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10340 Commits

Author SHA1 Message Date
Dan Gohman
8859ab786b DAGCombine (shl (anyext x, c)) to (anyext (shl x, c)) if the high bits 
are not demanded. This often allows the anyext to be folded away.

llvm-svn: 109242
 2010-07-23 18:03:30 +00:00
Dan Gohman
b5a26419b8 Make SDNode::dump() print a newline at the end. 
llvm-svn: 109234
 2010-07-23 16:37:47 +00:00
Eric Christopher
308237108d 80-col. 
llvm-svn: 109205
 2010-07-23 01:05:59 +00:00
Chris Lattner
65ad913bec remove the JIT "NeedsExactSize" feature and supporting logic. 
llvm-svn: 109167
 2010-07-22 21:17:55 +00:00
Gabor Greif
feb96f2df2 keep in 80 cols 
llvm-svn: 109122
 2010-07-22 17:18:03 +00:00
Gabor Greif
96a9f8c7c6 mass elimination of reliance on automatic iterator dereferencing 
llvm-svn: 109103
 2010-07-22 13:36:47 +00:00
Gabor Greif
a7509fca78 undo 80 column trespassing I caused 
llvm-svn: 109092
 2010-07-22 10:37:47 +00:00
Evan Cheng
c47b23ef06 Re-apply r109079 with fix. 
llvm-svn: 109083
 2010-07-22 06:24:48 +00:00
Owen Anderson
2553a4be1a Revert r109079, which broke a lot of CodeGen tests. 
llvm-svn: 109082
 2010-07-22 06:01:28 +00:00
Reid Kleckner
3a876ca187 Initial modifications to MCAssembler and TargetMachine for the MCJIT. 
Patch by Olivier Meurant!

llvm-svn: 109080
 2010-07-22 05:58:53 +00:00
Evan Cheng
f1ca10c69f Initialize RegLimit only when register pressure is being tracked. 
llvm-svn: 109079
 2010-07-22 05:18:41 +00:00
Evan Cheng
5aa6a25102 More register pressure aware scheduling work. 
llvm-svn: 109064
 2010-07-21 23:53:58 +00:00
Jim Grosbach
489d758ea8 For ARM/Darwin, add a dwarf entry indicating whether a function is arm or thumb 
rdar://8202967

llvm-svn: 109057
 2010-07-21 23:03:52 +00:00
Owen Anderson
f8addbb0a1 Fix batch of converting RegisterPass<> to INTIALIZE_PASS(). 
llvm-svn: 109045
 2010-07-21 22:09:45 +00:00
Jim Grosbach
6b4f9f4c14 80 column and trailing whitespace cleanup 
llvm-svn: 109037
 2010-07-21 21:21:52 +00:00
Dan Gohman
fc3ee085a0 Disallow null as a named metadata operand. 
Make MDNode::destroy private.
Fix the one thing that used MDNode::destroy, outside of MDNode itself.

One should never delete or destroy an MDNode explicitly. MDNodes
implicitly go away when there are no references to them (implementation
details aside).

llvm-svn: 109028
 2010-07-21 18:54:18 +00:00
Lang Hames
26319a802c Changed OStream templates to functions on raw_ostream, removed the unused "renderWarnings" function. 
llvm-svn: 109003
 2010-07-21 09:02:06 +00:00
Evan Cheng
df725c25dd Teach bottom up pre-ra scheduler to track register pressure. Work in progress. 
llvm-svn: 108991
 2010-07-21 06:09:07 +00:00
Jakob Stoklund Olesen
2e78d6ed2e Change the createSpiller interface to take a MachineFunctionPass argument. 
The spillers can pluck the analyses they need from the pass reference.

Switch some never-null pointers to references.

llvm-svn: 108969
 2010-07-20 23:50:15 +00:00
Jakob Stoklund Olesen
dcf78c06f8 Implement loop splitting analysis. 
Determine which loop exit blocks need a 'pre-exit' block inserted.
Recognize when this would be impossible.

llvm-svn: 108941
 2010-07-20 21:46:58 +00:00
Dale Johannesen
6589cf8e0d Fix test for switch statements and increase 
threshold a bit per experimentation.

llvm-svn: 108935
 2010-07-20 21:29:12 +00:00
Jakob Stoklund Olesen
1101d2ae50 Appease the colonials. 
llvm-svn: 108845
 2010-07-20 16:12:37 +00:00
Jakob Stoklund Olesen
03e14d78cd Beginning SplitKit - utility classes for live range splitting. 
This is a work in progress. So far we have some basic loop analysis to help
determine where it is useful to split a live range around a loop.

The actual loop splitting code from Splitter.cpp is also going to move in here.

llvm-svn: 108842
 2010-07-20 15:41:07 +00:00
Lang Hames
d3df7b7f67 Updated css classes for the pressure table legend. 
llvm-svn: 108839
 2010-07-20 14:35:55 +00:00
Lang Hames
66db5d37ee Oops - I tables render poorly in Chrome without this explicit height specification. 
llvm-svn: 108824
 2010-07-20 10:29:46 +00:00
Lang Hames
fa6f0cfc5c Use run-length encoding to represent identical adjacent cells in the pressure 
and interval table. Reduces output HTML file sizes by ~80% in my test cases.

Also fix access of private member type by << operator.

llvm-svn: 108823
 2010-07-20 10:18:54 +00:00
Lang Hames
33ef587b33 Added support for turning HTML indentation on and off (indentation off by default). 
Reduces output file size ~20% on my test cases.

llvm-svn: 108822
 2010-07-20 09:13:29 +00:00
Lang Hames
7be6158391 Switched to rendering after allocation (but before rewriting) in PBQP. 
Updated renderer to use allocation information from VirtRegMap (if
available) to render spilled intervals differently.

llvm-svn: 108815
 2010-07-20 07:41:44 +00:00
Dale Johannesen
6b9a191b08 Don't hoist things out of a large switch inside a 
loop, for the reasons in the comments.  This is a
major win on 253.perlbmk on ARM Darwin.  I expect it
to be a good heuristic in general, but it's possible
some things will regress; I'll be watching.
7940152.

llvm-svn: 108792
 2010-07-20 00:50:13 +00:00
Stuart Hastings
587ed4918c Correct line info for declarations/definitions. Radar 8063111. 
llvm-svn: 108784
 2010-07-19 23:56:30 +00:00
Devang Patel
3b57155acd Fix memory leak reported by valgrind. 
Do not visit operands of old instruction. Visit all operands of new instruction.

llvm-svn: 108767
 2010-07-19 23:25:39 +00:00
Dan Gohman
28f747a608 After a custom inserter, in a block which has constant instructions, 
update the current basic block in addition to the current insert
position, so that they remain consistent. This fixes rdar://8204072.

llvm-svn: 108765
 2010-07-19 22:48:56 +00:00
Evan Cheng
b2ad0066f5 ARM has to provide its own TargetLowering::findRepresentativeClass because its scalar floating point registers alias its vector registers. 
llvm-svn: 108761
 2010-07-19 22:15:08 +00:00
Evan Cheng
cecae7f56c Teach computeRegisterProperties() to compute "representative" register class for legal value types. A "representative" register class is the largest legal super-reg register class for a value type. e.g. On i386, GR32 is the rep register class for i8 / i16 / i32; on x86_64 it would be GR64. 
This property will be used by the register pressure tracking instruction scheduler.

llvm-svn: 108735
 2010-07-19 18:47:01 +00:00
Jakob Stoklund Olesen
186d86d916 Spillers may alter MachineLoopInfo when breaking critical edges, so make it 
non-const.

llvm-svn: 108734
 2010-07-19 18:41:20 +00:00
Devang Patel
e401bfe168 Fix PR 7662. 
Do not try to insert local variable info to a DIE used for function declaration.

llvm-svn: 108731
 2010-07-19 17:53:55 +00:00
Benjamin Kramer
67f13ffdc2 Update CMake build. 
llvm-svn: 108700
 2010-07-19 15:37:03 +00:00
Lang Hames
304ecc0487 Render MachineFunctions to HTML pages, with options to render register 
pressure estimates and liveness alongside.

Still experimental.

llvm-svn: 108698
 2010-07-19 15:22:28 +00:00
Owen Anderson
acd445be06 Remove r108639 now that it is handled by InstCombine instead. 
llvm-svn: 108688
 2010-07-19 08:10:24 +00:00
Daniel Dunbar
150021561c Target: Give the TargetAsmParser access to the TargetMachine. 
- Unfortunate, but necessary for now to handle subtarget instruction matching. Eventually we should factor out the lower level target machine information so we don't need to do this.

llvm-svn: 108664
 2010-07-19 00:33:49 +00:00
Daniel Dunbar
4dc7255379 MC: Move several clients to using AsmParser constructor function. 
llvm-svn: 108645
 2010-07-18 18:31:33 +00:00
Douglas Gregor
083ff2c681 Fix struct/class mismatch 
llvm-svn: 108642
 2010-07-18 11:47:56 +00:00
Owen Anderson
650babd396 Add a DAGCombine xform to fold away redundant float->double->float conversions around sqrt instructions. 
I am assured by people more knowledgeable than me that there are no rounding issues in eliminating this.

This fixed <rdar://problem/8197504>.

llvm-svn: 108639
 2010-07-18 08:47:54 +00:00
Lang Hames
9b05163138 Added -pbqp-pre-coalescing flag to PBQP. If enabled this will cause PBQP to require 
LoopSplitter be run prior to register allocation.

Entirely for testing purposes at the moment.

llvm-svn: 108634
 2010-07-18 00:57:59 +00:00
Bill Wendling
72c0967ce7 Use isPrologLabel() instead of checking the opcode directly. 
llvm-svn: 108628
 2010-07-17 19:18:44 +00:00
Zhongxing Xu
efd94e6909 update CMakeLists.txt 
llvm-svn: 108620
 2010-07-17 12:12:42 +00:00
Lang Hames
611f0fb043 Removed unused inRange variable. 
llvm-svn: 108618
 2010-07-17 11:43:07 +00:00
Lang Hames
48638f63ba LoopSplitter - intended to split live intervals over loop boundaries. 
Still very much under development. Comments and fixes will be forthcoming.

(This commit includes some small tweaks to LiveIntervals & LoopInfo to support the splitter)

llvm-svn: 108615
 2010-07-17 07:34:01 +00:00
Lang Hames
d229cc3cf3 Iterating over sets of pointers in a heuristic was a bad idea. Switching 
any command line paramater changed the register allocation produced by
PBQP.

Turns out variety is not the spice of life.

Fixed some comparators, added others. All good now.

llvm-svn: 108613
 2010-07-17 06:31:41 +00:00
Eric Christopher
b397b001b9 Propagate alloca alignment information via variable size object frame 
information.

No functional change yet.

llvm-svn: 108583
 2010-07-17 00:28:22 +00:00