chris Lattner
aff50cfe1d Fix two fixmes: integrate with inlining, and document 
llvm-svn: 4769
 2002-11-19 22:04:49 +00:00
Chris Lattner
27bf5916fb Rework inline pass to use cloning infrastructure to do the dirty work 
llvm-svn: 4766
 2002-11-19 21:54:07 +00:00
Chris Lattner
ccb8790bc4 Start using the new function cloning header 
llvm-svn: 4764
 2002-11-19 20:59:41 +00:00
Chris Lattner
7e4c65114b Move MutatStructTypes.h out of IPO 
llvm-svn: 4762
 2002-11-19 20:49:40 +00:00
Chris Lattner
17da38496e Rename CloneFunction.h to Cloning.h 
llvm-svn: 4760
 2002-11-19 20:08:24 +00:00
Chris Lattner
adea9960ab Move the function extractor pass from tools/extract into lib/Xform/IPO 
llvm-svn: 4759
 2002-11-19 18:42:59 +00:00
Chris Lattner
996bf14a4f Fix bug: 2002-11-13-PointerFunction.ll 
This should fix codegen on vortex to work much better

llvm-svn: 4704
 2002-11-13 06:54:20 +00:00
Chris Lattner
96d1bfd014 Fix testcase: FunctionResolve/2002-11-09-ExternFn.ll 
llvm-svn: 4668
 2002-11-10 03:36:55 +00:00
Chris Lattner
0141841bc4 Fix warning 
llvm-svn: 4649
 2002-11-09 00:49:43 +00:00
Chris Lattner
f03f32d2e8 Fix spelling error 
llvm-svn: 4645
 2002-11-08 23:18:37 +00:00
Chris Lattner
7252fe359e Use the new getMainFunction() method to efficiently locate main 
llvm-svn: 4630
 2002-11-08 20:34:21 +00:00
Chris Lattner
d5dc2c1417 Fix bug: FunctionResolve/2002-11-07-RetMismatch.ll 
llvm-svn: 4618
 2002-11-08 00:38:20 +00:00
Chris Lattner
aaf2fa34a5 Instcombine this away: 
%A = getelementptr [4 x int]* %M, long 0, long 0
        %B = getelementptr int* %A, long 2

llvm-svn: 4536
 2002-11-04 16:43:32 +00:00
Chris Lattner
ecddf3396f Add a transformation to turn: 
malloc Ty, C
int
  malloc [C x Ty], 1

llvm-svn: 4534
 2002-11-04 16:18:53 +00:00
Chris Lattner
e27815a482 Ack: Fix bug in previous checkin. 
llvm-svn: 4526
 2002-11-04 05:50:42 +00:00
Chris Lattner
81135c4c57 Be more generous about level raising constant expressions don't force each 
constant to one particular type.

llvm-svn: 4525
 2002-11-04 05:46:37 +00:00
Chris Lattner
b9fa84c1ed Make sure to _delete_ memory allocated by worklists 
llvm-svn: 4523
 2002-11-04 02:54:22 +00:00
Anand Shukla
bf2fc13a2f code to lightly instrument at branches 
llvm-svn: 4511
 2002-11-03 01:45:20 +00:00
Chris Lattner
d94208782e Make sure to include name information if we have it 
llvm-svn: 4481
 2002-11-01 04:49:06 +00:00
Chris Lattner
b913f4e785 Fixes to the reassociate pass to make it respect dominance properties 
Huge thanks go to Casey Carter for writing this fix, reassociate is now
reoperational!

llvm-svn: 4471
 2002-10-31 17:12:59 +00:00
Chris Lattner
1ec9725ef8 BreakCriticalEdges should update dominance frontier information as well as 
other dominance stuff.  Patch contributed by Casey Carter

llvm-svn: 4457
 2002-10-31 02:44:36 +00:00
Misha Brukman
c9c721edf0 Fix spelling of `propagate'. 
llvm-svn: 4423
 2002-10-29 23:06:16 +00:00
Chris Lattner
b8ffbe6966 Ensure definate initialization 
llvm-svn: 4263
 2002-10-22 23:34:11 +00:00
Chris Lattner
b565d3ac5b - Rename AnalysisUsage::preservesAll to getPreservesAll & preservesCFG to 
setPreservesCFG to be less confusing.

llvm-svn: 4255
 2002-10-21 20:00:28 +00:00