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6038 Commits

Author SHA1 Message Date
Dan Gohman
3f656dfa03 Facter AddPseudoTwoAddrDeps and associated infrasructure out of 
the list-burr scheduler so that it can be used by the list-tdrr
scheduler too.

llvm-svn: 59698
 2008-11-20 02:45:51 +00:00
Evan Cheng
c22215a090 - Register scavenger should use MachineRegisterInfo and internal map to find the first use of a register after a given machine instruction. 
- When scavenging a register, in addition to the spill, insert a restore before the first use.
- Abort if client is looking to scavenge a register even when a previously scavenged register is still live.

llvm-svn: 59697
 2008-11-20 02:32:35 +00:00
Dan Gohman
866b034839 Add #include <climits> to get the definition of INT_MAX. 
llvm-svn: 59692
 2008-11-20 01:41:34 +00:00
Dan Gohman
4ce15e12b9 Factor out the code for verifying the work of the scheduler, 
extend it a bit, and make use of it in all schedulers, to
ensure consistent checking.

llvm-svn: 59689
 2008-11-20 01:26:25 +00:00
Dan Gohman
4c3034f711 Simplify this code a little. In the fast scheduler, CreateNewSUnit 
and CreateClone don't add any extra value.

llvm-svn: 59679
 2008-11-19 23:39:02 +00:00
Dan Gohman
60cb69e665 Experimental post-pass scheduling support. Post-pass scheduling 
is currently off by default, and can be enabled with
-disable-post-RA-scheduler=false.

This doesn't have a significant impact on most code yet because it doesn't
yet do anything to address anti-dependencies and it doesn't attempt to
disambiguate memory references. Also, several popular targets
don't have pipeline descriptions yet.

The majority of the changes here are splitting the SelectionDAG-specific
code out of ScheduleDAG, so that ScheduleDAG can be moved to
libLLVMCodeGen.a. The interface between ScheduleDAG-using code and
the rest of the scheduling code is somewhat rough and will evolve.

llvm-svn: 59676
 2008-11-19 23:18:57 +00:00
Dan Gohman
f4d95fdce9 Move the code for printing a graph node label for an SUnit into 
a virtual method of SelectionDAG.

llvm-svn: 59667
 2008-11-19 22:09:45 +00:00
Dan Gohman
78fb6214f3 Convert SUnit's dump method into a print method and implement 
dump in terms of it.

llvm-svn: 59665
 2008-11-19 21:32:03 +00:00
Argyrios Kyrtzidis
4172d641d1 Fix compilation error on MSVC. 
llvm-svn: 59629
 2008-11-19 12:56:21 +00:00
Owen Anderson
1af37c2fca Add support for rematerialization in pre-alloc-splitting. 
llvm-svn: 59587
 2008-11-19 04:28:29 +00:00
Dan Gohman
82016c243b Rearrange code to reduce the nesting level. No functionality change. 
llvm-svn: 59580
 2008-11-19 02:00:32 +00:00
Dan Gohman
eb87975384 Fix debug printing of flagged SDNodes in SUnits so that they 
print in the correct order.

llvm-svn: 59567
 2008-11-19 00:04:44 +00:00
Evan Cheng
cdbbc00a4f Make the same change to RegScavenger::backward. 
llvm-svn: 59566
 2008-11-18 23:54:01 +00:00
Evan Cheng
6cea453271 We also need to keep the operand index for two address check. 
llvm-svn: 59562
 2008-11-18 22:56:19 +00:00
Evan Cheng
3095c32c89 Register scavenger should process early clobber defs first. A dead early clobber def should not interfere with a normal def which happens one slot later. 
llvm-svn: 59559
 2008-11-18 22:28:38 +00:00
Dan Gohman
6e58726416 Tidy up ScheduleNodeBottomUp methods, and make them more 
consistent with ScheduleNodeTopDown methods.

llvm-svn: 59550
 2008-11-18 21:22:20 +00:00
Dan Gohman
71b632f905 Update a comment to reflect the current code. 
llvm-svn: 59549
 2008-11-18 21:14:44 +00:00
Duncan Sands
3ca78c675e Remove integer promotion support for FP_EXTEND 
and FP_ROUND.  Not sure what these were doing
here - probably they were sometimes (wrongly)
created with integer operands somewhere that
has since been fixed.

llvm-svn: 59548
 2008-11-18 21:13:59 +00:00
Duncan Sands
97933c3990 Simplify code using helper routines. There is not 
supposed to be any functionality change.

llvm-svn: 59545
 2008-11-18 20:56:22 +00:00
Owen Anderson
896512af94 Fix a bug introduced by my previous patch. With this change, SPEC is now clean with prealloc splitting enabled. 
llvm-svn: 59544
 2008-11-18 20:53:59 +00:00
Dan Gohman
0b2732598c Add more const qualifiers. This fixes build breakage from r59540. 
llvm-svn: 59542
 2008-11-18 19:49:32 +00:00
Dan Gohman
0d9d8ae487 Make some methods const. 
llvm-svn: 59540
 2008-11-18 19:04:29 +00:00
Dan Gohman
1132313e71 Whitespace cleanups. 
llvm-svn: 59532
 2008-11-18 17:05:42 +00:00
Duncan Sands
789dbb906d LegalizeTypes support for splitting and scalarizing 
SCALAR_TO_VECTOR.  I didn't add the testcase, because
once llc gets past scalar-to-vector it hits a SPU target
lowering bug and explodes.

llvm-svn: 59530
 2008-11-18 16:40:48 +00:00
Bill Wendling
13020d22da Rename stackprotector_create intrinsic to stackprotector. 
llvm-svn: 59519
 2008-11-18 11:01:33 +00:00
Duncan Sands
1315f80ea8 Reapply r59464, this time using the correct type 
when softening FNEG.

llvm-svn: 59513
 2008-11-18 09:15:03 +00:00
Bill Wendling
7235002bd1 Remove the stackprotector_check intrinsic. Use a volatile load instead. 
llvm-svn: 59504
 2008-11-18 07:30:57 +00:00
Bill Wendling
eeb0415980 - Use "moveAfter" instead of "remove/insert" of a basic block. 
- Use less indentation in coding.
- Shorten description.
- Update comments.
- Move code around

llvm-svn: 59496
 2008-11-18 05:32:11 +00:00
Dan Gohman
fe1748da07 Fix a typo in a comment. 
llvm-svn: 59489
 2008-11-18 02:50:01 +00:00
Dan Gohman
22d07b14bc Change SUnit's dump method to take a ScheduleDAG* instead of 
a SelectionDAG*.

llvm-svn: 59488
 2008-11-18 02:06:40 +00:00
Bill Wendling
e0d5e67c98 Revert r59464. It was causing this failure: 
Running /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/test/CodeGen/XCore/dg.exp ...
FAIL: /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/test/CodeGen/XCore/fneg.ll
Failed with signal(SIGABRT) at line 1
while running:  llvm-as < /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/test/CodeGen/XCore/fneg.ll |  llc -march=xcore > fneg.ll.tmp1.s
Assertion failed: (VT.isFloatingPoint() && "Cannot create integer FP constant!"), function getConstantFP, file /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/lib/CodeGen/SelectionDAG/SelectionDAG.cpp, line 913.
0   llc                                 0x0092115c _ZN4llvm3sys18RemoveFileOnSignalERKNS0_4PathEPSs + 844
1   libSystem.B.dylib                   0x9217809b _sigtramp + 43
2   ???                                 0xffffffff 0x0 + 4294967295
3   libSystem.B.dylib                   0x921f0ec2 raise + 26
4   libSystem.B.dylib                   0x9220047f abort + 73
5   libSystem.B.dylib                   0x921f2063 __assert_rtn + 101
6   llc                                 0x005a5b0a _ZN4llvm12SelectionDAG13getConmake[1]: *** [check-local] Error 1
make: *** [check] Error 2

llvm-svn: 59487
 2008-11-18 01:49:24 +00:00
Dan Gohman
5ebdb98a6e Avoid using a loop in ReleasePred and ReleaseSucc methods to compute the 
new CycleBound value. Instead, just update CycleBound on each call.
Also, make ReleasePred and ReleaseSucc methods more consistent accross
the various schedulers.

This also happens to make ScheduleDAGRRList's CycleBound computation
somewhat more interesting, though it still doesn't have any noticeable
effect, because no current targets that use the register-pressure
reduction scheduler provide pipeline models.

llvm-svn: 59475
 2008-11-18 00:38:59 +00:00
Dan Gohman
92a36d7a78 Eliminate some trivial differences between the ScheduleNodeTopDown 
functions in these two schedulers.

llvm-svn: 59465
 2008-11-17 21:31:02 +00:00
Duncan Sands
f046b50ecd Add soft float support for a bunch more operations. Original 
patch by Richard Osborne, tweaked and extended by your humble
servant.

llvm-svn: 59464
 2008-11-17 20:52:38 +00:00
Dan Gohman
4f474b092e Don't bother doing latency calculations in the "fast" scheduler. 
llvm-svn: 59461
 2008-11-17 19:52:36 +00:00
Dan Gohman
a687fd8339 Use SUnit's CycleBound field instead of duplicating it in 
a side-car datastructure

llvm-svn: 59458
 2008-11-17 19:45:19 +00:00
Richard Osborne
6751b4a604 Don't produce ADDC/ADDE when expanding SHL unless they are legal 
for the target. This fixes PR3080.

llvm-svn: 59450
 2008-11-17 17:34:31 +00:00
Dan Gohman
17c226b8ca Don't use the isPending flag to mean what the isAvailable flag means. 
llvm-svn: 59445
 2008-11-17 16:37:30 +00:00
Mon P Wang
4964368e0d Fixed legalization of CONVERT_RNDSAT for integers. 
llvm-svn: 59432
 2008-11-17 00:41:12 +00:00
Lang Hames
49ab8bc67d Big PBQP allocator update. Adds coalescing support, stack slot coloring, several bug-fixes. 
llvm-svn: 59414
 2008-11-16 12:12:54 +00:00
Mon P Wang
7a82474387 Improved shuffle normalization to avoid using extract/build when we 
can extract using different indexes for two vectors. Added a few tests
for vector shuffles.

llvm-svn: 59399
 2008-11-16 05:06:27 +00:00
Duncan Sands
da8d2873ed When splitting a SHUFFLE_VECTOR, try to have the result 
use SHUFFLE_VECTOR instead.  If not practical, fall back
to the old scheme of building the split result by hand
using a BUILD_VECTOR.

llvm-svn: 59361
 2008-11-15 09:25:38 +00:00
Mon P Wang
f414cbc1fd Add missing widen operations, fixed widening for extracting a subvector, 
and when loading/storing a widen vector, make sure that they are loaded
and stored in consecutive order.

llvm-svn: 59357
 2008-11-15 06:05:52 +00:00
Dan Gohman
68294c06fe Correct a comment. 
llvm-svn: 59341
 2008-11-15 00:24:23 +00:00
Dan Gohman
d2760c0473 Move ScheduleDAGList's LatencyPriorityQueue class out to a separate file. 
llvm-svn: 59340
 2008-11-15 00:23:40 +00:00
Dan Gohman
1472955eab Add support for building a ScheduleDAG from MachineInstrs. This is currently 
fairly conservative; it doesn't do alias-analysis queries and it doesn't
attempt to break anti-dependencies.

llvm-svn: 59324
 2008-11-14 21:47:58 +00:00
Lang Hames
9a91bd82c5 Test commit. 
llvm-svn: 59293
 2008-11-14 06:51:35 +00:00
Dan Gohman
db8b95a4fa For post-regalloc scheduling, remove the instructions from the block 
before re-inserting them.

llvm-svn: 59281
 2008-11-14 00:33:17 +00:00
Dan Gohman
1a21ab6925 Check in the correct version of the patch in r59279. 
llvm-svn: 59280
 2008-11-14 00:32:34 +00:00
Dan Gohman
8f973f157d Debug printing for SUnits that carry MachineInstrs. 
llvm-svn: 59279
 2008-11-14 00:28:56 +00:00