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3705 Commits

Author SHA1 Message Date
Nate Begeman
d34c7760b3 Do not add the SVOffset to the Node CSE ID. The same pointer argument cannot have different 
SVOffsets.

llvm-svn: 81937
 2009-09-15 22:30:11 +00:00
Nate Begeman
e7fa31031b Better solution for tracking both the original alignment of the access, and the current alignment based 
on the source value offset.  This avoids increasing the size of mem nodes. 

llvm-svn: 81897
 2009-09-15 19:05:41 +00:00
Nate Begeman
ebc8c4a3f1 Remove incorrect CSE code from r81813. 
llvm-svn: 81819
 2009-09-15 00:38:09 +00:00
Nate Begeman
729869a398 Substantially speed up combiner-aa in the following ways: 
1. Switch from an std::set to a SmallPtrSet for visited chain nodes.
2. Do not force the recursive flattening of token factor nodes, regardless of
   use count.
3. Immediately process newly created TokenFactor nodes.

Also, improve combiner-aa by teaching it that loads to non-overlapping offsets
of relatively aligned objects cannot alias.

These changes result in a >5x speedup for combiner-aa on most testcases.

llvm-svn: 81816
 2009-09-15 00:18:30 +00:00
Nate Begeman
a9e552182a Teach the legalizer to propagate the original alignment of loads and store when 
it splits them.

llvm-svn: 81815
 2009-09-15 00:14:28 +00:00
Nate Begeman
e9572a945b Add an "original alignment" field to load and store nodes. This enables the 
DAG Combiner to disambiguate chains for loads and stores of types which are
 broken up by the Legalizer into smaller pieces.  

llvm-svn: 81813
 2009-09-15 00:13:12 +00:00
Chris Lattner
fbe97bcd52 kill off the last use of TRI::AsmName. 
llvm-svn: 81727
 2009-09-13 22:42:03 +00:00
Dan Gohman
685eb70d06 Make fast-isel try ISD::FNEG before resorting to bitcasts and xors. 
llvm-svn: 81493
 2009-09-11 00:36:43 +00:00
Dan Gohman
964c0b8333 Reapply r81171 with a fix: don't try to use i64 when it 
isn't legal.

llvm-svn: 81492
 2009-09-11 00:34:46 +00:00
Bob Wilson
7b39f31422 Don't swap the operands of a subtraction when trying to create a 
post-decrement load/store.

llvm-svn: 81464
 2009-09-10 22:09:31 +00:00
Bob Wilson
76cffeddd1 Revert r81171 which was causing pr4927. 
llvm-svn: 81415
 2009-09-10 00:49:22 +00:00
Dan Gohman
beccd0690e When widening a vector load, use the correct chain. This fixes PR4891. 
llvm-svn: 81343
 2009-09-09 14:22:57 +00:00
Chris Lattner
0b34068b2b change selectiondag to add the sign extended versions of immediate operands 
to instructions instead of zero extended ones.  This makes the asmprinter
print signed values more consistently.  This apparently only really affects
the X86 backend.

llvm-svn: 81265
 2009-09-08 23:05:44 +00:00
Dan Gohman
8f7b263087 Fix an abort on a store of an empty struct member. getValue returns 
null in the case of an empty struct, so don't try to call getNumValues
on it.

llvm-svn: 81180
 2009-09-08 01:44:02 +00:00
Dan Gohman
572ecc26b6 Fix a thinko: When lowering fneg with xor, bitcast the operands 
from floating-point to integer first, and bitcast the result
back to floating-point. Previously, this test was passing by
falling back to SelectionDAG lowering. The resulting code isn't
as nice, but it's correct and CodeGen now stays on the fast path.

llvm-svn: 81171
 2009-09-07 23:47:14 +00:00
Duncan Sands
942d35c184 Simplify. Testing shows that this is not equivalent to BBI = CR.CaseBB + 1. 
llvm-svn: 81124
 2009-09-06 18:03:32 +00:00
Duncan Sands
598fe699d0 Remove some not-really-used variables, as warned 
about by icc (#593, partial).  Patch by Erick Tryzelaar.

llvm-svn: 81115
 2009-09-06 12:41:19 +00:00
Duncan Sands
10c1356bad Remove some unused variables and methods warned about by 
icc (#177, partial).  Patch by Erick Tryzelaar.

llvm-svn: 81106
 2009-09-06 08:33:48 +00:00
Devang Patel
7b422c1956 Detect VLAs. 
Do not use DenseMap operator[] because it inserts new entry if lookup fails. Use find() to check an entry in a DenseMap first.

llvm-svn: 81058
 2009-09-05 00:34:14 +00:00
Dan Gohman
c24fb1af4f LLVM currently represents floating-point negation as -0.0 - x. Fix 
FastISel to recognize this pattern and emit a floating-point
negation using xor.

llvm-svn: 80963
 2009-09-03 22:53:57 +00:00
Dan Gohman
69e9573064 Recognize more opportunities to use SSE min and max instructions, 
swapping the operands if necessary.

llvm-svn: 80940
 2009-09-03 20:34:31 +00:00
Sandeep Patel
9c4e094e2a Retype from unsigned to CallingConv::ID accordingly. Approved by Bob Wilson. 
llvm-svn: 80773
 2009-09-02 08:44:58 +00:00
Daniel Dunbar
9872eb764c Remove Offset from ExternalSybmol MachineOperands, this is unused (and at least partly unsupported, in X86 encoding at least). 
llvm-svn: 80726
 2009-09-01 22:06:46 +00:00
Devang Patel
fbaeda732e Reapply 79977. 
Use MDNodes to encode debug info in llvm IR.

llvm-svn: 80406
 2009-08-28 23:24:31 +00:00
Anton Korobeynikov
c61d5bbbe2 Add extload expansion for f128 
llvm-svn: 80116
 2009-08-26 17:39:40 +00:00
Devang Patel
10c075a316 Revert 79977. It causes llvm-gcc bootstrap failures on some platforms. 
llvm-svn: 80073
 2009-08-26 05:01:18 +00:00
Owen Anderson
3b65ce66e8 Get rid of this horrible "benign race" by exploiting ManagedStatic to initialize 
the array on its first access.

llvm-svn: 80040
 2009-08-25 22:27:22 +00:00
Devang Patel
7d42bfab6c Update DebugInfo interface to use metadata, instead of special named llvm.dbg.... global variables, to encode debugging information in llvm IR. This is mostly a mechanical change that tests metadata support very well. 
This change speeds up llvm-gcc by more then 6% at "-O0 -g" (measured by compiling InstructionCombining.cpp!)

llvm-svn: 79977
 2009-08-25 05:24:07 +00:00
Daniel Dunbar
411094cde6 Fix some refactos for iostream changes (in -Asserts mode). 
- The world needs better C++ refactoring tools, can I get an Amen!?

llvm-svn: 79843
 2009-08-23 08:50:52 +00:00
Chris Lattner
bd73307361 eliminate uses of cerr() 
llvm-svn: 79834
 2009-08-23 07:05:07 +00:00
Chris Lattner
89d3d59e83 remove a few DOUTs here and there. 
llvm-svn: 79832
 2009-08-23 06:35:02 +00:00
Chris Lattner
1c0452caeb Change Pass::print to take a raw ostream instead of std::ostream, 
update all code that this affects.

llvm-svn: 79830
 2009-08-23 06:03:38 +00:00
Eli Friedman
e8106d9fc6 Add check for completeness. Note that this doesn't actually have any 
effect with the way the current code is structured.

llvm-svn: 79792
 2009-08-23 00:14:19 +00:00
Chris Lattner
5d8af49626 Rename TargetAsmInfo (and its subclasses) to MCAsmInfo. 
llvm-svn: 79763
 2009-08-22 20:48:53 +00:00
Devang Patel
c071d6c1b4 Record variable debug info at ISel time directly. 
llvm-svn: 79742
 2009-08-22 17:12:53 +00:00
Owen Anderson
51e0724ae8 Reapply r79708 with the appropriate fix for the case that still requires locking. 
llvm-svn: 79731
 2009-08-22 06:32:36 +00:00
Chris Lattner
b75d76e6d1 revert r79708 + r79711 
llvm-svn: 79720
 2009-08-22 04:07:34 +00:00
Eric Christopher
724f0fec19 Actually remove unused static. Previous commit removed trailing 
whitespace.

llvm-svn: 79711
 2009-08-22 00:41:47 +00:00
Eric Christopher
6da03d3055 Remove unused static. 
llvm-svn: 79710
 2009-08-22 00:40:45 +00:00
Owen Anderson
2a5b6c38b8 Ease contention on this lock by noticing that all writes to the VTs array will 
be of (dynamically) constant values, so races on it are immaterial.  We just need
to ensure that at least one write has completed before return the pointer into it.

With this change, parllc exhibits essentially no overhead on 403.gcc.

llvm-svn: 79708
 2009-08-22 00:29:12 +00:00
Bill Wendling
50e8e856f2 Fix typo. Should check both values of RangeUse for 0. Patch by Marius Wachtler. 
llvm-svn: 79649
 2009-08-21 18:16:06 +00:00
Dan Gohman
eb6fbd7fd1 Add an x86 peep that narrows TEST instructions to forms that use 
a smaller encoding. These kinds of patterns are very frequent in
sqlite3, for example.

llvm-svn: 79439
 2009-08-19 18:16:17 +00:00
David Goodwin
9a605efb84 Use the schedule itinerary operand use/def cycle information to adjust dependence edge latency for post-RA scheduling. 
llvm-svn: 79425
 2009-08-19 16:08:58 +00:00
Eli Friedman
914b41055a PR4737: Fix a nasty bug in load narrowing with non-power-of-two types. 
llvm-svn: 79415
 2009-08-19 08:46:10 +00:00
Dan Gohman
1526c115c0 Be tidy and use a break to exit from a switch block rather than 
just falling through the end.

llvm-svn: 79383
 2009-08-18 23:52:48 +00:00
Dan Gohman
56c2c54a37 Legalize the shift amount operand of SRL_PARTS, SHL_PARTS, and 
SRA_PARTS, as is done for SRL, SHL, and SRA.

llvm-svn: 79380
 2009-08-18 23:36:17 +00:00
Jim Grosbach
5d064eeb2a Remove a bit more cruft from the sjlj moving to a backend pass. 
llvm-svn: 79272
 2009-08-17 20:25:04 +00:00
Jakob Stoklund Olesen
fcfe355efd Be more clever about regclasses in ScheduleDAGSDNodes::EmitCopyFromReg. 
If two uses of a CopyFromReg want different regclasses, first try a common
sub-class, then fall back on the copy emitted in AddRegisterOperand. There is
no need for an assert here. The cross-class joiner usually cleans up nicely.

llvm-svn: 79193
 2009-08-16 17:40:59 +00:00
Evan Cheng
99a029d217 Needs to check whether unaligned load / store of i64 is legal here. 
llvm-svn: 79150
 2009-08-15 23:41:42 +00:00
Benjamin Kramer
b5771e5e21 Unbreak build. Evan, please make sure my changes are correct. 
llvm-svn: 79133
 2009-08-15 20:46:16 +00:00