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Author SHA1 Message Date
Dan Gohman
b8457a1a29 Simplify this code: if the unfolded load can't be hoisted, just delete 
the new instructions and leave the old one in place.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85393 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 15:23:36 +00:00
Edward O'Callaghan
c359ec7021 No newline at end of file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85390 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 15:04:53 +00:00
Benjamin Kramer
3185d702f2 Update CMake file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85389 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 13:29:18 +00:00
Gabor Greif
a5b6f45b68 use metavariable <result> instead of SSA name %result for consistency 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85388 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 13:14:50 +00:00
Gabor Greif
ec58f75d7d ooops, SSA name should not be part of the link 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85387 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 13:05:07 +00:00
Gabor Greif
6a29201565 advertise new syntax for unnamed instructions 
and eliminate confusing double-use of SSA names
(work in progress)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85385 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 09:21:30 +00:00
Owen Anderson
b62f792e78 Treat lifetime begin/end markers as allocations/frees respectively for the 
purposes for GVN/DSE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85383 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 07:05:35 +00:00
Nick Lewycky
40cc524ede Add ABCD, a generalized implementation of the Elimination of Array Bounds 
Checks on Demand algorithm which looks at arbitrary branches instead of loop
iterations. This is GSoC work by Andre Tavares with only editorial changes
applied!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85382 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 07:03:15 +00:00
Evan Cheng
c59420867e Give ARMISD::EH_SJLJ_LONGJMP and EH_SJLJ_SETJMP names. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85381 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 06:55:03 +00:00
Owen Anderson
a85a66423d Be more careful about invariance reasoning on "store" queries. Stores still need 
to depend on Ref and ModRef calls within the invariant region.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85380 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 06:30:52 +00:00
Evan Cheng
89321166da X86 palignr intrinsics immediate field is in bits. ISel must transform it into bytes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85379 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 06:30:34 +00:00
Owen Anderson
4bc737c5ef Add trivial support for the invariance intrinsics to memdep. This logic is 
purely local for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85378 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 06:18:42 +00:00
Chris Lattner
50b136dae9 add bitcode reader support for blockaddress. We can now fully 
round trip blockaddress through .ll and .bc files, so add a testcase.

There are still a bunch of places in the optimizer and other places
that need to be updated to work with these constructs, but at least
the basics are in now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85377 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 05:53:48 +00:00
Chris Lattner
837e04a8bf bitcode writer support for blockaddress. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85376 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 05:24:40 +00:00
Chris Lattner
0eeb913aa1 Previously, all operands to Constant were themselves constant. 
In the new world order, BlockAddress can have a BasicBlock operand.
This doesn't permute much, because if you have a ConstantExpr (or
anything more specific than Constant) we still know the operand has
to be a Constant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85375 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 05:14:34 +00:00
Chris Lattner
46b3abc9f7 doc bug spotted by apinski 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85372 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 04:47:06 +00:00
Chris Lattner
5d81befc21 'static const void *X = &&y' can only be put in the 
readonly section if a reference to the containing function
is valid in the readonly section.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85370 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 04:12:16 +00:00
Dan Gohman
6688d61797 Rewrite SelectionDAG::isPredecessorOf to be iterative instead of 
recursive to avoid consuming extraordinary amounts of stack space
when processing tall graphs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85369 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 03:44:30 +00:00
Chris Lattner
09d9ef4122 full asmparser support for blockaddress. We can now do: 
$ llvm-as foo.ll -d -disable-output

which reads and prints the .ll file.  BC encoding is the
next project.  Testcase will go in once that works.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85368 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 03:39:23 +00:00
Chris Lattner
73050e1c38 asmprinter support for BlockAddress. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85367 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 03:38:12 +00:00
Chris Lattner
1e0dc8e123 when we tear down a module, we need to be careful to 
zap BlockAddress values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85366 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 03:37:35 +00:00
Chris Lattner
6d013fc381 basic blocks can now have non-instruction users. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85365 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 03:36:44 +00:00
Dan Gohman
589f1f5a43 Teach MachineLICM to unfold loads from constant memory from 
otherwise unhoistable instructions in order to allow the loads
to be hoisted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85364 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 03:21:57 +00:00
Evan Cheng
39382427f1 Use fconsts and fconstd to materialize small fp constants. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85362 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 01:44:26 +00:00
Evan Cheng
a1eaa3c52b Add a second ValueType argument to isFPImmLegal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85361 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 01:43:28 +00:00
Dan Gohman
a104d1eab2 Mark dead physregdefs dead immediately. This helps MachineSink and 
MachineLICM and other things which run before LiveVariables is run.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85360 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 01:13:53 +00:00
Dan Gohman
83f6120c9a Allow constants of different types to share constant pool entries 
if they have compatible encodings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85359 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 01:12:16 +00:00
Evan Cheng
c5a75523ef Remove getIEEEFloatParts and getIEEEDoubleParts. They are not needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85358 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 01:08:17 +00:00
Dan Gohman
aa123224c4 Update SystemZ to use PSW following the way x86 uses EFLAGS. Besides 
eliminating a use of MVT::Flag, this is needed for an upcoming CodeGen
change.

This unfortunately requires SystemZ to switch to the list-burr
scheduler, in order to handle the physreg defs properly, however
that's what LLVM has available at this time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85357 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 00:55:57 +00:00
Bob Wilson
04ea6e5150 Add an indirect branch pattern for ARM. Testcase will be coming soon. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85355 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 00:37:03 +00:00
Jeffrey Yasskin
b235224ee7 Fix the ModuleDeletion test on PPC and ARM. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85352 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 00:28:31 +00:00
Chris Lattner
ab21db79ef rename indbr -> indirectbr to appease the residents of #llvm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85351 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 00:19:10 +00:00
Chris Lattner
2ee11eccdd IR support for the new BlockAddress constant kind. This is 
untested and there is no way to use it, next up: doing battle
with asmparser.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85349 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 00:01:44 +00:00
Bob Wilson
cd4f04d6bc Record CodeGen optimization level in the BranchFolding pass so that we can 
use it to control tail merging when there is a tradeoff between performance
and code size.  When there is only 1 instruction in the common tail, we have
been merging.  That can be good for code size but is a definite loss for
performance.  Now we will avoid tail merging in that case when the
optimization level is "Aggressive", i.e., "-O3".  Radar 7338114.

Since the IfConversion pass invokes BranchFolding, it too needs to know
the optimization level.  Note that I removed the RegisterPass instantiation
for IfConversion because it required a default constructor.  If someone
wants to keep that for some reason, we can add a default constructor with
a hard-wired optimization level.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85346 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 23:49:38 +00:00
Jeffrey Yasskin
03236140fa Rename lib/VMCore/ConstantsContext.h:ValueMap<> to ConstantUniqueMap<> to avoid 
colliding with llvm/ADT/ValueMap.h:ValueMap<>.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85344 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 23:45:55 +00:00
Bill Wendling
c872e9c07d Add new note. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85341 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 23:30:07 +00:00
Lang Hames
1239c9656b Fixed a bug in the coalescer where intervals were occasionally merged despite a real interference. This fixes rdar://problem/7157961. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85338 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 23:16:58 +00:00
Jim Grosbach
a6a99b4e16 Enable virtual register based frame index scavenging by default for ARM & T2. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85335 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 22:52:29 +00:00
Bill Wendling
5a56927345 Move and clarify note. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85334 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 22:48:31 +00:00
Jim Grosbach
3dab277857 Infrastructure for dynamic stack realignment on ARM. For now, this is off by 
default behind a command line option. This will enable better performance for
vectors on NEON enabled processors.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85333 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 22:45:39 +00:00
Bill Wendling
de020736c0 Note corrected. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85332 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 22:43:24 +00:00
Bill Wendling
d8499c9b7f Modify note. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85331 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 22:40:45 +00:00
Jeffrey Yasskin
18fec73e29 Revert the API changes from r85295 to make it easier for people to build 
against both 2.6 and HEAD.  The default is still changed to eager jitting.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85330 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 22:39:42 +00:00
Bill Wendling
1ff2c485e2 Add a note. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85329 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 22:34:43 +00:00
Devang Patel
50b6e33584 Factor out redundancy from clone() implementations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85327 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 22:16:29 +00:00
Dan Gohman
eef55dc3fd Update the MachineBasicBlock CFG for an indirect branch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85325 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 22:10:34 +00:00
Dan Gohman
64825153a2 Add CodeGen support for indirect branches. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85323 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 21:56:26 +00:00
Chris Lattner
569d9d910b typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85322 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 21:52:54 +00:00
Chris Lattner
2dfdf2ab3c you can't take the address of the entry block of a function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85321 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 21:49:40 +00:00
Chris Lattner
3fd77cefc1 improvements from gabor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85320 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 21:44:20 +00:00