RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-02 00:42:52 +01:00
Code Issues Projects Releases Wiki Activity
56,051 Commits 4 Branches 5 Tags 704 MiB
7a3b1c5ffc
Commit Graph

1255 Commits

Author SHA1 Message Date
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
Daniel Dunbar
40ba5f6f58 Fix -Asserts warnings. 
llvm-svn: 79849
 2009-08-23 10:29:55 +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
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
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
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
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
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
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
Dan Gohman
9a6b2f19e5 Remove a bunch more now-unnecessary Context arguments. 
llvm-svn: 78809
 2009-08-12 16:23:25 +00:00
Dan Gohman
e3fa540e7a Remove unnecessary casts. 
llvm-svn: 78664
 2009-08-11 15:15:10 +00:00
Dan Gohman
1c41d60c4a Fix a bunch of namespace pollution. 
llvm-svn: 78363
 2009-08-07 01:32:21 +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
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
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
Owen Anderson
881d928f9b Move types back to the 2.5 API. 
llvm-svn: 77516
 2009-07-29 22:17:13 +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
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
Mike Stump
8902846c69 Fix a small little typo. 
llvm-svn: 77289
 2009-07-28 01:35:34 +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
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
038a7f0d35 Remove Value::{isName, getNameRef}. 
Also, change MDString to use a StringRef.

llvm-svn: 77098
 2009-07-25 23:55:21 +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
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
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
Ted Kremenek
60d0ab4838 Update CMake files. 
llvm-svn: 76595
 2009-07-21 17:43:20 +00:00
Chris Lattner
ffd009f039 add a fixme 
llvm-svn: 76324
 2009-07-18 18:49:04 +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
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
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
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
493855541b Update LoopSimplify and LoopUnswitch to use the new makeLoopInvariant 
function.

llvm-svn: 75584
 2009-07-14 01:37:59 +00:00
Owen Anderson
1e5155161a Move more functionality over to LLVMContext. 
llvm-svn: 75497
 2009-07-13 20:58:05 +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
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
Owen Anderson
7076f1ffb7 Push LLVMContext through the PatternMatch API. 
llvm-svn: 75255
 2009-07-10 17:35:01 +00:00
Owen Anderson
49226b1075 This started as a small change, I swear. Unfortunately, lots of things call the [I|F]CmpInst constructors. Who knew!? 
llvm-svn: 75200
 2009-07-09 23:48:35 +00:00
Nick Lewycky
c707d9c60d There's no need to consider PHI nodes in the same block as the instruction 
we're inserting sigma/phi functions for. Patch by Andre Tavares.

llvm-svn: 75138
 2009-07-09 15:59:27 +00:00
Nick Lewycky
02ee56adb2 Add some statistics to SSI so we can see what it's up to. 
Add an -ssi-everything pass which calls createSSI on everything in the function.

llvm-svn: 75135
 2009-07-09 15:33:14 +00:00
Owen Anderson
332aae685b Switch GlobalVariable ctors to a sane API, where *either* a context or a module is required. 
llvm-svn: 75025
 2009-07-08 19:03:57 +00:00
Owen Anderson
7a1f69e433 Push LLVMContext through GlobalVariables and IRBuilder. 
llvm-svn: 74985
 2009-07-08 01:26:06 +00:00
Owen Anderson
121f736d9c "LLVMContext* " --> "LLVMContext *" 
llvm-svn: 74878
 2009-07-06 23:00:19 +00:00
Owen Anderson
ad3229d281 Thread LLVMContext through the constant folding APIs, which touches a lot of files. 
llvm-svn: 74844
 2009-07-06 18:42:36 +00:00
Owen Anderson
977aa11bc6 More LLVMContext-ification. 
llvm-svn: 74807
 2009-07-05 22:41:43 +00:00
Mike Stump
78ecb66f56 Fix build. 
llvm-svn: 74782
 2009-07-03 22:11:58 +00:00
Nick Lewycky
b01a2dc7ba Add Static Single Information construction pass written by André Tavares! 
Use it by requiring it through the pass manager, then calling its createSSI
method on the variables that you want in SSI form.

llvm-svn: 74780
 2009-07-03 19:28:36 +00:00
Owen Anderson
81b8dabb53 Add a pointer to the owning LLVMContext to Module. This requires threading LLVMContext through a lot 
of the bitcode reader and ASM parser APIs, as well as supporting it in all of the tools.

Patches for Clang and LLVM-GCC to follow.

llvm-svn: 74614
 2009-07-01 16:58:40 +00:00
Chris Lattner
4bdaace06e improve the APIs for creating struct and function types with no arguments/elements 
to not have to create a temporary vector (in the API at least).  Patch by Jay Foad!

llvm-svn: 74584
 2009-07-01 04:13:31 +00:00
Dan Gohman
49c397bf4b Minor code simplification. 
llvm-svn: 74491
 2009-06-30 01:24:43 +00:00
Dan Gohman
fcd5eedead Remove the block from the LoopInfo, rather than just the Loop. 
LoopInfo will handle removing it from the Loop, as well as updating
its own tables.

llvm-svn: 74398
 2009-06-27 22:32:36 +00:00
Dan Gohman
8d2a45fadb Teach LoopSimplify how to merge multiple loop exits into a single exit, 
when one of them can be converted to a trivial icmp and conditional
branch.

This addresses what is essentially a phase ordering problem.
SimplifyCFG knows how to do this transformation, but it doesn't do so
if the primary block has any instructions in it other than an icmp and
a branch. In the given testcase, the block contains other instructions,
however they are loop-invariant and can be hoisted. SimplifyCFG doesn't
have LoopInfo though, so it can't hoist them. And, it's important that
the blocks be merged before LoopRotation, as it doesn't support
multiple-exit loops.

llvm-svn: 74396
 2009-06-27 21:30:38 +00:00
Devang Patel
4f5d296df0 Remove unused routines. 
llvm-svn: 74351
 2009-06-26 22:53:22 +00:00
Douglas Gregor
6d9b0e8c19 Fix linking of llvm-ld and lli with CMake, from Xerxes Rånby 
llvm-svn: 74285
 2009-06-26 15:37:00 +00:00
Dan Gohman
ba8760719f Fix LCSSA to avoid emitting a PHI node for the unwind destination of 
an invoke instruction, since the value isn't really live across that
edge.

llvm-svn: 74242
 2009-06-26 00:31:13 +00:00
Chris Lattner
574c5de9f8 Generalize instcombine's isSafeToLoadUnconditionally() function 
to ignore readonly calls, and factor it out of instcombine so
that it can be used by other passes.  Patch by Frits van Bommel!

llvm-svn: 73506
 2009-06-16 17:23:12 +00:00
Dale Johannesen
2d0be306fb Fix the crash in this test. This is basically the same 
problem addressed in 31284, but the patch there only
addressed the case where an invoke is the first thing in
a block.

llvm-svn: 73416
 2009-06-15 20:59:27 +00:00
Dan Gohman
111f127d23 Fix old-style type names in comments. 
llvm-svn: 73362
 2009-06-14 23:30:43 +00:00
Dan Gohman
5f6f8101d5 Split the Add, Sub, and Mul instruction opcodes into separate 
integer and floating-point opcodes, introducing
FAdd, FSub, and FMul.

For now, the AsmParser, BitcodeReader, and IRBuilder all preserve
backwards compatability, and the Core LLVM APIs preserve backwards
compatibility for IR producers. Most front-ends won't need to change
immediately.

This implements the first step of the plan outlined here:
http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt

llvm-svn: 72897
 2009-06-04 22:49:04 +00:00
Nick Lewycky
a9de2f1c81 Give embedded metadata its own type instead of relying on EmptyStructTy. 
llvm-svn: 72610
 2009-05-30 05:06:04 +00:00
Torok Edwin
beb86bd0b4 available_externall linkage is not local, this was confusing the codegenerator, 
and it wasn't generating calls through @PLT for these functions.
hasLocalLinkage() is now false for available_externally,
I attempted to fix the inliner and dce to handle available_externally properly.
It passed make check.

llvm-svn: 72328
 2009-05-23 14:06:57 +00:00
Dan Gohman
922033d119 Teach SCEVExpander to expand arithmetic involving pointers into GEP 
instructions. It attempts to create high-level multi-operand GEPs,
though in cases where this isn't possible it falls back to casting
the pointer to i8* and emitting a GEP with that. Using GEP instructions
instead of ptrtoint+arithmetic+inttoptr helps pointer analyses that
don't use ScalarEvolution, such as BasicAliasAnalysis.

Also, make the AddrModeMatcher more aggressive in handling GEPs.
Previously it assumed that operand 0 of a GEP would require a register
in almost all cases. It now does extra checking and can do more
matching if operand 0 of the GEP is foldable. This fixes a problem
that was exposed by SCEVExpander using GEPs.

llvm-svn: 72093
 2009-05-19 02:15:55 +00:00
Dale Johannesen
8bd6fc810a Reuse existing getUnderlyingObject instead of 
adding another copy.

llvm-svn: 71783
 2009-05-14 18:41:18 +00:00
Dale Johannesen
d0e1e29fb7 Handle some additonal cases of external weak globals. 
llvm-svn: 71717
 2009-05-13 20:55:30 +00:00
Dale Johannesen
a3b4fb31a1 Don't generate a select whose operand is load of a weak 
external.  These may have address 0 and are not safe
to execute unconditionally.

llvm-svn: 71688
 2009-05-13 18:25:07 +00:00
Duncan Sands
f7af13b2d4 Rename PaddedSize to AllocSize, in the hope that this 
will make it more obvious what it represents, and stop
it being confused with the StoreSize.

llvm-svn: 71349
 2009-05-09 07:06:46 +00:00
Eli Friedman
a280375b23 PR4123: don't crash when inlining a call which uses its own result. 
llvm-svn: 71199
 2009-05-08 00:22:04 +00:00
Dan Gohman
33e1f0fcb5 Simplify code by using SmallVector's pop_back_val() instead of 
separate back() and pop_back() calls.

llvm-svn: 71089
 2009-05-06 17:22:41 +00:00
Duncan Sands
880eaf5278 Allow readonly functions to unwind exceptions. Teach 
the optimizers about this.  For example, a readonly
function with no uses cannot be removed unless it is
also marked nounwind.

llvm-svn: 71071
 2009-05-06 06:49:50 +00:00
Dan Gohman
00c4ac3add Re-apply 70645, converting ScalarEvolution to use 
CallbackVH, with fixes. allUsesReplacedWith need to
walk the def-use chains and invalidate all users of a
value that is replaced. SCEVs of users need to be
recalcualted even if the new value is equivalent. Also,
make forgetLoopPHIs walk def-use chains, since any
SCEV that depends on a PHI should be recalculated when
more information about that PHI becomes available.

llvm-svn: 70927
 2009-05-04 22:30:44 +00:00
Chris Lattner
b07d558841 Factor loop backedge finding out of CodeGenPrepare into a new 
FindFunctionBackedges function.

llvm-svn: 70819
 2009-05-04 02:25:58 +00:00
Dan Gohman
8e4b9e586b Revert r70645 for now; it's causing a variety of regressions. 
llvm-svn: 70661
 2009-05-03 05:46:20 +00:00
Dan Gohman
7d98736ca6 Convert ScalarEvolution to use CallbackVH for its internal map. This 
makes ScalarEvolution::deleteValueFromRecords, and it's code that
subtly needed to be called before ReplaceAllUsesWith, unnecessary.

It also makes ValueDeletionListener unnecessary.

llvm-svn: 70645
 2009-05-02 21:19:20 +00:00
Dan Gohman
a79cce4aef Previously, RecursivelyDeleteDeadInstructions provided an option 
of returning a list of pointers to Values that are deleted. This was
unsafe, because the pointers in the list are, by nature of what
RecursivelyDeleteDeadInstructions does, always dangling. Replace this
with a simple callback mechanism. This may eventually be removed if
all clients can reasonably be expected to use CallbackVH.

Use this to factor out the dead-phi-cycle-elimination code from LSR
utility function, and generalize it to use the
RecursivelyDeleteTriviallyDeadInstructions utility function.

This makes LSR more aggressive about eliminating dead PHI cycles;
adjust tests to either be less trivial or to simply expect fewer
instructions.

llvm-svn: 70636
 2009-05-02 18:29:22 +00:00
Owen Anderson
309568c469 Real fix for PR3549, by using caching for predecessor counts in addition to the predecessors themselves. This halves the time 
to optimize the testcase, beyond what my previous patch did.

llvm-svn: 69792
 2009-04-22 08:50:12 +00:00
Owen Anderson
b36babc111 Use PredIteratorCache in LCSSA, which gives a 37% overall speedup on the testcase from PR3549. More improvements to come. 
llvm-svn: 69788
 2009-04-22 08:09:13 +00:00
Chris Lattner
60c88b66da use predicate instead of hand-rolled loop 
llvm-svn: 69752
 2009-04-21 23:37:18 +00:00
Jim Grosbach
da399d8358 remove trailing whitespace 
llvm-svn: 69402
 2009-04-17 23:30:55 +00:00
Eli Friedman
13e59b3c41 Fix for PR3944: make mem2reg O(N) instead of O(N^2) in the number of 
incoming edges for a block with many predecessors.

llvm-svn: 69312
 2009-04-16 21:40:28 +00:00
Devang Patel
7323064183 While inlining, clone llvm.dbg.func.start intrinsic and adjust 
llvm.dbg.region.end instrinsic. This nested llvm.dbg.func.start/llvm.dbg.region.end pair now enables DW_TAG_inlined_subroutine support in code generator.

llvm-svn: 69118
 2009-04-15 00:17:06 +00:00
Devang Patel
7fa69ef109 Update call graph after inlining invoke. 
Patch by Jay Foad.

llvm-svn: 68120
 2009-03-31 17:36:12 +00:00
Dan Gohman
18daca0895 Now that errs() is properly non-buffered, there's no need to 
explicitly flush it.

llvm-svn: 67526
 2009-03-23 15:57:19 +00:00
Duncan Sands
3c115770e7 Factorize out a concept - no functionality change. 
llvm-svn: 67454
 2009-03-21 21:27:31 +00:00
Duncan Sands
926d062a48 Don't load values out of global constants with weak 
linkage: the value may be replaced with something
different at link time.  (Frontends that want to
allow values to be loaded out of weak constants can
give their constants weak_odr linkage).

llvm-svn: 67407
 2009-03-20 21:53:29 +00:00
Dale Johannesen
1d76ebc9ed Fix comment typo. 
llvm-svn: 67307
 2009-03-19 17:23:29 +00:00
Zhou Sheng
fd26fc58bd Revert my previous change on Local.cpp, instead, fix the bug on scalarrepl. 
If the instruction has no users, it is also not only used by debug info 
and should not be deleted.

llvm-svn: 67194
 2009-03-18 10:13:08 +00:00
Zhou Sheng
90fc23d03d Fix a bug. 
If I->use_empty(), this method should return false.

llvm-svn: 67180
 2009-03-18 07:56:13 +00:00
Bill Wendling
96e37540a0 Revert r66920. It was causing failures in the self-hosting buildbot (in release 
mode).

Running /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/dg.exp ...
FAIL: /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/crash-narrowfunctiontest.ll
Failed with signal(SIGBUS) at line 1
while running: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/crash-narrowfunctiontest.ll -bugpoint-crashcalls -silence-passes > /dev/null
0   bugpoint          0x0035dd25 llvm::sys::SetInterruptFunction(void (*)()) + 85
1   bugpoint          0x0035e382 llvm::sys::RemoveFileOnSignal(llvm::sys::Path const&, std::string*) + 706
2   libSystem.B.dylib 0x92f112bb _sigtramp + 43
3   libSystem.B.dylib 0xffffffff _sigtramp + 1829694831
4   bugpoint          0x00021d1c main + 92
5   bugpoint          0x00002106 start + 54
6   bugpoint          0x00000004 start + 18446744073709543220
Stack dump:
0.    Program arguments: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/crash-narrowfunctiontest.ll -bugpoint-crashcalls -silence-passes 

FAIL: /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/misopt-basictest.ll
Failed with signal(SIGBUS) at line 1
while running: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/misopt-basictest.ll -dce -bugpoint-deletecalls -simplifycfg -silence-passes
0   bugpoint          0x0035dd25 llvm::sys::SetInterruptFunction(void (*)()) + 85
1   bugpoint          0x0035e382 llvm::sys::RemoveFileOnSignal(llvm::sys::Path const&, std::string*) + 706
2   libSystem.B.dylib 0x92f112bb _sigtramp + 43
3   libSystem.B.dylib 0xffffffff _sigtramp + 1829694831
4   bugpoint          0x00021d1c main + 92
5   bugpoint          0x00002106 start + 54
6   bugpoint          0x00000006 start + 18446744073709543222
Stack dump:
0.    Program arguments: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/misopt-basictest.ll -dce -bugpoint-deletecalls -simplifycfg -silence-passes 

FAIL: /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/remove_arguments_test.ll
Failed with signal(SIGBUS) at line 1
while running: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/remove_arguments_test.ll  -bugpoint-crashcalls -silence-passes
0   bugpoint          0x0035dd25 llvm::sys::SetInterruptFunction(void (*)()) + 85
1   bugpoint          0x0035e382 llvm::sys::RemoveFileOnSignal(llvm::sys::Path const&, std::string*) + 706
2   libSystem.B.dylib 0x92f112bb _sigtramp + 43
3   libSystem.B.dylib 0xffffffff _sigtramp + 1829694831
4   bugpoint          0x00021d1c main + 92
5   bugpoint          0x00002106 start + 54
Stack dump:
0.    Program arguments: bugpoint /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/test/BugPoint/remove_arguments_test.ll -bugpoint-crashcalls -silence-passes 

--- Reverse-merging (from foreign repository) r66920 into '.':
U    include/llvm/Support/CallSite.h
U    include/llvm/Instructions.h
U    lib/Analysis/IPA/GlobalsModRef.cpp
U    lib/Analysis/IPA/Andersens.cpp
U    lib/Bitcode/Writer/BitcodeWriter.cpp
U    lib/VMCore/Instructions.cpp
U    lib/VMCore/Verifier.cpp
U    lib/VMCore/AsmWriter.cpp
U    lib/Transforms/Utils/LowerInvoke.cpp
U    lib/Transforms/Scalar/SimplifyCFGPass.cpp
U    lib/Transforms/IPO/PruneEH.cpp
U    lib/Transforms/IPO/DeadArgumentElimination.cpp

llvm-svn: 66953
 2009-03-13 21:15:59 +00:00
Gabor Greif
6a76677e1b Second installment of "BasicBlock operands to the back" 
changes.

For InvokeInst now all arguments begin at op_begin().
The Callee, Cont and Fail are now faster to get by
access relative to op_end().

This patch introduces some temporary uglyness in CallSite.
Next I'll bring CallInst up to a similar scheme and then
the uglyness will magically vanish.

This patch also exposes all the reliance of the libraries
on InvokeInst's operand ordering. I am thinking of taking
care of that too.

llvm-svn: 66920
 2009-03-13 18:27:29 +00:00
Dale Johannesen
3edb15a6c7 Fix one more place where debug info affected 
codegen (speculative execution).

llvm-svn: 66859
 2009-03-13 01:05:24 +00:00
Dale Johannesen
67278f57e8 Previous debug info fix to this code wasn't quite 
right; did the wrong thing when there are exactly 11
non-debug instructions, followed by debug info.
Remove a FIXME since it's apparently been fixed along the way.

llvm-svn: 66840
 2009-03-12 23:18:09 +00:00
Dale Johannesen
d9b24eba60 There already was a class to force deterministic 
sorting of ConstantInt's; unreinvent wheel.

llvm-svn: 66824
 2009-03-12 21:01:11 +00:00
Dale Johannesen
78eadcb3dc Another missing check for debug intrinsics. 
llvm-svn: 66800
 2009-03-12 17:42:45 +00:00
Dale Johannesen
6a856e8183 Allow for switch values bigger than 64 bits. 
llvm-svn: 66751
 2009-03-12 01:20:06 +00:00
Dale Johannesen
a63033a34c Fix some nondeterministic behavior when forwarding 
from a switch table.  Multiple table entries that
branch to the same place were being sorted by the
pointer value of the ConstantInt*; changed to sort
by the actual value of the ConstantInt.

llvm-svn: 66749
 2009-03-12 01:00:26 +00:00
Dale Johannesen
7579673822 Don't consider debug intrinsics when checking 
whether a callee to be inlined is a leaf.

llvm-svn: 66588
 2009-03-10 22:20:02 +00:00
Devang Patel
eedb8ab91a Ignore dbg info, while estimating size of jump through block. 
llvm-svn: 66554
 2009-03-10 18:00:05 +00:00
Evan Cheng
c147115cdf If a function is marked alwaysinline, it must be inlined (possibly for correctness). Do so even if the callee has dynamic alloca and the caller doesn't. 
llvm-svn: 66539
 2009-03-10 07:57:50 +00:00
Duncan Sands
5ab54d488f Introduce new linkage types linkonce_odr, weak_odr, common_odr 
and extern_weak_odr.  These are the same as the non-odr versions,
except that they indicate that the global will only be overridden
by an *equivalent* global.  In C, a function with weak linkage can
be overridden by a function which behaves completely differently.
This means that IP passes have to skip weak functions, since any
deductions made from the function definition might be wrong, since
the definition could be replaced by something completely different
at link time.   This is not allowed in C++, thanks to the ODR
(One-Definition-Rule): if a function is replaced by another at
link-time, then the new function must be the same as the original
function.  If a language knows that a function or other global can
only be overridden by an equivalent global, it can give it the
weak_odr linkage type, and the optimizers will understand that it
is alright to make deductions based on the function body.  The
code generators on the other hand map weak and weak_odr linkage
to the same thing.

llvm-svn: 66339
 2009-03-07 15:45:40 +00:00
Dale Johannesen
0643e4e36c Fix another case where debug info interferes with 
an optimization.

llvm-svn: 66288
 2009-03-06 21:08:33 +00:00
Devang Patel
3ae9d5d375 While hoisting instruction to speculatively execute simple bb, ignore dbg intrinsics. 
llvm-svn: 66255
 2009-03-06 06:00:17 +00:00
Dale Johannesen
83c13c2ace Tweak the check for promotable alloca's to handle 
debug intrinsics correctly.

llvm-svn: 66225
 2009-03-06 00:42:50 +00:00
Devang Patel
28a28a2588 Add "check/remove dbg var" helper routines. 
llvm-svn: 66223
 2009-03-06 00:19:37 +00:00
Dale Johannesen
8ca4d24371 Revert unintended commmit. 
llvm-svn: 66001
 2009-03-04 02:09:48 +00:00
Dale Johannesen
c6bfdb8253 Skip ptr-to-ptr bitcasts when counting in another case. 
llvm-svn: 66000
 2009-03-04 02:06:53 +00:00
Dale Johannesen
e184480072 Always skip ptr-to-ptr bitcasts when counting, 
per Chris' suggestion.  Slightly faster.

llvm-svn: 65999
 2009-03-04 01:53:05 +00:00
Dale Johannesen
e611f70764 Marking debug info intrinsics as not touching memory 
caused them to be considered trivially dead.  Fix this.

llvm-svn: 65979
 2009-03-03 23:30:00 +00:00
Dale Johannesen
81b6cd8ce5 Instruction counters must skip the bitcasts that 
feed into llvm.dbg.declare nodes, as well as
the debug directives themselves.

llvm-svn: 65976
 2009-03-03 22:36:47 +00:00
Dale Johannesen
ceed180d4c When removing a store to an alloca that has only one 
use, check also for the case where it has two uses,
the other being a llvm.dbg.declare.  This is needed so
debug info doesn't affect codegen.

llvm-svn: 65970
 2009-03-03 21:26:39 +00:00
Bill Wendling
7fdda71ad7 Remove accidental check-ins in r65960. :-( 
llvm-svn: 65961
 2009-03-03 19:25:16 +00:00
Bill Wendling
8244b700bf Use > instead of >=. We want to promote aggregates of 128-bytes. 
llvm-svn: 65960
 2009-03-03 19:18:49 +00:00
Dan Gohman
51d4e8db6a Fix a bunch of Doxygen syntax issues. Escape special characters, 
and put @file directives on their own comment line.

llvm-svn: 65920
 2009-03-03 02:55:14 +00:00
Dale Johannesen
33fa9dc8a9 When sinking an insn in InstCombine bring its debug 
info with it.
Don't count debug info insns against the scan maximum
in FindAvailableLoadedValue (lest they affect codegen).

llvm-svn: 65910
 2009-03-03 01:09:07 +00:00
Nick Lewycky
f5563f28d3 Fix compiler warning about uninitialized variables. No functional change. 
llvm-svn: 65620
 2009-02-27 06:29:31 +00:00
Zhou Sheng
670d50e102 Ignore dbg info intrinsics when folding conditional branch to 
conditional branch predecessors.

llvm-svn: 65509
 2009-02-26 06:56:37 +00:00
Zhou Sheng
241d74737b Don't block basic block with only SwitchInst to fold into predecessors. 
llvm-svn: 65456
 2009-02-25 15:34:27 +00:00
Devang Patel
702836b2dd While folding unconditional return move DbgRegionEndInst into the predecessor, instead of removing it. This fixes following tests from llvmgcc42 testsuite. 
gcc.c-torture/execute/20000605-3.c
gcc.c-torture/execute/20020619-1.c
gcc.c-torture/execute/20030920-1.c
gcc.c-torture/execute/loop-ivopts-1.c

llvm-svn: 65353
 2009-02-24 00:05:16 +00:00
Mon P Wang
75d957dba4 Changed option name from inline-threshold to basic-inline-threshold because 
inline-threshold option is used by the inliner.

llvm-svn: 65309
 2009-02-23 07:07:56 +00:00
Evan Cheng
74d0dda00f Add AddrModeMatcher.cpp 
llvm-svn: 65228
 2009-02-21 07:05:11 +00:00
Evan Cheng
d8aad94754 Factor address mode matcher out of codegen prepare to make it available to other passes, e.g. loop strength reduction. 
llvm-svn: 65134
 2009-02-20 18:24:38 +00:00
Zhou Sheng
0c2e862ad0 Just roll back the previous change to -mem2reg. 
Will re-think about this according to Chris's comments.

llvm-svn: 65126
 2009-02-20 17:49:33 +00:00
Zhou Sheng
580c176f47 patch to update the line number information in pass -mem2reg. 
Currently this pass will delete the variable declaration info, 
and keep the line number info. But the kept line number info is not updated, 
and some is redundant or not correct, this patch just updates those info.

llvm-svn: 65123
 2009-02-20 16:31:35 +00:00
Nick Lewycky
6feb7523b8 Fix typo caused by too much surfing, dudes... 
llvm-svn: 64626
 2009-02-16 04:26:53 +00:00
Chris Lattner
5babade39e Fix a nasty bug (PR3550) where the inline pass could incorrectly mark 
calls with the tail marker when inlining them through an invoke.  Patch,
testcase, and perfect analysis by Jay Foad!

llvm-svn: 64364
 2009-02-12 07:06:42 +00:00
Devang Patel
dd611eac76 If llvm.dbg.region.end is disappearing then remove corresponding llvm.dbg.func.start also. 
llvm-svn: 64278
 2009-02-11 01:29:06 +00:00
Devang Patel
60571be0de Ignore dbg intrinsic while folding unconditional branch. 
llvm-svn: 64242
 2009-02-10 22:14:17 +00:00
Devang Patel
6c041de2ff Do not clone llvm.dbg.func.start and corresponding llvm.dbg.region.end during inlining. 
llvm-svn: 64209
 2009-02-10 07:48:18 +00:00
Devang Patel
7377e7aa89 Enable scalar replacement of AllocaInst whose one of the user is dbg info. 
llvm-svn: 64207
 2009-02-10 07:00:59 +00:00
Devang Patel
72f5fba371 Revert rev. 63876. It is causing llvm-gcc bootstrap failure. 
llvm-svn: 63888
 2009-02-05 21:46:41 +00:00
Devang Patel
66eee02024 Ignore dbg intrinsics while propagating conditional expression info. 
llvm-svn: 63876
 2009-02-05 19:15:39 +00:00
Devang Patel
e665f78460 Ignore dbg intrinsics while folding switch instruction. 
llvm-svn: 63802
 2009-02-05 00:30:42 +00:00
Devang Patel
10be164b28 Ignore dbg intrinsics. 
llvm-svn: 63781
 2009-02-04 21:39:48 +00:00
Devang Patel
2fac28a8c7 While folding vallue comparison terminators ignore dbg intrinsics. 
llvm-svn: 63700
 2009-02-04 01:06:11 +00:00
Devang Patel
bc5a1a7007 Ignore dbg intrinsics while hoisting common code in the two blocks up into the branch block. 
llvm-svn: 63687
 2009-02-04 00:03:08 +00:00
Devang Patel
4b56b3c66e Do not let dbg intrinsic block folding of two entry phi node. 
llvm-svn: 63671
 2009-02-03 22:12:02 +00:00
Nick Lewycky
a676cf98e3 Revert r63600. It didn't fix the bug, it just moved it a bit. 
llvm-svn: 63618
 2009-02-03 06:30:37 +00:00
Nick Lewycky
cd8353b6fe Update the callgraph when replacing InvokeInst with CallInst when inlining. 
llvm-svn: 63600
 2009-02-03 04:34:40 +00:00
Gabor Greif
690930270b use precise getters 
llvm-svn: 63402
 2009-01-30 18:21:13 +00:00
Duncan Sands
aee16d4916 Rename getAnalysisToUpdate to getAnalysisIfAvailable. 
llvm-svn: 63198
 2009-01-28 13:14:17 +00:00
Dale Johannesen
b818fa1bd3 Revert previous change; even this mild and clearly 
more accurate change loses more than it gains on
benchmarks.

llvm-svn: 62938
 2009-01-24 21:49:34 +00:00
Dale Johannesen
1867040e00 Improve the inlining cost function a bit. 
Little practical effect.

llvm-svn: 62908
 2009-01-24 01:27:33 +00:00
Gabor Greif
fbd40904c1 Simplify the logic of getting hold of a PHI predecessor block. 
There is now a direct way from value-use-iterator to incoming block in PHINode's API.
This way we avoid the iterator->index->iterator trip, and especially the costly
getOperandNo() invocation. Additionally there is now an assertion that the iterator
really refers to one of the PHI's Uses.

llvm-svn: 62869
 2009-01-23 19:40:15 +00:00
Chris Lattner
6ade48fcaa another fix for PR3354 
llvm-svn: 62561
 2009-01-20 01:15:41 +00:00
Bill Wendling
5281f4fb64 Doxygen-ify comments. 
llvm-svn: 62546
 2009-01-19 23:43:56 +00:00
Chris Lattner
e8fa6f2468 Fix a problem exposed by PR3354: simplifycfg was making a potentially 
trapping instruction be executed unconditionally.

llvm-svn: 62541
 2009-01-19 23:03:13 +00:00
Bill Wendling
bf83203ae6 Temporarily revert r62487. It's causing this error during a release bootstrap of 
llvm-gcc. Most likely, it's miscompiling one of the "gen*" programs:

/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./prev-gcc/xgcc -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./prev-gcc/ -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.6.0/bin/ -c -g -O2 -mdynamic-no-pic -DIN_GCC -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -mdynamic-no-pic -DHAVE_CONFIG_H -DGENERATOR_FILE -I. -Ibuild -I../../llvm-gcc.src/gcc -I../../llvm-gcc.src/gcc/build -I../../llvm-gcc.src/gcc/../include -I./../intl -I../../llvm-gcc.src/gcc/../libcpp/include  -I../../llvm-gcc.src/gcc/../libdecnumber -I../libdecnumber -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/include -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/include -DENABLE_LLVM -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/../llvm.src/include  -D_DEBUG  -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS   -o build/gencondmd.o build/gencondmd.c
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: error: expected '}' before ')' token
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: warning: excess elements in struct initializer
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: warning: (near initialization for 'insn_conditions[4]')
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: error: expected '}' before ')' token
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: error: expected ',' or ';' before ')' token
../../llvm-gcc.src/gcc/config/i386/mmx.md:927: error: expected identifier or '(' before ',' token
../../llvm-gcc.src/gcc/config/i386/sse.md:3458: error: expected identifier or '(' before ',' token
...

llvm-svn: 62506
 2009-01-19 08:46:20 +00:00
Chris Lattner
bb76cc9447 Fix PR3016, a bug which can occur do to an invalid assumption: 
we assumed a CFG structure that would be valid when all code in 
the function is reachable, but not all code is necessarily 
reachable.  Do a simple, but horrible, CFG walk to check for this
case.

llvm-svn: 62487
 2009-01-19 02:46:28 +00:00
Chris Lattner
af6f58bbf4 reduce indentation by using 'continue', no functionality change. 
llvm-svn: 62477
 2009-01-19 02:07:32 +00:00
Chris Lattner
c03b442e54 Fix some problems in SpeculativelyExecuteBB. Basically, 
because of dead code, a phi could use the speculated instruction
that was not in "BB2".  Make this check explicit and tighten up 
some other corners.  This fixes PR3292.  No testcase becauase this
depends entirely on visitation order of blocks and requires a 
sequence of 8 passes to repro.

llvm-svn: 62476
 2009-01-19 00:36:37 +00:00
Chris Lattner
ead19aaccb Make this a bit more explicit about which cases need the 
check.  No functionality change.

llvm-svn: 62474
 2009-01-18 23:22:07 +00:00
Gabor Greif
20f36c51bd introduce typedef for complicated vector, and use it too 
llvm-svn: 62384
 2009-01-17 00:09:08 +00:00
Gabor Greif
0d0908d06a typo 
llvm-svn: 62377
 2009-01-16 23:08:50 +00:00
Rafael Espindola
0aba6c9435 Add the private linkage. 
llvm-svn: 62279
 2009-01-15 20:18:42 +00:00
Gabor Greif
b1f92de36f avoid using iterators when they get invalidated potentially 
this fixes PR3332

llvm-svn: 62271
 2009-01-15 18:40:09 +00:00
Dale Johannesen
e458c47a74 Fix testsuite regressions from recursive inlining. 
llvm-svn: 62189
 2009-01-13 22:43:37 +00:00
Dale Johannesen
12bb54e183 Enable recursive inlining. Reduce inlining threshold 
back to 200; 400 seems to be too high, loses more than
it gains.

llvm-svn: 62107
 2009-01-12 22:11:50 +00:00
Duncan Sands
bcdbfb63dc Rename getABITypeSize to getTypePaddedSize, as 
suggested by Chris.

llvm-svn: 62099
 2009-01-12 20:38:59 +00:00
Misha Brukman
71c7e40966 Removed trailing whitespace from Makefiles. 
llvm-svn: 61991
 2009-01-09 16:44:42 +00:00
Dale Johannesen
eb1316a896 Adjustments to last patch based on review. 
llvm-svn: 61969
 2009-01-09 01:30:11 +00:00
Dale Johannesen
4c25cb12ea Do not inline functions with (dynamic) alloca into 
functions that don't already have a (dynamic) alloca.
Dynamic allocas cause inefficient codegen and we shouldn't
propagate this (behavior follows gcc).  Two existing tests
assumed such inlining would be done; they are hacked by
adding an alloca in the caller, preserving the point of
the tests.

llvm-svn: 61946
 2009-01-08 21:45:23 +00:00
Dan Gohman
8271066844 Tidy up #includes, deleting a bunch of unnecessary #includes. 
llvm-svn: 61715
 2009-01-05 17:59:02 +00:00
Chris Lattner
6ecf1b2bb1 Fix PR2929 by making bugpoint/code extract propagate the nothrow 
bit from the original function to the cloned one.

llvm-svn: 61194
 2008-12-18 05:52:56 +00:00
Chris Lattner
005d68a2a9 make instnamer name unnamed blocks as well as instructions and args. 
llvm-svn: 61175
 2008-12-18 00:33:11 +00:00
Eli Friedman
de614f9842 Add a helper to remove a branch and DCE the condition, and use it 
consistently for deleting branches.  In addition to being slightly 
more readable, this makes SimplifyCFG a bit better 
about cleaning up after itself when it makes conditions unused.

llvm-svn: 61100
 2008-12-16 20:54:32 +00:00
Misha Brukman
5e6eec9337 Fix spelling. 
llvm-svn: 60971
 2008-12-13 05:21:37 +00:00
Chris Lattner
a79a341f1e fix a bug I introduced in simplifycfg handling single entry phi 
nodes. FoldSingleEntryPHINodes deletes the PHI, so there is no
need to delete it afterward.

llvm-svn: 60653
 2008-12-07 07:22:45 +00:00
Chris Lattner
420385f8c3 Factor some code into a new FoldSingleEntryPHINodes method. 
llvm-svn: 60501
 2008-12-03 19:44:02 +00:00
Chris Lattner
29326a6d1f third time is the charm. 
llvm-svn: 60469
 2008-12-03 07:45:15 +00:00
Chris Lattner
d03c1b5440 fix assertion. 
llvm-svn: 60468
 2008-12-03 07:43:05 +00:00
Chris Lattner
7a00825f57 Rename DeleteBlockIfDead to DeleteDeadBlock and make it 
unconditionally delete the block.  All likely clients will
do the checking anyway.

llvm-svn: 60464
 2008-12-03 06:40:52 +00:00
Chris Lattner
12c3938837 Factor some code out of SimplifyCFG, forming a new 
DeleteBlockIfDead method.

llvm-svn: 60463
 2008-12-03 06:37:44 +00:00
Chris Lattner
1b70ed5140 rewrite RecursivelyDeleteTriviallyDeadInstructions to use a more efficient 
formulation that doesn't require set lookups or scanning a set.

llvm-svn: 60203
 2008-11-28 01:20:46 +00:00
Chris Lattner
b9af105cff remove some weirdness that came from the LSR code that has 
nothing to do with dead instruction elimination.  No tests in
dejagnu depend on this, so I don't know what it was needed for.

llvm-svn: 60202
 2008-11-28 00:58:15 +00:00
Chris Lattner
4486266c9d delete ErasePossiblyDeadInstructionTree, replacing uses of it with 
RecursivelyDeleteTriviallyDeadInstructions.

llvm-svn: 60196
 2008-11-27 23:25:44 +00:00
Chris Lattner
53ebef9cbb enhance RecursivelyDeleteTriviallyDeadInstructions to make 
PHIs dead if they are single-value.

llvm-svn: 60194
 2008-11-27 23:18:11 +00:00
Chris Lattner
8b382de4e0 Enhance RecursivelyDeleteTriviallyDeadInstructions to optionally 
return a list of deleted instructions.

llvm-svn: 60193
 2008-11-27 23:14:34 +00:00
Chris Lattner
b374a0158a remove doConstantPropagation and dceInstruction, they are just 
wrappers around the interesting code and use an obscure iterator
abstraction that dates back many many years.

Move EraseDeadInstructions to Transforms/Utils and name it
RecursivelyDeleteTriviallyDeadInstructions.

llvm-svn: 60191
 2008-11-27 22:57:53 +00:00
Chris Lattner
2959f6224e switch InstCombine::visitLoadInst to use 
FindAvailableLoadedValue

llvm-svn: 60169
 2008-11-27 08:56:30 +00:00