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Author SHA1 Message Date
Devang Patel b9af5747a5 Do not create new pre-header. Reuse original pre-header. 
llvm-svn: 35825
 2007-04-09 19:04:21 +00:00
Devang Patel 03d7ae3a74 Simpler for() loops. 
llvm-svn: 35822
 2007-04-09 17:09:13 +00:00
Devang Patel d6ba41e02d Fix future bug. Of course, Chris spotted this. 
Handle Argument or Undef as an incoming PHI value.

llvm-svn: 35821
 2007-04-09 16:41:46 +00:00
Devang Patel b28a391a8d More cosmetic changes. 
llvm-svn: 35820
 2007-04-09 16:21:29 +00:00
Devang Patel 88bc2c6f82 Only cosmetic changes. Zero functionality Change. 
llvm-svn: 35819
 2007-04-09 16:11:48 +00:00
Chris Lattner a87c9f6114 Fix PR1304 and Transforms/InstCombine/2007-04-08-SingleEltVectorCrash.ll 
llvm-svn: 35792
 2007-04-09 01:37:55 +00:00
Chris Lattner 4ca9cbb170 Eliminate useless insertelement instructions. This implements 
Transforms/InstCombine/vec_insertelt.ll and fixes PR1286.

We now compile the code from that bug into:

_foo:
        movl 4(%esp), %eax
        movdqa (%eax), %xmm0
        movl 8(%esp), %ecx
        psllw (%ecx), %xmm0
        movdqa %xmm0, (%eax)
        ret

instead of:

_foo:
        subl $4, %esp
        movl %ebp, (%esp)
        movl %esp, %ebp
        movl 12(%ebp), %eax
        movdqa (%eax), %xmm0
        #IMPLICIT_DEF %eax
        pinsrw $2, %eax, %xmm0
        xorl %ecx, %ecx
        pinsrw $3, %ecx, %xmm0
        pinsrw $4, %eax, %xmm0
        pinsrw $5, %ecx, %xmm0
        pinsrw $6, %eax, %xmm0
        pinsrw $7, %ecx, %xmm0
        movl 8(%ebp), %eax
        movdqa (%eax), %xmm1
        psllw %xmm0, %xmm1
        movdqa %xmm1, (%eax)
        movl %ebp, %esp
        popl %ebp
        ret

woo :)

llvm-svn: 35788
 2007-04-09 01:11:16 +00:00
Owen Anderson ae39ca037a Cleanup some from my DomSet-removal changes. Add a new 
isReachableFromEntry
test to ETForest to factor a common test out of code.

llvm-svn: 35786
 2007-04-09 00:52:49 +00:00
Chris Lattner aa8ad10c2f Fix a typo that broke SimplifyLibCalls/SPrintF.ll (pr1315) 
llvm-svn: 35768
 2007-04-08 18:11:26 +00:00
Chris Lattner c8d3788f71 reenable this xform, whoops :) 
llvm-svn: 35765
 2007-04-08 08:01:49 +00:00
Chris Lattner 7621a031d8 Fix regression on Instcombine/apint-or2.ll 
llvm-svn: 35763
 2007-04-08 07:55:22 +00:00
Chris Lattner 1150df9cc4 Generalize the code that handles (A&B)|(A&C) to work where B/C are not constants. 
Add a new xform to simplify (A&B)|(~A&C).  THis implements InstCombine/or2.ll:test1

llvm-svn: 35760
 2007-04-08 07:47:01 +00:00
Chris Lattner 5717981e5d implement a fixme: move optimizations for fwrite out of fputs into a new 
fwrite optimizer.

llvm-svn: 35758
 2007-04-08 07:00:35 +00:00
Nick Lewycky e6c64466c7 Remove DominatorSet usage from LoopSimplify. Patch from Owen Anderson. 
llvm-svn: 35757
 2007-04-08 01:04:30 +00:00
Chris Lattner 182a945fb5 Significantly simplify the clients of GetConstantStringInfo, by having it 
just return the string itself.

llvm-svn: 35755
 2007-04-07 21:58:02 +00:00
Chris Lattner 08c0b8b3c8 Fix problems in the sprintf optimizer 
llvm-svn: 35754
 2007-04-07 21:17:51 +00:00
Chris Lattner bed184cbcf Change CastToCStr to take a pointer instead of a reference. 
Fix some miscompilations in fprintf optimizer.

llvm-svn: 35753
 2007-04-07 21:04:50 +00:00
Chris Lattner 898d698d9f Fix an off-by-one error that broke Prolangs/deriv2 with llc on x86 
and Prolangs-C/cdecl

llvm-svn: 35749
 2007-04-07 20:19:08 +00:00
Owen Anderson f7ebea1b9f Add DomSet back, and revert the changes to LoopSimplify. Apparently the 
ETForest updating mechanisms don't work as I thought they did.  These changes
will be reapplied once the issue is worked out.

llvm-svn: 35741
 2007-04-07 18:23:27 +00:00
Nick Lewycky d4f51a8ae3 Add support for cast instructions. 
llvm-svn: 35734
 2007-04-07 15:48:32 +00:00
Owen Anderson 8763ba1b88 Completely purge DomSet. This is the (hopefully) final patch for PR1171. 
llvm-svn: 35731
 2007-04-07 07:17:27 +00:00
Owen Anderson 706e97049d Completely purge DomSet from LoopSimplify. This is part of the 
continuing work on PR1171.

llvm-svn: 35730
 2007-04-07 06:56:47 +00:00
Owen Anderson d03a646f06 BreakCriticalEdges does still preserve DominatorTree. 
llvm-svn: 35729
 2007-04-07 05:57:09 +00:00
Owen Anderson b39d9ca902 Expunge DomSet from BreakCriticalEdges. This is part of the continuing 
work for PR 1171.

llvm-svn: 35728
 2007-04-07 05:49:29 +00:00
Owen Anderson f095bf3ac4 Expunge DomSet from CodeExtractor. This is part of the continuing work 
on PR1171.

llvm-svn: 35726
 2007-04-07 05:31:27 +00:00
Nick Lewycky 93f541057b Support NE inequality in ValueRanges. 
llvm-svn: 35724
 2007-04-07 04:49:12 +00:00
Owen Anderson 910419596e Expunge a bunch of uses of DomSet from LoopSimplify. Many more remain. 
This is the beginning of work for PR1171.

llvm-svn: 35720
 2007-04-07 04:37:14 +00:00
Nick Lewycky 3bb6de85d1 Cleanup. Refactor out the applying of value ranges to its own method. 
llvm-svn: 35719
 2007-04-07 03:36:51 +00:00
Nick Lewycky 12d44abe0f Use TargetData to find the size of a type. 
llvm-svn: 35718
 2007-04-07 03:16:12 +00:00
Nick Lewycky eeb01b41ef Strengthen icmp snuggling by doing 'compare-or-equal-to' to 'compare' 
first and then range testing second.

llvm-svn: 35715
 2007-04-07 02:30:14 +00:00
Devang Patel f42389ffe5 Add loop rotation pass. 
llvm-svn: 35714
 2007-04-07 01:25:15 +00:00
Chris Lattner 0f1509511e fix a miscompilation in printf optimizer. 
llvm-svn: 35713
 2007-04-07 01:18:36 +00:00
Chris Lattner 6a36d636e9 trunc to bool no longer compares against zero 
llvm-svn: 35712
 2007-04-07 01:03:46 +00:00
Chris Lattner e8829aa9dd cleanups for strlen optimizer 
llvm-svn: 35711
 2007-04-07 01:02:00 +00:00
Chris Lattner 485b6415b1 Introduce a new ReplaceCallWith method, which simplifies a lot of code. 
llvm-svn: 35710
 2007-04-07 00:42:32 +00:00
Chris Lattner 6a6c1f1c30 fixes for strcpy optimizer 
llvm-svn: 35709
 2007-04-07 00:26:18 +00:00
Chris Lattner f9ee647e86 Fix bugs in strncmp. 
llvm-svn: 35708
 2007-04-07 00:06:57 +00:00
Chris Lattner c9ccc30212 fix 3 miscompilations and several compielr crashes in strcmp optimizer. 
llvm-svn: 35707
 2007-04-07 00:01:51 +00:00
Chris Lattner 39f0bb9670 Fix several nasty bugs in the strchr optimizer, this fixes 
SimplifyLibCalls/2007-04-06-strchr-miscompile.ll and PR1307

llvm-svn: 35706
 2007-04-06 23:38:55 +00:00
Chris Lattner 56b7fc7768 clean up strcat optimizer, no functionality change. 
llvm-svn: 35704
 2007-04-06 22:59:33 +00:00
Chris Lattner 9b2b8abd20 rename getConstantStringLength -> GetConstantStringInfo. Make it return 
the start index of the array as well as the length.  No functionality change.

llvm-svn: 35703
 2007-04-06 22:54:17 +00:00
Chris Lattner 3dbe65f80a implement Transforms/InstCombine/malloc2.ll and PR1313 
llvm-svn: 35700
 2007-04-06 18:57:34 +00:00
Chris Lattner 1a9a760318 Fix Transforms/GlobalOpt/2007-04-05-Crash.ll 
llvm-svn: 35689
 2007-04-05 21:09:42 +00:00
Chris Lattner 108083edff Use a worklist-driven algorithm instead of a recursive one. 
llvm-svn: 35680
 2007-04-05 01:27:02 +00:00
Dale Johannesen 7c2001d014 Prevent transformConstExprCastCall from generating conversions that assert 
elsewhere.

llvm-svn: 35668
 2007-04-04 19:16:42 +00:00
Jeff Cohen 5a1c750f31 Fix 2007-04-04-BadFoldBitcastIntoMalloc.ll 
llvm-svn: 35665
 2007-04-04 16:58:57 +00:00
Duncan Sands f01a47c93c Fix comment. 
llvm-svn: 35655
 2007-04-04 06:42:45 +00:00
Chris Lattner e5bbb3cb1a Fix a bug I introduced with my patch yesterday which broke Qt (I converted 
some constant exprs to apints).

Thanks to Anton for tracking down a small testcase that triggered this!

llvm-svn: 35633
 2007-04-03 23:29:39 +00:00
Chris Lattner a74deafb13 reinstate the previous two patches, with a bugfix :) 
ldecod now passes.

llvm-svn: 35626
 2007-04-03 17:43:25 +00:00
Evan Cheng 7511fa280d Reverting back to 1.723. The last two commits broke JM (and possibily others) on ARM. 
llvm-svn: 35620
 2007-04-03 08:11:50 +00:00
Chris Lattner 81e0707552 split some code out into a helper function 
llvm-svn: 35615
 2007-04-03 05:11:24 +00:00
Chris Lattner 64c764cebc Split a whole ton of code out of visitICmpInst into visitICmpInstWithInstAndIntCst. 
llvm-svn: 35614
 2007-04-03 04:46:52 +00:00
Chris Lattner 8b2ec5f506 Fix PR1253 and xor2.ll:test[01] 
llvm-svn: 35612
 2007-04-03 01:47:41 +00:00
Chris Lattner f3197a7d53 allow -1 strides to reuse "1" strides. 
llvm-svn: 35607
 2007-04-02 22:51:58 +00:00
Zhou Sheng 9bc8ab100d 1. Make use of APInt operation instead of using ConstantExpr::getXXX. 
2. Use cheaper APInt methods.

llvm-svn: 35594
 2007-04-02 13:45:30 +00:00
Zhou Sheng 56cda95658 Use uint32_t for bitwidth instead of unsigned. 
llvm-svn: 35593
 2007-04-02 08:20:41 +00:00
Chris Lattner 28e0e4e11e Pass the type of the store access, not the type of the store, into the 
target hook.  This allows us to codegen a loop as:

LBB1_1: @cond_next
        mov r2, #0
        str r2, [r0, +r3, lsl #2]
        add r3, r3, #1
        cmn r3, #1
        bne LBB1_1      @cond_next

instead of:

LBB1_1: @cond_next
        mov r2, #0
        str r2, [r0], #+4
        add r3, r3, #1
        cmn r3, #1
        bne LBB1_1      @cond_next

This looks the same, but has one fewer induction variable (and therefore,
one fewer register) live in the loop.

llvm-svn: 35592
 2007-04-02 06:34:44 +00:00
Chris Lattner 9d5aacee92 Wrap long line 
llvm-svn: 35588
 2007-04-02 05:48:58 +00:00
Chris Lattner 50490d54f2 use more obvious function name. 
llvm-svn: 35587
 2007-04-02 05:42:22 +00:00
Chris Lattner b24acc7bee simplify (x+c)^signbit as (x+c+signbit), pointed out by PR1288. This implements 
test/Transforms/InstCombine/xor.ll:test28

llvm-svn: 35584
 2007-04-02 05:36:22 +00:00
Chris Lattner b7b75145f1 reduce use of std::set 
llvm-svn: 35576
 2007-04-02 01:44:59 +00:00
Chris Lattner c3748562bd Various passes before isel split edges and do other CFG-restructuring changes. 
isel has its own particular features that it wants in the CFG, in order to
reduce the number of times a constant is computed, etc.  Make sure that we
clean up the CFG before doing any other things for isel.  Doing so can
dramatically reduce the number of split edges and reduce the number of
places that constants get computed.  For example, this shrinks
CodeGen/Generic/phi-immediate-factoring.ll from 44 to 37 instructions on X86,
and from 21 to 17 MBB's in the output.  This is primarily a code size win,
not a performance win.

This implements CodeGen/Generic/phi-immediate-factoring.ll and PR1296.

llvm-svn: 35575
 2007-04-02 01:35:34 +00:00
Chris Lattner 8fe3cbe6bd print the type of an inserted IV in -debug mode. 
llvm-svn: 35563
 2007-04-01 22:21:39 +00:00
Chris Lattner c3eeb42809 simplify this code, make it work for ap ints 
llvm-svn: 35561
 2007-04-01 20:57:36 +00:00
Zhou Sheng 150f3bbab2 Avoid unnecessary APInt construction. 
llvm-svn: 35555
 2007-04-01 17:13:37 +00:00
Reid Spencer 6bba6c8143 For PR1297: 
Support overloaded intrinsics bswap, ctpop, cttz, ctlz.

llvm-svn: 35547
 2007-04-01 07:35:23 +00:00
Chris Lattner 0427799531 Fix InstCombine/2007-03-31-InfiniteLoop.ll 
llvm-svn: 35536
 2007-04-01 05:36:37 +00:00
Chris Lattner f2836d17b6 Split the sdisel code munging stuff out into its own opt-pass, CodeGenPrepare. 
llvm-svn: 35528
 2007-03-31 04:06:36 +00:00
Zhou Sheng 82c42284f4 Delete dead code. 
llvm-svn: 35525
 2007-03-31 02:50:26 +00:00
Zhou Sheng 4f16402e0d Use APInt operators to calculate the carry bits, remove this loop. 
llvm-svn: 35524
 2007-03-31 02:38:39 +00:00
Zhou Sheng fd28a33031 Make sure the use of ConstantInt::getZExtValue() for shift amount safe. 
llvm-svn: 35510
 2007-03-30 17:20:39 +00:00
Zhou Sheng b25806fa5f 1. Make sure the use of ConstantInt::getZExtValue() for getting shift 
amount is safe.
2. Use new method on ConstantInt instead of (? :) operator.
3. Use new method uge() on ConstantInt to simplify codes.

llvm-svn: 35505
 2007-03-30 09:29:48 +00:00
Zhou Sheng 5e60a4a6b0 Use APInt operation instead of ConstantExpr::getXX. 
llvm-svn: 35503
 2007-03-30 05:45:18 +00:00
Zhou Sheng b3a80b1d70 1. Make more use of APInt::getHighBitsSet/getLowBitsSet. 
2. Let APInt variable do the binary operation stuff instead of using
   ConstantExpr::getXXX.

llvm-svn: 35450
 2007-03-29 08:15:12 +00:00
Zhou Sheng 444af49cc0 Clean up some codes in InstCombiner::SimplifyDemandedBits(). 
llvm-svn: 35446
 2007-03-29 04:45:55 +00:00
Zhou Sheng a4475575c0 Clean up codes in InstCombiner::SimplifyDemandedBits(): 
1. Line out nested call of APInt::zext/trunc.
2. Make more use of APInt::getHighBitsSet/getLowBitsSet.
3. Use APInt[] operator instead of expression like "APIntVal & SignBit".

llvm-svn: 35444
 2007-03-29 02:26:30 +00:00
Zhou Sheng 4961cf1c06 1. Make the APInt variable do the binary operation stuff if possible 
instead of using ConstantExpr::getXX.
2. Use constant reference to APInt if possible instead of expensive
   APInt copy.

llvm-svn: 35443
 2007-03-29 01:57:21 +00:00
Zhou Sheng 117477e28b Avoid unnecessary APInt construction. 
llvm-svn: 35431
 2007-03-28 17:38:21 +00:00
Zhou Sheng 23f7a1c947 1. Make more use of getLowBitsSet/getHighBitsSet. 
2. Use APInt[] instead of "X & SignBit".
3. Clean up some codes.
4. Make the expression like "ShiftAmt = ShiftAmtC->getZExtValue()" safe.

llvm-svn: 35424
 2007-03-28 15:02:20 +00:00
Zhou Sheng 2777a31850 1. Make more use of getLowBitsSet/getHighBitsSet. 
2. Make the APInt value do the zext/trunc stuff instead of using
   ConstantExpr::getZExt().

llvm-svn: 35422
 2007-03-28 09:19:01 +00:00
Zhou Sheng c2d3309b99 Use UnknownBIts[BitWidth-1] instead of UnknownBIts & SignBits. 
llvm-svn: 35418
 2007-03-28 05:15:57 +00:00
Zhou Sheng 18570b1f14 Remove unused APInt variable. 
llvm-svn: 35414
 2007-03-28 03:02:21 +00:00
Zhou Sheng 57e3f7324b Clean up codes in ComputeMaskedBits(): 
1. Line out nested use of zext/trunc.
2. Make more use of getHighBitsSet/getLowBitsSet.
3. Use APInt[] != 0 instead of "(APInt & SignBit) != 0".

llvm-svn: 35408
 2007-03-28 02:19:03 +00:00
Reid Spencer a5c18bf798 For PR1280: 
When converting an add/xor/and triplet into a trunc/sext, only do so if the
intermediate integer type is a bitwidth that the targets can handle.

llvm-svn: 35400
 2007-03-28 01:36:16 +00:00
Evan Cheng a4ed8a512a Unbreaks non-debug builds. 
llvm-svn: 35383
 2007-03-27 16:44:48 +00:00
Reid Spencer 54d5b1b8f8 Implement some minor review feedback. 
llvm-svn: 35373
 2007-03-26 23:58:26 +00:00
Reid Spencer 441486c172 For PR1271: 
Fix another incorrectly converted shift mask.

llvm-svn: 35371
 2007-03-26 23:45:51 +00:00
Devang Patel 4398e242dd Reduce malloc/free traffic. 
llvm-svn: 35370
 2007-03-26 23:19:29 +00:00
Chris Lattner d2602d5054 eliminate use of std::set 
llvm-svn: 35361
 2007-03-26 20:40:50 +00:00
Reid Spencer 755d0e7ffc Get better debug output by having modified instructions print both the 
original and new instruction. A slight performance hit with ostringstream
but it is only for debug.
Also, clean up an uninitialized variable warning noticed in a release build.

llvm-svn: 35358
 2007-03-26 17:44:01 +00:00
Reid Spencer 769a5a8e0b Get the number of bits to set in a mask correct for a shl/lshr transform. 
llvm-svn: 35357
 2007-03-26 17:18:58 +00:00
Reid Spencer 50898607a9 For PR1271: 
Fix SingleSource/Regression/C/2003-05-21-UnionBitFields.c by changing a
getHighBitsSet call to getLowBitsSet call that was incorrectly converted
from the original lshr constant expression.

llvm-svn: 35348
 2007-03-26 05:25:00 +00:00
Dale Johannesen e5866e7b89 Look through bitcast when finding IVs. (Chris' patch really.) 
llvm-svn: 35347
 2007-03-26 03:01:27 +00:00
Reid Spencer 52830327e9 For PR1271: 
Remove a use of getLowBitsSet that caused the mask used for replacement of
shl/lshr pairs with an AND instruction to be computed incorrectly. Its not
clear exactly why this is the case. This solves the disappearing shifts
problem, but it doesn't fix Regression/C/2003-05-21-UnionBitFields. It
seems there is more going on.

llvm-svn: 35342
 2007-03-25 21:11:44 +00:00
Chris Lattner 9bf53ffaa2 implement Transforms/InstCombine/cast2.ll:test3 and PR1263 
llvm-svn: 35341
 2007-03-25 20:43:09 +00:00
Reid Spencer 624766f8a2 Some cleanup from review: 
* Don't assume shift amounts are <= 64 bits
* Avoid creating an extra APInt in SubOne and AddOne by using -- and ++
* Add another use of getLowBitsSet
* Convert a series of if statements to a switch

llvm-svn: 35339
 2007-03-25 19:55:33 +00:00
Reid Spencer 80263aadf3 Refactor several ConstantExpr::getXXX calls with ConstantInt arguments 
using the facilities of APInt. While this duplicates a tiny fraction of
the constant folding code, it also makes the code easier to read and
avoids large ConstantExpr overhead for simple, known computations.

llvm-svn: 35335
 2007-03-25 05:33:51 +00:00
Zhou Sheng 222d5ebfd2 1. Avoid unnecessary APInt construction if possible. 
2. Use isStrictlyPositive() instead of isPositive() in two places where
   they need APInt value > 0 not only >=0.

llvm-svn: 35333
 2007-03-25 05:01:29 +00:00
Reid Spencer cd99fbdf3b Make more uses of getHighBitsSet and get rid of some pointless & of an 
APInt with its type mask.

llvm-svn: 35325
 2007-03-25 04:26:16 +00:00
Reid Spencer d8aad61d4d More APIntification: 
* Convert the last use of a uint64_t that should have been an APInt.
* Change ComputeMaskedBits to have a const reference argument for the Mask
  so that recursions don't cause unneeded temporaries. This causes temps
  to be needed in other places (where the mask has to change) but this
  change optimizes for the recursion which is more frequent.
* Remove two instances of &ing a Mask with getAllOnesValue. Its not
  needed any more because APInt is accurate in its bit computations.
* Start using the getLowBitsSet and getHighBits set methods on APInt
  instead of shifting. This makes it more clear in the code what is
  going on.

llvm-svn: 35321
 2007-03-25 02:03:12 +00:00
Chris Lattner 3a8248f79d fix a regression on vector or instructions. 
llvm-svn: 35314
 2007-03-24 23:56:43 +00:00
Zhou Sheng e9ebd3f6ba Make some codes more efficient. 
llvm-svn: 35297
 2007-03-24 15:34:37 +00:00
Reid Spencer a962d18774 For PR1205: 
Convert some calls to ConstantInt::getZExtValue() into getValue() and
use APInt facilities in the subsequent computations.

llvm-svn: 35294
 2007-03-24 00:42:08 +00:00
Reid Spencer 959a21d3dc For PR1205: 
* APIntify visitAdd and visitSelectInst
* Remove unused uint64_t versions of utility functions that have been
  replaced with APInt versions.
This completes most of the changes for APIntification of InstCombine. This
passes llvm-test and llvm/test/Transforms/InstCombine/APInt.

Patch by Zhou Sheng.

llvm-svn: 35287
 2007-03-23 21:24:59 +00:00
Reid Spencer 6d39206bc2 For PR1205: 
APIntify visitDiv, visitMul and visitRem.

Patch by Zhou Sheng.

llvm-svn: 35283
 2007-03-23 20:05:17 +00:00
Chris Lattner 12b89cc148 switch AddReachableCodeToWorklist from being recursive to being iterative. 
llvm-svn: 35282
 2007-03-23 19:17:18 +00:00
Reid Spencer 6274c72ee1 For PR1205: 
APIntify several utility functions supporting logical operators and shift
operators.

Patch by Zhou Sheng.

llvm-svn: 35281
 2007-03-23 18:46:34 +00:00
Zhou Sheng 0900993ebc Make the "KnownZero ^ TypeMask" computation just once. 
llvm-svn: 35276
 2007-03-23 03:13:21 +00:00
Zhou Sheng 755f04b5d7 Simplify the code. 
llvm-svn: 35275
 2007-03-23 02:39:25 +00:00
Reid Spencer b722f2b110 For PR1205: 
APInt support for logical operators in visitAnd, visitOr, and visitXor.

Patch by Zhou Sheng.

llvm-svn: 35273
 2007-03-22 22:19:58 +00:00
Reid Spencer 4154e732e6 For PR1205: 
* APIntify commonIntCastTransforms
* APIntify visitTrunc
* APIntify visitZExt

Patch by Zhou Sheng.

llvm-svn: 35271
 2007-03-22 20:56:53 +00:00
Reid Spencer c3e3b8a32f For PR1205: 
* Re-enable the APInt version of MaskedValueIsZero.
* APIntify the Comput{Un}SignedMinMaxValuesFromKnownBits functions
* APIntify visitICmpInst.

llvm-svn: 35270
 2007-03-22 20:36:03 +00:00
Dan Gohman dcb291faa4 Change uses of Function::front to Function::getEntryBlock for readability. 
llvm-svn: 35265
 2007-03-22 16:38:57 +00:00
Nick Lewycky b0da7ed9c8 Fix broken optimization disabled by a logic bug. 
Analyze GEPs. If the indices are all zero, transfer whether the pointer is
known to be not null through the GEP.

Add a few more cases for xor and shift instructions.

llvm-svn: 35257
 2007-03-22 02:02:51 +00:00
Reid Spencer f40711637f For PR1248: 
* Fix some indentation and comments in InsertRangeTest
* Add an "IsSigned" parameter to AddWithOverflow and make it handle signed
  additions. Also, APIntify this function so it works with any bitwidth.
* For the icmp pred ([us]div %X, C1), C2 transforms, exit early if the
  div instruction's RHS is zero.
* Finally, for icmp pred (sdiv %X, C1), -C2, fix an off-by-one error. The
  HiBound needs to be incremented in order to get the range test correct.

llvm-svn: 35247
 2007-03-21 23:19:50 +00:00
Dale Johannesen bacf4acf65 do not share old induction variables when this would result in invalid 
instructions (that would have to be split later)

llvm-svn: 35227
 2007-03-20 21:54:54 +00:00
Jeff Cohen 1baf5c84ab Fix some VC++ warnings. 
llvm-svn: 35224
 2007-03-20 20:43:18 +00:00
Devang Patel 1758cb50de LoopSimplify::FindPHIToPartitionLoops() 
Use ETForest instead of DominatorSet.

llvm-svn: 35221
 2007-03-20 20:18:12 +00:00
Zhou Sheng b3949340c8 Simplify isHighOnes(). 
llvm-svn: 35211
 2007-03-20 12:49:06 +00:00
Dale Johannesen e3a02be5f1 use types of loads and stores, not address, in CheckForIVReuse 
llvm-svn: 35197
 2007-03-20 00:47:50 +00:00
Reid Spencer 6682721316 Make isOneBitSet faster by using APInt::isPowerOf2. Thanks Chris. 
llvm-svn: 35194
 2007-03-20 00:16:52 +00:00
Reid Spencer cc031a43aa APIntify the isHighOnes utility function. 
llvm-svn: 35190
 2007-03-19 21:29:50 +00:00
Reid Spencer ef599b0786 Implement isMaxValueMinusOne in terms of APInt instead of uint64_t. 
Patch by Sheng Zhou.

llvm-svn: 35188
 2007-03-19 21:10:28 +00:00
Reid Spencer 3b93db72b4 Implement isMinValuePlusOne using facilities of APInt instead of uint64_t 
Patch by Zhou Sheng.

llvm-svn: 35187
 2007-03-19 21:08:07 +00:00
Reid Spencer 129a86792d Implement isOneBitSet in terms of APInt::countPopulation. 
llvm-svn: 35186
 2007-03-19 21:04:43 +00:00
Reid Spencer 450434ed65 1. Use APInt::getSignBit to reduce clutter (patch by Sheng Zhou) 
2. Replace uses of the "isPositive" utility function with APInt::isPositive

llvm-svn: 35185
 2007-03-19 20:58:18 +00:00
Reid Spencer 03c31d5bb0 Remove a redundant clause in an if statement. 
Patch by Sheng Zhou.

llvm-svn: 35184
 2007-03-19 20:47:50 +00:00
Chris Lattner 9c62db7c8c fix ScalarRepl/2007-03-19-CanonicalizeMemcpy.ll 
llvm-svn: 35169
 2007-03-19 18:25:57 +00:00
Chris Lattner 877a3b424d implement the next chunk of SROA with memset/memcpy's of aggregates. This 
implements Transforms/ScalarRepl/memset-aggregate-byte-leader.ll

llvm-svn: 35150
 2007-03-19 00:16:43 +00:00
Nick Lewycky db204ecfbc Clean up this code and fix subtract miscompile. 
llvm-svn: 35146
 2007-03-18 22:58:46 +00:00
Chris Lattner 0741842b3b Implement InstCombine/and-xor-merge.ll:test[12]. 
Rearrange some code to simplify it now that shifts are binops

llvm-svn: 35145
 2007-03-18 22:51:34 +00:00
Nick Lewycky 17d20fd41e Propagate ValueRanges across equality. 
Add some more micro-optimizations: x * 0 = 0, a - x = a --> x = 0.

llvm-svn: 35138
 2007-03-18 01:09:32 +00:00
Anton Korobeynikov 22f436da42 Silence warning 
llvm-svn: 35137
 2007-03-17 14:48:06 +00:00
Nick Lewycky 4f73de2b4e Add more comments and update to new asm syntax. 
Add new micro-optimizations.

Add icmp predicate snuggling. Given %x ULT 4, "icmp ugt %x, 2" becomes
"icmp eq %x, 3". This doesn't apply in any non-trivial cases yet due to missing
support for NE values in ValueRanges.

llvm-svn: 35119
 2007-03-16 02:37:39 +00:00
Zhou Sheng d8c645b0ba ShiftAmt might equal to zero. Handle this situation. 
llvm-svn: 35094
 2007-03-14 09:07:33 +00:00
Zhou Sheng b912844554 Enable KnownZero/One.clear(). 
llvm-svn: 35093
 2007-03-14 03:21:24 +00:00
Evan Cheng b5eb932c93 Correct type info for isLegalAddressImmediate() check. 
llvm-svn: 35086
 2007-03-13 20:34:37 +00:00
Chris Lattner d1bce956b4 ifdef out some dead code. 
Fix PR1244 and Transforms/InstCombine/2007-03-13-CompareMerge.ll

llvm-svn: 35082
 2007-03-13 14:27:42 +00:00
Zhou Sheng ebe634e662 For expression like 
"APInt::getAllOnesValue(ShiftAmt).zextOrCopy(BitWidth)",
to handle ShiftAmt == BitWidth situation, use zextOrCopy() instead of
zext().

llvm-svn: 35080
 2007-03-13 06:40:59 +00:00
Zhou Sheng af4341d441 In APInt version ComputeMaskedBits(): 
1. Ensure VTy, KnownOne and KnownZero have same bitwidth.
  2. Make code more efficient.

llvm-svn: 35078
 2007-03-13 02:23:10 +00:00
Evan Cheng 720acdfb31 Use new TargetLowering addressing modes hooks. 
llvm-svn: 35072
 2007-03-12 23:27:37 +00:00
Jeff Cohen 00227417d2 Unbreak VC++ build. Do not use identifiers starting with _ as they are reserved and 
can collide with system defined names.  Windows defines _BB, for example.

llvm-svn: 35066
 2007-03-12 17:56:27 +00:00
Reid Spencer 1791f23803 Add an APInt version of SimplifyDemandedBits. 
Patch by Zhou Sheng.

llvm-svn: 35064
 2007-03-12 17:25:59 +00:00
Reid Spencer d9281784be Add an APInt version of ShrinkDemandedConstant. 
Patch by Zhou Sheng.

llvm-svn: 35063
 2007-03-12 17:15:10 +00:00
Zhou Sheng be171ee5cd Avoid to assert on "(KnownZero & KnownOne) == 0". 
llvm-svn: 35062
 2007-03-12 16:54:56 +00:00
Zhou Sheng b3e00c4656 In function ComputeMaskedBits(): 
1. Replace getSignedMinValue() with getSignBit() for better code readability.
  2. Replace APIntOps::shl() with operator<<= for convenience.
  3. Make APInt construction more effective.

llvm-svn: 35060
 2007-03-12 05:44:52 +00:00
Nick Lewycky d9bd0bc3e2 Add value ranges. Currently inefficient in both execution time and 
optimization power.

llvm-svn: 35058
 2007-03-10 18:12:48 +00:00
Anton Korobeynikov 8a6dc102d3 Use range tests in LowerSwitch, where possible 
llvm-svn: 35057
 2007-03-10 16:46:28 +00:00
Devang Patel 5f50e61d52 Remove dead comments. 
llvm-svn: 35053
 2007-03-09 23:41:03 +00:00
Devang Patel bda1250624 Avoid recursion. Use iterative algorithm for RenamePass(). 
llvm-svn: 35052
 2007-03-09 23:39:14 +00:00
Devang Patel 58818c530f Increment iterator now because IVUseShouldUsePostIncValue may remove 
User from the list of I users.

llvm-svn: 35051
 2007-03-09 21:19:53 +00:00
Zhou Sheng d1eb3d593e Fix a bug in function ComputeMaskedBits(). 
llvm-svn: 35027
 2007-03-08 15:15:18 +00:00
Chris Lattner abd3bff4f2 This appears correct, enable it so we can see perf changes on testers 
llvm-svn: 35024
 2007-03-08 07:03:55 +00:00
Chris Lattner 9f022d550b Second half of PR1226. This is currently still disabled, until I have a chance to 
do the correctness/performance analysis testing.

llvm-svn: 35023
 2007-03-08 06:36:54 +00:00
Zhou Sheng 387d7b1a35 Fix a bug in APIntified ComputeMaskedBits(). 
llvm-svn: 35022
 2007-03-08 05:42:00 +00:00
Reid Spencer bb5741fb02 For PR1205: 
Provide an APIntified version of MaskedValueIsZero. This will (temporarily)
cause a "defined but not used" message from the compiler. It will be used
in the next patch in this series.

Patch by Sheng Zhou.

llvm-svn: 35019
 2007-03-08 01:52:58 +00:00
Reid Spencer aa69640b10 For PR1205: 
Add a new ComputeMaskedBits function that is APIntified. We'll slowly
convert things over to use this version. When its all done, we'll remove
the existing version.

llvm-svn: 35018
 2007-03-08 01:46:38 +00:00
Devang Patel 2ac57e1f02 Now IndVarSimplify is a LoopPass. 
llvm-svn: 35003
 2007-03-07 06:39:01 +00:00
Devang Patel 69730c96db Now LICM is a LoopPass. 
llvm-svn: 35001
 2007-03-07 04:41:30 +00:00
Devang Patel 9779e56c04 Now LoopUnroll is a LoopPass. 
llvm-svn: 34996
 2007-03-07 01:38:05 +00:00
Devang Patel 901a27d892 Now LoopUnswitch is a LoopPass. 
llvm-svn: 34992
 2007-03-07 00:26:10 +00:00
Devang Patel b0743b5d6a Now LoopStrengthReduce is a LoopPass. 
llvm-svn: 34984
 2007-03-06 21:14:09 +00:00
Reid Spencer 3939b1a274 Remove an unnecessary if statement and adjust indentation. 
llvm-svn: 34939
 2007-03-05 23:36:13 +00:00
Chris Lattner 66e6a8229a This is the first major step of implementing PR1226. We now successfully 
scalarrepl things down to elements, but mem2reg can't promote elements that
are memset/memcpy'd.  Until then, the code is disabled "0 &&".

llvm-svn: 34924
 2007-03-05 07:52:57 +00:00
Chris Lattner fe53cf2459 fix a subtle bug that caused an MSVC warning. Thanks to Jeffc for pointing this out. 
llvm-svn: 34920
 2007-03-05 00:11:19 +00:00
Chris Lattner 5fdded1d2f Add some simplifications for demanded bits, this allows instcombine to turn: 
define i64 @test(i64 %A, i32 %B) {
        %tmp12 = zext i32 %B to i64             ; <i64> [#uses=1]
        %tmp3 = shl i64 %tmp12, 32              ; <i64> [#uses=1]
        %tmp5 = add i64 %tmp3, %A               ; <i64> [#uses=1]
        %tmp6 = and i64 %tmp5, 123              ; <i64> [#uses=1]
        ret i64 %tmp6
}

into:

define i64 @test(i64 %A, i32 %B) {
        %tmp6 = and i64 %A, 123         ; <i64> [#uses=1]
        ret i64 %tmp6
}

This implements Transforms/InstCombine/add2.ll:test1

llvm-svn: 34919
 2007-03-05 00:02:29 +00:00
Jeff Cohen b622c11f77 Unbreak VC++ build. 
llvm-svn: 34917
 2007-03-05 00:00:42 +00:00
Chris Lattner ab2f913b68 simplify some code 
llvm-svn: 34914
 2007-03-04 23:16:36 +00:00
Chris Lattner c33fd469ef minor cleanups 
llvm-svn: 34904
 2007-03-04 04:50:21 +00:00
Chris Lattner 8258b44b22 Speed up -instcombine by 20% by avoiding a particularly expensive passmgr call. 
llvm-svn: 34902
 2007-03-04 04:27:24 +00:00
Chris Lattner a5403a587c switch MarkAliveBlocks over to using SmallPtrSet instead of std::set, speeding 
up simplifycfg by 20%

llvm-svn: 34901
 2007-03-04 04:20:48 +00:00
Chris Lattner d7b4c92cd0 make better use of LCSSA information in RewriteLoopExitValues. Before, we 
would scan the entire loop body, then scan all users of instructions in the
loop, looking for users outside the loop.  Now, since we know that the
loop is in LCSSA form, we know that any users outside the loop will be LCSSA
phi nodes.  Just scan them.

This speeds up indvars significantly.

llvm-svn: 34898
 2007-03-04 03:43:23 +00:00
Chris Lattner 1f7648efba Implement PR1179/PR1232 and test/Transforms/IndVarsSimplify/loop_evaluate_[234].ll 
This makes -indvars require and use LCSSA, updating it as appropriate.

llvm-svn: 34896
 2007-03-04 01:00:28 +00:00
Chris Lattner ed30abf0cb Make RewriteLoopExitValues far less nested by using continue in the loop 
llvm-svn: 34891
 2007-03-03 22:48:48 +00:00
Chris Lattner da1d04a057 my recent change caused a failure in a bswap testcase, because it changed 
the order that instcombine processed instructions in the testcase.  The end
result is that instcombine finished with:

define i16 @test1(i16 %a) {
        %tmp = zext i16 %a to i32               ; <i32> [#uses=2]
        %tmp21 = lshr i32 %tmp, 8               ; <i32> [#uses=1]
        %tmp5 = shl i32 %tmp, 8         ; <i32> [#uses=1]
        %tmp.upgrd.32 = or i32 %tmp21, %tmp5            ; <i32> [#uses=1]
        %tmp.upgrd.3 = trunc i32 %tmp.upgrd.32 to i16           ; <i16> [#uses=1]
        ret i16 %tmp.upgrd.3
}

which can't get matched as a bswap.

This patch makes instcombine more sophisticated about removing truncating
casts, allowing it to turn this into:

define i16 @test2(i16 %a) {
        %tmp211 = lshr i16 %a, 8
        %tmp52 = shl i16 %a, 8
        %tmp.upgrd.323 = or i16 %tmp211, %tmp52
        ret i16 %tmp.upgrd.323
}

which then matches as bswap.  This fixes bswap.ll and implements
InstCombine/cast2.ll:test[12].  This also implements cast elimination of
add/sub.

llvm-svn: 34870
 2007-03-03 05:27:34 +00:00
Nick Lewycky db42295ff2 Translate bit operations to English. 
llvm-svn: 34868
 2007-03-03 03:14:40 +00:00
Chris Lattner 960a543037 add a top-level iteration loop to instcombine. This means that it will never 
finish without combining something it is capable of.

llvm-svn: 34865
 2007-03-03 02:04:50 +00:00
Reid Spencer c34dedf686 APIntify this pass. 
llvm-svn: 34863
 2007-03-03 00:48:31 +00:00
Reid Spencer 53a3739c80 Finally get this patch right :) 
Replace expensive getZExtValue() == 0 calls with isZero() calls.

llvm-svn: 34861
 2007-03-02 23:51:25 +00:00
Reid Spencer ba547cbb2a Dang, I've done that twice now! Undo previous commit. 
llvm-svn: 34860
 2007-03-02 23:37:53 +00:00
Reid Spencer 558990e189 Use more efficient test for one value in a ConstantInt. 
llvm-svn: 34859
 2007-03-02 23:35:28 +00:00
Reid Spencer 29fe20a98b Guard against huge loop trip counts in an APInt safe way. 
llvm-svn: 34858
 2007-03-02 23:31:34 +00:00
Reid Spencer dec03a08d6 Make sure debug code is not evaluated in non-debug case. 
llvm-svn: 34856
 2007-03-02 23:15:21 +00:00
Reid Spencer 1e102971d2 1. Sort switch cases using APInt safe comparison. 
2. Make sure debug output of APInt values is safe for all bit widths.

llvm-svn: 34855
 2007-03-02 23:05:28 +00:00
Reid Spencer 43376a74af Use APInt safe isOne() method on ConstantInt instead of getZExtValue()==1 
llvm-svn: 34854
 2007-03-02 23:03:17 +00:00
Reid Spencer bb38d79ad6 Make sorting of ConstantInt be APInt clean through use of ult function. 
llvm-svn: 34853
 2007-03-02 23:01:14 +00:00
Chris Lattner b15e2b182f Fix a significant algorithm problem with the instcombine worklist. removing 
a value from the worklist required scanning the entire worklist to remove all
entries.  We now use a combination map+vector to prevent duplicates from
happening and prevent the scan.  This speeds up instcombine on a large file
from the llvm-gcc bootstrap from 189.7s to 4.84s in a debug build and from
5.04s to 1.37s in a release build.

llvm-svn: 34848
 2007-03-02 21:28:56 +00:00
Chris Lattner 51f5457ad4 minor cleanup 
llvm-svn: 34846
 2007-03-02 19:59:19 +00:00
Chris Lattner 4bd8cda3f0 switch the inliner from being recursive to being iterative. 
llvm-svn: 34832
 2007-03-02 03:11:20 +00:00
Reid Spencer 197adfaa0a Reverse a premature commital. 
llvm-svn: 34822
 2007-03-02 00:31:39 +00:00
Reid Spencer 2e54a15943 Prefer non-virtual calls to ConstantInt::isZero over virtual calls to 
Constant::isNullValue() in situations where it is possible.

llvm-svn: 34821
 2007-03-02 00:28:52 +00:00
Reid Spencer fa63226751 Although probably not necessary, guard against a potential assertion by 
using isNullValue() instead of getZExtValue() == 0.

llvm-svn: 34815
 2007-03-01 21:54:37 +00:00
Reid Spencer 17797076ef Use isUnitValue() instead of getZExtValue() == 1 which will prevent an 
assert if the ConstantInt's value is large.

llvm-svn: 34814
 2007-03-01 21:51:23 +00:00
Reid Spencer 5b0548de77 Use APInt conversion to string so the result is correct regardless of the 
bit width of the ConstantInt being converted.

llvm-svn: 34810
 2007-03-01 21:00:32 +00:00
Reid Spencer 24f1a0e78f The 64-bit constructor for ConstantInt changes from int64_t to uint64_t. 
This caused a warning for construction with -1. Avoid the warning by using
-1ULL instead.

llvm-svn: 34796
 2007-03-01 19:33:52 +00:00
Reid Spencer 6a44033465 Remove the "isSigned" parameters from ConstantRange. It turns out they 
are not needed as the results are the same with or without it.

Patch by Nicholas Lewycky.

llvm-svn: 34782
 2007-03-01 07:54:15 +00:00
Reid Spencer d373b9dc59 For PR1205: 
Adjust to changes in ConstantRange interface.

llvm-svn: 34762
 2007-02-28 22:03:51 +00:00
Reid Spencer 3a7e9d8e75 For PR1205: 
Remove ConstantInt from ConstantRange interface and adjust its users to
compensate.

llvm-svn: 34758
 2007-02-28 19:57:34 +00:00
Reid Spencer 56f784d12d For PR1205: 
First round of ConstantRange changes. This makes all CR constructors use
only APInt and not use ConstantInt. Clients are adjusted accordingly.

llvm-svn: 34756
 2007-02-28 18:57:32 +00:00
Devang Patel 97517ff930 Use efficient container SmallPtrSet 
llvm-svn: 34640
 2007-02-26 20:22:50 +00:00
Devang Patel 967b84c681 Do not unswitch loop on same value again and again. 
llvm-svn: 34638
 2007-02-26 19:31:58 +00:00
Chris Lattner c4d8e7e614 Fix InstCombine/2007-02-23-PhiFoldInfLoop.ll and PR1217 
llvm-svn: 34546
 2007-02-24 01:03:45 +00:00
Chris Lattner 1e48acb858 fix an obscure and tricky bug the inliner can hit sometimes. 
llvm-svn: 34531
 2007-02-23 19:54:30 +00:00
Jim Laskey d879dfbf1c Revert changes for a simplier solution. 
llvm-svn: 34495
 2007-02-22 16:21:18 +00:00
Jim Laskey e4ccf22c34 Itanium ABI exception handing support. 
llvm-svn: 34480
 2007-02-21 22:49:50 +00:00
Dan Gohman 8c8597c4d9 Fix typos in comments. 
llvm-svn: 34456
 2007-02-20 20:52:03 +00:00
Chris Lattner c35fe713ff remove reoptimizer-specific passes 
llvm-svn: 34439
 2007-02-20 05:31:49 +00:00
Chris Lattner b5f6d0c15a eliminate use of deprecated apis 
llvm-svn: 34417
 2007-02-19 07:34:47 +00:00
Chris Lattner 9f4707eb04 fix comment 
llvm-svn: 34395
 2007-02-18 22:10:58 +00:00
Chris Lattner a6f54c0e2c simplify pass, delete dead gvar protos as well. 
llvm-svn: 34394
 2007-02-18 22:10:34 +00:00
Chris Lattner 99c6cf60f1 convert more vectors to smallvectors, 2.8% speedup 
llvm-svn: 34333
 2007-02-15 22:52:10 +00:00
Chris Lattner af6094fe3f change some vectors to smallvectors. This speeds up instcombine on 447.dealII 
by 5%.

llvm-svn: 34332
 2007-02-15 22:48:32 +00:00
Chris Lattner 7907e5fe07 switch an std::set to a SmallPtr set, this speeds up instcombine by 9.5% 
on 447.dealII

llvm-svn: 34323
 2007-02-15 19:41:52 +00:00
Reid Spencer 09575bac2e For PR1195: 
Change use of "packed" term to "vector" in comments, strings, variable
names, etc.

llvm-svn: 34300
 2007-02-15 03:39:18 +00:00
Reid Spencer 537ee02f89 Change an assert that mentions Packed Type -> Vector Type. 
llvm-svn: 34298
 2007-02-15 03:11:20 +00:00
Reid Spencer d84d35ba70 For PR1195: 
Rename PackedType -> VectorType, ConstantPacked -> ConstantVector, and
PackedTyID -> VectorTyID. No functional changes.

llvm-svn: 34293
 2007-02-15 02:26:10 +00:00
Chris Lattner 945e437c65 Generalize TargetData strings, to support more interesting forms of data. 
Patch by Scott Michel.

llvm-svn: 34266
 2007-02-14 05:52:17 +00:00
Chris Lattner ade1c2bb51 eliminate a bunch of vector-related heap traffic 
llvm-svn: 34222
 2007-02-13 05:58:53 +00:00
Chris Lattner a06a8fd2d7 Eliminate use of ctors that take vectors. 
llvm-svn: 34219
 2007-02-13 02:10:56 +00:00
Chris Lattner a731513406 stop using methods that take vectors. 
llvm-svn: 34205
 2007-02-12 22:56:41 +00:00
Chris Lattner 32ab643df7 Switch ValueSymbolTable to use StringMap<Value*> instead of std::map<std::string, Value*> 
as its main datastructure.  There are many improvements yet to be made, but
this speeds up opt --std-compile-opts on 447.dealII by 7.3%.

llvm-svn: 34193
 2007-02-12 05:18:08 +00:00
Chris Lattner 8dd4cae4f8 simplify code by using Value::takeName 
llvm-svn: 34177
 2007-02-11 01:37:51 +00:00
Chris Lattner 6e0123b17f Simplify code by using value::takename 
llvm-svn: 34176
 2007-02-11 01:23:03 +00:00
Chris Lattner 8d4c36bb40 simplify name juggling through the use of Value::takeName. 
llvm-svn: 34175
 2007-02-11 01:08:35 +00:00
Chris Lattner c473d8e431 Privatize StructLayout::MemberOffsets, adding an accessor 
llvm-svn: 34156
 2007-02-10 19:55:17 +00:00
Chris Lattner bf6286ba04 Fix Transforms/DeadArgElim/2007-02-07-FuncRename.ll, fallout from PR411. 
This happened because deadargelim now causes VMCore to auto-rename every
function that it hacks arguments out of.  Because it hacks arguments out of
functions in a non-deterministic order, this caused the resultant numbering
to be nondet.  The fix is to just be careful to not rename functions!

llvm-svn: 34005
 2007-02-07 19:31:33 +00:00
Chris Lattner 88051b0fad shrink vmcore by moving symbol table stripping support out of VMCore into 
the one IPO pass that uses it.

llvm-svn: 33990
 2007-02-07 06:22:45 +00:00
Chris Lattner 430c9217f0 redesign the primary datastructure used by mem2reg to eliminate an 
std::map of std::vector's (ouch!).  This speeds up mem2reg by 10% on 176.gcc.

llvm-svn: 33974
 2007-02-07 01:15:04 +00:00
Chris Lattner c85e79f3e0 With the last change, we no longer need both directions of mapping from 
BBNumbers.  Instead of using a bi-directional mapping, just use a single
densemap.  This speeds up mem2reg on 176.gcc by 8%, from  1.3489 to
1.2485s.

llvm-svn: 33940
 2007-02-05 23:37:20 +00:00
Reid Spencer 557ab15e71 Apply the VISIBILITY_HIDDEN field to the remaining anonymous classes in 
the Transforms library. This reduces debug library size by 132 KB, debug
binary size by 376 KB, and reduces link time for llvm tools slightly.

llvm-svn: 33939
 2007-02-05 23:32:05 +00:00
Chris Lattner 52da61fb5c Simplify use of DFBlocks, this makes no noticable performance difference, 
but paves the way to eliminate BBNumbers.

llvm-svn: 33938
 2007-02-05 23:31:26 +00:00
Reid Spencer 193abd95c9 This file should have been removed when -raise was removed. It isn't 
used any more.

llvm-svn: 33937
 2007-02-05 23:27:02 +00:00
Chris Lattner bf67b1229b Switch InsertedPHINodes back to SmallPtrSet now that the SmallPtrSet::erase 
bug is fixed.

llvm-svn: 33932
 2007-02-05 23:11:37 +00:00
Chris Lattner 606dde0093 switch a SmallPtrSet back to an std::set for now, this caused problems. 
llvm-svn: 33930
 2007-02-05 22:28:52 +00:00
Chris Lattner 1ed84bbd2d switch an std::set over to a SmallPtrSet, speeding up mem2reg 6% on 176.gcc. 
llvm-svn: 33929
 2007-02-05 22:15:21 +00:00
Chris Lattner 70fbb9de4c switch an std::set over to SmallPtrSet, speeding up mem2reg 3.4% on 176.gcc. 
llvm-svn: 33928
 2007-02-05 22:13:11 +00:00
Chris Lattner 8fbc888d91 eliminate some malloc traffic, this speeds up mem2reg by 3.4%. 
llvm-svn: 33927
 2007-02-05 21:58:48 +00:00
Reid Spencer ca3bf1ad85 Add missing and needed #include. 
llvm-svn: 33926
 2007-02-05 21:47:39 +00:00
Reid Spencer 35a0718d82 Make the class VISIBILITY_HIDDEN. 
Reduce lexical size of the anonymous namespace.

llvm-svn: 33925
 2007-02-05 21:45:12 +00:00
Reid Spencer 1241d6d5ab For PR411: 
Adjust to changes in Module interface:
getMainFunction() -> getFunction("main")
getNamedFunction(X) -> getFunction(X)

llvm-svn: 33922
 2007-02-05 21:19:13 +00:00
Reid Spencer 3aaaa0b2bd For PR411: 
This patch replaces the SymbolTable class with ValueSymbolTable which does
not support types planes. This means that all symbol names in LLVM must now
be unique. The patch addresses the necessary changes to deal with this and
removes code no longer needed as a result. This completes the bulk of the
changes for this PR. Some cleanup patches will follow.

llvm-svn: 33918
 2007-02-05 20:47:22 +00:00
Reid Spencer e84cf92141 For PR411: 
This pass is no longer needed.

llvm-svn: 33917
 2007-02-05 20:41:05 +00:00
Reid Spencer ba09a3e5f0 Create a pass to strip dead function declarations (prototypes). This is 
for use by llvm-extract and bugpoint.

llvm-svn: 33916
 2007-02-05 20:24:25 +00:00
Chris Lattner 83ac5ae9f3 Fix miscompilations of consumer-typeset, telecomm-gsm, and 176.gcc. 
llvm-svn: 33902
 2007-02-05 05:57:49 +00:00
Reid Spencer a1d35926b7 For PR1177: 
Revert last patch which caused iteration invalidation.

llvm-svn: 33901
 2007-02-05 05:23:32 +00:00
Chris Lattner 0a28e90f2c fix a miscompilation of 176.gcc 
llvm-svn: 33900
 2007-02-05 04:09:35 +00:00
Owen Anderson f6fa108993 Use DenseMap for pointer->pointer maps. 
llvm-svn: 33897
 2007-02-05 02:39:47 +00:00
Chris Lattner 3e009e8b8f rewrite shift/shift folding, now that types are not signed. 
llvm-svn: 33892
 2007-02-05 00:57:54 +00:00
Nick Lewycky 15245953a5 Fix indenting, remove tabs. 
Learn from sext and zext. The destination value falls within the range of the
source type.

Generalize properties regarding constant ints.

Get smarter about marking blocks as unreachable. If 1 >= 2 in order for this
block to execute, then it isn't reachable.

llvm-svn: 33889
 2007-02-04 23:43:05 +00:00
Reid Spencer 3f4e6e84dc For PR1163: 
Make the Module's dependent library use a std::vector instead of SetVector
adjust #includes in .cpp files because SetVector.h is no longer included.

llvm-svn: 33855
 2007-02-04 00:40:42 +00:00
Chris Lattner 6c344e56b1 remove some dead code 
llvm-svn: 33845
 2007-02-03 23:28:07 +00:00
Reid Spencer 8de97bba5a For PR1072: 
Removing -raise has neglible positive or negative side effects so we are
opting to remove it. See the PR for comparison details.

llvm-svn: 33844
 2007-02-03 23:15:56 +00:00
Chris Lattner 1bfc7ab6a7 Switch inliner over to use DenseMap instead of std::map for ValueMap. This 
speeds up the inliner 16%.

llvm-svn: 33801
 2007-02-03 00:08:31 +00:00
Chris Lattner fc8190dbb7 Switch this back to using an std::map. DenseMap entries are getting invalidated 
llvm-svn: 33799
 2007-02-02 22:36:16 +00:00
Chris Lattner 37d400a83d Remove more malloc thrashing, this speeds up IPSCCP on kimwitu another 6.7%. 
llvm-svn: 33796
 2007-02-02 21:15:06 +00:00
Chris Lattner 3e667f3e61 Convert an std::set to SmallSet, this speeds up IPSCCP 17% on kimwitu. 
llvm-svn: 33794
 2007-02-02 20:57:39 +00:00
Chris Lattner 0e7ec675da eliminate a malloc/free for (almost) every GEP processed. This speeds up 
IPSCCP 3.3% on kimwitu.

llvm-svn: 33793
 2007-02-02 20:51:48 +00:00
Chris Lattner 067d607e0e switch hash_map's over to DenseMap in SCCP. This speeds up SCCP by 30% in 
a release-assert build on kimwitu++.

llvm-svn: 33792
 2007-02-02 20:38:30 +00:00
Reid Spencer 2f34b98cbf Remove dead code and fix indentation per Chris' review comments. 
llvm-svn: 33785
 2007-02-02 14:41:37 +00:00
Reid Spencer 0d5f9237b6 Use short form of binary operator create functions. 
llvm-svn: 33783
 2007-02-02 14:08:20 +00:00
Chris Lattner d5fea61d98 bugfix for reid's shift patch. 
llvm-svn: 33779
 2007-02-02 05:29:55 +00:00
Reid Spencer 2341c22ec7 Changes to support making the shift instructions be true BinaryOperators. 
This feature is needed in order to support shifts of more than 255 bits
on large integer types.  This changes the syntax for llvm assembly to
make shl, ashr and lshr instructions look like a binary operator:
   shl i32 %X, 1
instead of
   shl i32 %X, i8 1
Additionally, this should help a few passes perform additional optimizations.

llvm-svn: 33776
 2007-02-02 02:16:23 +00:00
Chris Lattner c904205d28 Fix Transforms/InstCombine/2007-02-01-LoadSinkAlloca.ll, a serious code 
pessimization where instcombine can sink a load (good for code size) that
prevents an alloca from being promoted by mem2reg (bad for everything).

llvm-svn: 33771
 2007-02-01 22:30:07 +00:00
Reid Spencer 26c642de74 Ensure that ConvertOperandToType generates a result conversion by 
initializing the Res variable to 0 and asserting it is not zero after the
result should have been created.

llvm-svn: 33761
 2007-02-01 19:14:51 +00:00
Chris Lattner ce494229a1 Fix bugs in the inliner having to do with single-entry phi nodes and valuemap 
updating.  These were exposed by Devang's recent passmgr changes (with
non-default passorderings) because now the inliner can be interleved with
the LCSSA pass.

llvm-svn: 33760
 2007-02-01 18:48:38 +00:00
Chris Lattner 416a8939c3 remove temporary vectors. 
llvm-svn: 33715
 2007-01-31 20:08:52 +00:00
Chris Lattner 7a63e7a7ad eliminate temporary vectors 
llvm-svn: 33713
 2007-01-31 20:07:32 +00:00
Chris Lattner 927653f27f eliminate temporary vectors 
llvm-svn: 33712
 2007-01-31 19:59:55 +00:00
Chris Lattner 4fc18a4cb8 Revert another incorrectly applied chunk, which fixes InstCombine/vec_insert_to_shuffle.ll 
llvm-svn: 33705
 2007-01-31 18:09:17 +00:00
Chris Lattner f96f4a874c eliminate temporary vectors 
llvm-svn: 33693
 2007-01-31 04:40:53 +00:00
Chris Lattner aa17576933 Move symbolic constant folding code to libanalysis. 
llvm-svn: 33688
 2007-01-31 00:53:10 +00:00
Chris Lattner 024f4ab383 Adjust #includes to match movement of constant folding code from transformutils to libanalysis. 
llvm-svn: 33680
 2007-01-30 23:46:24 +00:00
Chris Lattner 2ae054adb0 move a bunch of constant folding code f rom Transforms/Utils/Local.cpp into 
libanalysis/ConstantFolding.cpp.

llvm-svn: 33679
 2007-01-30 23:45:45 +00:00
Chris Lattner 14789a92e1 remove now-dead code. 
llvm-svn: 33678
 2007-01-30 23:29:47 +00:00
Chris Lattner f94bed3f13 the inliner pass now passes targetdata down through the inliner api's 
llvm-svn: 33677
 2007-01-30 23:28:39 +00:00
Chris Lattner ad84a730ba The inliner/cloner can now optionally take TargetData info, which can be 
used by constant folding.

llvm-svn: 33676
 2007-01-30 23:22:39 +00:00
Chris Lattner e3eda25641 pass TD to constant folding apis 
llvm-svn: 33674
 2007-01-30 23:16:15 +00:00
Chris Lattner 0d74d3c09b use smallvector instead of vector to make constant folding a bit more efficient 
llvm-svn: 33672
 2007-01-30 23:15:19 +00:00
Chris Lattner 6fc4b46d43 adjust to api change 
llvm-svn: 33671
 2007-01-30 23:14:52 +00:00
Chris Lattner 2c4610e4ca Change constant folding APIs to take an optional TargetData, and change 
ConstantFoldInstOperands/ConstantFoldCall to take a pointer to an array
of operands + size, instead of an std::vector.

In some cases, switch to using a SmallVector instead of a vector.
This allows us to get rid of some special case gross code that was there
to avoid the cost of constructing a vector.

llvm-svn: 33670
 2007-01-30 23:13:49 +00:00
Chris Lattner 2b15f2ba9d remove some bits that are not yet meant to land. 
llvm-svn: 33666
 2007-01-30 22:50:32 +00:00
Chris Lattner 4284f6463a Symbolically evaluate constant expressions like &A[123] - &A[4].f. 
This occurs in C++ code like:

#include <iostream>
#include <iterator>
int a[] = { 1, 2, 3, 4, 5 };
int main() {
  using namespace std;
  copy(a, a + sizeof(a)/sizeof(a[0]), ostream_iterator<int>(cout, "\n"));
  return 0;
}

Before we would decide the loop trip count is:
sdiv (i32 sub (i32 ptrtoint (i32* getelementptr ([5 x i32]* @a, i32 0, i32 5) to i32), i32 ptrtoint ([5 x i32]* @a to i32)), i32 4)

Now we decide it is "5".  Amazing.

This code will need to be refactored, but I'm doing that as a separate
commit.

llvm-svn: 33665
 2007-01-30 22:32:46 +00:00
Reid Spencer 5301e7c605 For PR1136: Rename GlobalVariable::isExternal as isDeclaration to avoid 
confusion with external linkage types.

llvm-svn: 33663
 2007-01-30 20:08:39 +00:00
Nick Lewycky 56639800c9 Simplify names of lattice values. SGTUNE becomes SGT, for example. 
Fix initializeConstant, now initializeInt. Fixes major performance
bottleneck.

X == Y || X->DominatedBy(Y) is redundant. Remove the X == Y part.

Fix crasher in makeEqual where getOrInsertNode would add a new constant,
producing an NE relationship between the two members we're trying to make
equal. This now allows us to mark more BBs as unreachable.

llvm-svn: 33612
 2007-01-29 02:56:54 +00:00
Anton Korobeynikov 037c867b54 Propagate changes from my local tree. This patch includes: 
1. New parameter attribute called 'inreg'. It has meaning "place this
parameter in registers, if possible". This is some generalization of
gcc's regparm(n) attribute. It's currently used only in X86-32 backend.
2. Completely rewritten CC handling/lowering code inside X86 backend.
Merged stdcall + c CCs and fastcall + fast CC.
3. Dropped CSRET CC. We cannot add struct return variant for each
target-specific CC (e.g. stdcall + csretcc and so on).
4. Instead of CSRET CC introduced 'sret' parameter attribute. Setting in
on first attribute has meaning 'This is hidden pointer to structure
return. Handle it gently'.
5. Fixed small bug in llvm-extract + add new feature to
FunctionExtraction pass, which relinks all internal-linkaged callees
from deleted function to external linkage. This will allow further
linking everything together.

NOTEs: 1. Documentation will be updated soon.
       2. llvm-upgrade should be improved to translate csret => sret.
          Before this, there will be some unexpected test fails.
llvm-svn: 33597
 2007-01-28 13:31:35 +00:00
Chris Lattner c8fb6de78c Fix test/Transforms/InstCombine/2007-01-27-AndICmp.ll, a miscompilation of 
Mozilla that Anton tracked down.

llvm-svn: 33591
 2007-01-27 23:08:34 +00:00
Jim Laskey c56315c2b5 Change the MachineDebugInfo to MachineModuleInfo to better reflect usage 
for debugging and exception handling.

llvm-svn: 33550
 2007-01-26 21:22:28 +00:00
Reid Spencer 3ac38e99b9 For PR761: 
The Module::setEndianness and Module::setPointerSize methods have been
removed. Instead you can get/set the DataLayout. Adjust thise accordingly.

llvm-svn: 33530
 2007-01-26 08:11:39 +00:00
Devang Patel 13058a5ae9 Inherit CallGraphSCCPass directly from Pass. 
llvm-svn: 33514
 2007-01-26 00:47:38 +00:00
Devang Patel 5292e65791 Inherit BasicBlockPass directly from Pass. 
llvm-svn: 33511
 2007-01-25 23:23:25 +00:00
Chris Lattner 79f08506f1 Make llvm-extract preserve the callingconv of prototypes in the extracted 
code.

llvm-svn: 33500
 2007-01-25 17:38:26 +00:00
Reid Spencer 31a4ef4dc1 Cleanup checks in the load and store of casted pointer transforms. Two 
changes: (1) don't special case for i1 any more, (2) use the new
TargetData::getTypeSizeInBits method to ensure source and dest are the
same bit width.

llvm-svn: 33427
 2007-01-22 05:51:25 +00:00
Reid Spencer 2eadb5310d For PR970: 
Clean up handling of isFloatingPoint() and dealing with PackedType.
Patch by Gordon Henriksen!

llvm-svn: 33415
 2007-01-21 00:29:26 +00:00
Reid Spencer 9a4bed06dd Revise the store V, (cast P) -> store (cast V) -> P transform. 
We only want to do this if the src and destination types have the same
bit width. This patch uses TargetData::getTypeSizeInBits() instead of
making a special case for integer types and avoiding the transform if
they don't match.

llvm-svn: 33414
 2007-01-20 23:35:48 +00:00
Chris Lattner 50ee0e40e5 Teach TargetData to handle 'preferred' alignment for each target, and use 
these alignment amounts to align scalars when we can.  Patch by Scott Michel!

llvm-svn: 33409
 2007-01-20 22:35:55 +00:00
Owen Anderson dfd79ad319 Correct a comment. 
llvm-svn: 33397
 2007-01-20 10:07:23 +00:00
Reid Spencer e928a15c9e For this transform: store V, (cast P) -> store (cast V), P 
don't allow the transform if V and the pointer's element type are different
width integer types.

llvm-svn: 33371
 2007-01-19 21:20:31 +00:00
Reid Spencer a94d394ad2 For PR1043: 
This is the final patch for this PR. It implements some minor cleanup
in the use of IntegerType, to wit:
1. Type::getIntegerTypeMask -> IntegerType::getBitMask
2. Type::Int*Ty changed to IntegerType* from Type*
3. ConstantInt::getType() returns IntegerType* now, not Type*

This also fixes PR1120.

Patch by Sheng Zhou.

llvm-svn: 33370
 2007-01-19 21:13:56 +00:00
Chris Lattner 120ab038eb Fix InstCombine/2007-01-18-VectorInfLoop.ll, a case where instcombine 
infinitely loops.

llvm-svn: 33343
 2007-01-18 22:16:33 +00:00
Reid Spencer c050af9126 Clean up some code around the store V, (cast P) -> store (cast V), P 
transform. Change some variable names so it is clear what is source and
what is dest of the cast. Also, add an assert to ensure that the integer
to integer case is asserting if the bitwidths are different. This prevents
illegal casts from being formed and catches bitwidth bugs sooner.

llvm-svn: 33337
 2007-01-18 18:54:33 +00:00
Reid Spencer a8a1547370 For PR1094: 
Adjust the use of SetVector for changes in SetVector's interface.
Patch by Gordon Henriksen.

llvm-svn: 33280
 2007-01-17 02:23:37 +00:00
Chris Lattner 479a9fc492 Fix a regression in my isIntegral patch that broke 471.omnetpp. This is 
because TargetData::getTypeSize() returns the same for i1 and i8.  This fix
is not right for the full generality of bitwise types, but it fixes the
regression.

llvm-svn: 33237
 2007-01-15 17:55:20 +00:00
Nick Lewycky 6ce36cff3a Don't print address of ETNode. Print the DFSNumIn which uniquely identifies 
the basic block and is stable across runs in gdb or valgrind.

Make Node::update handle edges which dominate and are tighter than
existing edges.

Replace makeEqual's "squeeze theorem" code. Fixes miscompilation.

Gate the calls to defToOps and opsToDef. Before this, we were getting IG
edges about values which weren't even defined in the dominated area. This
reduces the size of the IG by about half.

llvm-svn: 33236
 2007-01-15 14:30:07 +00:00
Chris Lattner c8dcede292 Implement InstCombine/phi.ll:test7, deletion of trivial value loops for 
induction variables.

llvm-svn: 33234
 2007-01-15 07:30:06 +00:00
Chris Lattner 27df1db485 simplify some code now that types are signless 
llvm-svn: 33232
 2007-01-15 07:02:54 +00:00
Chris Lattner a4beeef76c delete stores to allocas with one use. This is a trivial form of DSE which 
often kicks in for ?: expressions.

llvm-svn: 33231
 2007-01-15 06:51:56 +00:00
Chris Lattner 03c4953cdd rename Type::isIntegral to Type::isInteger, eliminating the old Type::isInteger. 
rename Type::getIntegralTypeMask to Type::getIntegerTypeMask.

This makes naming much more consistent.  For example, there are now no longer any
instances of IntegerType that are not considered isInteger! :)

llvm-svn: 33225
 2007-01-15 02:27:26 +00:00
Chris Lattner 1942249c5b Eliminate calls to isInteger, generalizing code and tightening checks as needed. 
llvm-svn: 33218
 2007-01-15 01:55:30 +00:00
Chris Lattner f739d01059 Fix Analysis/Dominators/2006-10-02-BreakCritEdges.ll 
llvm-svn: 33210
 2007-01-15 00:15:09 +00:00
Chris Lattner 6ee923f3bb instcombine has always been miscompiling fcmp x, x, disregarding possible 
NANs.  This fixes PR1111 and Transforms/InstCombine/2007-01-14-FcmpSelf.ll

llvm-svn: 33208
 2007-01-14 19:42:17 +00:00
Chris Lattner 9818a6fd76 Fix PR1110 and Analysis/Dominators/2007-01-14-BreakCritEdges.ll by being 
more careful about unreachable code when updating dominator info.

llvm-svn: 33204
 2007-01-14 18:33:35 +00:00
Chris Lattner 387bf3f700 Fix Transforms/InstCombine/2007-01-13-ExtCompareMiscompile.ll, which is part 
of PR1107

llvm-svn: 33185
 2007-01-13 23:11:38 +00:00
Reid Spencer 47bb5c996e Fix indentation to prior level for easier diffs. 
llvm-svn: 33184
 2007-01-13 05:10:53 +00:00
Nick Lewycky 4294446fcb "Default context" blocks can occur after a non-default one. This meant 
that properties were being applied where they didn't belong. Fixes crash
in new MiBench testcase.

Also mark debugging code as such in #ifdef.

llvm-svn: 33177
 2007-01-13 02:05:28 +00:00
Chris Lattner ff7434a526 Fix a minor bug handling constant exprs, introduced by a recent patch. 
llvm-svn: 33175
 2007-01-13 00:42:58 +00:00
Chris Lattner ca82a908e3 fix a bug in a recent patch 
llvm-svn: 33164
 2007-01-13 00:02:49 +00:00
Chris Lattner f5e5236b57 simplify some code 
llvm-svn: 33150
 2007-01-12 22:51:20 +00:00
Chris Lattner 3b6058c278 Remove over-general comparisons 
llvm-svn: 33147
 2007-01-12 22:49:11 +00:00
Chris Lattner e3721e3002 eliminate redundant check 
llvm-svn: 33132
 2007-01-12 18:35:11 +00:00
Chris Lattner 15649084e9 Branch conditions must be i1 
llvm-svn: 33129
 2007-01-12 18:30:11 +00:00
Reid Spencer 7a9c62baa6 For PR1064: 
Implement the arbitrary bit-width integer feature. The feature allows
integers of any bitwidth (up to 64) to be defined instead of just 1, 8,
16, 32, and 64 bit integers.

This change does several things:
1. Introduces a new Derived Type, IntegerType, to represent the number of
   bits in an integer. The Type classes SubclassData field is used to
   store the number of bits. This allows 2^23 bits in an integer type.
2. Removes the five integer Type::TypeID values for the 1, 8, 16, 32 and
   64-bit integers. These are replaced with just IntegerType which is not
   a primitive any more.
3. Adjust the rest of LLVM to account for this change.

Note that while this incremental change lays the foundation for arbitrary
bit-width integers, LLVM has not yet been converted to actually deal with
them in any significant way. Most optimization passes, for example, will
still only deal with the byte-width integer types.  Future increments
will rectify this situation.

llvm-svn: 33113
 2007-01-12 07:05:14 +00:00
Reid Spencer cddc9dfe97 Implement review feedback for the ConstantBool->ConstantInt merge. Chris 
recommended that getBoolValue be replaced with getZExtValue and that
get(bool) be replaced by get(const Type*, uint64_t). This implements
those changes.

llvm-svn: 33110
 2007-01-12 04:24:46 +00:00
Nick Lewycky ee32ee0250 If we know that it's a constant being casted, propagate through the cast 
instruction. Doesn't work the other way though (can't recover bits that
have been truncated).

llvm-svn: 33104
 2007-01-12 01:23:53 +00:00
Nick Lewycky 4a74a75bbb Clean up logic after ConstantBool removal. 
llvm-svn: 33096
 2007-01-12 00:02:12 +00:00
Reid Spencer 542964f55b Rename BoolTy as Int1Ty. Patch by Sheng Zhou. 
llvm-svn: 33076
 2007-01-11 18:21:29 +00:00
Zhou Sheng bd23db9968 Remove unnecessary boolean type check. 
llvm-svn: 33075
 2007-01-11 14:38:17 +00:00
Zhou Sheng 75b871fb1e For PR1043: 
Merge ConstantIntegral and ConstantBool into ConstantInt.
Remove ConstantIntegral and ConstantBool from LLVM.

llvm-svn: 33073
 2007-01-11 12:24:14 +00:00
Zhou Sheng 691b263e07 Fixed indentation. 
llvm-svn: 33072
 2007-01-11 10:33:26 +00:00
Nick Lewycky 5d6ede524a Quiet compiler warning. The only reason the function is marked virtual 
is so that it can be called from inside a debugger.

llvm-svn: 33067
 2007-01-11 02:38:21 +00:00
Nick Lewycky 2fc338f923 New predicate simplifier! 
Please do not enable, there is still some known miscompile problem.

llvm-svn: 33066
 2007-01-11 02:32:38 +00:00
Chris Lattner 8571caa99b Fix a bug in heap-sra that caused compilation failure of office-ispell. 
llvm-svn: 33043
 2007-01-09 23:29:37 +00:00
Jeff Cohen 223004cd12 Unbreak VC++ build. 
llvm-svn: 33021
 2007-01-08 20:17:17 +00:00
Reid Spencer 8f166b0ef3 Comparison of primitive type sizes should now be done in bits, not bytes. 
This patch converts getPrimitiveSize to getPrimitiveSizeInBits where it is
appropriate to do so (comparison of integer primitive types).

llvm-svn: 33012
 2007-01-08 16:32:00 +00:00
Reid Spencer bf96e02a54 For PR1097: 
Enable complex addressing modes on 64-bit platforms involving two induction
variables by keeping a size and scale in 64-bits not 32.
Patch by Dan Gohman.

llvm-svn: 33011
 2007-01-08 16:17:51 +00:00
Reid Spencer 4f98e62831 Types should be const. 
llvm-svn: 33001
 2007-01-07 21:45:41 +00:00
Chris Lattner 950d0e9926 this pass is unused 
llvm-svn: 32998
 2007-01-07 18:12:43 +00:00
Chris Lattner 34acba48cc Change the interface to Module::getOrInsertFunction to be easier to use,to resolve PR1088, and to help PR411. 
This simplifies many clients also

llvm-svn: 32989
 2007-01-07 08:12:01 +00:00
Chris Lattner d97f1936bb prepare for adjustment to getOrInsertFunction method 
llvm-svn: 32985
 2007-01-07 07:54:34 +00:00
Chris Lattner cc4715e06e relax some types 
llvm-svn: 32982
 2007-01-07 07:22:20 +00:00
Chris Lattner 9641ab26ec relax types 
llvm-svn: 32981
 2007-01-07 06:59:47 +00:00
Chris Lattner fbc524fe87 relax some types 
llvm-svn: 32980
 2007-01-07 06:58:05 +00:00
Chris Lattner 0816559b13 add -debug output for -indvars. 
llvm-svn: 32971
 2007-01-07 01:14:12 +00:00
Chris Lattner 7051d758de Fix regressions in InstCombine/call-cast-target.ll and InstCombine/2003-11-13-ConstExprCastCall.ll 
llvm-svn: 32959
 2007-01-06 19:53:32 +00:00
Reid Spencer 32af9e8cc5 For PR411: 
Take an incremental step towards type plane elimination. This change
separates types from values in the symbol tables by finally making use
of the TypeSymbolTable class. This yields more natural interfaces for
dealing with types and unclutters the SymbolTable class.

llvm-svn: 32956
 2007-01-06 07:24:44 +00:00
Chris Lattner c343a99786 this final call to canLosslesslyBitCastTo is dead, because ValueRequiresCast 
is only called on integers.

llvm-svn: 32949
 2007-01-06 02:11:56 +00:00
Chris Lattner 400f959a0c simplify some more code now that there are not multiple different integer 
types of the same size

llvm-svn: 32948
 2007-01-06 02:09:32 +00:00
Chris Lattner 64d87b0215 eliminate some uses of canLosslesslyBitCastTo, this actually makes the code stronger, by nuking 
relational pointer comparisons with casts.

llvm-svn: 32947
 2007-01-06 01:45:59 +00:00
Chris Lattner 3fe98ae10a no need to worry about int vs uint any more. 
llvm-svn: 32946
 2007-01-06 01:37:35 +00:00
Chris Lattner d7b6ea166d Implement InstCombine/vec_shuffle.ll:%test7, simplifying shuffles with 
undef operands.

llvm-svn: 32899
 2007-01-05 07:36:08 +00:00
Chris Lattner 17c7c030c2 fold things like a^b != c^a -> b != c. This implements InstCombine/xor.ll:test27 
llvm-svn: 32893
 2007-01-05 03:04:57 +00:00