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Author SHA1 Message Date
Chris Lattner
784e8d9177 add getPointerAddressSpace() to GEP instruction, use the method 
in a few scalar xforms to simplify things.

llvm-svn: 80506
 2009-08-30 20:06:40 +00:00
Chris Lattner
dc6b5be632 eliminate InsertCastBefore, use the builder instead. 
llvm-svn: 80505
 2009-08-30 20:01:10 +00:00
Chris Lattner
2a3af9b743 eliminate InsertBitCastBefore, just use the builder instead. 
llvm-svn: 80504
 2009-08-30 19:47:22 +00:00
Chris Lattner
bbfe14087f convert a bunch more calls to InsertNewInstBefore to use 
the new Instcombine builder.

llvm-svn: 80501
 2009-08-30 18:50:58 +00:00
Chris Lattner
444e6e0118 fix typo 
llvm-svn: 80500
 2009-08-30 17:53:59 +00:00
Chris Lattner
dd71643cf1 give instcombine a custom IRBuilder that adds new instructions to the 
workslist and is set to insert new instructions before the current one.
Convert a bunch of stuff that used to call InsertNewInstBefore over to
use it, greatly simplifying code and making it more natural.

There is still a lot more to go, but this is a good start.

llvm-svn: 80492
 2009-08-30 07:44:24 +00:00
Chris Lattner
d53d314bd6 add a new InstCombineWorklist::AddValue method that works even 
if the operand is not an instruction.

Simplify most uses of AddOperandsToWorkList to use AddValue and
inline it into the one remaining callsite.

llvm-svn: 80488
 2009-08-30 06:27:41 +00:00
Chris Lattner
7dfc9cc68f move AddUsersToWorkList to the worklist processing class, make the 
argument stronger typed.

llvm-svn: 80487
 2009-08-30 06:22:51 +00:00
Chris Lattner
13202514e1 rename AddUsesToWorkList -> AddOperandsToWorkList. The 
former looks too much like AddUsersToWorkList and keeps
confusing me.

Remove AddSoonDeadInstToWorklist and change its two callers
to do the same thing in a simpler way.

llvm-svn: 80486
 2009-08-30 06:20:05 +00:00
Chris Lattner
1f8e8caacb inline the trivial AddToWorkList/RemoveFromWorkList methods 
into their callers.  simplify ReplaceInstUsesWith.  Make
EraseInstFromFunction only add operands to the worklist if
there aren't too many of them (this was a scalability win
for crazy programs that was only infrequently enforced).
Switch more code to using EraseInstFromFunction instead of
duplicating it inline.  Change some fcmp/icmp optimizations
to modify fcmp/icmp in place instead of creating a new one
and deleting the old one just to change the predicate.

llvm-svn: 80483
 2009-08-30 06:13:40 +00:00
Chris Lattner
97d6443c26 fix a bug I introduced in r80478 found by the build bot. 
llvm-svn: 80482
 2009-08-30 05:56:44 +00:00
Chris Lattner
ca6875bf57 refactor instcombine's worklist processing stuff out to its own class. 
llvm-svn: 80481
 2009-08-30 05:55:36 +00:00
Chris Lattner
741fcee014 more cleanups: remove some redundant code, and simplify some 
other places.

llvm-svn: 80478
 2009-08-30 05:30:55 +00:00
Chris Lattner
aecf0100db eliminate the temporary SrcGEPOperands smallvector. 
llvm-svn: 80477
 2009-08-30 05:08:50 +00:00
Chris Lattner
2051889d14 simplify/detangle some control flow. 
llvm-svn: 80476
 2009-08-30 05:00:50 +00:00
Chris Lattner
e5c5ff8f49 simplify and cleanup some code, remove some code that just 
does constant folding of gep's: this is already handled in
a more general way.

No functionality change.

llvm-svn: 80475
 2009-08-30 04:49:01 +00:00
Dan Gohman
cc35ffe3df Remove an unnecessary Context argument. 
llvm-svn: 80454
 2009-08-29 23:39:38 +00:00
Benjamin Kramer
34020d0ab5 Inline empty destructor. 
llvm-svn: 80431
 2009-08-29 13:38:21 +00:00
Bill Wendling
095b3c55e8 Fix warning about non-virtual destructor. 
llvm-svn: 80429
 2009-08-29 12:31:38 +00:00
Devang Patel
fbaeda732e Reapply 79977. 
Use MDNodes to encode debug info in llvm IR.

llvm-svn: 80406
 2009-08-28 23:24:31 +00:00
Andreas Neustifter
c11b0d7108 Preparation for Optimal Edge Profiling: 
This implements the maximum spanning tree algorithm on CFGs according to
weights given by the ProfileEstimator. This is then used to implement Optimal
Edge Profiling.

llvm-svn: 80358
 2009-08-28 11:28:24 +00:00
Chris Lattner
4dbe7896a5 finish a half formed thought :) 
llvm-svn: 80334
 2009-08-28 04:48:54 +00:00
Chris Lattner
f37893e7a1 Fix PR3913, patch by Jakub Staszak! 
llvm-svn: 80327
 2009-08-28 00:43:14 +00:00
Chris Lattner
7785b6000e Implement a new optimization in the inliner: if inlining multiple 
calls into a function and if the calls bring in arrays, try to merge
them together to reduce stack size.  For example, in the testcase
we'd previously end up with 4 allocas, now we end up with 2 allocas.

As described in the comments, this is not really the ideal solution
to this problem, but it is surprisingly effective.  For example, on
176.gcc, we end up eliminating 67 arrays at "gccas" time and another
24 at "llvm-ld" time.

One piece of concern that I didn't look into: at -O0 -g with
forced inlining this will almost certainly result in worse debug
info.  I think this is acceptable though given that this is a case
of "debugging optimized code", and we don't want debug info to
prevent the optimizer from doing things anyway.

llvm-svn: 80215
 2009-08-27 06:29:33 +00:00
Chris Lattner
61d49fed23 unbreak the build, yay for symlinks + makefiles. :( 
llvm-svn: 80205
 2009-08-27 04:43:05 +00:00
Chris Lattner
358f90e5b1 reduce header #include'age 
llvm-svn: 80204
 2009-08-27 04:32:07 +00:00
Chris Lattner
becb2e9534 enhance InlineFunction to be able to optionally return 
a the list of static allocas that it inlined.

llvm-svn: 80203
 2009-08-27 04:20:52 +00:00
Chris Lattner
7fbde3dedf smallvectorize the list of returns built by CloneAndPruneFunctionInto. 
llvm-svn: 80202
 2009-08-27 04:02:30 +00:00
Chris Lattner
8b277ab324 remove CloneTrace, which appears to be dead since 2004. 
llvm-svn: 80201
 2009-08-27 03:56:43 +00:00
Chris Lattner
71e787d93b reduce inlining factor some stuff out to a static helper function, 
and other code cleanups.  No functionality change.

llvm-svn: 80199
 2009-08-27 03:51:50 +00:00
Owen Anderson
2ed352c8b6 Make this into a static method. 
llvm-svn: 80170
 2009-08-26 22:55:11 +00:00
Devang Patel
10c075a316 Revert 79977. It causes llvm-gcc bootstrap failures on some platforms. 
llvm-svn: 80073
 2009-08-26 05:01:18 +00:00
Dan Gohman
1c96cf0732 Remove unused variables. 
llvm-svn: 80058
 2009-08-26 00:13:22 +00:00
Dan Gohman
4d20610e6e Eliminate the unused Context argument on one of the ICmpInst and FCmpInst 
constructors.

llvm-svn: 80049
 2009-08-25 23:17:54 +00:00
Dan Gohman
cce6c79d6d Rename Instruction::isIdenticalTo to Instruction::isIdenticalToWhenDefined, 
and introduce a new Instruction::isIdenticalTo which tests for full
identity, including the SubclassOptionalData flags. Also, fix the
Instruction::clone implementations to preserve the SubclassOptionalData
flags. Finally, teach several optimizations how to handle
SubclassOptionalData correctly, given these changes.

This fixes the counterintuitive behavior of isIdenticalTo not comparing
the full value, and clone not returning an identical clone, as well as
some subtle bugs that could be caused by these.

Thanks to Nick Lewycky for reporting this, and for an initial patch!

llvm-svn: 80038
 2009-08-25 22:11:20 +00:00
Dan Gohman
e298d55930 Special-case static allocas in IndVarSimplify's loop invariant 
sinking code, since they are special. If the loop preheader happens
to be the entry block of a function, don't sink static allocas
out of it. This fixes PR4775.

llvm-svn: 80010
 2009-08-25 17:42:10 +00:00
Owen Anderson
2f84faae31 Comment-ify. 
llvm-svn: 80009
 2009-08-25 17:42:07 +00:00
Owen Anderson
fe7348b43e Switch to SmallVector. 
llvm-svn: 80007
 2009-08-25 17:35:37 +00:00
Owen Anderson
66ea4dea86 Pull out this predicate loop into a helper function. 
llvm-svn: 80006
 2009-08-25 17:26:32 +00:00
Devang Patel
7d42bfab6c Update DebugInfo interface to use metadata, instead of special named llvm.dbg.... global variables, to encode debugging information in llvm IR. This is mostly a mechanical change that tests metadata support very well. 
This change speeds up llvm-gcc by more then 6% at "-O0 -g" (measured by compiling InstructionCombining.cpp!)

llvm-svn: 79977
 2009-08-25 05:24:07 +00:00
Dale Johannesen
77c3fb475f Allow multiple occurrences of -inline-threshold on 
the command line.  This gives llvm-gcc developers
a way to control inlining (documented as "not intended
for end users").

llvm-svn: 79966
 2009-08-25 01:13:58 +00:00
Owen Anderson
af732792b7 Handle a corner case when extracing code regions where one of the immediate successor 
of an extracted block contains a PHI using a value defined in the extracted region.

With this patch, the partial inliner now passes MultiSource/Applications.

llvm-svn: 79963
 2009-08-25 00:54:39 +00:00
Owen Anderson
7113af190c When extracting SEME regions of code, the extractor needs to update the dominator tree for split return blocks. 
llvm-svn: 79957
 2009-08-24 23:32:14 +00:00
Chris Lattner
39262eb119 prune the #includes in raw_ostream.h by moving a 
member out of line. ftostr is not particularly speedy,
so that method is presumably not perf sensitive.

llvm-svn: 79885
 2009-08-24 03:52:50 +00:00
Benjamin Kramer
e5458c19a2 Kill off more cerr/cout uses and prune includes a bit. 
llvm-svn: 79852
 2009-08-23 11:37:21 +00:00
Daniel Dunbar
40ba5f6f58 Fix -Asserts warnings. 
llvm-svn: 79849
 2009-08-23 10:29:55 +00:00
Chris Lattner
f536c93134 convert LoopInfo.h and GraphWriter.h to use raw_ostream 
llvm-svn: 79836
 2009-08-23 07:19:13 +00:00
Chris Lattner
bd73307361 eliminate uses of cerr() 
llvm-svn: 79834
 2009-08-23 07:05:07 +00:00
Chris Lattner
89d3d59e83 remove a few DOUTs here and there. 
llvm-svn: 79832
 2009-08-23 06:35:02 +00:00
Chris Lattner
1c0452caeb Change Pass::print to take a raw ostream instead of std::ostream, 
update all code that this affects.

llvm-svn: 79830
 2009-08-23 06:03:38 +00:00
Chris Lattner
ea2bfd7a9f eliminate the std::ostream form of WriteAsOperand and update clients. 
This also updates dominator related stuff.

llvm-svn: 79825
 2009-08-23 05:17:37 +00:00
Chris Lattner
8500c36f86 remove the std::ostream version of module and type printing. 
llvm-svn: 79823
 2009-08-23 04:52:46 +00:00
Chris Lattner
01dae858b6 eliminate the "Value" printing methods that print to a std::ostream. 
This required converting a bunch of stuff off DOUT and other cleanups.

llvm-svn: 79819
 2009-08-23 04:37:46 +00:00
Dan Gohman
6ec8176e22 Rename hasNoUnsignedOverflow and hasNoSignedOverflow to hasNoUnsignedWrap 
and hasNoSignedWrap, for consistency with the nuw and nsw properties.

llvm-svn: 79539
 2009-08-20 17:11:38 +00:00
Dan Gohman
5b725f1a48 Fix a few places to check if TargetData is available before using it. 
llvm-svn: 79493
 2009-08-19 23:38:22 +00:00
Dan Gohman
e982de2e30 Make SROA and PredicateSimplifier cope if TargetData is not 
available. This is very conservative for now.

llvm-svn: 79442
 2009-08-19 18:22:18 +00:00
Dan Gohman
ba656de4a4 Use hasDefinitiveInitializer() instead of testing the same thing 
by hand, and fix a few places that were using hasInitializer() that
appear to depend on the initializer value.

llvm-svn: 79441
 2009-08-19 18:20:44 +00:00
Nick Lewycky
47bc7e0bd0 Fix up PHI nodes correctly in the presence of unreachable BBs, part two. Also 
delete a newed pointer, and improve readability a little bit.

llvm-svn: 79411
 2009-08-19 07:16:57 +00:00
Nick Lewycky
ed3dcdbdb8 Be more careful when modifying PHI nodes. Patch by Andre Tavares. 
llvm-svn: 79407
 2009-08-19 06:24:33 +00:00
Dan Gohman
807652ac3a Fix SimplifyLibcalls and ValueTracking to check mayBeOverridden 
before performing optimizations based on constant string values.

llvm-svn: 79384
 2009-08-19 00:11:12 +00:00
Dan Gohman
0b1af29372 Fix a bug that caused globalopt to miscompile tramp3d: don't miss 
unruly indices for arrays that are members of structs.

llvm-svn: 79337
 2009-08-18 14:58:19 +00:00
Dan Gohman
b4a24b3b8b Make TargetData optional in MemCpyOptimizer. 
llvm-svn: 79306
 2009-08-18 01:17:52 +00:00
Dan Gohman
3137ac23bc Make TargetData optional in SimplifyLibCalls. 
llvm-svn: 79298
 2009-08-18 00:48:13 +00:00
Anton Korobeynikov
c9d9a008b5 The attached patches attempt to fix cross builds. For example, if you 
try to use i686-darwin to build for arm-eabi, you'll quickly run into
several false assumptions that the target OS must be the same as the
host OS. These patches split $(OS) into $(HOST_OS) and $(TARGET_OS) to
help builds like "make check" and the test-suite able to cross
compile. Along the way a target of *-unknown-eabi is defined as
"Freestanding" so that TARGET_OS checks have something to work with.

Patch by Sandeep Patel!

llvm-svn: 79296
 2009-08-18 00:40:33 +00:00
Dan Gohman
e78d27bcf9 Update comments to new-style syntax. 
llvm-svn: 79263
 2009-08-17 18:45:31 +00:00
Nick Lewycky
afaae7957e Don't crash on critical edge. Patch by Andre Tavares. 
llvm-svn: 79252
 2009-08-17 17:00:57 +00:00
Dan Gohman
e8847ebe10 Fix debug output to include a newline after printing a Value, now 
that Value's operator<< doesn't include one.

llvm-svn: 79240
 2009-08-17 15:25:05 +00:00
Duncan Sands
d0eda03882 Don't access the first element of a potentially empty 
vector (&Formals[0]).  With this change llvm-gcc builds
with expensive checking enabled for C, C++ and Fortran.
While there, change a std::vector into a SmallVector.
This is partly gratuitous, but mostly because not all
STL vector implementations define the data method (and
it should be faster).

llvm-svn: 79237
 2009-08-17 14:33:27 +00:00
Nick Lewycky
e791519ea3 Don't crash trying to promote VLAs. 
llvm-svn: 79226
 2009-08-17 05:37:31 +00:00
Eli Friedman
ca19f19760 Fix for PR3016: detect the tricky case, where there are 
unfoldable references to a PHI node in the block being folded, and disable
the transformation in that case.  The correct transformation of such PHI
nodes depends on whether BB dominates Succ, and dominance is expensive 
to compute here.  (Alternatively, it's possible to check whether any 
uses are live, but that's also essentially a dominance calculation. 
Another alternative is to use reg2mem, but it probably isn't a good idea to
use that in simplifycfg.)

Also, remove some incorrect code from CanPropagatePredecessorsForPHIs 
which is made unnecessary with this patch: it didn't consider the case 
where a PHI node in BB has multiple uses.

llvm-svn: 79174
 2009-08-16 04:23:49 +00:00
Benjamin Kramer
5c54156e82 Don't try to get the context from an erased Instruction. 
llvm-svn: 79134
 2009-08-15 21:07:49 +00:00
Nick Lewycky
de61ef6c5e SSI construction should just go ahead and ignore instructions in unreachable 
blocks.

llvm-svn: 79132
 2009-08-15 20:12:18 +00:00
Dan Gohman
b3aa090ddf Make TargetData optional in GlobalOpt and ArgumentPromotion. 
llvm-svn: 78967
 2009-08-14 00:11:03 +00:00
Owen Anderson
dc11fe967d Actually privatize a IntegerTypes, and fix a few bugs exposed by this. 
llvm-svn: 78955
 2009-08-13 23:27:32 +00:00
Owen Anderson
9df206d02d Push LLVMContexts through the IntegerType APIs. 
llvm-svn: 78948
 2009-08-13 21:58:54 +00:00
Mon P Wang
d56e4482fc When InstCombine simplifies a load -> extract element to gep -> load, place 
the new load by the old load instead of by the extract element because
a store could have occurred between the load and extract element.

llvm-svn: 78891
 2009-08-13 05:12:13 +00:00
Andreas Bolka
a2220fbb8d Simplify conditional. 
llvm-svn: 78889
 2009-08-13 03:05:20 +00:00
Andreas Bolka
68a2326175 Simplify and reduce indentation using early exits. 
No intended functionality change.

llvm-svn: 78888
 2009-08-13 03:00:57 +00:00
Andreas Bolka
c4476bdb2e DEBUGify some DOUTs. 
llvm-svn: 78887
 2009-08-13 02:45:03 +00:00
Andreas Bolka
00d6ad063a Prune trailing whitespace. 
llvm-svn: 78886
 2009-08-13 02:40:50 +00:00
Dan Gohman
00ee3a9a1a Transform -X/C to X/-C, implementing a README.txt entry. 
llvm-svn: 78812
 2009-08-12 16:37:02 +00:00
Dan Gohman
d5b6e35080 Optimize (x/C)*C to x if the division is exact. 
llvm-svn: 78811
 2009-08-12 16:33:09 +00:00
Dan Gohman
9ea1b2644b Update instcombine's debug output to account for Value*'s operator<< 
not appending its own newline.

llvm-svn: 78810
 2009-08-12 16:28:31 +00:00
Dan Gohman
9a6b2f19e5 Remove a bunch more now-unnecessary Context arguments. 
llvm-svn: 78809
 2009-08-12 16:23:25 +00:00
Dan Gohman
ccb751285b Eliminate a bunch of now unnecessary explicit Context variables. 
llvm-svn: 78808
 2009-08-12 16:04:34 +00:00
Owen Anderson
dbf9a912fb Add contexts to some of the MVT APIs. No functionality change yet, just the infrastructure work needed to get the contexts to where they need to be first. 
llvm-svn: 78759
 2009-08-12 00:36:31 +00:00
Dan Gohman
8d69df5773 Optimize exact sdiv by a constant power of 2 to ashr. 
llvm-svn: 78714
 2009-08-11 20:47:47 +00:00
Dan Gohman
e3fa540e7a Remove unnecessary casts. 
llvm-svn: 78664
 2009-08-11 15:15:10 +00:00
Devang Patel
4609ecd4bd Remove dead metadata. 
llvm-svn: 78651
 2009-08-11 06:31:57 +00:00
Owen Anderson
b4bce99769 Rename MVT to EVT, in preparation for splitting SimpleValueType out into its own struct type. 
llvm-svn: 78610
 2009-08-10 22:56:29 +00:00
Daniel Dunbar
87825212a4 More ProfileInfo improvements. 
- Part of optimal static profiling patch sequence by Andreas Neustifter.

 - Store edge, block, and function information separately for each functions
   (instead of in one giant map).

 - Return frequencies as double instead of int, and use a sentinel value for
   missing information.

llvm-svn: 78477
 2009-08-08 17:43:09 +00:00
Devang Patel
625352f701 Fix dom frontier update. This fixes PR4667. 
Patch by Jakub Staszak.

llvm-svn: 78388
 2009-08-07 17:16:44 +00:00
Dan Gohman
1c41d60c4a Fix a bunch of namespace pollution. 
llvm-svn: 78363
 2009-08-07 01:32:21 +00:00
Devang Patel
ee39ff2666 Use DebugInfoFinder. 
llvm-svn: 78333
 2009-08-06 20:53:06 +00:00
Owen Anderson
3d0e1b855d Privatize the StructType table, which unfortunately involves routing contexts through a number of APIs. 
llvm-svn: 78258
 2009-08-05 23:16:16 +00:00
Dan Gohman
bee2eedb5f Check for !isa<Constant> instead of isa<Instruction>. This 
matches what the comment says, and it avoids spurious BitCast
instructions for Argument values.

llvm-svn: 78121
 2009-08-04 23:23:56 +00:00
Dan Gohman
39f93f6443 Add a new Constant::getIntegerValue helper function, and convert a 
few places in InstCombine to use it, to fix problems handling pointer
types. This fixes the recent llvm-gcc bootstrap error.

llvm-svn: 78005
 2009-08-03 22:07:33 +00:00
Eli Friedman
af54b9b643 Make SimplifyDemandedUseBits generate vector constants where 
appropriate.  Patch per report on llvmdev.  No testcase because the 
original report didn't come with a testcase, and I can't come up with a case
that actually fails.

llvm-svn: 77986
 2009-08-03 19:15:42 +00:00
Owen Anderson
1dc40e205b Move a few more APIs back to 2.5 forms. The only remaining ones left to change back are 
metadata related, which I'm waiting on to avoid conflicting with Devang.

llvm-svn: 77721
 2009-07-31 20:28:14 +00:00
Dan Gohman
0831bdef1d Fix GVN's debug output, now that operator<< on Value* doesn't print 
a trailing newline.

llvm-svn: 77719
 2009-07-31 20:24:18 +00:00
Bill Wendling
6920c80ab6 - Convert the rest of the DOUTs to DEBUG+errs(). 
- One formatting change.

No intended functionality change.

llvm-svn: 77717
 2009-07-31 19:52:24 +00:00
Eli Friedman
7bb0485237 PR4662: Fix a crash introduced by the recent LLVMContext changes. 
llvm-svn: 77716
 2009-07-31 19:36:47 +00:00
Owen Anderson
d0e6352c97 Move getTrue() and getFalse() to 2.5-like APIs. 
llvm-svn: 77685
 2009-07-31 17:39:07 +00:00
Owen Anderson
93ccaf5c60 Move more code back to 2.5 APIs. 
llvm-svn: 77635
 2009-07-30 23:03:37 +00:00
Daniel Dunbar
81f704c26a Twines: Don't allow implicit conversion from integers, this is too tricky. 
llvm-svn: 77605
 2009-07-30 17:37:43 +00:00
Daniel Dunbar
4d07efb3c4 Switch obvious clients to Twine instead of utostr (when they were already using 
a Twine, e.g., for names).
 - I am a little ambivalent about this; we don't want the string conversion of
   utostr, but using overload '+' mixed with string and integer arguments is
   sketchy. On the other hand, this particular usage is something of an idiom.

llvm-svn: 77579
 2009-07-30 04:20:37 +00:00
Douglas Gregor
8c9b60cabc Eliminate a few unused-variable warnings 
llvm-svn: 77519
 2009-07-29 22:41:10 +00:00
Owen Anderson
881d928f9b Move types back to the 2.5 API. 
llvm-svn: 77516
 2009-07-29 22:17:13 +00:00
Daniel Dunbar
89cb72a6bc Fix PR4645 which was fallout from the fix for PR4641. 
- Call RAUW to delete all instructions (this is a patch from Nick Lewycky).

llvm-svn: 77512
 2009-07-29 22:00:43 +00:00
Benjamin Kramer
da986c3fc9 Remove now unused Context variables. 
llvm-svn: 77495
 2009-07-29 19:14:17 +00:00
Owen Anderson
0ce2151b36 Move ConstantExpr to 2.5 API. 
llvm-svn: 77494
 2009-07-29 18:55:55 +00:00
Nick Lewycky
e0524c1795 Bulk erasing instructions without RAUWing them is unsafe. Instead, break them 
into a new BB that has no predecessors.

llvm-svn: 77433
 2009-07-29 05:17:50 +00:00
Devang Patel
cb23671431 Rename MDNode.h header. It defines MDnode and other metadata classes. 
New name is Metadata.h.

llvm-svn: 77370
 2009-07-28 21:49:47 +00:00
Owen Anderson
390e9778d4 Return ConstantVector to 2.5 API. 
llvm-svn: 77366
 2009-07-28 21:19:26 +00:00
Owen Anderson
aa8c94b051 Change ConstantArray to 2.5 API. 
llvm-svn: 77347
 2009-07-28 18:32:17 +00:00
Dan Gohman
0d0dd7b732 Teach instcombine to respect and preserve inbounds. Add inbounds 
to a few tests where it is required for the expected transformation.

llvm-svn: 77290
 2009-07-28 01:40:03 +00:00
Mike Stump
8902846c69 Fix a small little typo. 
llvm-svn: 77289
 2009-07-28 01:35:34 +00:00
Dan Gohman
11eb2ee32c Replace dyn_castGetElementPtr with dyn_cast<GEPOperator>. 
llvm-svn: 77286
 2009-07-28 00:37:50 +00:00
Dan Gohman
361e911b89 Grab the LLVMContext and parent Module of SI ahead of the 
point where SI can get deleted. This fixes a use of free'd memory.
This fixes Externals/Povray.

llvm-svn: 77285
 2009-07-28 00:37:06 +00:00
Mike Stump
6cc3ea28df Fix a release-asserts warning. Debug functions should be marked used, 
if there are no other uses.  If people don't need this routine
anymore, if should be deleted.

llvm-svn: 77274
 2009-07-27 23:33:34 +00:00
Mike Stump
be4029ff76 Avoid build warnings. 
llvm-svn: 77271
 2009-07-27 23:14:11 +00:00
Owen Anderson
d729f993b8 Move ConstantStruct back to 2.5 API. 
llvm-svn: 77266
 2009-07-27 22:29:26 +00:00
Owen Anderson
256c2c250e Move ConstantFP construction back to the 2.5-ish API. 
llvm-svn: 77247
 2009-07-27 20:59:43 +00:00
Devang Patel
dfa0528df7 Do not seed mstadata into the value map. 
llvm-svn: 77208
 2009-07-27 17:17:04 +00:00
Daniel Dunbar
4a36d5dcfd Remove Value::getName{Start,End}, the last of the old Name APIs. 
llvm-svn: 77152
 2009-07-26 09:48:23 +00:00
Daniel Dunbar
64abfd0337 Remove Value::getNameLen 
llvm-svn: 77148
 2009-07-26 08:34:35 +00:00
Daniel Dunbar
75a66c519b Eliminate some uses of DOUT, cerr, and getNameStart(). 
llvm-svn: 77145
 2009-07-26 07:49:05 +00:00
Daniel Dunbar
038a7f0d35 Remove Value::{isName, getNameRef}. 
Also, change MDString to use a StringRef.

llvm-svn: 77098
 2009-07-25 23:55:21 +00:00
Daniel Dunbar
251177c96e Initial update to VMCore to use Twines for string arguments. 
- The only meat here is in Value.{h,cpp} the rest is essential 'const
   std::string &' -> 'const Twine &'.

llvm-svn: 77048
 2009-07-25 04:41:11 +00:00
Eric Christopher
b5f8390b6c Fix 80-col violations. 
llvm-svn: 77045
 2009-07-25 02:45:27 +00:00
Eric Christopher
df9c86fc26 Move ExtractElementInst to ::Create instead of new. Update all uses. 
llvm-svn: 77044
 2009-07-25 02:28:41 +00:00
Dan Gohman
9a7deba67e Convert a few more things to use raw_ostream. 
llvm-svn: 77039
 2009-07-25 01:43:01 +00:00
Dan Gohman
fdf1a11a27 Convert a few more uses of llvm/Support/Streams.h to raw_ostream. 
llvm-svn: 77033
 2009-07-25 01:13:51 +00:00
Dan Gohman
acc5d6eaae Make AliasAnalysis and related classes use 
getAnalysisIfAvailable<TargetData>().

llvm-svn: 77028
 2009-07-25 00:48:42 +00:00
Daniel Dunbar
8496064116 More migration to raw_ostream, the water has dried up around the iostream hole. 
- Some clients which used DOUT have moved to DEBUG. We are deprecating the
   "magic" DOUT behavior which avoided calling printing functions when the
   statement was disabled. In addition to being unnecessary magic, it had the
   downside of leaving code in -Asserts builds, and of hiding potentially
   unnecessary computations.

llvm-svn: 77019
 2009-07-25 00:23:56 +00:00
Owen Anderson
cc33e89571 Revert the ConstantInt constructors back to their 2.5 forms where possible, thanks to contexts-on-types. More to come. 
llvm-svn: 77011
 2009-07-24 23:12:02 +00:00
Dan Gohman
b895f668cc AliasAnalysis wants sizes in address-units, not bits. 
llvm-svn: 77009
 2009-07-24 23:01:30 +00:00
Dan Gohman
58619d5ad2 Fix this condition I accidentally inverted. 
llvm-svn: 76988
 2009-07-24 18:31:07 +00:00
Dan Gohman
f1a01b8cc0 Convert several more passes to use getAnalysisIfAvailable<TargetData>() 
instead of getAnalysis<TargetData>().

llvm-svn: 76982
 2009-07-24 18:13:53 +00:00
Daniel Dunbar
339c88008f Move more to raw_ostream, provide support for writing MachineBasicBlock, 
LiveInterval, etc to raw_ostream.

llvm-svn: 76965
 2009-07-24 10:36:58 +00:00
Daniel Dunbar
e3fea713f1 Switch to getNameStr(). 
llvm-svn: 76962
 2009-07-24 08:24:36 +00:00
Daniel Dunbar
b5adc13728 Convert StringMap to using StringRef for its APIs. 
- Yay for '-'s and simplifications!

 - I kept StringMap::GetOrCreateValue for compatibility purposes, this can
   eventually go away. Likewise the StringMapEntry Create functions still follow
   the old style.

 - NIFC.

llvm-svn: 76888
 2009-07-23 18:17:34 +00:00
Chris Lattner
2ed4453d0e refactor a blob of code out to a new 'FoldOrOfFCmps' function and 
simplify it.

llvm-svn: 76866
 2009-07-23 05:46:22 +00:00
Chris Lattner
c687344f0c Make some existing optimizations that would only trigger on scalars 
also apply to vectors.  This allows us to compile this:

#include <emmintrin.h>
__m128i a(__m128 a, __m128 b) { return a==a & b==b; }
__m128i b(__m128 a, __m128 b) { return a!=a | b!=b; }

to:

_a:
	cmpordps	%xmm1, %xmm0
	ret
_b:
	cmpunordps	%xmm1, %xmm0
	ret

with clang instead of to a ton of horrible code.

llvm-svn: 76863
 2009-07-23 05:32:17 +00:00
Chris Lattner
af6fdef894 refactor a bunch of code out into a helper function, 
no functionality change.

llvm-svn: 76859
 2009-07-23 05:14:02 +00:00
Daniel Dunbar
51818313fe Remove unnecessary store to temporary std::string. 
llvm-svn: 76782
 2009-07-22 20:46:46 +00:00
Eli Friedman
ca2e01b721 Don't give a massive inlining cost bonus to available_externally 
functions with a single use; eliminating the single use may eliminate 
the function from the current module, but usually doesn't eliminate 
it from the final program.

llvm-svn: 76730
 2009-07-22 08:12:59 +00:00
Owen Anderson
cc287b28c9 Get rid of the Pass+Context magic. 
llvm-svn: 76702
 2009-07-22 00:24:57 +00:00
Dan Gohman
b45091f0f9 Convert instcombine from using using getAnalysis<TargetData> to 
getAnalysisIfAvailable<TargetData>.

llvm-svn: 76676
 2009-07-21 23:21:54 +00:00
Owen Anderson
7f61f8dc30 Rename getConstantInt{True|False} to get{True|False} at Chris' behest. 
llvm-svn: 76598
 2009-07-21 18:03:38 +00:00
Ted Kremenek
60d0ab4838 Update CMake files. 
llvm-svn: 76595
 2009-07-21 17:43:20 +00:00
Owen Anderson
b64eef73cf Move a bit more state over to the LLVMContext. 
llvm-svn: 76533
 2009-07-21 02:47:59 +00:00
Chris Lattner
31022c9412 use ExpandInlineAsm on TargetLowering instead of TargetAsmInfo. 
llvm-svn: 76442
 2009-07-20 17:52:52 +00:00
Dan Gohman
00b05492f1 Revert the addition of hasNoPointerOverflow to GEPOperator. 
Getelementptrs that are defined to wrap are virtually useless to
optimization, and getelementptrs that are undefined on any kind
of overflow are too restrictive -- it's difficult to ensure that
all intermediate addresses are within bounds. I'm going to take
a different approach.

Remove a few optimizations that depended on this flag.

llvm-svn: 76437
 2009-07-20 17:43:30 +00:00
Chris Lattner
eac40b1473 implement a new magic global "llvm.compiler.used" which is like llvm.used, but 
doesn't cause ".no_dead_strip" to be emitted on darwin.

llvm-svn: 76399
 2009-07-20 06:14:25 +00:00
Bill Wendling
1a10a060cb Add plumbing for the `linker_private' linkage type. This type is meant for 
"private" symbols which the assember shouldn't strip, but which the linker may
remove after evaluation. This is mostly useful for Objective-C metadata.

This is plumbing, so we don't have a use of it yet. More to come, etc.

llvm-svn: 76385
 2009-07-20 01:03:30 +00:00
Eli Friedman
e507c1afaa Canonicalize bitcasts between types like <1 x i64> and i64 to 
insertelement/extractelement.

I'm not entirely sure this is precisely what we want to do: should we 
prefer bitcast(insertelement) or insertelement(bitcast)?  Similarly. should we 
prefer extractelement(bitcast) or bitcast(extractelement)?

llvm-svn: 76345
 2009-07-18 23:06:53 +00:00
Eli Friedman
debc43cb11 Back out 76300; apparently the preference is to canonicalize the other 
way (bitcast -> insert/extractelement).

llvm-svn: 76325
 2009-07-18 19:04:16 +00:00
Chris Lattner
ffd009f039 add a fixme 
llvm-svn: 76324
 2009-07-18 18:49:04 +00:00
Eli Friedman
65a5fe312a Add combine: X sdiv (1 << Y) -> X udiv (1 << Y) when X doesn't have the 
sign bit set.

llvm-svn: 76304
 2009-07-18 09:53:21 +00:00
Eli Friedman
cb34ee3ac3 Remove no-op check. 
llvm-svn: 76302
 2009-07-18 09:21:25 +00:00
Eli Friedman
b7b1eca368 Remove dead check. 
llvm-svn: 76301
 2009-07-18 09:12:15 +00:00
Eli Friedman
f1878fcda1 Canonicalize insert/extractelement from single-element vectors into 
bitcasts.

It would also be possible to canonicalize the other way; does anyone 
have a preference?

llvm-svn: 76300
 2009-07-18 09:07:47 +00:00
Eli Friedman
7b1597133d Fix simplifylibcalls memset recognition to work on 64-bit platforms 
where int is 32 bits.

llvm-svn: 76293
 2009-07-18 08:34:51 +00:00
Nick Lewycky
ec10fcbd04 Replace intersectWith with maximalIntersectWith. The latter guarantees that 
all values belonging to the intersection will belong to the resulting range.
The former was inconsistent about that point (either way is fine, just pick
one.) This is part of PR4545.

llvm-svn: 76289
 2009-07-18 06:34:42 +00:00
Eli Friedman
b5b88b60b3 Fix the inline cost calculation to take into account instructions 
which cannot be folded even if they have constant operands. Significantly
helps if_spppsubr.c attached to PR4573.

llvm-svn: 76285
 2009-07-18 05:26:06 +00:00
Eli Friedman
c0d63a2fec Add line breaks to make the debug output a bit more readable. 
llvm-svn: 76284
 2009-07-18 05:12:58 +00:00
Dan Gohman
e45061eefe Convert more code to use Operator instead of explicitly handling both 
ConstantExpr and Instruction. This involves duplicating some code
between GetElementPtrInst and GEPOperator, but it's not a lot.

llvm-svn: 76265
 2009-07-17 23:55:56 +00:00
Dan Gohman
93cbd452ed Make BasicAliasAnalysis and Value::getUnderlyingObject use 
GEPOperator's hasNoPointer0verflow(), and make a few places in instcombine
that create GEPs that may overflow clear the NoOverflow value. Among
other things, this partially addresses PR2831.

llvm-svn: 76252
 2009-07-17 22:25:10 +00:00
Dan Gohman
bda1bacf36 Fix some typos in a comment. 
llvm-svn: 76249
 2009-07-17 22:16:21 +00:00
Dan Gohman
25a722cc45 Add a new Operator class, for handling Instructions and ConstantExprs 
in a convenient manner, factoring out some common code from
InstructionCombining and ValueTracking. Move the contents of
BinaryOperators.h into Operator.h and use Operator to generalize them
to support ConstantExprs as well as Instructions.

llvm-svn: 76232
 2009-07-17 20:47:02 +00:00
Daniel Dunbar
8ce5e03431 Initialize another Context, in the hopes of unbreaking CBE. 
llvm-svn: 76184
 2009-07-17 16:20:23 +00:00
Eli Friedman
b56b3ca224 Replace isTrapping with a new, similar method called 
isSafeToSpeculativelyExecute. The new method is a bit closer to what 
the callers actually care about in that it rejects more things callers 
don't want.  It also adds more precise handling for integer 
division, and unifies code for analyzing the legality of a speculative 
load.

llvm-svn: 76150
 2009-07-17 04:28:42 +00:00
Owen Anderson
21d2d69727 Move the ConstantInt uniquing table into LLVMContextImpl. This exposed a number of issues in 
our current context-passing stuff, which is also fixed here

llvm-svn: 76089
 2009-07-16 18:04:31 +00:00
Owen Anderson
4483fbda5e Revert yesterday's change by removing the LLVMContext parameter to AllocaInst and MallocInst. 
llvm-svn: 75863
 2009-07-15 23:53:25 +00:00
Eli Friedman
6aa39dcd93 Switch invars away from using isTrapping when it really shouldn't be 
using it.

llvm-svn: 75852
 2009-07-15 22:48:29 +00:00
Eli Friedman
048d13f9bb Don't restrict the set of instructions where we try to constant-fold the 
operands; it's possible to end up with a constant-foldable operand to 
most instructions, even those which can't trap.

llvm-svn: 75845
 2009-07-15 22:13:34 +00:00
Dan Gohman
6cc9cb6dc4 Fix indentation. 
llvm-svn: 75723
 2009-07-15 01:26:32 +00:00
Dan Gohman
81885d5b80 Make makeLoopInvariant report whether it made any changes or not, 
and use this to simplify more code.

llvm-svn: 75722
 2009-07-15 01:25:43 +00:00
Owen Anderson
8c85061ee6 Move EVER MORE stuff over to LLVMContext. 
llvm-svn: 75703
 2009-07-14 23:09:55 +00:00
Dale Johannesen
35fc3243a8 Revert 75571; I'm convinced this isn't the right thing to do. 
llvm-svn: 75642
 2009-07-14 17:48:25 +00:00
Torok Edwin
f955a6ef49 llvm_unreachable->llvm_unreachable(0), LLVM_UNREACHABLE->llvm_unreachable. 
This adds location info for all llvm_unreachable calls (which is a macro now) in
!NDEBUG builds.
In NDEBUG builds location info and the message is off (it only prints
"UREACHABLE executed").

llvm-svn: 75640
 2009-07-14 16:55:14 +00:00
Dan Gohman
084661b1b5 Require IVUsers after LCSSA, since LCSSA does not preserve IVUsers. 
This results in the pass manager running IVUsers only once for
indvars, instead of twice.

llvm-svn: 75633
 2009-07-14 14:26:23 +00:00
Eli Friedman
63028801b8 Fix trivial todo in instcombine. 
llvm-svn: 75586
 2009-07-14 02:01:53 +00:00
Dan Gohman
493855541b Update LoopSimplify and LoopUnswitch to use the new makeLoopInvariant 
function.

llvm-svn: 75584
 2009-07-14 01:37:59 +00:00
Dan Gohman
b9f3a3c96b Fix indvars to not assume that a loop with a single unique exit 
block has a single unique exiting block.

llvm-svn: 75579
 2009-07-14 01:09:02 +00:00
Dale Johannesen
de1ed58935 Don't delete asm's just because their inputs are undefined; 
xor R, R is a common and valid idiom for zeroing a register, for example.

llvm-svn: 75571
 2009-07-14 00:45:38 +00:00
Eli Friedman
a6c7a3d44e PR4548: optimize zext+udiv+trunc to udiv. 
llvm-svn: 75539
 2009-07-13 22:46:01 +00:00
Eli Friedman
6b51ac6728 Canonicalize boolean +/- a constant to a select. 
(I think it's reasonably clear that we want to have a canonical form for 
constructs like this; if anyone thinks that a select is not the best 
canonical form, please tell me.)

llvm-svn: 75531
 2009-07-13 22:27:52 +00:00
Owen Anderson
3501454313 These don't really need contexts either. 
llvm-svn: 75528
 2009-07-13 22:18:28 +00:00
Dan Gohman
f6caa6f1e3 Make Loop and MachineLoop be subclasses of LoopBase, rather than typedefs, 
using the Curiously Recurring Template Pattern with LoopBase.

This will help further refactoring, and future functionality for
Loop. Also, Headers can now foward-declare Loop, instead of pulling
in LoopInfo.h or doing tricks.

llvm-svn: 75519
 2009-07-13 21:51:15 +00:00
Eli Friedman
b2a8c4ffc9 Misc simplifications to InstCombiner::commonIntCastTransforms. Most of 
the changes are allowed by not calling this function for bitcasts.  
The Instruction::AShr case is dead because 
SimplifyDemandedInstructionBits handles that case.

llvm-svn: 75514
 2009-07-13 21:45:57 +00:00
Eli Friedman
baf7e04afa Fix comment. 
llvm-svn: 75499
 2009-07-13 20:58:59 +00:00
Owen Anderson
1e5155161a Move more functionality over to LLVMContext. 
llvm-svn: 75497
 2009-07-13 20:58:05 +00:00
Eli Friedman
832f33550c Don't bother to call commonIntCastTransforms for bitcasts; int->int 
bitcasts will always be eliminated anyway.

llvm-svn: 75495
 2009-07-13 20:53:00 +00:00
Owen Anderson
393d8b0a0c Begin the painful process of tearing apart the rat'ss nest that is Constants.cpp and ConstantFold.cpp. 
This involves temporarily hard wiring some parts to use the global context.  This isn't ideal, but it's
the only way I could figure out to make this process vaguely incremental.

llvm-svn: 75445
 2009-07-13 04:09:18 +00:00
Eli Friedman
8c0118042a Remove check which is duplicated in 
InstCombiner::visitSelectInstWithICmp.

llvm-svn: 75409
 2009-07-12 02:00:05 +00:00
Chris Lattner
edf6f031d8 silence a vc++ warning. 
llvm-svn: 75393
 2009-07-11 22:31:59 +00:00
Torok Edwin
ae8a3ff177 assert(0) -> LLVM_UNREACHABLE. 
Make llvm_unreachable take an optional string, thus moving the cerr<< out of
line.
LLVM_UNREACHABLE is now a simple wrapper that makes the message go away for
NDEBUG builds.

llvm-svn: 75379
 2009-07-11 20:10:48 +00:00
Torok Edwin
9b41a5faf2 Convert more assert(0)+abort() -> LLVM_UNREACHABLE, 
and abort()/exit() -> llvm_report_error().

llvm-svn: 75363
 2009-07-11 13:10:19 +00:00