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8576 Commits

Author SHA1 Message Date
Dan Gohman 6bd3ef82ff Revert an earlier change to SIGN_EXTEND_INREG for vectors. The VTSDNode 
really does need to be a vector type, because
TargetLowering::getOperationAction for SIGN_EXTEND_INREG uses that type,
and it needs to be able to distinguish between vectors and scalars.

Also, fix some more issues with legalization of vector casts.

llvm-svn: 93043
 2010-01-09 02:13:55 +00:00
Evan Cheng 0c6defd577 Dan pointed out checking whether a node is dead by comparing its opcode to ISD::DELETED_NODE is not safe. Use a DAGUpdateListener to remove dead nodes from work list instead. 
llvm-svn: 93031
 2010-01-09 00:21:08 +00:00
Evan Cheng 58ec4fec88 ReplaceAllUsesOfValueWith may delete other nodes that the one being replaced. Do not delete dead nodes again. 
llvm-svn: 92988
 2010-01-08 02:36:12 +00:00
Chris Lattner dab2cd543f Fix rdar://7517201, a regression introduced by r92849. 
When folding a and(any_ext(load)) both the any_ext and the
load have to have only a single use.

This removes the anyext-uses.ll testcase which started failing
because it is unreduced and unclear what it is testing.

llvm-svn: 92950
 2010-01-07 21:59:23 +00:00
Chris Lattner 88de38453f factor this code better and reduce nesting at the same 
time, no functionality change.

llvm-svn: 92948
 2010-01-07 21:53:27 +00:00
Evan Cheng 16b75ce19c APInt'fy TargetLowering::SimplifySetCC to fix PR5963. 
llvm-svn: 92943
 2010-01-07 20:58:44 +00:00
Benjamin Kramer b757a82902 Simplify code. No intended functionality/performance change. 
llvm-svn: 92938
 2010-01-07 19:46:15 +00:00
Benjamin Kramer 2b45998b7b Kill dead store. 
llvm-svn: 92920
 2010-01-07 17:50:57 +00:00
Benjamin Kramer d64b952e5e Remove dead variable. 
llvm-svn: 92919
 2010-01-07 17:29:08 +00:00
Benjamin Kramer cdb3889791 Use pop_back_val instead of back()+pop_back. 
llvm-svn: 92918
 2010-01-07 17:27:56 +00:00
Jakob Stoklund Olesen 29c7234eb7 Allow double defs after tail duplication. 
llvm-svn: 92874
 2010-01-06 23:52:46 +00:00
Jakob Stoklund Olesen 29a64c9575 Add Target hook to duplicate machine instructions. 
Some instructions refer to unique labels, and so cannot be trivially cloned
with CloneMachineInstr.

llvm-svn: 92873
 2010-01-06 23:47:07 +00:00
Jim Grosbach a7cef4fab5 Anti-dependency breaking needs to be careful regarding instructions with 
multiple register definitions.

llvm-svn: 92864
 2010-01-06 22:21:25 +00:00
Evan Cheng 746012a6c1 Comment. 
llvm-svn: 92850
 2010-01-06 19:43:21 +00:00
Evan Cheng 166a4e6caa Teach dag combine to fold the following transformation more aggressively: 
(OP (trunc x), (trunc y)) -> (trunc (OP x, y))

Unfortunately this simple change causes dag combine to infinite looping. The problem is the shrink demanded ops optimization tend to canonicalize expressions in the opposite manner. That is badness. This patch disable those optimizations in dag combine but instead it is done as a late pass in sdisel.

This also exposes some deficiencies in dag combine and x86 setcc / brcond lowering. Teach them to look pass ISD::TRUNCATE in various places.

llvm-svn: 92849
 2010-01-06 19:38:29 +00:00
Jim Grosbach eb431da074 80 column and whitespace cleanup 
llvm-svn: 92837
 2010-01-06 16:48:02 +00:00
Lang Hames 68dd9c7dd7 Fixed malformed -*- lines in PBQP headers. 
llvm-svn: 92830
 2010-01-06 08:53:34 +00:00
Jakob Stoklund Olesen 7725526de1 Add <imp-def> and <imp-kill> operands when replacing virtual sub-register defs and kills. 
An instruction like this:

  %reg1097:1<def> = VMOVSR %R3<kill>, 14, %reg0

Must be replaced with this when substituting physical registers:

  %S0<def> = VMOVSR %R3<kill>, 14, %reg0, %D0<imp-def>

llvm-svn: 92812
 2010-01-06 00:29:28 +00:00
Bill Wendling c075acbb54 The previous code could potentially cause a cycle. Allow ordering w.r.t. a 0 order. 
llvm-svn: 92810
 2010-01-06 00:23:35 +00:00
Bill Wendling 578865ff3d Only check the ordering if there is an ordering for each nodes. 
llvm-svn: 92807
 2010-01-06 00:09:23 +00:00
Bill Wendling 0a7056fe52 Add a semi-primitive form of scheduling via the "SDNode ordering" to the 
bottom-up scheduler. We prefer the lower order number.

llvm-svn: 92806
 2010-01-05 23:48:12 +00:00
Bill Wendling 03f0af372c Don't assign the shift the same type as the variable being shifted. This could 
result in illegal types for the SHL operator.

llvm-svn: 92797
 2010-01-05 22:39:10 +00:00
Dan Gohman 404a984780 Don't use the ISD::NodeType enum for SDNode opcodes, as CodeGen 
uses several kinds of opcode values which are not declared within
that enum. This fixes PR5946.

llvm-svn: 92794
 2010-01-05 22:26:32 +00:00
Dan Gohman c3f2137c06 Restore dump() methods to Loop and MachineLoop. 
llvm-svn: 92772
 2010-01-05 21:08:02 +00:00
Benjamin Kramer d2564e3afb Move remaining stuff to the isInteger predicate. 
llvm-svn: 92771
 2010-01-05 21:05:54 +00:00
Jakob Stoklund Olesen 4cb7702c4f Remove livein checks from machine code verifier. 
A phi operand that is implicitly defined in a predecessor becomes an undefined
register after phi elimination. This causes a lot of false positives when the
verifier is checking if live-in registers are live-out from all predecessors.

Removing the verifier checks seems like a better solution than insisting on
IMPLICIT_DEF instructions in predecessor blocks.

llvm-svn: 92769
 2010-01-05 20:59:36 +00:00
Devang Patel d146e2e3df If a scope has only one instruction then first instruction is also the last instruction. 
llvm-svn: 92736
 2010-01-05 16:59:17 +00:00
Benjamin Kramer ccce8bae14 Avoid going through the LLVMContext for type equality where it's safe to dereference the type pointer. 
llvm-svn: 92726
 2010-01-05 13:12:22 +00:00
Devang Patel 33f80d2303 Delete renaming use of dead dbg intrinsics. 
Intrinsic::dbg_stoppoint
 Intrinsic::dbg_region_start
 Intrinsic::dbg_region_end
 Intrinsic::dbg_func_start

llvm-svn: 92672
 2010-01-05 01:47:06 +00:00
Devang Patel 43ef34d2a5 Use StringRef.startswith(). 
llvm-svn: 92671
 2010-01-05 01:46:14 +00:00
David Greene 30ed3ca034 Change errs() to dbgs(). 
llvm-svn: 92597
 2010-01-05 01:26:11 +00:00
David Greene d18966c79f Change errs() to dbgs(). 
llvm-svn: 92596
 2010-01-05 01:26:09 +00:00
David Greene fc886b99da Change errs() to dbgs(). 
llvm-svn: 92595
 2010-01-05 01:26:05 +00:00
David Greene aa8ce38113 Change errs() to dbgs(). 
llvm-svn: 92594
 2010-01-05 01:26:01 +00:00
David Greene 4b7aa24842 Change errs() to dbgs(). 
llvm-svn: 92593
 2010-01-05 01:26:00 +00:00
David Greene 7e34eadd91 Change errs() to dbgs(). 
llvm-svn: 92592
 2010-01-05 01:25:58 +00:00
David Greene 9f23703919 Change errs() to dbgs(). 
llvm-svn: 92591
 2010-01-05 01:25:55 +00:00
David Greene e3f851db18 Change errs() to dbgs(). 
llvm-svn: 92590
 2010-01-05 01:25:52 +00:00
David Greene 714520fb89 Change errs() to dbgs(). 
llvm-svn: 92589
 2010-01-05 01:25:50 +00:00
David Greene 97d9fc8cdb Change errs() to dbgs(). 
llvm-svn: 92588
 2010-01-05 01:25:47 +00:00
David Greene 91c42f851b Change errs() to dbgs(). 
llvm-svn: 92587
 2010-01-05 01:25:45 +00:00
David Greene 7e256f397c Change errs() to dbgs(). 
llvm-svn: 92586
 2010-01-05 01:25:43 +00:00
David Greene 94745d0d10 Change errs() to dbgs(). 
llvm-svn: 92585
 2010-01-05 01:25:41 +00:00
David Greene 0c1e7772fb Change errs() to dbgs(). 
llvm-svn: 92584
 2010-01-05 01:25:39 +00:00
David Greene 025e934d54 Change errs() to dbgs(). 
llvm-svn: 92583
 2010-01-05 01:25:20 +00:00
David Greene 85afc853b5 Change errs() to dbgs(). 
llvm-svn: 92582
 2010-01-05 01:25:15 +00:00
David Greene 4eb5bed65b Change errs() to dbgs(). 
llvm-svn: 92581
 2010-01-05 01:25:11 +00:00
David Greene d65bc15c81 Change errs() to dbgs(). 
llvm-svn: 92580
 2010-01-05 01:25:09 +00:00
David Greene 6f021a30fe Change errs() to dbgs(). 
llvm-svn: 92579
 2010-01-05 01:25:04 +00:00
David Greene fe5c3524c7 Change errs() to dbgs(). 
llvm-svn: 92578
 2010-01-05 01:25:00 +00:00