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a0e35cae82
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33225 Commits

Author SHA1 Message Date
Chris Lattner
a0e35cae82 teach various passes about blockaddress. We no longer 
crash on any clang tests.

llvm-svn: 85465
 2009-10-29 01:21:20 +00:00
Dale Johannesen
2dcd23d6f7 When there is a 2-instruction spill sequence, record 
the second (store) instruction in SpillSlotToUsesMap
consistently.  I don't think this matters functionally,
but it's cleaner and Evan wants it this way.

llvm-svn: 85463
 2009-10-29 01:15:40 +00:00
Bill Wendling
58923e365d Don't put in these EH changes. 
llvm-svn: 85460
 2009-10-29 00:37:35 +00:00
Chris Lattner
0a782eec94 teach ValueMapper about BlockAddress', making bugpoint a lot more useful. 
llvm-svn: 85458
 2009-10-29 00:31:02 +00:00
Chris Lattner
8f70e602d3 unindent massive blocks, no functionality change. 
llvm-svn: 85457
 2009-10-29 00:28:30 +00:00
Bill Wendling
784d38511f Reverting r85338 for now. It's causing a bootstrap failure on PPC darwin9. 
--- Reverse-merging r85338 into '.':
U    lib/CodeGen/SimpleRegisterCoalescing.cpp
U    lib/CodeGen/SimpleRegisterCoalescing.h

llvm-svn: 85454
 2009-10-29 00:22:16 +00:00
Dan Gohman
c80f1a4033 Add a hasAddressTaken for BasicBlock. 
llvm-svn: 85449
 2009-10-29 00:09:08 +00:00
Bob Wilson
f13be9d41e Reimplement BranchFolding change to avoid tail merging for a 1 instruction 
common tail, except when the OptimizeForSize function attribute is present.
Radar 7338114.

llvm-svn: 85441
 2009-10-28 22:10:20 +00:00
Dale Johannesen
e6fe8733fd When we generate spill code, then decide we don't need 
to spill after all, we weren't handling 2-instruction
spill sequences correctly (PPC Altivec).  We need to
remove the store in this case.  Removing the other
instruction(s) would be goodness but is not needed for
correctness, and isn't done here.  7331562.

llvm-svn: 85437
 2009-10-28 21:56:18 +00:00
Eric Christopher
d34a37560a Make sure we return the right sized type here. 
llvm-svn: 85436
 2009-10-28 21:32:16 +00:00
Bob Wilson
fc1194919b Revert r85346 change to control tail merging by CodeGenOpt::Level. 
I'm going to redo this using the OptimizeForSize function attribute.

llvm-svn: 85426
 2009-10-28 20:46:46 +00:00
Victor Hernandez
917cf94b22 Extend getMallocArraySize() to determine the array size if the malloc argument is: 
ArraySize * ElementSize
ElementSize * ArraySize
ArraySize << log2(ElementSize)
ElementSize << log2(ArraySize)

Refactor isArrayMallocHelper and delete isSafeToGetMallocArraySize, so that there is only 1 copy of the malloc array determining logic.
Update users of getMallocArraySize() to not bother calling isArrayMalloc() as well.

llvm-svn: 85421
 2009-10-28 20:18:55 +00:00
David Goodwin
ae4f8e01b0 Make AntiDepReg.h internal. 
llvm-svn: 85412
 2009-10-28 18:29:54 +00:00
Bob Wilson
af37728221 Add a Thumb BRIND pattern. Change the ARM BRIND assembly to separate the 
opcode and operand with a tab.  Check for these instructions in the usual
places.

llvm-svn: 85411
 2009-10-28 18:26:41 +00:00
Evan Cheng
519b231883 fconsts and fconstd are obviously re-materializable. 
llvm-svn: 85410
 2009-10-28 18:19:56 +00:00
Jim Grosbach
e42dc83a9f Cleanup now that frame index scavenging via post-pass is working for ARM and Thumb2. 
llvm-svn: 85406
 2009-10-28 17:33:28 +00:00
Devang Patel
de81397884 llvm.dbg.global_variables do not exist anymore. 
llvm-svn: 85402
 2009-10-28 16:51:52 +00:00
Chris Lattner
a77d439989 add a new 'SetCurrentDebugType' API (requested by Andrew Haley for JIT 
stuff) to programmatically control the current debug flavor.  While 
I'm at it, doxygenate Debug.h and clean it up.

llvm-svn: 85395
 2009-10-28 15:32:19 +00:00
Dan Gohman
7948563977 Don't call SDNode::isPredecessorOf when it isn't necessary. If the load's 
chains have no users, they can't be predecessors of the condition.

llvm-svn: 85394
 2009-10-28 15:28:02 +00:00
Dan Gohman
a43a2a10a1 Simplify this code: if the unfolded load can't be hoisted, just delete 
the new instructions and leave the old one in place.

llvm-svn: 85393
 2009-10-28 15:23:36 +00:00
Edward O'Callaghan
fbe911a40e No newline at end of file. 
llvm-svn: 85390
 2009-10-28 15:04:53 +00:00
Benjamin Kramer
51f925548b Update CMake file. 
llvm-svn: 85389
 2009-10-28 13:29:18 +00:00
Owen Anderson
cfb2c9edeb Treat lifetime begin/end markers as allocations/frees respectively for the 
purposes for GVN/DSE.

llvm-svn: 85383
 2009-10-28 07:05:35 +00:00
Nick Lewycky
0376e34268 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!

llvm-svn: 85382
 2009-10-28 07:03:15 +00:00
Evan Cheng
16ed5ac7ff Give ARMISD::EH_SJLJ_LONGJMP and EH_SJLJ_SETJMP names. 
llvm-svn: 85381
 2009-10-28 06:55:03 +00:00
Owen Anderson
a2584a4c64 Be more careful about invariance reasoning on "store" queries. Stores still need 
to depend on Ref and ModRef calls within the invariant region.

llvm-svn: 85380
 2009-10-28 06:30:52 +00:00
Evan Cheng
5935e48b96 X86 palignr intrinsics immediate field is in bits. ISel must transform it into bytes. 
llvm-svn: 85379
 2009-10-28 06:30:34 +00:00
Owen Anderson
6cf32f04df Add trivial support for the invariance intrinsics to memdep. This logic is 
purely local for now.

llvm-svn: 85378
 2009-10-28 06:18:42 +00:00
Chris Lattner
1efa0c450a 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.

llvm-svn: 85377
 2009-10-28 05:53:48 +00:00
Chris Lattner
075e225442 bitcode writer support for blockaddress. 
llvm-svn: 85376
 2009-10-28 05:24:40 +00:00
Chris Lattner
f605b2e8f9 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.

llvm-svn: 85375
 2009-10-28 05:14:34 +00:00
Chris Lattner
c22b8deb03 '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.

llvm-svn: 85370
 2009-10-28 04:12:16 +00:00
Dan Gohman
9547c094eb Rewrite SelectionDAG::isPredecessorOf to be iterative instead of 
recursive to avoid consuming extraordinary amounts of stack space
when processing tall graphs.

llvm-svn: 85369
 2009-10-28 03:44:30 +00:00
Chris Lattner
e897be280c 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.

llvm-svn: 85368
 2009-10-28 03:39:23 +00:00
Chris Lattner
a1aa8a092d asmprinter support for BlockAddress. 
llvm-svn: 85367
 2009-10-28 03:38:12 +00:00
Chris Lattner
24819a6e06 when we tear down a module, we need to be careful to 
zap BlockAddress values.

llvm-svn: 85366
 2009-10-28 03:37:35 +00:00
Dan Gohman
076a3b5e25 Teach MachineLICM to unfold loads from constant memory from 
otherwise unhoistable instructions in order to allow the loads
to be hoisted.

llvm-svn: 85364
 2009-10-28 03:21:57 +00:00
Evan Cheng
1babe43881 Use fconsts and fconstd to materialize small fp constants. 
llvm-svn: 85362
 2009-10-28 01:44:26 +00:00
Evan Cheng
4e3bc5efb7 Add a second ValueType argument to isFPImmLegal. 
llvm-svn: 85361
 2009-10-28 01:43:28 +00:00
Dan Gohman
00c9f3e905 Mark dead physregdefs dead immediately. This helps MachineSink and 
MachineLICM and other things which run before LiveVariables is run.

llvm-svn: 85360
 2009-10-28 01:13:53 +00:00
Dan Gohman
a9fb025f00 Allow constants of different types to share constant pool entries 
if they have compatible encodings.

llvm-svn: 85359
 2009-10-28 01:12:16 +00:00
Evan Cheng
1c7dfce330 Remove getIEEEFloatParts and getIEEEDoubleParts. They are not needed. 
llvm-svn: 85358
 2009-10-28 01:08:17 +00:00
Dan Gohman
b20fae567f 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.

llvm-svn: 85357
 2009-10-28 00:55:57 +00:00
Bob Wilson
b709aa6b3c Add an indirect branch pattern for ARM. Testcase will be coming soon. 
llvm-svn: 85355
 2009-10-28 00:37:03 +00:00
Chris Lattner
2bc8002f4c rename indbr -> indirectbr to appease the residents of #llvm. 
llvm-svn: 85351
 2009-10-28 00:19:10 +00:00
Chris Lattner
28895dac5b 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.

llvm-svn: 85349
 2009-10-28 00:01:44 +00:00
Bob Wilson
98c9fb94ab 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.

llvm-svn: 85346
 2009-10-27 23:49:38 +00:00
Jeffrey Yasskin
173c58db88 Rename lib/VMCore/ConstantsContext.h:ValueMap<> to ConstantUniqueMap<> to avoid 
colliding with llvm/ADT/ValueMap.h:ValueMap<>.

llvm-svn: 85344
 2009-10-27 23:45:55 +00:00
Bill Wendling
8f96a88125 Add new note. 
llvm-svn: 85341
 2009-10-27 23:30:07 +00:00
Lang Hames
0a985a409a Fixed a bug in the coalescer where intervals were occasionally merged despite a real interference. This fixes rdar://problem/7157961. 
llvm-svn: 85338
 2009-10-27 23:16:58 +00:00