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3020 Commits

Author SHA1 Message Date
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