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198 Commits

Author SHA1 Message Date
Evan Cheng
39d7e00ff9 Fix PR3124: overly strict assert. 
llvm-svn: 60392
 2008-12-02 02:15:36 +00:00
Evan Cheng
7792ca759d Fix PR2898. Spiller delete a store for reuse before it knows for sure the reuse happened. 
Patch by Lang Hames!

llvm-svn: 57720
 2008-10-17 20:56:41 +00:00
Evan Cheng
5fe2abfee8 Fix a very subtle spiller bug: UpdateKills should not forget to track defs of aliases. 
llvm-svn: 57673
 2008-10-17 06:16:07 +00:00
Dan Gohman
9543edc4ef Fix command-line option printing to print two spaces where needed, 
instead of requiring all "short description" strings to begin with
two spaces. This makes these strings less mysterious, and it fixes
some cases where short description strings mistakenly did not
begin with two spaces.

llvm-svn: 57521
 2008-10-14 20:25:08 +00:00
Dan Gohman
8b33abdd5b Don't dereference the end() iterator. Thanks to 
ENABLE_EXPENSIVE_CHECKS for finding this.

llvm-svn: 57181
 2008-10-06 18:00:07 +00:00
Dan Gohman
30c5ce1b7d Switch the MachineOperand accessors back to the short names like 
isReg, etc., from isRegister, etc.

llvm-svn: 57006
 2008-10-03 15:45:36 +00:00
Evan Cheng
b879f93ba5 Propagate subreg index when promoting a load to a copy. 
llvm-svn: 56085
 2008-09-11 01:02:12 +00:00
Evan Cheng
474ba35954 Fix PR2664 - spiller GetRegForReload wasn't respecting sub-register indices on machine operands. 
llvm-svn: 56065
 2008-09-10 20:08:45 +00:00
Evan Cheng
dcce925eb1 Fix an overly strict assertion. Source register of a copy may not be killed, it may be killed by an implicit super-register use. 
llvm-svn: 55762
 2008-09-04 05:43:55 +00:00
Owen Anderson
c68a43890f Make SimpleSpiller respect subregister indices. 
llvm-svn: 54968
 2008-08-19 01:05:33 +00:00
Evan Cheng
a07795a0c3 Fix PR2596: out of bound reference. 
llvm-svn: 54375
 2008-08-05 21:51:46 +00:00
Dan Gohman
e119f3db46 Fix a LocalSpiller leak. This fixes tramp3d-v4. 
llvm-svn: 53766
 2008-07-18 18:28:56 +00:00
Dan Gohman
cd25487258 Pool-allocation for MachineInstrs, MachineBasicBlocks, and 
MachineMemOperands. The pools are owned by MachineFunctions.

This drastically reduces the number of calls to malloc/free made
during the "Emit" phase of scheduling, as well as later phases
in CodeGen. Combined with other changes, this speeds up the
"instruction selection" phase of CodeGen by 10% in some cases.

llvm-svn: 53212
 2008-07-07 23:14:23 +00:00
Evan Cheng
cba32609d2 Cosmetic. 
llvm-svn: 52450
 2008-06-18 07:47:28 +00:00
Evan Cheng
93d91a771c Fix read after free found by valgrind. 
llvm-svn: 52309
 2008-06-16 07:34:17 +00:00
Evan Cheng
2e99c9cbf8 Teach the spiller to commute instructions in order to fold a reload. This hits 410 times on 444.namd and 122 times on 252.eon. 
llvm-svn: 52266
 2008-06-13 23:58:02 +00:00
Evan Cheng
9153a5316c Move #include to right place. 
llvm-svn: 51932
 2008-06-04 09:16:33 +00:00
Bill Wendling
5fbba337e1 Remove warnings about comparison between signed and unsigned expressions. 
llvm-svn: 51465
 2008-05-23 01:29:08 +00:00
David Greene
47ea993e83 Don't attempt to update SpillSlotToUsesMap for stack slots that aren't 
generated by the spiller.

llvm-svn: 51439
 2008-05-22 21:12:21 +00:00
Evan Cheng
55e3957c96 More local spiller complexity! 
If local spiller optimization turns some instruction into an identity copy, it will be removed. If the output register happens to be dead (and source is obviously killed), transfer the kill / dead information to last use / def in the same MBB.

llvm-svn: 51306
 2008-05-20 08:13:21 +00:00
Dan Gohman
bab18cae46 Clean up the use of static and anonymous namespaces. This turned up 
several things that were neither in an anonymous namespace nor static
but not intended to be global.

llvm-svn: 51017
 2008-05-13 00:00:25 +00:00
Evan Cheng
c86c035346 Yet another nasty spiller bug. 
%ecx = op
store %cl<kill>, (addr)
(addr) = op %al

It's not safe to unfold the last operand and eliminate store even though %cl is marked kill. It's a sub-register use which means one of its super-register(s) may be used below.

llvm-svn: 50794
 2008-05-07 00:49:28 +00:00
Evan Cheng
b389b78462 Use of implicit_def is not part of live interval. Create empty intervals for the uses when the live interval is being spilled. 
llvm-svn: 49542
 2008-04-11 17:53:36 +00:00
Evan Cheng
38a755499d Move reMaterialize() from TargetRegisterInfo to TargetInstrInfo. 
llvm-svn: 48995
 2008-03-31 20:40:39 +00:00
Evan Cheng
8d222d6221 Avoid commuting a def MI in order to coalesce a copy instruction away if any use of the same val# is a copy instruction that has already been coalesced. 
llvm-svn: 48833
 2008-03-26 19:03:01 +00:00
Evan Cheng
32a6116ffd A couple of kill marker maintainence bug. 
llvm-svn: 48653
 2008-03-21 19:09:30 +00:00
Evan Cheng
3612a7ed30 Fix PR2138. Apparently any modification to a std::multimap (including remove entries for a different key) can invalidate multimap iterators. 
llvm-svn: 48371
 2008-03-14 20:44:01 +00:00
Dan Gohman
e40582180e Change VirtRegMap's dump to dump to cerr, not DOUT, so that it 
can be called from within a debuger without having -debug specified
on the command-line.

llvm-svn: 48298
 2008-03-12 20:52:10 +00:00
Evan Cheng
1812351f99 Set NextMII after issuing a physical register spill. 
llvm-svn: 48263
 2008-03-12 00:14:07 +00:00
Evan Cheng
909992f970 Minor debug output bug. 
llvm-svn: 48261
 2008-03-12 00:02:46 +00:00
Evan Cheng
665363494f Transfer physical register spill info when load / store folding happens. 
llvm-svn: 48246
 2008-03-11 21:34:46 +00:00
Evan Cheng
af1c76846d When the register allocator runs out of registers, spill a physical register around the def's and use's of the interval being allocated to make it possible for the interval to target a register and spill it right away and restore a register for uses. This likely generates terrible code but is before than aborting. 
llvm-svn: 48218
 2008-03-11 07:19:34 +00:00
Evan Cheng
18064ddb5b Refactor code. Remove duplicated functions that basically do the same thing as 
findRegisterUseOperandIdx, findRegisterDefOperandIndx. Fix some naming inconsistencies.

llvm-svn: 47927
 2008-03-05 00:59:57 +00:00
Evan Cheng
da92e34fe3 Fix a bug in dead spill slot elimination. 
llvm-svn: 47687
 2008-02-27 19:57:11 +00:00
Bill Wendling
2cae66e28b Final de-tabification. 
llvm-svn: 47663
 2008-02-27 06:33:05 +00:00
Evan Cheng
7553230e3a Spiller now remove unused spill slots. 
llvm-svn: 47657
 2008-02-27 03:04:06 +00:00
Bill Wendling
8fb166bf6c Rename PrintableName to Name. 
llvm-svn: 47629
 2008-02-26 21:47:57 +00:00
Bill Wendling
50f5c4be14 Change "Name" to "AsmName" in the target register info. Gee, a refactoring tool 
would have been a Godsend here!

llvm-svn: 47625
 2008-02-26 21:11:01 +00:00
Bill Wendling
af80fae2a7 De-tabify. 
llvm-svn: 47598
 2008-02-26 10:51:52 +00:00
Evan Cheng
fadafa2109 Make sure reload of implicit uses are issued before remat's. 
llvm-svn: 47492
 2008-02-22 19:22:06 +00:00
Evan Cheng
fa73e0c64e Enable re-materialization of instructions which have virtual register operands if 
the definition of the operand also reaches its uses.

llvm-svn: 47475
 2008-02-22 09:24:50 +00:00
Anton Korobeynikov
7dd00942cc Update gcc 4.3 warnings fix patch with recent head changes 
llvm-svn: 47368
 2008-02-20 11:10:28 +00:00
Dan Gohman
cabaec582f Rename MRegisterInfo to TargetRegisterInfo. 
llvm-svn: 46930
 2008-02-10 18:45:23 +00:00
Evan Cheng
83066786b0 Forgot these files. 
llvm-svn: 46896
 2008-02-08 22:05:27 +00:00
Chris Lattner
f83aae613c rename TargetInstrDescriptor -> TargetInstrDesc. 
Make MachineInstr::getDesc return a reference instead
of a pointer, since it can never be null.

llvm-svn: 45695
 2008-01-07 07:27:27 +00:00
Chris Lattner
9d38dfa4a5 Move a bunch more accessors from TargetInstrInfo to TargetInstrDescriptor 
llvm-svn: 45680
 2008-01-07 03:13:06 +00:00
Chris Lattner
f7f96d818f Rename MachineInstr::getInstrDescriptor -> getDesc(), which reflects 
that it is cheap and efficient to get.

Move a variety of predicates from TargetInstrInfo into 
TargetInstrDescriptor, which makes it much easier to query a predicate
when you don't have TII around.  Now you can use MI->getDesc()->isBranch()
instead of going through TII, and this is much more efficient anyway. Not
all of the predicates have been moved over yet.

Update old code that used MI->getInstrDescriptor()->Flags to use the
new predicates in many places.

llvm-svn: 45674
 2008-01-07 01:56:04 +00:00
Owen Anderson
2e866e9cdf Update CodeGen for MRegisterInfo --> TargetInstrInfo changes. 
llvm-svn: 45673
 2008-01-07 01:35:56 +00:00
Owen Anderson
e6856128ab Move some more instruction creation methods from RegisterInfo into InstrInfo. 
llvm-svn: 45484
 2008-01-01 21:11:32 +00:00
Owen Anderson
ae7e2c1e03 Move copyRegToReg from MRegisterInfo to TargetInstrInfo. This is part of the 
Machine-level API cleanup instigated by Chris.

llvm-svn: 45470
 2007-12-31 06:32:00 +00:00