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6292 Commits

Author SHA1 Message Date
Chris Lattner
a101affbdb make this a static function instead of a method. 
llvm-svn: 92795
 2010-01-05 22:30:42 +00:00
Chris Lattner
53b9ed70ee more rearrangement and cleanup, fix my test failure. 
llvm-svn: 92792
 2010-01-05 22:21:18 +00:00
Chris Lattner
45cd7ba394 cleanup 
llvm-svn: 92790
 2010-01-05 22:07:33 +00:00
Chris Lattner
2f69f6a822 remove two trunc xforms that are subsumed by EvaluateInDifferentType. 
The only difference is that EvaluateInDifferentType checks to ensure
they are profitable before doing them :)

llvm-svn: 92788
 2010-01-05 22:01:41 +00:00
Chris Lattner
13293b9738 just remove this xform which is subsumed by others. 
llvm-svn: 92775
 2010-01-05 21:16:30 +00:00
Chris Lattner
3aac94341a move a trunc-specific transform out of commonIntCastTransforms into visitTrunc. 
llvm-svn: 92773
 2010-01-05 21:11:17 +00:00
Benjamin Kramer
0ba7479f2c Move remaining stuff to the isInteger predicate. 
llvm-svn: 92771
 2010-01-05 21:05:54 +00:00
Chris Lattner
18ed3a6976 move a zext specific xform out of commonIntCastTransforms into visitZExt and modernize it. 
llvm-svn: 92770
 2010-01-05 21:04:47 +00:00
Chris Lattner
4c21bfec50 move a trunc-specific xform out of commonIntCastTransforms into visitTrunc 
llvm-svn: 92768
 2010-01-05 20:57:30 +00:00
Chris Lattner
e293a03aff reduce indentation 
llvm-svn: 92766
 2010-01-05 20:56:24 +00:00
Benjamin Kramer
c233521d45 Convert a ton of simple integer type equality tests to the new predicate. 
llvm-svn: 92760
 2010-01-05 20:07:06 +00:00
Chris Lattner
f457542506 optimize comparisons against cttz/ctlz/ctpop, patch by Alastair Lynn! 
llvm-svn: 92745
 2010-01-05 18:09:56 +00:00
Dan Gohman
4b9a39d586 Nick Lewycky pointed out that this code makes changes unconditionally. 
llvm-svn: 92739
 2010-01-05 17:50:58 +00:00
Dan Gohman
fff95c0489 Set Changed properly after calling DeleteDeadPHIs. 
llvm-svn: 92735
 2010-01-05 16:31:45 +00:00
Dan Gohman
e4a22bdd4a Use do+while instead of while for loops which obviously have a 
non-zero trip count. Use SmallVector's pop_back_val().

llvm-svn: 92734
 2010-01-05 16:27:25 +00:00
Dan Gohman
7924aacfe4 Fix indentation. 
llvm-svn: 92733
 2010-01-05 16:20:55 +00:00
Dan Gohman
41cc1e1fc4 Make RecursivelyDeleteTriviallyDeadInstructions, 
RecursivelyDeleteDeadPHINode, and DeleteDeadPHIs return a flag
indicating whether they made any changes.

llvm-svn: 92732
 2010-01-05 15:45:31 +00:00
Benjamin Kramer
cd6b749245 Add newline at EOF. 
llvm-svn: 92727
 2010-01-05 13:32:48 +00:00
Benjamin Kramer
e90a3c66c4 Avoid going through the LLVMContext for type equality where it's safe to dereference the type pointer. 
llvm-svn: 92726
 2010-01-05 13:12:22 +00:00
Chris Lattner
09b91ecf3c prune some #includes. 
llvm-svn: 92712
 2010-01-05 07:54:43 +00:00
Chris Lattner
58ddbda58c split and/or/xor out into one overly-large (2000LOC) file. However, I think 
it does make sense to keep them together, at least for now.

llvm-svn: 92711
 2010-01-05 07:50:36 +00:00
Chris Lattner
7201f09ff2 missed file with previous commit. 
llvm-svn: 92710
 2010-01-05 07:45:02 +00:00
Chris Lattner
dd39b601af split instcombine of shifts out to its own file. 
llvm-svn: 92709
 2010-01-05 07:44:46 +00:00
Chris Lattner
e75f48f8bd eliminate getBitCastOperand and simplify some over-complex inbounds stuff. 
llvm-svn: 92708
 2010-01-05 07:42:10 +00:00
Chris Lattner
e21194fe22 split call handling out to InstCombineCalls.cpp 
llvm-svn: 92707
 2010-01-05 07:32:13 +00:00
Chris Lattner
491e03b6ef optimize cttz and ctlz when we can prove something about the 
leading/trailing bits.  Patch by Alastair Lynn!

llvm-svn: 92706
 2010-01-05 07:23:56 +00:00
Chris Lattner
e36e3b586d this inline function moved to addsub 
llvm-svn: 92705
 2010-01-05 07:20:54 +00:00
Chris Lattner
63747a10a8 split add/sub out to its own file. Eliminate use of 
dyn_castNotVal in the X+~X transform.  dyn_castNotVal is
dramatic overkill for what the xform needed.

llvm-svn: 92704
 2010-01-05 07:18:46 +00:00
Chris Lattner
5ea00f56bd all the places we use hasOneUse() we know are instructions, so inline 
and simplify.

llvm-svn: 92700
 2010-01-05 07:04:23 +00:00
Chris Lattner
081decf118 eliminate AssociativeOpt and its last uses. 
llvm-svn: 92697
 2010-01-05 07:01:16 +00:00
Chris Lattner
4d773ac576 inline the FoldICmpLogical functor. 
llvm-svn: 92695
 2010-01-05 06:59:49 +00:00
Chris Lattner
1e57d0e7e3 inline the 'AddRHS' transformation, simplifying things significantly. 
Eliminate the 'AddMaskingAnd' transformation, it is redundant with this
more general code right below it:
  // A+B --> A|B iff A and B have no bits set in common.

llvm-svn: 92693
 2010-01-05 06:29:13 +00:00
Chris Lattner
17a2db8444 remove massive over-genality manifested as a big template 
that got instantiated.  There is no reason for instcombine
to try this hard for simple associative optimizations.  Next
up, eliminate the template completely.

llvm-svn: 92692
 2010-01-05 06:24:06 +00:00
Chris Lattner
92f9d59ad1 split mul/div/rem instructions out to their own file. 
llvm-svn: 92689
 2010-01-05 06:09:35 +00:00
Chris Lattner
8822b80a65 clean up header. 
llvm-svn: 92688
 2010-01-05 06:05:07 +00:00
Chris Lattner
e4910dc145 split select out to its own file. 
llvm-svn: 92687
 2010-01-05 06:03:12 +00:00
Chris Lattner
b55724e825 split out load/store/alloca. 
llvm-svn: 92685
 2010-01-05 05:57:49 +00:00
Chris Lattner
916d97c2d5 reduce indentation 
llvm-svn: 92684
 2010-01-05 05:42:08 +00:00
Chris Lattner
e22030e730 split vector stuff out to InstCombineVectorOps.cpp 
llvm-svn: 92683
 2010-01-05 05:36:20 +00:00
Chris Lattner
23ff3ce8eb split PHI node stuff out to InstCombinePHI.cpp 
llvm-svn: 92682
 2010-01-05 05:31:55 +00:00
Chris Lattner
48618eeec3 convert various IntrinsicInst's to use class instead of struct. 
llvm-svn: 92681
 2010-01-05 05:21:26 +00:00
Chris Lattner
2ef4ba7cf5 fix an infinite loop in reassociate building emacs. 
llvm-svn: 92679
 2010-01-05 04:55:35 +00:00
David Greene
6b20914d8a Change errs() to dbgs(). 
llvm-svn: 92639
 2010-01-05 01:28:37 +00:00
David Greene
a48859b420 Change errs() to dbgs(). 
llvm-svn: 92636
 2010-01-05 01:28:29 +00:00
David Greene
6c314b2f2b Change errs() to dbgs(). 
llvm-svn: 92633
 2010-01-05 01:28:12 +00:00
David Greene
706266dce6 Change errs() to dbgs(). 
llvm-svn: 92631
 2010-01-05 01:28:07 +00:00
David Greene
04f5c49e6f Change errs() to dbgs(). 
llvm-svn: 92629
 2010-01-05 01:28:05 +00:00
David Greene
e5c3a6f658 Change errs() to dbgs(). 
llvm-svn: 92627
 2010-01-05 01:27:54 +00:00
David Greene
0d082a1e9d Change errs() to dbgs(). 
llvm-svn: 92625
 2010-01-05 01:27:51 +00:00
David Greene
ccb57dd5d2 Change errs() to dbgs(). 
llvm-svn: 92624
 2010-01-05 01:27:47 +00:00
David Greene
ab5e347e1d Change errs() to dbgs(). 
llvm-svn: 92623
 2010-01-05 01:27:44 +00:00
David Greene
9bb1c8a001 Change errs() to dbgs(). 
llvm-svn: 92622
 2010-01-05 01:27:39 +00:00
David Greene
633e3e29d8 Change errs() to dbgs(). 
llvm-svn: 92620
 2010-01-05 01:27:33 +00:00
David Greene
342f06bea0 Change errs() to dbgs(). 
llvm-svn: 92619
 2010-01-05 01:27:30 +00:00
David Greene
6c61de5712 Change errs() to dbgs(). 
llvm-svn: 92617
 2010-01-05 01:27:24 +00:00
David Greene
bb6730f5ac Change errs() to dbgs(). 
llvm-svn: 92615
 2010-01-05 01:27:21 +00:00
David Greene
0a35321dc2 Change errs() to dbgs(). 
llvm-svn: 92614
 2010-01-05 01:27:19 +00:00
David Greene
9befdbf1a8 Change errs() to dbgs(). 
llvm-svn: 92613
 2010-01-05 01:27:17 +00:00
David Greene
02e79531be Change errs() to dbgs(). 
llvm-svn: 92612
 2010-01-05 01:27:15 +00:00
David Greene
937fdd9ec0 Change errs() to dbgs(). 
llvm-svn: 92611
 2010-01-05 01:27:11 +00:00
David Greene
578f63538f Change errs() to dbgs(). 
llvm-svn: 92610
 2010-01-05 01:27:09 +00:00
David Greene
d5a25b5d1f Change errs() to dbgs(). 
llvm-svn: 92609
 2010-01-05 01:27:06 +00:00
David Greene
15100f4246 Change errs() to dbgs(). 
llvm-svn: 92608
 2010-01-05 01:27:04 +00:00
David Greene
a013a3b5e4 Change errs() to dbgs(). 
llvm-svn: 92607
 2010-01-05 01:27:01 +00:00
David Greene
d0587e9991 Change errs() to dbgs(). 
llvm-svn: 92606
 2010-01-05 01:26:57 +00:00
David Greene
1d478b6184 Change errs() to dbgs(). 
llvm-svn: 92605
 2010-01-05 01:26:54 +00:00
David Greene
e07c8e1668 Change errs() to dbgs(). 
llvm-svn: 92604
 2010-01-05 01:26:52 +00:00
David Greene
991e882855 Change errs() to dbgs(). 
llvm-svn: 92603
 2010-01-05 01:26:49 +00:00
David Greene
94ab26dd76 Change errs() to dbgs(). 
llvm-svn: 92602
 2010-01-05 01:26:45 +00:00
David Greene
2805ab874b Change errs() to dbgs(). 
llvm-svn: 92601
 2010-01-05 01:26:44 +00:00
David Greene
e7608c8372 Change errs() to dbgs(). 
llvm-svn: 92600
 2010-01-05 01:26:41 +00:00
David Greene
afac983b1a Change errs() to dbgs(). 
llvm-svn: 92599
 2010-01-05 01:26:39 +00:00
Devang Patel
3b08c33f33 Remove dead debug info intrinsics. 
Intrinsic::dbg_stoppoint
 Intrinsic::dbg_region_start 
 Intrinsic::dbg_region_end 
 Intrinsic::dbg_func_start
AutoUpgrade simply ignores these intrinsics now.

llvm-svn: 92557
 2010-01-05 01:10:40 +00:00
Daniel Dunbar
1fb9148421 Fix some struct/class specifier mismatches. 
llvm-svn: 92550
 2010-01-05 00:15:58 +00:00
Chris Lattner
3b060b2d41 Truncate GEP indexes larger than the pointer size down to pointer size 
when doing this transform if the GEP is not inbounds.  No testcase because
it is very difficult to trigger this: instcombine already canonicalizes
GEP indices to pointer size, so it relies specific permutations of the
instcombine worklist.

Thanks to Duncan for pointing this possible problem out.

llvm-svn: 92495
 2010-01-04 18:57:15 +00:00
Chris Lattner
8304a93ff4 silence a bogus 'might be used uninit' warning from GCC. 
llvm-svn: 92494
 2010-01-04 18:48:26 +00:00
Chris Lattner
e19878577c move some more cast-related stuff 
llvm-svn: 92471
 2010-01-04 07:59:07 +00:00
Mikhail Glushenkov
38e36d577a 80-col violations, trailing whitespace. 
llvm-svn: 92470
 2010-01-04 07:55:25 +00:00
Chris Lattner
f9920fbac9 move the [Can]EvaluateInDifferentType functions out to InstCombineCasts.cpp 
llvm-svn: 92469
 2010-01-04 07:54:59 +00:00
Chris Lattner
7a5037baf5 split 943 lines of instcombine out to a new InstCombineCasts.cpp 
file.  InstructionCombining.cpp is now down to a svelte 9300 lines :)

llvm-svn: 92468
 2010-01-04 07:53:58 +00:00
Chris Lattner
fed736376e split instcombine of compares (visit[FI]Cmp) out to 
a new InstCombineCompares.cpp file.

llvm-svn: 92467
 2010-01-04 07:37:31 +00:00
Chris Lattner
176c21d33e update cmakefile 
llvm-svn: 92466
 2010-01-04 07:19:55 +00:00
Chris Lattner
fbcc4eb5a5 move the 'SimplifyDemandedFoo' methods out to their own file, cutting 1K lines out of instcombine.cpp 
llvm-svn: 92465
 2010-01-04 07:17:19 +00:00
Chris Lattner
cf0889fda3 split the instcombine class definition out to a header shared 
among the instcombine library.

llvm-svn: 92463
 2010-01-04 07:12:23 +00:00
Chris Lattner
cb0fe8a20b remove a ton of unneeded LLVMContext stuff. 
llvm-svn: 92462
 2010-01-04 07:02:48 +00:00
Chris Lattner
ec9a1ab1bb move InstCombineWorklist out to its own header. 
llvm-svn: 92461
 2010-01-04 06:30:00 +00:00
Chris Lattner
2e86be5607 forgot to svn add these. 
llvm-svn: 92460
 2010-01-04 06:28:20 +00:00
Chris Lattner
2d9948f5f1 move instcombine to its own library, it's past time. 
llvm-svn: 92459
 2010-01-04 06:23:24 +00:00
Chris Lattner
ce3f5f3448 implement an instcombine xform needed by clang's codegen 
on the example in PR4216.  This doesn't trigger in the testsuite,
so I'd really appreciate someone scrutinizing the logic for
correctness.

llvm-svn: 92458
 2010-01-04 06:03:59 +00:00
Chris Lattner
eb68b810a8 pull my debug hooks out, I'm done with this xform for now. 
llvm-svn: 92446
 2010-01-03 06:58:48 +00:00
Nick Lewycky
ebb78c871c Small cleanups, refactor some duplicated code into a single method. No 
functionality change.

llvm-svn: 92445
 2010-01-03 04:39:07 +00:00
Chris Lattner
647c629ee4 generalize the previous transformation to handle indexing into 
arrays of structs and other arrays, so long as all the subsequent
indexes are constants.  This triggers frequently for stuff like:

@divisions = internal constant [29 x [2 x i32]] [[2 x i32] zeroinitializer, [2 x i32] [i32 0, i32 1], [2 x i32] [i32 0, i32 2], [2 x i32] [i32 0, i32 1], [2 x i32] zeroinitializer, [2 x i32] [i32 0, i32 1], [2 x i32] [i32 0, i32 1], [2 x i32] [i32 0, i32 2], [2 x i32] [i32 0, i32 2], [2 x i32] zeroinitializer, [2 x i32] zeroinitializer, [2 x i32] zeroinitializer, [2 x i32] [i32 0, i32 2], [2 x i32] [i32 0, i32 1], [2 x i32] zeroinitializer, [2 x i32] [i32 1, i32 0], [2 x i32] [i32 1, i32 1], [2 x i32] [i32 1, i32 1], [2 x i32] [i32 1, i32 2], [2 x i32] [i32 1, i32 1], [2 x i32] [i32 1, i32 0], [2 x i32] [i32 1, i32 2], [2 x i32] [i32 1, i32 2], [2 x i32] [i32 1, i32 0], [2 x i32] [i32 1, i32 0], [2 x i32] [i32 1, i32 0], [2 x i32] [i32 1, i32 1], [2 x i32] [i32 1, i32 2], [2 x i32] [i32 1, i32 2]], align 32 ; <[29 x [2 x i32]]*> [#uses=50]

	  %623 = getelementptr inbounds [29 x [2 x i32]]* @divisions, i64 0, i64 %619, i64 0 ; <i32*> [#uses=1]
	   %684 = icmp eq i32 %683, 999 

also for the "my_defs" table in 'gs', etc.

llvm-svn: 92444
 2010-01-03 03:03:27 +00:00
Nick Lewycky
b871238139 Cleanup. 
llvm-svn: 92436
 2010-01-03 00:55:31 +00:00
Chris Lattner
acb0c133ec teach instcombine to optimize idioms like A[i]&42 == 0. This 
occurs in 403.gcc in mode_mask_array, in safe-ctype.c (which
is copied in multiple apps) in _sch_istable, etc.

llvm-svn: 92427
 2010-01-02 22:08:28 +00:00
Chris Lattner
4af67af013 Teach the table lookup optimization to generate range compares 
when a consequtive sequence of elements all satisfies the 
predicate.  Like the double compare case, this generates better
code than the magic constant case and generalizes to more than
32/64 element array lookups.

Here are some examples where it triggers.  From 403.gcc, most
accesses to the rtx_class array are handled, e.g.:

@rtx_class = constant [153 x i8] c"xxxxxmmmmmmmmxxxxxxxxxxxxmxxxxxxiiixxxxxxxxxxxxxxxxxxxooxooooooxxoooooox3x2c21c2222ccc122222ccccaaaaaa<<<<<<<<<<<<<<<<<<111111111111bbooxxxxxxxxxxcc2211x", align 32 ; <[153 x i8]*> [#uses=547]
   %142 = icmp eq i8 %141, 105
@rtx_class = constant [153 x i8] c"xxxxxmmmmmmmmxxxxxxxxxxxxmxxxxxxiiixxxxxxxxxxxxxxxxxxxooxooooooxxoooooox3x2c21c2222ccc122222ccccaaaaaa<<<<<<<<<<<<<<<<<<111111111111bbooxxxxxxxxxxcc2211x", align 32 ; <[153 x i8]*> [#uses=543]
	   %165 = icmp eq i8 %164, 60      

Also, most of the 59-element arrays (mode_class/rid_to_yy, etc) 
optimized before are actually range compares.  This lets 32-bit
machines optimize them.

400.perlbmk has stuff like this:

400.perlbmk: PL_regkind, even for 32-bit:
@PL_regkind = constant [62 x i8] c"\00\00\02\02\02\06\06\06\06\09\09\0B\0B\0D\0E\0E\0E\11\12\12\14\14\16\16\18\18\1A\1A\1C\1C\1E\1F !!!$$&'((((,-.///88886789:;8$", align 32 ; <[62 x i8]*> [#uses=4]
	   %811 = icmp ne i8 %810, 33 

@PL_utf8skip = constant [256 x i8] c"\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\03\03\03\03\03\03\03\03\03\03\03\03\03\03\03\03\04\04\04\04\04\04\04\04\05\05\05\05\06\06\07\0D", align 32 ; <[256 x i8]*> [#uses=94]
	   %12 = icmp ult i8 %10, 2
           
etc.

llvm-svn: 92426
 2010-01-02 21:50:18 +00:00
Chris Lattner
c67cde71b1 theoretically the negate we find could be in a different function, check 
for this case.

llvm-svn: 92425
 2010-01-02 21:46:33 +00:00
Chris Lattner
dfb25d34f5 use enums for the over/underdefined markers for clarity. Switch 
to using -2/-3 instead of -1/-2 for a future xform.

llvm-svn: 92423
 2010-01-02 20:20:33 +00:00
Chris Lattner
07a1a284d3 remove the random sampling framework, which is not maintained anymore. 
If there is interest, it can be resurrected from SVN.  PR4912.

llvm-svn: 92422
 2010-01-02 20:07:03 +00:00
Nick Lewycky
cda0109ec5 Fix logic error in previous commit. The != case needs to become an or, not an 
and.

llvm-svn: 92419
 2010-01-02 16:14:56 +00:00
Nick Lewycky
3cc8fe073a Optimize pointer comparison into the typesafe form, now that the backends will 
handle them efficiently. This is the opposite direction of the transformation
we used to have here.

llvm-svn: 92418
 2010-01-02 15:25:44 +00:00