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8575 Commits

Author SHA1 Message Date
Evan Cheng
afa00d14db 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
f96a9ec02b 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
e0199dff81 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
f68e328a99 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
4523041394 APInt'fy TargetLowering::SimplifySetCC to fix PR5963. 
llvm-svn: 92943
 2010-01-07 20:58:44 +00:00
Benjamin Kramer
bbaf8cac38 Simplify code. No intended functionality/performance change. 
llvm-svn: 92938
 2010-01-07 19:46:15 +00:00
Benjamin Kramer
badb9914d2 Kill dead store. 
llvm-svn: 92920
 2010-01-07 17:50:57 +00:00
Benjamin Kramer
a97aab4995 Remove dead variable. 
llvm-svn: 92919
 2010-01-07 17:29:08 +00:00
Benjamin Kramer
22ec2524fd Use pop_back_val instead of back()+pop_back. 
llvm-svn: 92918
 2010-01-07 17:27:56 +00:00
Jakob Stoklund Olesen
b90023e707 Allow double defs after tail duplication. 
llvm-svn: 92874
 2010-01-06 23:52:46 +00:00
Jakob Stoklund Olesen
a63aa4e54b 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
0beaad246d 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
f9dade0634 Comment. 
llvm-svn: 92850
 2010-01-06 19:43:21 +00:00
Evan Cheng
25dcf9b830 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
2101815d36 80 column and whitespace cleanup 
llvm-svn: 92837
 2010-01-06 16:48:02 +00:00
Lang Hames
3e8519b563 Fixed malformed -*- lines in PBQP headers. 
llvm-svn: 92830
 2010-01-06 08:53:34 +00:00
Jakob Stoklund Olesen
03dea01d94 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
b4f0d6e3b6 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
41e18c3512 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
b7d6746476 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
7e9607ab56 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
9ef9e2c758 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
b4e120e7a7 Restore dump() methods to Loop and MachineLoop. 
llvm-svn: 92772
 2010-01-05 21:08:02 +00:00
Benjamin Kramer
0ba7479f2c Move remaining stuff to the isInteger predicate. 
llvm-svn: 92771
 2010-01-05 21:05:54 +00:00
Jakob Stoklund Olesen
0277c4cd0b 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
eb75073664 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
e90a3c66c4 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
9c02d20409 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
e6e1c93fb9 Use StringRef.startswith(). 
llvm-svn: 92671
 2010-01-05 01:46:14 +00:00
David Greene
e5bee4794b Change errs() to dbgs(). 
llvm-svn: 92597
 2010-01-05 01:26:11 +00:00
David Greene
9fab20f5d2 Change errs() to dbgs(). 
llvm-svn: 92596
 2010-01-05 01:26:09 +00:00
David Greene
9564dbcc2a Change errs() to dbgs(). 
llvm-svn: 92595
 2010-01-05 01:26:05 +00:00
David Greene
e121e605f7 Change errs() to dbgs(). 
llvm-svn: 92594
 2010-01-05 01:26:01 +00:00
David Greene
51c811205c Change errs() to dbgs(). 
llvm-svn: 92593
 2010-01-05 01:26:00 +00:00
David Greene
727e700d3d Change errs() to dbgs(). 
llvm-svn: 92592
 2010-01-05 01:25:58 +00:00
David Greene
71f44c85e8 Change errs() to dbgs(). 
llvm-svn: 92591
 2010-01-05 01:25:55 +00:00
David Greene
6000f59a50 Change errs() to dbgs(). 
llvm-svn: 92590
 2010-01-05 01:25:52 +00:00
David Greene
879bc8bffa Change errs() to dbgs(). 
llvm-svn: 92589
 2010-01-05 01:25:50 +00:00
David Greene
39454e8cb5 Change errs() to dbgs(). 
llvm-svn: 92588
 2010-01-05 01:25:47 +00:00
David Greene
99517775a2 Change errs() to dbgs(). 
llvm-svn: 92587
 2010-01-05 01:25:45 +00:00
David Greene
ecb5255809 Change errs() to dbgs(). 
llvm-svn: 92586
 2010-01-05 01:25:43 +00:00
David Greene
ce47312026 Change errs() to dbgs(). 
llvm-svn: 92585
 2010-01-05 01:25:41 +00:00
David Greene
5857f38bbe Change errs() to dbgs(). 
llvm-svn: 92584
 2010-01-05 01:25:39 +00:00
David Greene
8e4443c9ae Change errs() to dbgs(). 
llvm-svn: 92583
 2010-01-05 01:25:20 +00:00
David Greene
9f18bb0e40 Change errs() to dbgs(). 
llvm-svn: 92582
 2010-01-05 01:25:15 +00:00
David Greene
b1764ac8cb Change errs() to dbgs(). 
llvm-svn: 92581
 2010-01-05 01:25:11 +00:00
David Greene
54706ebebb Change errs() to dbgs(). 
llvm-svn: 92580
 2010-01-05 01:25:09 +00:00
David Greene
4f5be2f621 Change errs() to dbgs(). 
llvm-svn: 92579
 2010-01-05 01:25:04 +00:00
David Greene
bf6025f893 Change errs() to dbgs(). 
llvm-svn: 92578
 2010-01-05 01:25:00 +00:00
David Greene
2c9dbf7b18 Change errs() to dbgs(). 
llvm-svn: 92577
 2010-01-05 01:24:57 +00:00