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Author SHA1 Message Date
Devang Patel
960d6ae6d1 Check empty dominance frontier. 
llvm-svn: 52437
 2008-06-18 02:12:09 +00:00
Dan Gohman
c190d65454 Auto-upgrade code for multiple-value return statements. This code 
isn't actually called yet.

llvm-svn: 52435
 2008-06-17 23:38:43 +00:00
Dan Gohman
d9d529d7ed In InsertValueInst's copy ctor, actually copy the operands. 
llvm-svn: 52434
 2008-06-17 23:25:49 +00:00
Owen Anderson
c1ac0c1c41 We don't want to find dependencies within the same block in this case. It leads to incorrect results because 
we're detecting something at or after the call we're querying on.

llvm-svn: 52433
 2008-06-17 22:27:06 +00:00
Dan Gohman
24d9c8400f Implement the ExtractValueInst::getIndexedType that accepts one 
index value.

llvm-svn: 52432
 2008-06-17 21:07:55 +00:00
Evan Cheng
10ead77866 Live-through live interval is [mbb start, mbb end+1]. 
llvm-svn: 52431
 2008-06-17 20:13:36 +00:00
Evan Cheng
3dc2cfe366 When extending a liveinterval by commuting, don't throw away the live ranges that are not affected. 
llvm-svn: 52430
 2008-06-17 20:11:16 +00:00
Ted Kremenek
a9f1f1db52 Consistently set "Buckets[NumBuckets] = reinterpret_cast<void*>(-1)" throughout FoldingSet.cpp. 
llvm-svn: 52425
 2008-06-17 19:12:43 +00:00
Owen Anderson
79605db969 Add an insertBefore method for attaching previously unattached instructions, 
such as those created by clone(), to a basic block.

llvm-svn: 52424
 2008-06-17 18:29:27 +00:00
Owen Anderson
609a53ac86 Fix use of placement new to actually use an address. 
llvm-svn: 52423
 2008-06-17 18:07:43 +00:00
Evan Cheng
acd28b95da It's not safe to remove SUBREG_TO_REG that looks like identity copies, e.g. movl %eax, %eax on x86-64 actually does a zero-extend. 
llvm-svn: 52421
 2008-06-17 17:59:16 +00:00
Anton Korobeynikov
6a779ad6fa Add one more 'magic' define :) 
llvm-svn: 52420
 2008-06-17 17:57:43 +00:00
Anton Korobeynikov
cdfbb1eae5 Unbreak non-PPC builds 
llvm-svn: 52419
 2008-06-17 17:38:31 +00:00
Anton Korobeynikov
5b04f6d658 Provide generic hooks for icache invalidation. Add PPC implementation. 
Patch by Gary Benson!

llvm-svn: 52418
 2008-06-17 17:30:05 +00:00
Chris Lattner
4be2e72cc5 revert recent patch which is causing widespread breakage. 
llvm-svn: 52415
 2008-06-17 17:06:43 +00:00
Evan Cheng
d43a533365 Don't forget to initialize SymbolSearchingDisabled. 
llvm-svn: 52414
 2008-06-17 16:49:02 +00:00
Duncan Sands
ec220a7c48 Fix typo that changed the logic to something wrong. 
Spotted by Nick Lewycky.

llvm-svn: 52411
 2008-06-17 15:55:30 +00:00
Duncan Sands
ae9d876e69 Split type expansion into ExpandInteger and ExpandFloat 
rather than bundling them together.  Rename FloatToInt
to PromoteFloat (better, if not perfect).  Reorganize
files by types rather than by operations.

llvm-svn: 52408
 2008-06-17 14:27:01 +00:00
Matthijs Kooijman
44440c3722 Forgot to commit the ValueTracking header file along with r52396. 
llvm-svn: 52401
 2008-06-17 13:54:33 +00:00
Matthijs Kooijman
dd32cb58b5 Learn IPConstProp to propagate arguments that are directly returned. Strictly 
speaking these are not constant values. However, when a function always returns
one of its arguments, then from the point of view of each caller the return
value is constant (or at least a known value) and can be replaced.

llvm-svn: 52397
 2008-06-17 12:20:24 +00:00
Matthijs Kooijman
f0adaf34a1 Learn IPConstProp to look at individual return values and propagate them 
individually.

Also learn IPConstProp how returning first class aggregates work, in addition
to old style multiple return instructions.

Modify the return-constants testscase to confirm this behaviour.

llvm-svn: 52396
 2008-06-17 12:02:52 +00:00
Matthijs Kooijman
2fba6e78d6 80 column fixes. 
llvm-svn: 52391
 2008-06-17 08:26:32 +00:00
Matthijs Kooijman
dd18157e57 Use a SmallVector instead of an array, since auto_ptr doesn't handle arrays 
properly.

llvm-svn: 52390
 2008-06-17 08:24:37 +00:00
Chris Lattner
f461cca6b7 add a new -enable-value-prop flag for llcbeta, that enables propagation 
of value info (sign/zero ext info) from one MBB to another.  This doesn't
handle much right now because of two limitations:

1) only handles zext/sext, not random bit propagation (no assert exists 
   for this)
2) doesn't handle phis.

llvm-svn: 52383
 2008-06-17 06:09:18 +00:00
Duncan Sands
915b66e08b Fix spelling. 
llvm-svn: 52381
 2008-06-17 03:24:13 +00:00
Evan Cheng
89e2e3292d Rather than avoiding to wrap ISD::DECLARE GV operand in X86ISD::Wrapper, simply handle it at dagisel time with x86 specific isel code. 
llvm-svn: 52377
 2008-06-17 02:01:22 +00:00
Chris Lattner
468adb09d7 Add a missing ~ (dtor became ctor) which caused crashes on a bunch of stuff. 
llvm-svn: 52374
 2008-06-16 23:06:51 +00:00
Evan Cheng
8cfd1d39a1 Do not issue identity copies. 
llvm-svn: 52373
 2008-06-16 22:52:53 +00:00
Dan Gohman
c1fd5f170b Refine the change in r52258 for avoiding use-before-def conditions 
when changing the stride of a comparison so that it's slightly
more precise, by having it scan the instruction list to determine
if there is a use of the condition after the point where the
condition will be inserted.

llvm-svn: 52371
 2008-06-16 22:34:15 +00:00
Chris Lattner
dd707dc82d switch TypeHasCycleThroughItself from using an std::set to using a SmallPtrSet, 
this speeds up the linking testcase in PR1860 by 44% (.379 -> 0.263)

llvm-svn: 52365
 2008-06-16 21:20:58 +00:00
Chris Lattner
6782f56054 stop making PATypeHolder's so crazily. 
llvm-svn: 52364
 2008-06-16 21:17:12 +00:00
Evan Cheng
4e7b7b21a2 Horizontal-add instructions are not commutative. 
llvm-svn: 52363
 2008-06-16 21:16:24 +00:00
Evan Cheng
7b87eb0128 Switch over to SetVector to ensure same order of iterations do not vary across runs. 
llvm-svn: 52361
 2008-06-16 21:08:17 +00:00
Gabor Greif
ae2be0f217 Move some documentation from the header file into ProgrammersManual. About to improve. 
llvm-svn: 52360
 2008-06-16 21:06:12 +00:00
Chris Lattner
3dfc439a87 use a real associative container for type association instead of using 
a vector with a linear search.  This speeds up the linking testcase 
in PR1860 from 0.965s to 0.385s on my system.

llvm-svn: 52357
 2008-06-16 21:00:18 +00:00
Evan Cheng
d27948e716 - Add "Commutative" property to intrinsics. This allows tblgen to generate the commuted variants for dagisel matching code. 
- Mark lots of X86 intrinsics as "Commutative" to allow load folding.

llvm-svn: 52353
 2008-06-16 20:29:38 +00:00
Evan Cheng
acd614c262 mpsadbw is commutable. 
llvm-svn: 52352
 2008-06-16 20:25:59 +00:00
Chris Lattner
f87729aa1f bail out sooner if we have two concrete but different types. 
llvm-svn: 52351
 2008-06-16 20:03:01 +00:00
Chris Lattner
896c38c96a simplify some code. 
llvm-svn: 52350
 2008-06-16 19:55:40 +00:00
Chris Lattner
fe3ddf06a8 Apply a patch from Nathan Keynes, which speeds up llvm-link on 
the testcases in PR1860 from taking more than 1 hour (when I killed it)
to taking 1s.

llvm-svn: 52347
 2008-06-16 19:48:08 +00:00
Owen Anderson
63a604a316 Remove special case handling of empty MBBs now that we assign indices to them. 
llvm-svn: 52345
 2008-06-16 19:32:40 +00:00
Chris Lattner
1a604edf16 handle vectors. Any integers that got here would necessarily be different already. 
llvm-svn: 52341
 2008-06-16 18:27:53 +00:00
Chris Lattner
c24aba4724 Simplify ResolveTypes by pulling the null case out into the one 
client that cares and simplifying its control flow.

Remove the DestST argument to ResolveTypes and RecursiveResolveTypes*
which are dead now.

llvm-svn: 52340
 2008-06-16 18:19:05 +00:00
Evan Cheng
6c6518787b Iterating over SmallPtrSet is not deterministic. 
llvm-svn: 52339
 2008-06-16 18:17:09 +00:00
Chris Lattner
cebf7d79b3 simplify RecursiveResolveTypes and ResolveTypes by pulling the naming out of 
ResolveTypes into the one place that needs it.

llvm-svn: 52338
 2008-06-16 18:11:40 +00:00
Chris Lattner
b2c9317b8d Add a new flag that disables symbol lookup with dlsym when set. This allows 
a JIT client to completely control symbol lookup with the LazyFunctionCreator
interface.

llvm-svn: 52335
 2008-06-16 17:44:14 +00:00
Chris Lattner
ddfa0590ae Add support for icache invalidation on non-darwin ppc systems. 
Patch by Gary Benson!

llvm-svn: 52332
 2008-06-16 17:04:06 +00:00
Owen Anderson
3c4bb80d78 Re-enable empty block indexing by default, since it doesn't seem to have any 
impact on code quality or compile time.

llvm-svn: 52329
 2008-06-16 16:58:24 +00:00
Matthijs Kooijman
2ba9a750dd Make BuildSubAggregate use FindInsertedElement again to prevent it from 
inserting extractvalues. In particular, this prevents the insertion of
extractvalues that can't be folded away later. Also add an example of when this
stuff is needed.

llvm-svn: 52328
 2008-06-16 14:13:46 +00:00
Matthijs Kooijman
544c9b2fb0 Make the InsertBefore argument to FindInsertedValue optional, so you can find an inserted value without modifying the code. 
llvm-svn: 52319
 2008-06-16 13:28:31 +00:00