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Author SHA1 Message Date
Chris Lattner
9c5aa00411 Implement an efficient and fully general SSA update mechanism that 
works on unstructured CFGs.  This implements PR217, our oldest open PR.

llvm-svn: 83705
 2009-10-10 09:04:27 +00:00
Chris Lattner
54621efc37 add some WeakVH::operator='s. Without these, assigning 
a Value* to a WeakVH was constructing a temporary WeakVH
(due to the implicit assignment operator).  This avoids
that cost.

llvm-svn: 83704
 2009-10-10 08:27:29 +00:00
Chris Lattner
70895041a7 change some static_cast into cast, pointed out by Gabor. 
llvm-svn: 83703
 2009-10-10 08:01:27 +00:00
Chris Lattner
76985b43e3 add a version of PHINode::getIncomingBlock that takes a raw 
Use, to complement the version that takes a use_iterator.

llvm-svn: 83702
 2009-10-10 07:42:42 +00:00
Chris Lattner
317eb8ff20 random tidying 
llvm-svn: 83701
 2009-10-10 06:22:45 +00:00
Dan Gohman
605f85e0e6 Create a new InstrEmitter class for translating SelectionDAG nodes 
into MachineInstrs. This is mostly just moving the code from
ScheduleDAGSDNodesEmit.cpp into a new class. This decouples MachineInstr
emitting from scheduling.

llvm-svn: 83699
 2009-10-10 01:32:21 +00:00
Dan Gohman
3b025b778b Make getMachineNode return a MachineSDNode* instead of a generic SDNode* 
since it won't do any folding. This will help avoid some inconvenient
casting.

llvm-svn: 83698
 2009-10-10 01:29:16 +00:00
Dan Gohman
84a61978de Remove a no-longer-necessary #include. 
llvm-svn: 83697
 2009-10-10 00:36:09 +00:00
Dan Gohman
177b8de981 Replace X86's CanRematLoadWithDispOperand by calling the target-independent 
MachineInstr::isInvariantLoad instead, which has the benefit of being
more complete.

llvm-svn: 83696
 2009-10-10 00:34:18 +00:00
Dan Gohman
b98d95f4f9 Fix a missing initialization of PostRAScheduler's AA member. 
llvm-svn: 83695
 2009-10-10 00:15:38 +00:00
Dan Gohman
5141b26ffa The ScheduleDAG framework now requires an AliasAnalysis argument, though 
it isn't needed in the ScheduleDAGSDNodes schedulers.

llvm-svn: 83691
 2009-10-09 23:33:48 +00:00
Dan Gohman
b535009219 Update this test; the code is the same but it gets counted as one 
fewer remat.

llvm-svn: 83690
 2009-10-09 23:31:04 +00:00
Dan Gohman
168ae2c7d5 Mark the LDR instruction with isReMaterializable, as it is rematerializable 
when loading from an invariant memory location.

llvm-svn: 83688
 2009-10-09 23:28:27 +00:00
Dan Gohman
5bfc2416fe Factor out LiveIntervalAnalysis' code to determine whether an instruction 
is trivially rematerializable and integrate it into
TargetInstrInfo::isTriviallyReMaterializable. This way, all places that
need to know whether an instruction is rematerializable will get the
same answer.

This enables the useful parts of the aggressive-remat option by
default -- using AliasAnalysis to determine whether a memory location
is invariant, and removes the questionable parts -- rematting operations
with virtual register inputs that may not be live everywhere.

llvm-svn: 83687
 2009-10-09 23:27:56 +00:00
Devang Patel
c97c44b584 Extract scope information from the variable itself, instead of relying on alloca or llvm.dbg.declare location. 
While recording beginning of a function, use scope info from the first location entry instead of just relying on first location entry itself.

llvm-svn: 83684
 2009-10-09 22:42:28 +00:00
Jeffrey Yasskin
7edab17bef ExecutionEngine::clearGlobalMappingsFromModule failed to remove reverse 
mappings, which could cause errors and assert-failures.  This patch fixes that,
adds a test, and refactors the global-mapping-removal code into a single place.

llvm-svn: 83678
 2009-10-09 22:10:27 +00:00
Dan Gohman
14aaff93fc Add a const qualifier. 
llvm-svn: 83677
 2009-10-09 22:09:05 +00:00
Dale Johannesen
7691b73da0 Use names instead of numbers for some of the magic 
constants used in inlining heuristics (especially
those used in more than one file).  No functional change.

llvm-svn: 83675
 2009-10-09 21:42:02 +00:00
Kevin Enderby
430e05312d Added another bit of the ARM target assembler to llvm-mc to parse register 
lists.  Changed ARMAsmParser::MatchRegisterName to return -1 instead of 0 on
errors so 0-15 values could be returned as register numbers.  Also added the
rest of the arm register names to the currently hacked up version to allow more
testing.  Some changes to ARMAsmParser::ParseOperand to give different errors
for things not yet supported and some additions to the hacked
ARMAsmParser::MatchInstruction to allow more testing for now.

llvm-svn: 83673
 2009-10-09 21:12:28 +00:00
Dan Gohman
3005d6bf9f isTriviallyReMaterializable checks the 
TargetInstrDesc::isRematerializable flag, so it isn't necessary to do
this check in its callers.

llvm-svn: 83671
 2009-10-09 21:02:10 +00:00
Dan Gohman
f2ae9c6220 Fix the x86 test-shrink optimization so that it doesn't shrink comparisons 
when one of the bits being tested would end up being the sign bit in the
narrower type, and a signed comparison is being performed, since this would
change the result of the signed comparison. This fixes PR5132.

llvm-svn: 83670
 2009-10-09 20:35:19 +00:00
Bob Wilson
011e458c11 Merge a bunch of NEON tests into larger files so they run faster. 
llvm-svn: 83667
 2009-10-09 20:20:54 +00:00
Dan Gohman
4fe1a982ed Add basic infrastructure and x86 support for preserving MachineMemOperand 
information when unfolding memory references.

llvm-svn: 83656
 2009-10-09 18:10:05 +00:00
Devang Patel
a772046766 Check invalid debug info for enums. This may happen when underlyng enum is optimized away. Eventually DwarfChecker will clean this up during llvm verification stage. 
llvm-svn: 83655
 2009-10-09 17:51:49 +00:00
Jim Grosbach
809d1bfdd3 when previous scratch register is killed, flag the value as no longer tracking 
llvm-svn: 83653
 2009-10-09 17:33:33 +00:00
Bob Wilson
de71518edb Convert some ARM tests with lots of greps to use FileCheck. 
llvm-svn: 83651
 2009-10-09 17:20:46 +00:00
Dan Gohman
731afb3b6e Revert r83606 and add comments explaining why it isn't safe. 
llvm-svn: 83649
 2009-10-09 16:35:06 +00:00
Nicolas Geoffray
a9998e2133 As it turns out, the bug fixes in GC codegen did not make it 
to llvm-2.6. Remove the precise garbage collection feature.

llvm-svn: 83638
 2009-10-09 13:17:57 +00:00
Nicolas Geoffray
aecce285aa 80-columns! 
llvm-svn: 83628
 2009-10-09 10:17:14 +00:00
Nicolas Geoffray
672319a893 Add initial information on VMKit. 
llvm-svn: 83627
 2009-10-09 10:13:08 +00:00
Chris Lattner
623acb737f more random updates. 
llvm-svn: 83625
 2009-10-09 06:36:25 +00:00
Evan Cheng
ec853b9ba5 Give Dan and my recent changes, machine LICM is now code size neutral. 
llvm-svn: 83624
 2009-10-09 06:31:25 +00:00
Chris Lattner
7eb545c437 checkpoint. 
llvm-svn: 83623
 2009-10-09 06:24:25 +00:00
Evan Cheng
439044f330 Fix a logic error that caused non-rematable loop invariants loads to be licm'ed out of loop. 
llvm-svn: 83622
 2009-10-09 06:21:52 +00:00
Chris Lattner
aa8ee121c3 checkpoint. 
llvm-svn: 83621
 2009-10-09 05:55:04 +00:00
Mikhail Glushenkov
a3577841cf Slight rewording. 
llvm-svn: 83620
 2009-10-09 05:45:38 +00:00
Mikhail Glushenkov
ec9baa8e47 Omit the 'out_file_index != -1' check when possible. 
llvm-svn: 83619
 2009-10-09 05:45:21 +00:00
Mikhail Glushenkov
1b7df9c598 Use llvm-as only for compiling .ll -> .bc. 
llc can compile .ll files directly these days.

llvm-svn: 83618
 2009-10-09 05:45:01 +00:00
Bob Wilson
d48cacb92f Commit one last NEON test to use FileCheck. That's all of them now! 
llvm-svn: 83617
 2009-10-09 05:31:56 +00:00
Bob Wilson
a8746e6bd1 Convert more NEON tests to use FileCheck. 
llvm-svn: 83616
 2009-10-09 05:14:48 +00:00
Chris Lattner
581a88dfe2 update clang section. 
llvm-svn: 83615
 2009-10-09 05:01:15 +00:00
Mikhail Glushenkov
59c2ae922b Raise the limit on built-in plugins in llvmc to 10. 
llvm-svn: 83614
 2009-10-09 04:15:52 +00:00
Mikhail Glushenkov
684fcbea02 Reconfigure automatically when Base.td.in is changed. 
Thanks to Chris for heads-up!

llvm-svn: 83613
 2009-10-09 02:40:01 +00:00
Evan Cheng
b1f6b5fccc Reset kill markers after live interval is reconstructed. 
llvm-svn: 83608
 2009-10-09 01:17:11 +00:00
Evan Cheng
f852810de8 Indentation. 
llvm-svn: 83607
 2009-10-09 00:57:38 +00:00
Dan Gohman
e81a040ce7 Preserve HasNSW and HasNUW when constructing SCEVs for Add and Mul 
instructions.

llvm-svn: 83606
 2009-10-09 00:41:22 +00:00
Dale Johannesen
10c870b46f When considering whether to inline Callee into Caller, 
and that will make Caller too big to inline, see if it
might be better to inline Caller into its callers instead.
This situation is described in PR 2973, although I haven't
tried the specific case in SPASS.

llvm-svn: 83602
 2009-10-09 00:11:32 +00:00
Dan Gohman
4cdd530887 Add the ability to track HasNSW and HasNUW on more kinds of SCEV expressions. 
llvm-svn: 83601
 2009-10-09 00:10:36 +00:00
Bob Wilson
8092fef09a Add codegen support for NEON vst4lane intrinsics with 128-bit vectors. 
llvm-svn: 83600
 2009-10-09 00:01:36 +00:00
Bob Wilson
979cb24a81 Add codegen support for NEON vst3lane intrinsics with 128-bit vectors. 
llvm-svn: 83598
 2009-10-08 23:51:31 +00:00