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5998 Commits

Author SHA1 Message Date
Mon P Wang
b6661b480b 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
52ce276405 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
4421962b9b 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
95967fc7b7 Correct a comment. 
llvm-svn: 59341
 2008-11-15 00:24:23 +00:00
Dan Gohman
b4151fd731 Move ScheduleDAGList's LatencyPriorityQueue class out to a separate file. 
llvm-svn: 59340
 2008-11-15 00:23:40 +00:00
Dan Gohman
521cee6a9c 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
ed5d29fea5 Test commit. 
llvm-svn: 59293
 2008-11-14 06:51:35 +00:00
Dan Gohman
bab393fdff 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
5b7b7b416b Check in the correct version of the patch in r59279. 
llvm-svn: 59280
 2008-11-14 00:32:34 +00:00
Dan Gohman
ad452993b0 Debug printing for SUnits that carry MachineInstrs. 
llvm-svn: 59279
 2008-11-14 00:28:56 +00:00
Dan Gohman
f92f2d0c97 Initial support for carrying MachineInstrs in SUnits. 
llvm-svn: 59278
 2008-11-14 00:06:09 +00:00
Dan Gohman
2e0edf0617 Change DOTGraphTraits<ScheduleDAG*>::getGraphName how to find the name of 
the current function on its own, rather than relying on the SelectionDAG.

llvm-svn: 59277
 2008-11-13 23:45:55 +00:00
Dan Gohman
0a3ae5c0f2 Remove the FlaggedNodes member from SUnit. Instead of requiring each SUnit 
to carry a SmallVector of flagged nodes, just calculate the flagged nodes
dynamically when they are needed.

The local-liveness change is due to a trivial scheduling change where
the scheduler arbitrary decision differently.

llvm-svn: 59273
 2008-11-13 23:24:17 +00:00
Owen Anderson
aa9f1836d9 Don't allow the restore point to be placed after terminators. With this change, 
MultiSource/Applications is clean with the prealloc splitter.  Some failures
remain in SPEC.

llvm-svn: 59267
 2008-11-13 21:53:14 +00:00
Dan Gohman
0cefa8f2ff Make the Node member of SUnit private, and add accessors. 
llvm-svn: 59264
 2008-11-13 21:36:12 +00:00
Dan Gohman
df9f75e981 Change ScheduleDAG's DAG member from a reference to a pointer, to prepare 
for the possibility of scheduling without a SelectionDAG being present.

llvm-svn: 59263
 2008-11-13 21:21:28 +00:00
Dan Gohman
f63a02ae6c Use find_first/find_next to iterate through all the set bits in a 
BitVector, instead of manually testing each bit.

llvm-svn: 59246
 2008-11-13 16:31:27 +00:00
Bill Wendling
f5b264a64b Implement stack protectors as function attributes: "ssp" and "sspreq". 
llvm-svn: 59202
 2008-11-13 01:02:14 +00:00
Dan Gohman
229c65c05b Move the code that inserts X87 FP_REG_KILL instructions from a 
special-purpose hook to a new pass. Also, add check to see if any
x87 virtual registers are used, to avoid doing any work in the
common case that no x87 code is needed.

llvm-svn: 59190
 2008-11-12 22:55:05 +00:00
Dale Johannesen
5ad71e113e Fix unsigned char->ppcf128 conversion. 
llvm-svn: 59150
 2008-11-12 18:38:44 +00:00
Dan Gohman
5f3e5a75b4 Do the LiveVariables update before printing the instruction in 
the debug output, so that the updated liveness flags are
reflected in the debug output.

llvm-svn: 59147
 2008-11-12 17:15:19 +00:00
Dan Gohman
ceb5b7477b Remove some debugging code made redundant by the change to do 
coalescing as a separate pass rather than inside of
LiveIntervalAnalysis.

llvm-svn: 59146
 2008-11-12 17:09:23 +00:00
Duncan Sands
4e70a21580 Simplify SplitVecRes_EXTRACT_SUBVECTOR. This means 
that it no longer handles non-power-of-two vectors.
However it previously only handled them sometimes,
depending on obscure numerical relationships between
the index and vector type.  For example, for a vector
of length 6, it would succeed if and only if the
index was an even multiple of 6.  I consider this
more confusing than useful.

llvm-svn: 59122
 2008-11-12 08:37:57 +00:00
Duncan Sands
117397c8dd Correct some thinkos in the expansion of ADD/SUB 
when the target does not support ADDC/SUBC.  This
fixes PR3044.

llvm-svn: 59120
 2008-11-12 08:23:26 +00:00
Dale Johannesen
a2cd0724ea Fix the testb optimization so x86 also bootstraps. 
Reenable test.

llvm-svn: 59101
 2008-11-12 02:00:35 +00:00
Owen Anderson
3ef1e1ff3f Don't walk into predecessors in which the vreg is not live when doing shrinkwrapping. 
This lets several failing tests get farther along, but doesn't completely fix any of them.

llvm-svn: 59086
 2008-11-11 22:11:27 +00:00
Dan Gohman
291ea92cc4 In ScheduleDAGRRList::CopyAndMoveSuccessors, create the SUnit for the load 
before creating the SUnit for the operation that it was unfolded from. This
allows each SUnit to have all of its predecessor SUnits available at the time
it is created. I don't know yet if this will be absolutely required, but it
is a little tidier to do it this way.

llvm-svn: 59083
 2008-11-11 21:34:44 +00:00
Dan Gohman
51db591eac Avoid relying on the SelectionDAG for initializing the MachineFunction and 
TargetLoweringInfo variables for the scheduler.

llvm-svn: 59082
 2008-11-11 21:31:56 +00:00
Dan Gohman
ec3b31e7eb Change the scheduler accessor methods to accept an explicit TargetMachine 
argument instead of taking the SelectionDAG's TargetMachine. This is
needed for some upcoming scheduler changes.

llvm-svn: 59055
 2008-11-11 17:50:47 +00:00
Bill Wendling
9da4535062 Fix for PR3040: 
The CC was changed, but wasn't checked to see if it was legal if the DAG
combiner was being run after legalization. Threw in a couple of checks just to
make sure that it's okay. As far as the PR is concerned, no back-end target
actually exhibited this problem, so there isn't an associated testcase.

llvm-svn: 59035
 2008-11-11 08:25:46 +00:00
Mon P Wang
c4bf9b94d5 Cleaned up and fix bugs in convert_rndsat node 
llvm-svn: 59025
 2008-11-11 05:40:06 +00:00
Bill Wendling
d3c149eb90 Small simplification. Use the iterator already present as the insertion point. 
llvm-svn: 59008
 2008-11-10 23:38:59 +00:00
Bill Wendling
891f177dd0 Temporarily revert r58979 and related patch. It's causing a failure in X86 bootstrap: 
Comparing stages 2 and 3
warning: ./cc1-checksum.o differs
warning: ./cc1obj-checksum.o differs
warning: ./cc1objplus-checksum.o differs
warning: ./cc1plus-checksum.o differs
Bootstrap comparison failure!
./alias.o differs
./alloc-pool.o differs
./attribs.o differs
./bb-reorder.o differs
./bitmap.o differs
./build/errors.o differs
./build/genattrtab.o differs
./build/genautomata.o differs
./build/genemit.o differs
./build/genextract.o differs
...

-bw

llvm-svn: 59003
 2008-11-10 21:22:06 +00:00
Bill Wendling
0421da9e9e - Make sure that we don't over-increment the iterator when going through the 
basic blocks.
- Minor code clean-up.

llvm-svn: 59002
 2008-11-10 21:13:10 +00:00
Mon P Wang
6792115592 Added CONVERT_RNDSAT (conversion with rounding and saturation) SDNode to 
support targets that support these conversions. Users should avoid using
this node as the current targets don't generating code for it.

llvm-svn: 59001
 2008-11-10 20:54:11 +00:00
Duncan Sands
22e8a45a01 Fix PR2667: add soft float support for sint_to_fp/uint_to_fp 
where the argument is an apint, or smaller than the minimum
size for which there is a libcall (i32). 

llvm-svn: 58994
 2008-11-10 17:36:26 +00:00
Duncan Sands
eca6e696ca Tweak some comments. 
llvm-svn: 58993
 2008-11-10 17:31:56 +00:00
Duncan Sands
b6c3634c90 Small cleanups. No functionality change intended! 
llvm-svn: 58992
 2008-11-10 17:29:56 +00:00
Duncan Sands
1d0b7dccf7 When promoting the result of fp_to_uint/fp_to_sint, 
inform the optimizers that the result must be zero/
sign extended from the smaller type.  For example,
if a fp to unsigned i16 is promoted to fp to i32,
then we are allowed to assume that the extra 16 bits
are zero (because the result of fp to i16 is undefined
if the result does not fit in an i16).  This is
quite aggressive, but should help the optimizers
produce better code.  This requires correcting a
test which thought that fp_to_uint is some kind
of truncation, which it is not: in the testcase
(which does fp to i1), either the fp value converts
to 0 or 1 or the result is undefined, which is
quite different to truncation.

llvm-svn: 58991
 2008-11-10 17:28:30 +00:00
Dale Johannesen
8a43172ff1 Really fix testb optimization on big-endian. 
Fixes ppc32 bootstrap.

llvm-svn: 58979
 2008-11-10 07:16:42 +00:00
Mon P Wang
911ee5bf8b Added support for the following definition of shufflevector 
<result> = shufflevector <n x <ty>> <v1>, <n x <ty>> <v2>, <m x i32> <mask> 

llvm-svn: 58964
 2008-11-10 04:46:22 +00:00
Chris Lattner
ed6022f676 eliminate a couple more uses of utohexstr. 
llvm-svn: 58963
 2008-11-10 04:35:24 +00:00
Chris Lattner
1185c9a72c Use utohex_buffer instead of utohexstr to avoid creating a temporary 
string in the .ll and .s printers.

llvm-svn: 58962
 2008-11-10 04:30:26 +00:00
Chris Lattner
2fefd3dd69 Fix an over aggressive assumption that struct decls will have a pointer to 
an array that is empty.  Instead of requiring this array, allow a null pointer.
This shrinks all forward references of structs.

llvm-svn: 58959
 2008-11-10 03:48:55 +00:00
Dale Johannesen
27c03be35e Temporarily revert 58825, which breaks PPC bootstrap. 
xs

llvm-svn: 58930
 2008-11-09 06:48:10 +00:00
Anton Korobeynikov
a4933e408d Temporary revert my last commit: it seems it's triggering some subtle bug in backend 
and breaks llvm-gcc

llvm-svn: 58926
 2008-11-08 23:05:05 +00:00
Duncan Sands
da4e03de04 Try to produce better code when scalarizing VSETCC. 
llvm-svn: 58920
 2008-11-08 18:26:48 +00:00
Anton Korobeynikov
e3b9284fa8 Factor out offset printing code into generic AsmPrinter. 
FIXME: it seems, that most of targets don't support
offsets wrt CPI/GlobalAddress', was it intentional?

llvm-svn: 58917
 2008-11-08 17:21:38 +00:00
Evan Cheng
3d9c134136 Rename startFunctionStub to startGVStub since it's also used for GV non-lazy ptr. 
llvm-svn: 58897
 2008-11-08 08:02:53 +00:00
Dale Johannesen
e0608af6a4 Make testb optimization work on big-endian targets. 
llvm-svn: 58874
 2008-11-08 00:01:16 +00:00