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873 Commits

Author SHA1 Message Date
Chris Lattner 1085bdf49f 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 0544dadbee Ack: Fix bug in previous checkin. 
llvm-svn: 4526
 2002-11-04 05:50:42 +00:00
Chris Lattner 4262f815b5 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 669c6cf459 Make sure to _delete_ memory allocated by worklists 
llvm-svn: 4523
 2002-11-04 02:54:22 +00:00
Anand Shukla 320febba68 code to lightly instrument at branches 
llvm-svn: 4511
 2002-11-03 01:45:20 +00:00
Chris Lattner 36c05c8f69 Make sure to include name information if we have it 
llvm-svn: 4481
 2002-11-01 04:49:06 +00:00
Chris Lattner 8fdf75cde5 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 12764c85e8 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 632df28deb Fix spelling of `propagate'. 
llvm-svn: 4423
 2002-10-29 23:06:16 +00:00
Chris Lattner 5ae3bd630d Ensure definate initialization 
llvm-svn: 4263
 2002-10-22 23:34:11 +00:00
Chris Lattner 820d971233 - Rename AnalysisUsage::preservesAll to getPreservesAll & preservesCFG to 
setPreservesCFG to be less confusing.

llvm-svn: 4255
 2002-10-21 20:00:28 +00:00
Chris Lattner 26783a5be5 * Apparently string::find doesn't work right on our sun boxes. Work around this. 
llvm-svn: 4219
 2002-10-17 16:22:08 +00:00
Chris Lattner 3ff5457b32 Really disable pool allocator 
llvm-svn: 4216
 2002-10-17 04:57:09 +00:00
Chris Lattner 149376dee5 - Change Function's so that their argument list is populated when they are 
constructed.  Before, external functions would have an empty argument list,
    now a Function ALWAYS has a populated argument list.

llvm-svn: 4149
 2002-10-13 20:57:00 +00:00
Chris Lattner 69ce8674b5 - Rename Instruction::First*Op to *OpsBegin, and Num*Ops to *OpsEnd to 
reflect the fact that it's a range being defined.

llvm-svn: 4147
 2002-10-13 19:39:16 +00:00
Chris Lattner 5f9f4e3aac Account for global variables resolved more accurately. 
llvm-svn: 4143
 2002-10-13 17:30:30 +00:00
Chris Lattner 88dbc4dbe9 Use methods that are more explanatory 
llvm-svn: 4142
 2002-10-13 17:12:47 +00:00
Anand Shukla 12b05f3880 Changed to external global var 
llvm-svn: 4120
 2002-10-12 20:33:47 +00:00
Chris Lattner 1a535e18cd Stop using DataStructureGraph.h 
llvm-svn: 4106
 2002-10-10 20:33:46 +00:00
Chris Lattner eac4dcd0bd - Dramatically simplify the ConstantMerge code now that 
Value::replaceAllUsesWith works with constants correctly.

llvm-svn: 4104
 2002-10-09 23:16:04 +00:00
Chris Lattner 013eca003a Almost a complete rewrite of FunctionResolution to now resolve functions 
and global variables.

This fixes bug: FuncResolve/2002-08-19-ResolveGlobalVarsEasier.ll
And bug: SingleSource/UnitTests/2002-10-09-ArrayResolution.c

Note that this does not fix bug:
FunctionResolve/2002-08-19-ResolveGlobalVars.ll because replaceAllUsesWith
breaks when a constantexpr is pointing to the thing being replaced.  This
is more of an infrastructure problem than anything.

llvm-svn: 4099
 2002-10-09 21:10:06 +00:00
Chris Lattner a4e2653cd7 - Rename MTy to FTy (no methods exist anymore) 
- Fix bug: LevelRaise/2002-10-08-VarArgCallInfLoop.ll

llvm-svn: 4088
 2002-10-09 00:16:00 +00:00
Chris Lattner a185db3d72 - Fix bug: LevelRaise/2002-10-08-VarArgCall.ll 
llvm-svn: 4083
 2002-10-08 22:19:25 +00:00
Chris Lattner b7368500dc - Fix bug: cee/2002-10-07-NoImmediateDominator.ll 
llvm-svn: 4081
 2002-10-08 21:53:51 +00:00
Chris Lattner caf5b504a3 Changes to support PHINode::removeIncoming changes 
llvm-svn: 4080
 2002-10-08 21:36:34 +00:00
Chris Lattner a704ac8a66 Changes to support PHINode::removeIncoming changes 
llvm-svn: 4079
 2002-10-08 21:36:33 +00:00
Chris Lattner 736709feda - Checkin LARGE number of Changes to CEE pass that will make it much more 
powerful, but that are largely disabled.  The basic idea here is that it
    is trying to forward branches across basic blocks that have PHI nodes in
    it, which are crucial to be able to handle cases like whet.ll.
    Unfortunately we are not updating SSA correctly, causing sim.c to die, and I
    don't have time to fix the regression now, so I must disable the
    functionality.

llvm-svn: 4077
 2002-10-08 21:34:15 +00:00
Chris Lattner 5ac72defc9 Expose isCriticalEdge & SplitCriticalEdge methods from crit-edges pass 
llvm-svn: 4075
 2002-10-08 21:06:27 +00:00
Chris Lattner 394617f38b It is illegal for PHI nodes to have zero values, delete the code to handle them 
llvm-svn: 4071
 2002-10-08 17:07:39 +00:00
Chris Lattner 2e0fb39d87 Fold ashr -1, X into -1 
llvm-svn: 4070
 2002-10-08 16:16:40 +00:00
Chris Lattner 68f21bcb1b Non-functionality change just to make it more clear what is going on 
llvm-svn: 4060
 2002-10-07 18:34:32 +00:00
Chris Lattner 0f5346d743 Fix bug: 2002-10-02-SignExtensionProblem.ll 
llvm-svn: 4017
 2002-10-02 18:53:14 +00:00
Chris Lattner c2996d9a8b Changes to work with Statistics rework 
* Renamed StatisticReporter.h/cpp to Statistic.h/cpp
    * Broke constructor to take two const char * arguments instead of one, so
      that indendation can be taken care of automatically.
    * Sort the list by pass name when printing
    * Make sure to print all statistics as a group, instead of randomly when
      the statistics dtors are called.
    * Updated ProgrammersManual with new semantics.

llvm-svn: 4004
 2002-10-01 22:40:31 +00:00
Chris Lattner bf3a099a62 Updates to work with recent Statistic's changes: 
* Renamed StatisticReporter.h/cpp to Statistic.h/cpp
    * Broke constructor to take two const char * arguments instead of one, so
      that indendation can be taken care of automatically.
    * Sort the list by pass name when printing
    * Make sure to print all statistics as a group, instead of randomly when
      the statistics dtors are called.
    * Updated ProgrammersManual with new semantics.

llvm-svn: 4002
 2002-10-01 22:38:41 +00:00
Chris Lattner 3cf3782bc0 Updates to work with recent Statistic's changes: 
* Renamed StatisticReporter.h/cpp to Statistic.h/cpp
    * Broke constructor to take two const char * arguments instead of one, so
      that indendation can be taken care of automatically.
    * Sort the list by pass name when printing
    * Make sure to print all statistics as a group, instead of randomly when
      the statistics dtors are called.
    * Updated ProgrammersManual with new semantics.

llvm-svn: 4001
 2002-10-01 22:38:37 +00:00
Chris Lattner f242bec91b Build subdirs in parallel 
llvm-svn: 4000
 2002-10-01 22:36:35 +00:00
Chris Lattner 05e86302f4 Fix bug in LICM that caused the previous big win. :( 
llvm-svn: 3980
 2002-09-29 22:26:07 +00:00
Chris Lattner 6443769b34 Hoist the contents of Loops in depth first order in the dominator tree, 
rather than in random order.  This causes LICM to be DRAMATICALLY more
effective. For example, on bzip2.c, it is able to hoist 302 loads and
2380 total instructions, as opposed to 44/338 before.  This  obviously
makes other transformations much more powerful as well!

llvm-svn: 3978
 2002-09-29 21:46:09 +00:00
Chris Lattner 03a9e15a9f Fix major bugs in dominator set & tree information updating 
llvm-svn: 3975
 2002-09-29 21:41:38 +00:00
Vikram S. Adve be55f2dd2c Convert DIRS to PARALLEL_DIRS. They can be built independently. 
llvm-svn: 3972
 2002-09-29 11:52:14 +00:00
Chris Lattner d57f3f5073 - Further cleanups of LICM pass, remove extra work from previous implementation 
- Do not clone instructions then insert clone outside of loop.  Just move them.

llvm-svn: 3951
 2002-09-26 19:40:25 +00:00
Chris Lattner f64f2d3fb3 Improve comments, doxygenize more 
llvm-svn: 3950
 2002-09-26 16:52:07 +00:00
Chris Lattner 718b221ff8 Clean up LICM significantly now that it is guaranteed to have loop preheaders 
llvm-svn: 3947
 2002-09-26 16:38:03 +00:00
Chris Lattner ca056914c6 Change pass name to something sane 
llvm-svn: 3946
 2002-09-26 16:37:37 +00:00
Chris Lattner d771fdfd75 Loop invariant code motion now depends on the LoopPreheader pass. Dead code 
has not yet been removed.

llvm-svn: 3945
 2002-09-26 16:19:31 +00:00
Chris Lattner bedbd6bc16 - Cleanup break-crit-edges pass by making SplitCriticalEdge a member method. 
- break-crit-edges pass does not invalidate loop-preheader pass.

llvm-svn: 3944
 2002-09-26 16:18:51 +00:00
Chris Lattner 61992f66d8 Checkin new loop-preheader insertion pass. 
llvm-svn: 3942
 2002-09-26 16:17:31 +00:00
Chris Lattner 870a4a5bb4 Converted SimpleStructMutation to take TargetData as a required pass. 
llvm-svn: 3932
 2002-09-26 00:17:21 +00:00
Chris Lattner 3cab9f0396 Change LowerAllocations pass to 'require' TargetData instead of it being 
passed in.

llvm-svn: 3929
 2002-09-25 23:47:47 +00:00
Chris Lattner b408154f5f - Fix bug: Mem2Reg/2002-05-01-ShouldNotPromoteThisAlloca.ll 
llvm-svn: 3917
 2002-09-24 21:19:41 +00:00
Chris Lattner 4357e54760 Eliminate extraneous #include 
llvm-svn: 3916
 2002-09-24 21:18:40 +00:00
Chris Lattner d6dcd8ec32 Fix bug: SimplifyCFG/2002-09-24-PHIAssertion.ll 
llvm-svn: 3913
 2002-09-24 16:09:17 +00:00
Chris Lattner c05ad96803 - Do not expose Critical Edge breaking mechanics outside the BCE pass, thus 
removing it from Transforms/Local.h and from Transforms/Utils/*

llvm-svn: 3911
 2002-09-24 15:52:01 +00:00
Chris Lattner 75f80bd0b6 - Do not expose Critical Edge breaking mechanics outside the BCE pass, thus 
removing it from Transforms/Local.h and from Transforms/Utils/*

llvm-svn: 3910
 2002-09-24 15:51:56 +00:00
Chris Lattner b4e7e22be3 Correlated Exprs pass now requires BCE pass instead of doing it manually 
llvm-svn: 3908
 2002-09-24 15:43:56 +00:00
Chris Lattner 4bec665b09 - Expose passinfo from BreakCriticalEdges pass so that it may be "Required" 
by other passes.  Make BCE pass be in anonymous namespace now.

llvm-svn: 3907
 2002-09-24 15:43:12 +00:00
Chris Lattner 5325c5f340 Minor cleanups 
llvm-svn: 3904
 2002-09-24 00:09:26 +00:00
Chris Lattner b03832d5d0 Add new BreakCriticalEdges pass 
llvm-svn: 3903
 2002-09-24 00:08:39 +00:00
Chris Lattner 555518c70f Optimize away cases like: 
%cast109 = cast uint %cast212 to short          ; <short> [#uses=1]
        %cast214 = cast short %cast109 to uint          ; <uint> [#uses=1]
        %cast215 = cast uint %cast214 to short          ; <short> [#uses=1]

llvm-svn: 3897
 2002-09-23 23:39:43 +00:00
Chris Lattner 28d103548d Fix: ConstantMerge/2002-09-23-CPR-Update.ll 
Basically, this bug boiled down to calling replaceUsesOfWith on a constant,
which changed it's shape in an illegal way.  This pass now goes through all
of the trouble neccesary to do the replacement on constants.

llvm-svn: 3895
 2002-09-23 23:00:46 +00:00
Chris Lattner 7ccb217f21 * Fix bug: CorrelatedExprs/2002-09-23-PHIUpdateBug.ll 
* Make sure "Changed" is updated correctly

llvm-svn: 3891
 2002-09-23 20:06:22 +00:00
Chris Lattner 4037a261d8 Insert resolved constants into the global map so they are reused correctly. 
This bug was exposed linking the SPEC benchmark suite.

llvm-svn: 3888
 2002-09-23 18:14:15 +00:00
Chris Lattner facc751260 Don't insert a PHI node to merge "returns" from an inlined function if there 
is only a single return from the function!

llvm-svn: 3878
 2002-09-22 18:41:25 +00:00
Anand Shukla 77dca14403 Added checking threshold 
llvm-svn: 3864
 2002-09-20 16:44:35 +00:00
Anand Shukla ea77a493ff split retracing into a separate file 
llvm-svn: 3809
 2002-09-18 03:55:26 +00:00
Misha Brukman ebcd1d7c16 Removed unnecessary #includes. 
llvm-svn: 3802
 2002-09-18 02:07:57 +00:00
Misha Brukman 892f59fcb2 Fixed typo. 
llvm-svn: 3801
 2002-09-18 00:42:45 +00:00
Chris Lattner 22cbac6511 There is a #define in some header that conflicts with INFINITY, rename it. 
llvm-svn: 3797
 2002-09-17 23:46:33 +00:00
Chris Lattner a8339e3613 Fix bug: test/Regression/Transforms/InstCombine/2002-09-17-GetElementPtrCrash.ll 
Thanks to Casey for finding it!

llvm-svn: 3783
 2002-09-17 21:05:42 +00:00
Chris Lattner afb4fc189c Fix FunctionInlining pass assertion failure: 
ilist:104: failed assertion `Traits::getNext(NodePtr) != 0 && "Dereferencing end()!"'

llvm-svn: 3768
 2002-09-16 22:30:20 +00:00
Chris Lattner ec3936ac0d Fix: test/Regression/LLC/badidx.c problem 
llvm-svn: 3763
 2002-09-16 18:32:33 +00:00
Vikram S. Adve dba59921d7 Extract most of the transformation into an externally accessible 
function -- DecomposeArrayRef(GetElementPtrInst* GEP) -- that can
be invoked on a single instruction at a time.

llvm-svn: 3755
 2002-09-16 16:40:07 +00:00
Anand Shukla f94ad68e56 Incorporated changes in alloca and getElementPointer instruction 
llvm-svn: 3733
 2002-09-16 05:26:51 +00:00
Anand Shukla d9a6af0c27 Incorporated changes in alloca instruction 
llvm-svn: 3732
 2002-09-16 05:24:49 +00:00
Chris Lattner 154cf64436 Fix bug I introduced 
llvm-svn: 3719
 2002-09-14 19:33:16 +00:00
Misha Brukman 2e8086f046 Function.h is unnecessary when Module.h is included. 
llvm-svn: 3716
 2002-09-14 03:04:02 +00:00
Misha Brukman 09d24c7374 Following Chris's advice, I'm pruning some unnecessary .h includes that I'm 
noticing. Since Module includes Function, and eventually, BasicBlock and
GlobalVariable, the last three are unnecessary to be included directly.

llvm-svn: 3713
 2002-09-14 02:06:53 +00:00
Chris Lattner fc91ee91e8 Change the MallocInst & AllocaInst ctors to take the allocated type, not the 
pointer type returned.

llvm-svn: 3711
 2002-09-13 22:28:50 +00:00
Chris Lattner 322bf4f3a9 Change the MallocInst & AllocaInst ctors to take the allocated type, not the 
pointer type returned.

llvm-svn: 3710
 2002-09-13 22:28:45 +00:00
Chris Lattner 674c9ff585 Fix bug I introduced with one of my previous changes. 
Thanks fly out to Nick for noticing it!  :)

llvm-svn: 3691
 2002-09-12 19:00:43 +00:00
Chris Lattner 136dab7d86 - Change getelementptr instruction to use long indexes instead of uint 
indexes for sequential types.

llvm-svn: 3682
 2002-09-11 01:21:33 +00:00
Chris Lattner b9d9e0ff8d - Change getelementptr instruction to use long indexes instead of uint 
indexes for sequential types.

llvm-svn: 3681
 2002-09-11 01:21:29 +00:00
Chris Lattner cbc532603a Fix the last of the silly bugs I just introduced. :( 
llvm-svn: 3674
 2002-09-10 23:46:10 +00:00
Chris Lattner 3d7720ae7d Fix bugs in previous checkins 
llvm-svn: 3673
 2002-09-10 23:31:28 +00:00
Chris Lattner 9674b869e5 Fix bug in previous checkin 
llvm-svn: 3672
 2002-09-10 23:31:12 +00:00
Chris Lattner 55f3d94b40 Add cannonicalization of shl X, 1 -> add X, X 
llvm-svn: 3671
 2002-09-10 23:04:09 +00:00
Chris Lattner e8c927f71a Fix minor problems in previous checkin 
llvm-svn: 3669
 2002-09-10 22:52:51 +00:00
Chris Lattner db3f9bc948 Fix minor problems in previous checkin 
llvm-svn: 3668
 2002-09-10 22:52:49 +00:00
Chris Lattner f80f7b02b7 Clean up code due to auto-insert constructors 
llvm-svn: 3666
 2002-09-10 22:38:49 +00:00
Chris Lattner a239e6879d Clean up code due to auto-insert constructors 
llvm-svn: 3665
 2002-09-10 22:38:47 +00:00
Chris Lattner 97ff99cdf9 Clean up code 
llvm-svn: 3664
 2002-09-10 22:38:06 +00:00
Chris Lattner 61c83bf12f Fix bug: test/Regression/Transforms/LevelRaise/2002-09-10-PointerAdds.ll 
llvm-svn: 3658
 2002-09-10 19:42:53 +00:00
Chris Lattner 28a8d2468a Simplify code (somtimes dramatically), by using the new "auto-insert" feature 
of instruction constructors.

llvm-svn: 3656
 2002-09-10 17:04:02 +00:00
Chris Lattner 5c447863d5 Simplify code (somtimes dramatically), by using the new "auto-insert" feature 
of instruction constructors.

llvm-svn: 3655
 2002-09-10 17:03:06 +00:00
Chris Lattner 4184bcc701 * Clean up code a little bit 
* Fix bug: test/Regression/Transforms/IndVarsSimplify/2002-09-09-PointerIndVar.ll

llvm-svn: 3644
 2002-09-10 05:24:05 +00:00
Chris Lattner e103d178c5 Hack unneccesary now that shifts of pointers are no longer legal! 
llvm-svn: 3640
 2002-09-10 03:50:54 +00:00
Chris Lattner ff16f07017 Disallow creation of pointer typed shift instructions 
llvm-svn: 3637
 2002-09-09 20:25:21 +00:00
Chris Lattner 5f00d66cc3 Factor silly code duplication out 
llvm-svn: 3627
 2002-09-08 21:47:54 +00:00
Chris Lattner b8bba6f765 Fix Bug: test/Regression/Transforms/InstCombine/2002-09-08-PointerShiftBug.ll 
llvm-svn: 3626
 2002-09-08 21:39:07 +00:00
Chris Lattner bdb147c373 Minor simplification 
llvm-svn: 3619
 2002-09-08 18:55:04 +00:00
Chris Lattner 1871472e14 Initial checkin of Correlated Expression Elimination Pass 
llvm-svn: 3599
 2002-09-06 18:41:55 +00:00
Chris Lattner 6a5364e46f Fix file header to be accurate, instead of something I just copied and pasted. 
llvm-svn: 3591
 2002-09-06 03:59:56 +00:00
Chris Lattner 50dd6724a2 Fix bug with critical edge splitting code where it wouldn't update PHI nodes 
in the old destination block to indicate that the value flows from the new
edge splitting block, not from the original multi-successor block.

llvm-svn: 3590
 2002-09-06 03:51:45 +00:00
Chris Lattner c2cd504569 Check in the implementation of critical edge detection and splitting 
llvm-svn: 3588
 2002-09-06 02:35:34 +00:00
Chris Lattner b0b412e66e - Renamed Type::isIntegral() to Type::isInteger() 
- Added new method Type::isIntegral() that is the same as isInteger, but
    also accepts bool.

llvm-svn: 3574
 2002-09-03 01:08:28 +00:00
Chris Lattner bc6bdc2992 - Renamed Type::isIntegral() to Type::isInteger() 
- Added new method Type::isIntegral() that is the same as isInteger, but
    also accepts bool.

llvm-svn: 3573
 2002-09-03 01:07:35 +00:00
Chris Lattner 99f48c614d Add constant prop & DIE to InstCombine, so it cleans up after itself 
llvm-svn: 3568
 2002-09-02 04:59:56 +00:00
Chris Lattner dd6522e7a0 - Implement SCCP of getelementptr instructions 
- Implement SCCP of globals into ConstantExprs hopefully opening new
   opportunities for more SCCP.

llvm-svn: 3555
 2002-08-30 23:39:00 +00:00
Chris Lattner ed39ccae8d - Eliminate the last traces of the 'analysis' namespace 
llvm-svn: 3550
 2002-08-30 22:53:53 +00:00
Chris Lattner 1b09a9ab68 Really minor cleanups 
llvm-svn: 3549
 2002-08-30 22:53:30 +00:00
Chris Lattner b2a31090b1 - GCSE now no longer counts instructions not removed (due to no common 
dominator as being removed)
  - GCSE now uses new Value #'ing interface, instead of dealing with AA itself
  - GCSE worklist implementation much simpler, class cleaned up.

llvm-svn: 3533
 2002-08-30 20:22:29 +00:00
Chris Lattner 65217ff294 - instcombine demorgan's law: and (not A), (not B) == not (or A, B) 
llvm-svn: 3495
 2002-08-23 18:32:43 +00:00
Chris Lattner 02fe752fbd Eliminated the MemAccessInst class, folding contents into GEP class. 
llvm-svn: 3488
 2002-08-22 23:37:24 +00:00
Chris Lattner dfb3a2cd07 Eliminated the MemAccessInst class, folding contents into GEP class. 
llvm-svn: 3487
 2002-08-22 23:37:20 +00:00
Chris Lattner cd709cbf53 Load & StoreInst no longer derive from MemAccessInst, so we don't have 
to handle indexing anymore

llvm-svn: 3485
 2002-08-22 22:49:05 +00:00
Chris Lattner 62b42ce764 *** empty log message *** 
llvm-svn: 3483
 2002-08-22 22:48:32 +00:00
Chris Lattner a51fa88702 Add capability of using pointer analysis to LICM 
llvm-svn: 3478
 2002-08-22 21:39:55 +00:00
Chris Lattner faea121df7 Remove long obsolete comments 
llvm-svn: 3476
 2002-08-22 21:25:54 +00:00
Chris Lattner f6c0efa754 Instcombine PHI's of the form %PN = phi PN, X into X and 
%PN = phi PN, PN, PN into 0 (because the phi must not be reachable)

llvm-svn: 3470
 2002-08-22 20:22:01 +00:00
Chris Lattner 879cb97f63 Convert GCSE pass to use new alias analysis infrastructure 
llvm-svn: 3463
 2002-08-22 18:24:48 +00:00
Chris Lattner bb53bba9d0 Do not generate load/store instructions with indexing. 
llvm-svn: 3461
 2002-08-22 16:41:31 +00:00
Chris Lattner c86203ace3 - Split Dominators.h into Dominators.h & PostDominators.h 
llvm-svn: 3432
 2002-08-21 23:43:50 +00:00
Chris Lattner e49f299041 Do not generate loads/stores with indexing 
llvm-svn: 3422
 2002-08-21 22:11:33 +00:00
Chris Lattner 829ecb6dcd Remove extraneous #includes 
llvm-svn: 3421
 2002-08-21 22:11:14 +00:00
Chris Lattner 67a806ed90 Do not create load/stores with indexes 
llvm-svn: 3420
 2002-08-21 22:10:52 +00:00
Chris Lattner 6f66bc8016 Remove an optimization that isn't. 
llvm-svn: 3419
 2002-08-21 22:10:06 +00:00
Chris Lattner 1a386b6a73 - Do not expose ::ID from any of the analyses anymore. 
llvm-svn: 3417
 2002-08-21 17:09:49 +00:00
Chris Lattner 325398c6a4 fixed bug: test/Regression/Linker/2002-08-20-ConstantExpr.ll 
llvm-svn: 3412
 2002-08-20 19:35:11 +00:00
Chris Lattner b8d6e40ed7 - instcombine (~(a < b)) into (a >= b) 
llvm-svn: 3406
 2002-08-20 18:24:26 +00:00
Chris Lattner 9cd1e66155 - implemented instcombine of phi (X, X, X) -> X 
llvm-svn: 3397
 2002-08-20 15:35:35 +00:00
Chris Lattner 8f3acc6fde - Made GlobalDCE worklist driven, making it more successful. Now can handle 
cases like: test/Regression/Transforms/GlobalDCE/2002-08-17-WorkListTest.ll

llvm-svn: 3381
 2002-08-18 01:28:30 +00:00
Chris Lattner c59af1d257 Promote getelementptr instructions to constexprs if we can. 
llvm-svn: 3368
 2002-08-17 22:21:59 +00:00
Chris Lattner 3732acab85 Handle more cases of cast-of-cast in more general forms. 
llvm-svn: 3347
 2002-08-15 16:15:25 +00:00
Chris Lattner 0bb75910e2 Implement capability to fold this: 
uint %test4(int %A, int %B) {
        %COND = setlt int %A, %B                ; <bool> [#uses=1]
        %result = cast bool %COND to uint               ; <uint> [#uses=1]
        ret uint %result
}
into a single cast instruction.

llvm-svn: 3339
 2002-08-14 23:21:10 +00:00
Chris Lattner 768c2b6bfe Avoid creating 'load X, 0' instead of just 'load X' 
This _trivial_ change causes GCSE and LICM to be much more effective at
hoisting loads.  Before it would not be able to eliminate 'load X' if there
was just a dominating 'load X, 0' because the expressions were not identical.

llvm-svn: 3337
 2002-08-14 22:11:52 +00:00
Chris Lattner 313fd77767 Avoid inserting an entry block unless we need it 
llvm-svn: 3336
 2002-08-14 21:35:02 +00:00
Chris Lattner 330b7ac76c Remove support for Not ConstantExpr. This simplifies the unary case to only 
have to support the cast instruction, so the function is renamed to getCast.

llvm-svn: 3328
 2002-08-14 18:24:09 +00:00
Chris Lattner b80b69cc3e Fix bug introduced in last checkin due to CastInst not being visible 
llvm-svn: 3327
 2002-08-14 18:22:19 +00:00
Chris Lattner b193ff8f70 Remove support for NOT instruction 
llvm-svn: 3323
 2002-08-14 18:18:02 +00:00
Chris Lattner 0f4093938a Remove extra #includes 
llvm-svn: 3322
 2002-08-14 18:17:32 +00:00
Chris Lattner 6e1a1b1289 Remove support for unary operators 
llvm-svn: 3318
 2002-08-14 17:53:45 +00:00
Chris Lattner 31ae863284 - Fix InstCombine pass to not generate or process NOT instructions 
- Fixed testcases to not use them either.

llvm-svn: 3315
 2002-08-14 17:51:49 +00:00
Chris Lattner b3c2af69fe Remove support for NOT instruction 
llvm-svn: 3313
 2002-08-14 17:45:39 +00:00
Chris Lattner 8328263606 - Rename ConstantGenericIntegral -> ConstantIntegral 
llvm-svn: 3300
 2002-08-13 17:50:24 +00:00
Chris Lattner e6794490ec * Factor a bunch of code by using ReplaceInstUsesWith 
* Move isMaxValue, isMinValue, isAllOnesValue to Constants.h

llvm-svn: 3290
 2002-08-12 21:17:25 +00:00
Chris Lattner 6d14f2a7ae New functionality for instcombine: 
* New ReplaceInstUsesWith function to factor out tons of common code
     This needs to be used more in the future still, but it's a good start
   * New InsertNewInstBefore to allow multi-instruction replacements
   * Change getMaxValue functions to isAllOnesValue function, which doesn't
     have to CREATE/lookup a new constant.  Also the name is accurate
   * Add new isMaxValue, isMinValue, isMaxValueMinusOne, isMinValuePlusOne
     functions:  This should be moved to Constant* classes eventually
   * Implement xor X, ALLONES -> not X
   * Fold ALL setcc's of booleans away
   * Handle various SetCC's for integers against values at the end of their
     ranges, possibly off by one.  This implements the setcc-strength-reduce.ll
     testcase.

llvm-svn: 3286
 2002-08-09 23:47:40 +00:00
Chris Lattner ed7ac42c6a Initial checkin of the "Hello World" Pass. 
llvm-svn: 3266
 2002-08-08 20:10:38 +00:00
Chris Lattner f0ed55d1ee - Cleaned up the interface to AnalysisUsage to take analysis class names 
instead of ::ID's.
 - Pass::getAnalysis<> now no longer takes an optional argument

llvm-svn: 3265
 2002-08-08 19:01:30 +00:00
Chris Lattner 40eb9dafed - Cleaned up the interface to AnalysisUsage to take analysis class names 
instead of ::ID's.
 - Pass::getAnalysis<> now no longer takes an optional argument

llvm-svn: 3264
 2002-08-08 19:01:28 +00:00
Chris Lattner 650449a1df Remove extraneous #includes 
llvm-svn: 3262
 2002-08-08 19:00:34 +00:00
Vikram S. Adve 4737dd7268 Eliminate cast instructions: use only GEPs in decomposed sequence. 
Don't decompose if there are 2 indices with 0 as first index.
Compute Changed flag correctly in runOnBasicBlock().

llvm-svn: 3233
 2002-08-03 13:21:15 +00:00
Chris Lattner 650b6da0f9 Fix bug: test/Regression/Transforms/InstCombine/2002-08-02-CastTest.ll 
Implement feature: Cast's can now be converted to bitwise AND expressions.

llvm-svn: 3225
 2002-08-02 20:00:25 +00:00
Chris Lattner ae7a0d39fd * Cleanups of instcombine 
- Reenable gep (gep x) -> x
   - Make instcombine do dead instruction elimination where it's really
     easy.  Now visitors don't have to ensure they aren't not processing
     dead instructions.

llvm-svn: 3222
 2002-08-02 19:29:35 +00:00
Chris Lattner f56bd89918 Fix bug: test/Regression/Transforms/GCSE/2002-05-21-NoSharedDominator.ll 
llvm-svn: 3215
 2002-08-02 18:06:01 +00:00
Chris Lattner 7ff5a21f0f Remove unneccesary #inlcude 
llvm-svn: 3200
 2002-08-01 20:01:02 +00:00
Chris Lattner 50ead8c492 Implement the other half of a feature advertised by OperandConvertableToType. 
This fixes bug: test/Regression/Transforms/LevelRaise/2002-07-31-AssertionFailure.ll

llvm-svn: 3193
 2002-07-31 22:31:34 +00:00
Chris Lattner 47cc3669ff * Indent class into anonymous namespace, filling up the diff with garbage 
* Internalize global variables with initializers
* Add new stat to track global variable internalization
* Only count functions that were not internal before in internalized function
  count

llvm-svn: 3163
 2002-07-30 19:48:44 +00:00
Chris Lattner a13a2dac7e Cleanup ConstantExpr handling: 
* Correctly delete TypeHandles in AsmParser.  In addition to not leaking
   memory, this prevents a bug that could have occurred when a type got
   resolved that the constexpr was using
 * Check for errors in the AsmParser instead of hitting assertion failures
   deep in the code
 * Simplify the interface to the ConstantExpr class, removing unneccesary
   parameters to the ::get* methods.
 * Rename the 'getelementptr' version of ConstantExpr::get to
   ConstantExpr::getGetElementPtr

llvm-svn: 3160
 2002-07-30 18:54:22 +00:00
Chris Lattner beb40f9f6c Remove FIXME's that aren't really needed after all. 
llvm-svn: 3158
 2002-07-30 16:38:54 +00:00
Chris Lattner ed37856e69 Fix bug with last patch which would occur when a call returned void and we 
attempted to assign it a name.

llvm-svn: 3142
 2002-07-30 02:42:49 +00:00
Chris Lattner aacadd1a95 * Make sure the resolved function call instructions get the name from the 
old call instruction
* Implement conversion of return values for calls.  This fixes bug:
   test/Regression/Transforms/FunctionResolve/retmismatch3.ll

llvm-svn: 3140
 2002-07-30 00:50:49 +00:00
Chris Lattner 33fca976ee * Fix bug: test/Regression/Transforms/ADCE/2002-07-17-AssertionFailure.ll 
which was caused by us not running the "drop references of dead
  instructions" code when there were no basic blocks that were dead.

  We still don't want to do some of the stuff we do if there are dead
  basic blocks, but we DO want to drop references of dead instructions,
  so we factor the common code out to a new method.

llvm-svn: 3137
 2002-07-30 00:22:34 +00:00
Chris Lattner 3be5d0b892 Add code to ensure that no PHI nodes are left laying around with their 
arguments dropped.  This fixes bug:
   test/Regression/Transforms/ADCE/2002-07-17-PHIAssertion.ll

llvm-svn: 3134
 2002-07-29 23:40:46 +00:00
Chris Lattner b17274ebf6 Implement a new RemoveSuccessor function 
llvm-svn: 3131
 2002-07-29 22:32:08 +00:00
Chris Lattner ee420b7f9d Fix bug: test/Regression/Transforms/ADCE/2002-07-29-Segfault.ll 
llvm-svn: 3129
 2002-07-29 22:31:39 +00:00
Chris Lattner 1cec4d90cd Allow folding of basic blocks that have PHI nodes in them, fixing "bug": 
test/Regression/Transforms/SimplifyCFG/2002-06-24-PHINode.ll

llvm-svn: 3128
 2002-07-29 21:26:30 +00:00
Chris Lattner 2675007573 * Standardize how analysis results/passes as printed with the print() virtual 
methods
* Eliminate AnalysisID:  Now it is just a typedef for const PassInfo*
* Simplify how AnalysisID's are initialized
* Eliminate Analysis/Writer.cpp/.h: incorporate printing functionality into
  the analyses themselves.

llvm-svn: 3116
 2002-07-27 01:12:17 +00:00
Chris Lattner 96a0dfa33e * Standardize how analysis results/passes as printed with the print() virtual 
methods
* Eliminate AnalysisID:  Now it is just a typedef for const PassInfo*
* Simplify how AnalysisID's are initialized
* Eliminate Analysis/Writer.cpp/.h: incorporate printing functionality into
  the analyses themselves.

llvm-svn: 3115
 2002-07-27 01:12:15 +00:00
Chris Lattner c8b7092e54 * Add support for different "PassType's" 
* Add new RegisterOpt/RegisterAnalysis templates for registering passes that
  are to show up in opt or analyze
* Register Analyses now
* Change optimizations to use RegisterOpt instead of RegisterPass
* Add support for different "PassType's"
* Add new RegisterOpt/RegisterAnalysis templates for registering passes that
  are to show up in opt or analyze
* Register Analyses now
* Change optimizations to use RegisterOpt instead of RegisterPass
* Remove getPassName implementations from various subclasses

llvm-svn: 3113
 2002-07-26 21:12:46 +00:00
Chris Lattner a2c0985980 * Add support for different "PassType's" 
* Add new RegisterOpt/RegisterAnalysis templates for registering passes that
  are to show up in opt or analyze
* Register Analyses now
* Change optimizations to use RegisterOpt instead of RegisterPass
* Add support for different "PassType's"
* Add new RegisterOpt/RegisterAnalysis templates for registering passes that
  are to show up in opt or analyze
* Register Analyses now
* Change optimizations to use RegisterOpt instead of RegisterPass
* Remove getPassName implementations from various subclasses

llvm-svn: 3112
 2002-07-26 21:12:44 +00:00
Chris Lattner 64eea749de *** empty log message *** 
llvm-svn: 3105
 2002-07-26 18:40:14 +00:00
Chris Lattner 10073a9080 *** empty log message *** 
llvm-svn: 3075
 2002-07-25 06:17:51 +00:00
Chris Lattner 2d380955dd *** empty log message *** 
llvm-svn: 3072
 2002-07-24 22:40:39 +00:00
Chris Lattner 99a53f6aa9 Eliminate several include/llvm/Transforms/IPO/*.h files, moving their contents into IPO.h 
llvm-svn: 3043
 2002-07-24 17:12:05 +00:00
Chris Lattner 42706e4dec Merge ChangeAllocations into scalar.h 
llvm-svn: 3038
 2002-07-23 22:04:17 +00:00
Chris Lattner 5afe2f2ccd Rename header 
llvm-svn: 3037
 2002-07-23 22:04:02 +00:00
Chris Lattner 0db86893eb Cleanup and simplify code 
llvm-svn: 3036
 2002-07-23 22:03:41 +00:00
Chris Lattner b0cec70cbc Incorporate ConstantMerge.h into IPO.h 
llvm-svn: 3035
 2002-07-23 19:57:40 +00:00
Chris Lattner 417ae51c17 Rename LevelChange.h to RaisePointerReferences.h 
llvm-svn: 3034
 2002-07-23 19:57:08 +00:00
Chris Lattner b28b680155 *** empty log message *** 
llvm-svn: 3016
 2002-07-23 18:06:35 +00:00
Chris Lattner 6788f25f99 * Remove getPassName implementation 
* Register all Passes

llvm-svn: 3015
 2002-07-23 18:06:30 +00:00
Chris Lattner 6d216fdc1f * Cleanup the pass a bit more, making it more object oriented. 
* Split the two behaviors of the InsertTraceCode class into two subclasses
* Register Passes

llvm-svn: 3014
 2002-07-23 18:04:15 +00:00
Chris Lattner 75a210a63d * Break the two different behaviors of SimpleStructMutation into two subclasses 
* Register the passes

llvm-svn: 3013
 2002-07-23 18:03:11 +00:00
Chris Lattner aadb84f7ff * Make the ctor take a TargetData even though it's not using it yet 
* Register the pass

llvm-svn: 3012
 2002-07-23 18:02:23 +00:00
Chris Lattner 784d54ba4b * Remove lots of dead stuff 
* Register Pass

llvm-svn: 3011
 2002-07-23 18:01:39 +00:00
Chris Lattner a896b08b5c *** empty log message *** 
llvm-svn: 3002
 2002-07-23 17:52:38 +00:00
Chris Lattner df7633fb5f Hide extra argument 
llvm-svn: 2986
 2002-07-22 02:17:27 +00:00
Chris Lattner f5cad15a67 *** empty log message *** 
llvm-svn: 2985
 2002-07-22 02:10:13 +00:00
Anand Shukla 2a78633b4a comeented out debug printing 
llvm-svn: 2980
 2002-07-21 09:41:18 +00:00
Anand Shukla fd61c60864 minor corrections 
llvm-svn: 2971
 2002-07-18 20:56:47 +00:00
Chris Lattner 6801fdf009 Seperate stats for DCE'd functions and vars 
llvm-svn: 2961
 2002-07-18 06:40:04 +00:00
Chris Lattner 6f21961d67 *** empty log message *** 
llvm-svn: 2959
 2002-07-18 04:43:20 +00:00
Chris Lattner 72f9a86d1e Only functions with external linkage can be resolved to function declarations. 
This change fixes programs that have multiple functions named the same thing,
where are least one of them is static/internal.

llvm-svn: 2954
 2002-07-18 03:01:24 +00:00
Chris Lattner f0cfe654d7 * Rewrite loop to be slightly more efficient (arguably) 
* Fix a MAJOR thinko that was causing bad links to happen on Spec

llvm-svn: 2953
 2002-07-18 02:31:03 +00:00
Chris Lattner dfe041880d * Correctly get prototype for void*malloc(size_t) 
llvm-svn: 2951
 2002-07-18 00:18:01 +00:00
Chris Lattner 0b0758f916 Implement linking of ConstExprs 
llvm-svn: 2946
 2002-07-18 00:13:08 +00:00
Chris Lattner 963b68afb8 Anand forgot to check in the makefile corresponding to his previous change 
which eliminated the EmitFunctions directory

llvm-svn: 2937
 2002-07-17 17:13:01 +00:00
Chris Lattner 60ebba51c4 * Remove dead code from ExprTypeConvert.cpp 
- I->use_empty() can never be true because of the IHolder's
* Fix bug: test/Regression/Transforms/LevelRaise/2002-07-16-SourceAndDestCrash.ll
   - Add a new NewCasts member to VMC to keep track of casts that have been
     created and to ensure there is always a reference to the cast.
   - Extend ValueHandle a bit so it can be used in an STL container
   - Make sure we destroy the ValueMapCache before verifying the function
     in LevelRaise.cpp

llvm-svn: 2936
 2002-07-17 17:11:33 +00:00
Chris Lattner 5ec260a714 * Add a bunch of debugging features to LevelRaise 
- Verify the function every time it is exprconverted if DEBUG is on
  - Provide a way to start exprconversion AT a specific instruction.

llvm-svn: 2934
 2002-07-16 23:49:24 +00:00
Chris Lattner 4cccad7555 Avoid !sized assertion failure if Ty is not a sized type 
llvm-svn: 2933
 2002-07-16 22:29:37 +00:00
Chris Lattner 811bd41229 Fix bug: test/Regression/Transforms/LevelRaise/2002-07-16-RaiseCrash2.ll 
llvm-svn: 2932
 2002-07-16 21:41:31 +00:00
Anand Shukla d5f25dc1eb Moved over EmitFunctions to this library 
llvm-svn: 2928
 2002-07-16 18:58:08 +00:00
Anand Shukla 09038eec7b removed this directory 
llvm-svn: 2927
 2002-07-16 18:56:29 +00:00
Anand Shukla 506f8516c6 Moved EmitFunctions.cpp up to instrumentation directory 
llvm-svn: 2926
 2002-07-16 18:55:55 +00:00
Chris Lattner 0610fc933c Bugfix to previous checkin 
llvm-svn: 2924
 2002-07-16 18:12:55 +00:00
Chris Lattner 6001a92926 * Cleanup pass 
* The global variable cannot be internal or else we cannot use it!
* Always add a function to the table, even if it only has a single basic
  block.

llvm-svn: 2921
 2002-07-16 17:42:54 +00:00
Chris Lattner 036a134528 * Add assertion to ExprTypeConvert to detect error earlier than without it 
* Fix bug in LevelRaise.cpp, correcting this problem:
    test/Regression/Transforms/LevelRaise/2002-07-16-RaiseCrash.ll

llvm-svn: 2920
 2002-07-16 17:33:13 +00:00
Anand Shukla 9a3e4649d5 Added EmitFunctions directory 
llvm-svn: 2883
 2002-07-12 20:12:07 +00:00
Anand Shukla 5bdc8b6326 Initial makefile 
llvm-svn: 2882
 2002-07-12 20:11:24 +00:00
Anand Shukla 127412b0da Initial version: adds a function table to output code 
llvm-svn: 2881
 2002-07-12 20:10:50 +00:00
Chris Lattner b2c5cb2525 Disable folding g-e-p instructions into loads and stores. 
llvm-svn: 2870
 2002-07-10 22:37:17 +00:00
Chris Lattner 87d180e7c6 Disable pool allocation stuff until data structure analysis is sorted back out 
llvm-svn: 2869
 2002-07-10 22:36:47 +00:00
Vikram S. Adve 4b581be494 Fix iteration and InsertPos bugs introduced when Chris changed over to ilist. 
llvm-svn: 2840
 2002-07-08 23:37:07 +00:00
Anand Shukla 2d3d20b09f changes BBsorting and oredering 
llvm-svn: 2817
 2002-07-08 19:37:06 +00:00
Anand Shukla ff72c798ac small corrections 
llvm-svn: 2816
 2002-07-08 19:36:39 +00:00
Anand Shukla 11f4262874 changed function numbering 
llvm-svn: 2815
 2002-07-08 19:36:01 +00:00
Chris Lattner 33422fedc2 *** empty log message *** 
llvm-svn: 2813
 2002-06-30 16:25:25 +00:00
Chris Lattner a3a1ba1d6a Clean up anands patch 
llvm-svn: 2812
 2002-06-30 16:25:21 +00:00
Anand Shukla 2ac04a0083 changes to make it compatible with 64bit gcc 
llvm-svn: 2795
 2002-06-25 21:18:19 +00:00
Anand Shukla 21906891d7 additions and bug fixes 
llvm-svn: 2794
 2002-06-25 21:14:58 +00:00
Anand Shukla af26b39bc5 added include<iostream> for cerr 
llvm-svn: 2793
 2002-06-25 21:12:25 +00:00
Anand Shukla 2bc6419a82 changes to make it compatible with 64bit gcc 
llvm-svn: 2792
 2002-06-25 21:07:58 +00:00
Anand Shukla 458496c060 changes to make it compatible with 64bit gcc 
llvm-svn: 2791
 2002-06-25 20:55:50 +00:00
Chris Lattner 113f4f4609 MEGAPATCH checkin. 
For details, See: docs/2002-06-25-MegaPatchInfo.txt

llvm-svn: 2779
 2002-06-25 16:13:24 +00:00
Chris Lattner 7076ff29ed MEGAPATCH checkin. 
For details, See: docs/2002-06-25-MegaPatchInfo.txt

llvm-svn: 2778
 2002-06-25 16:13:21 +00:00
Chris Lattner fda72b1aad *** empty log message *** 
llvm-svn: 2777
 2002-06-25 16:12:52 +00:00
Chris Lattner 2ae9cda097 Remove DynamicConstantMerge pass, because it did not fit in with the Pass 
system correctly.

llvm-svn: 2772
 2002-06-25 15:55:29 +00:00
Chris Lattner 6eeda027c7 Remove "fixers" for problems in GCC generated code that cannot be generated 
anymore.

llvm-svn: 2771
 2002-06-25 15:55:03 +00:00
Anand Shukla 8c1c854022 Relocating Graph.h 
llvm-svn: 2770
 2002-06-25 14:28:55 +00:00
Chris Lattner 194138cd08 Avoid deleting individual instructions until AFTER dead blocks have dropped 
their references.  This fixes bug:
    test/Regression/Transforms/ADCE/2002-05-28-Crash*.ll

llvm-svn: 2753
 2002-05-28 21:38:16 +00:00
Chris Lattner ab038d44b0 Simplify the interface to local DCE and Constant prop 
llvm-svn: 2749
 2002-05-26 20:18:18 +00:00
Chris Lattner eef79f1af4 Do not remove type names that contain a . 
llvm-svn: 2747
 2002-05-26 20:17:35 +00:00
Chris Lattner 1eb9e6cc47 Fix "unimplemented features": 
test/Regression/Transforms/FunctionResolve/retmismatch[12].ll

This makes it much more useful for running benchmarks that are missing
prototypes for some functions.

llvm-svn: 2745
 2002-05-24 21:33:26 +00:00
Chris Lattner 5aa9e3e702 Split the FunctionResolution pass out of CleanGCCOutput.cpp. 
llvm-svn: 2742
 2002-05-24 20:42:13 +00:00
Chris Lattner e80124df80 Fix comments to reflect reality 
llvm-svn: 2741
 2002-05-24 20:41:51 +00:00
Chris Lattner e3da2980ad Support programs that do not #include <malloc.h> or give a full prototype 
for malloc and free.  Lots of crufty benchmarks are using stuff like:
char *malloc();
void free();

to forward declare malloc and free.  Now we recognize and raise these forms

llvm-svn: 2740
 2002-05-24 20:29:18 +00:00
Chris Lattner 9c2765d4aa Fold add X, 0 for floating point types as well 
llvm-svn: 2734
 2002-05-23 17:11:38 +00:00
Chris Lattner e1fc2d965f Convert code to use the DEBUG macro so that debug code can simply be 
enabled with the -debug command line option.

llvm-svn: 2721
 2002-05-22 21:56:32 +00:00
Chris Lattner 559f0ee9c9 Fix and implement ADCE to finally work! 
llvm-svn: 2720
 2002-05-22 21:32:16 +00:00
Chris Lattner acd4599e57 Convert transforms over to standardize debugging output on -debug option 
llvm-svn: 2714
 2002-05-22 17:27:12 +00:00
Chris Lattner 71cbd42b98 Use the new DEBUG(x) macro to allow debugging code to be enabled on the commandline 
llvm-svn: 2713
 2002-05-22 17:17:27 +00:00
Chris Lattner a482d52ff4 Fix bug: test/Regression/Transforms/SCCP/2002-05-21-InvalidSimplify.ll 
Improperly handling edges... by not marking them alive properly

llvm-svn: 2707
 2002-05-22 16:07:20 +00:00
Chris Lattner 466a049b67 Add implementation of SimplifyCFG 
llvm-svn: 2701
 2002-05-21 20:50:24 +00:00
Chris Lattner fa7dad8cd5 New CFG Simplification pass: removed from the old DCE pass 
llvm-svn: 2700
 2002-05-21 20:49:37 +00:00
Chris Lattner 4b009adc77 Simplify interface to ConstantFoldTerminator 
llvm-svn: 2697
 2002-05-21 20:04:50 +00:00
Chris Lattner ace7b8d3bd * Change commandline options a bit to be nicer 
* Insert accurate prototypes for functions
* Insert casts to use accurate prototypes

llvm-svn: 2677
 2002-05-20 21:43:59 +00:00
Chris Lattner b710b1fb22 Fix bug: test/Regression/Transforms/SCCP/2002-05-20-MissedIncomingValue.ll 
That was causing a miscompilation of strtol/atoi plus others

llvm-svn: 2669
 2002-05-20 20:48:03 +00:00
Vikram S. Adve 47f37c3404 Hash pointer values to a sequence number to get identical results from 
lli and llc.  This is controlled with options -tracehash on|off.

Also, added an option to specify which functions should be traced.
Particularly useful to reduce output volume in basic-block tracing.

llvm-svn: 2646
 2002-05-19 15:39:02 +00:00
Chris Lattner 7bc532dded * Make debug output conditional on #define 
* Add optimization to rank computation to not recursively search when
  unneccesary.
* More agressively negate expressions to open reassociation opportunities.
* Linearize (A+B)+(C+D) into ((A+B)+C)+D

llvm-svn: 2637
 2002-05-16 04:37:07 +00:00
Chris Lattner cd9837d32e * Fix bug: test/Regression/Transforms/GCSE/2002-05-14-OperandSwap.ll 
By making sure to consider binary expressions identical if their operands
are backwards, but swappable.

llvm-svn: 2629
 2002-05-14 19:57:25 +00:00
Chris Lattner 170ed7b6a3 Fix bug: test/Regression/Transforms/InstCombine/2002-05-14-SubFailure.ll 
llvm-svn: 2627
 2002-05-14 16:44:07 +00:00
Chris Lattner 053c0939e3 Fix bug: test/Regression/Transforms/InstCombine/2002-05-14-TouchDeletedInst.ll 
"This testcase caused instcombine to fail because it got the same instruction on
it's worklist more than once (which is ok), but then deleted the instruction.
Since the inst stayed on the worklist, as soon as it came back up to be
processed, bad things happened, and opt asserted."

llvm-svn: 2623
 2002-05-14 15:24:07 +00:00
Chris Lattner a3c3456e7f Fix a major source of "type unsafety", where a cast is neccesary, but can 
be put either before or after a load.  We chose to cast the value loaded
instead of the pointer to load from.

Fixes bug: test/Regression/Transforms/LevelRaise/2002-05-10-LoadPeephole.ll

llvm-svn: 2621
 2002-05-14 05:23:45 +00:00
Chris Lattner d38ddb1164 Implement elimination of loads 
llvm-svn: 2620
 2002-05-14 05:02:40 +00:00
Chris Lattner 7ab51787ca Trivial cleanups 
llvm-svn: 2617
 2002-05-13 22:04:46 +00:00
Chris Lattner 6ec05f551c Initial checkin of LICM pass 
llvm-svn: 2615
 2002-05-10 22:44:58 +00:00
Chris Lattner 0b18c1d64e Add support for printing out statistics information when -stats is added to 
the command line

llvm-svn: 2601
 2002-05-10 15:38:35 +00:00
Chris Lattner bad1b4dfce Fix some bugs, straighten stuff out, more work needs to be done. 
llvm-svn: 2600
 2002-05-10 15:37:35 +00:00
Chris Lattner da2eddd5c4 * Add support for the -stats command line option to report how much is changed 
* Make cast-of-self-ty DCE the dead cast instruction immediately instead of
  waiting for it to be DCE'd by another sweep over the function.  This speeds
  this up noticably.

llvm-svn: 2597
 2002-05-10 15:29:25 +00:00
Chris Lattner 014ee634ce Initial checkin of the PiNodeInsertion pass 
llvm-svn: 2593
 2002-05-10 05:41:34 +00:00
Chris Lattner 1fc23f382e Handle setcc <global*>, 0 instructions, Global pointers are never null! 
llvm-svn: 2582
 2002-05-09 20:11:54 +00:00
Chris Lattner 6bd7ac6205 Give the longer name to the instruction that will probably be eliminated later 
llvm-svn: 2581
 2002-05-09 20:11:23 +00:00
Chris Lattner ad3c495225 Add ability to transform (x - (y - z)) into (x + (z - y)) 
llvm-svn: 2566
 2002-05-09 01:29:19 +00:00
Chris Lattner 147e975c43 * Combine: A-(-B) -> A + B 
* Bugfix:  A + -B and -A + B

llvm-svn: 2561
 2002-05-08 22:46:53 +00:00
Chris Lattner c0f5800678 Initial checkin of expression reassociation pass 
llvm-svn: 2559
 2002-05-08 22:19:27 +00:00
Chris Lattner bbcb8914e6 Give the unified exit node a name 
llvm-svn: 2550
 2002-05-07 22:14:45 +00:00
Chris Lattner c1496bda61 Fix bug: test/Regression/Transforms/ADCE/2002-01-31-UseStuckAround.ll 
Cleanup code a lot

llvm-svn: 2547
 2002-05-07 22:11:39 +00:00
Chris Lattner b4cfa7ff97 Merge all individual .h files into a single Scalar.h file 
llvm-svn: 2537
 2002-05-07 20:03:00 +00:00
Chris Lattner 4eaf9f70e0 This doesn't use DCE! 
llvm-svn: 2536
 2002-05-07 20:02:44 +00:00
Chris Lattner 15435fd550 Move UnifyFunctionExitNodes to Utils library: final resting place this time 
llvm-svn: 2531
 2002-05-07 19:18:48 +00:00
Chris Lattner 03453a0e39 fix comments and documentation in file 
llvm-svn: 2530
 2002-05-07 19:04:39 +00:00
Chris Lattner 77f791dd5b Split ChangeAllocations.cpp into Raise & LowerAllocations.cpp 
llvm-svn: 2529
 2002-05-07 19:02:48 +00:00
Chris Lattner 64d1334ba7 Cleanup implementation a bit 
llvm-svn: 2526
 2002-05-07 18:51:25 +00:00
Chris Lattner 7608a46cbe Updates to move some header files out of include/llvm/Transforms into 
the Scalar and Utils subdirectories

llvm-svn: 2523
 2002-05-07 18:36:35 +00:00
Chris Lattner 9b55e5a2f4 Reduce dependance on TransformInternals.h, instead using the TransformUtils library 
llvm-svn: 2518
 2002-05-07 18:12:18 +00:00
Chris Lattner 3d86d49604 Add #include no longer included by llvm/Transforms/Scalar/ConstantProp.h 
llvm-svn: 2517
 2002-05-07 18:11:30 +00:00
Chris Lattner 560da70f8c Factor code out to the TransformUtils library 
llvm-svn: 2516
 2002-05-07 18:10:55 +00:00
Chris Lattner 6a51585155 Factor code out of TransformInternals into the Transform Utils library 
llvm-svn: 2515
 2002-05-07 18:09:15 +00:00
Chris Lattner 664d085cb3 Build Transforms Utils library 
llvm-svn: 2514
 2002-05-07 18:08:50 +00:00
Chris Lattner 28537dff72 Add code pulled out of TransformInternals.cpp, ConstProp.cpp, and DCE.cpp 
llvm-svn: 2513
 2002-05-07 18:07:59 +00:00
Chris Lattner d66a6e33e9 * Convert InstWorkList to vector instead of set, because on big programs it 
is empirically faster by a noticable margin, even though duplicates can
  happen.

llvm-svn: 2511
 2002-05-07 04:29:32 +00:00
Chris Lattner 87e8806f05 * Remove all cfg simplification stuff for a new cfg simplify pass (todo) 
* Convert to worklist instead of iterative algorithm

llvm-svn: 2510
 2002-05-07 04:24:11 +00:00
Chris Lattner a6e047a5d9 Only do masking for unsigned values! 
llvm-svn: 2504
 2002-05-06 18:54:59 +00:00
Chris Lattner e548507e8c * Eliminate dead code that should have been removed in last revision 
* Convert main constant propogation pass to be worklist driven instead of
  iterative.
* -constprop pass no longer "constant propogates" terminator instructions
   - CFG is now preserved!

llvm-svn: 2502
 2002-05-06 18:21:31 +00:00
Chris Lattner bbbdd852b8 Handle X = phi Y --> X = Y 
llvm-svn: 2501
 2002-05-06 18:06:38 +00:00
Chris Lattner 4c3366405a * Use simplified interface to constant propogation stuff. 
* Remove dead PHI case (which could not work due to getNumOperands rather than
  getNumIncomingValues.  This really belongs in InstCombine, anyway so we'll
  move it there.

llvm-svn: 2497
 2002-05-06 17:54:10 +00:00
Chris Lattner 019f3649bd Clean up ADCE by removing extraneous wrapper class 
llvm-svn: 2494
 2002-05-06 17:27:57 +00:00
Chris Lattner 5d6bec5e26 Combine not (not X) -> X 
llvm-svn: 2493
 2002-05-06 17:03:21 +00:00
Chris Lattner 9fa53de7e9 Support more cases... 
llvm-svn: 2490
 2002-05-06 16:49:18 +00:00
Chris Lattner f4cdbf34e5 Add many more instruction combination simplifications 
llvm-svn: 2484
 2002-05-06 16:14:14 +00:00
Chris Lattner 66e25b8b62 Merge blocks like this: 
void "test3"(bool %T) {
        br bool %T, label %BB1, label %BB1
BB1:
        ret void
}

llvm-svn: 2472
 2002-05-06 03:02:02 +00:00
Chris Lattner 940daedc22 Implement constant propogation of shift instructions 
llvm-svn: 2471
 2002-05-06 03:01:37 +00:00
Chris Lattner 7b80b53ab9 Ok, really it only takes me 3 times to get this right! 
Now use #if 0 instead of #ifdef 0

llvm-svn: 2448
 2002-05-02 21:49:50 +00:00
Chris Lattner dd390e1736 Oops, disable debugging code all the way. :) 
llvm-svn: 2447
 2002-05-02 21:47:40 +00:00
Chris Lattner fe6c9eeae3 * Finish the implementation of isEdgeFeasible this fixes bug: 
test/Regression/Transforms/SCCP/2002-05-02-EdgeFailure.ll
* SCCP now preserves the CFG:  It leaves conditional branches the way they
  are in the program, not simplifying them.  A seperate pass should eliminate
  the potentially dead basic blocks and edges in the CFG.

llvm-svn: 2446
 2002-05-02 21:44:00 +00:00
Chris Lattner 13b52e71d8 * Enable SCCP debugging to be turned on with a simple change of #define 
* Change worklist to a set so that duplicates cannot happen
* Add support for the invoke instruction
* Avoid marking store and free instructions as overdefined, since they
  cannot produce a value anyway.
* Inline the OperandChangedState implementation
* Add isEdgeFeasible in preparation to fix a bug.  Right now it behaves
  exactly as before.
* Remove obsolete comment about constant pools

llvm-svn: 2445
 2002-05-02 21:18:01 +00:00
Chris Lattner 5364d1a74a * Simplify the code by not bothering to name the folded constant 
* Do not skip the instruction immediately after a folded instruction.  This
  was causing the testcase failure:
	test/Regression/Transforms/SCCP/2002-05-02-MissSecondInst.ll

llvm-svn: 2443
 2002-05-02 20:32:51 +00:00
Chris Lattner 05cd52199d ExprTypeConvert will already do this transformation, no need to specialize 
it here.

llvm-svn: 2431
 2002-05-02 17:38:55 +00:00
Chris Lattner 39db871f86 Be a little more efficient, do not generate loads and stores with indices in them. 
llvm-svn: 2430
 2002-05-02 17:38:14 +00:00
Chris Lattner 94dcd411a5 Fix bug: test/Regression/Transforms/LevelRaise/2002-05-02-BadCastElimination.ll 
llvm-svn: 2429
 2002-05-02 17:37:34 +00:00