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11489 Commits

Author SHA1 Message Date
Chris Lattner
a1f4042939 improve portability to systems that don't have round, patch by 
Evzen Muller!

llvm-svn: 103877
 2010-05-15 17:11:55 +00:00
Jakob Stoklund Olesen
420d93c484 Add reg_nodbg_iterator 
llvm-svn: 103856
 2010-05-15 02:52:58 +00:00
Evan Cheng
85497bd415 Allow TargetLowering::getRegClassFor() to be called on illegal types. Also 
allow target to override it in order to map register classes to illegal
but synthesizable types. e.g. v4i64, v8i64 for ARM / NEON.

llvm-svn: 103854
 2010-05-15 02:18:07 +00:00
Evan Cheng
0a651c3314 Teach two-address pass to do some coalescing while eliminating REG_SEQUENCE 
instructions.

e.g.
%reg1026<def> = VLDMQ %reg1025<kill>, 260, pred:14, pred:%reg0
%reg1027<def> = EXTRACT_SUBREG %reg1026, 6
%reg1028<def> = EXTRACT_SUBREG %reg1026<kill>, 5
...
%reg1029<def> = REG_SEQUENCE %reg1028<kill>, 5, %reg1027<kill>, 6, %reg1028, 7, %reg1027, 8, %reg1028, 9, %reg1027, 10, %reg1030<kill>, 11, %reg1032<kill>, 12

After REG_SEQUENCE is eliminated, we are left with:

%reg1026<def> = VLDMQ %reg1025<kill>, 260, pred:14, pred:%reg0
%reg1029:6<def> = EXTRACT_SUBREG %reg1026, 6
%reg1029:5<def> = EXTRACT_SUBREG %reg1026<kill>, 5

The regular coalescer will not be able to coalesce reg1026 and reg1029 because it doesn't
know how to combine sub-register indices 5 and 6. Now 2-address pass will consult the
target whether sub-registers 5 and 6 of reg1026 can be combined to into a larger
sub-register (or combined to be reg1026 itself as is the case here). If it is possible, 
it will be able to replace references of reg1026 with reg1029 + the larger sub-register
index.

llvm-svn: 103835
 2010-05-14 23:21:14 +00:00
Dan Gohman
2859ef1a1b Add some comments about undef. 
llvm-svn: 103834
 2010-05-14 23:01:02 +00:00
Bill Wendling
e346a38ed4 Rename "HasCalls" in MachineFrameInfo to "AdjustsStack" to better describe what 
the variable actually tracks.

N.B., several back-ends are using "HasCalls" as being synonymous for something
that adjusts the stack. This isn't 100% correct and should be looked into.

llvm-svn: 103802
 2010-05-14 21:14:32 +00:00
Devang Patel
2b99c27e47 Add support to preserve type info for the variables that are removed by the optimizer. 
llvm-svn: 103798
 2010-05-14 21:01:35 +00:00
Dan Gohman
6815a4c74d Use PassManagerBase, to give clients the option of using either 
FunctionPassManager or regular PassManager.

llvm-svn: 103773
 2010-05-14 15:35:10 +00:00
Dan Gohman
9383d0f144 Add an isNodeHidden to the graph traits, to support definition of 
subgraph views.

llvm-svn: 103772
 2010-05-14 15:29:31 +00:00
Evan Cheng
ec0d7e6cf2 Get rid of the bit twiddling to read / set OpActions and ValueTypeActions. The small saving in memory isn't worth the increase in runtime and code complexity in my opinion. 
llvm-svn: 103768
 2010-05-14 07:37:40 +00:00
Eric Christopher
ebea91f168 Add AsmParser support for darwin tbss directive. 
Nothing uses this yet.

llvm-svn: 103757
 2010-05-14 01:50:28 +00:00
Nick Lewycky
aeb998db39 Fix typo. 
llvm-svn: 103755
 2010-05-14 01:02:48 +00:00
Daniel Dunbar
7fee3c7b28 MC: Switch to completely lazy layout. 
- The eliminates the last major algorithmic problem with MC.

llvm-svn: 103754
 2010-05-14 00:51:14 +00:00
Daniel Dunbar
66c2ccec2d MC: Extend MCAsmLayout to explicitly track which fragments have been layed out, and enforce several invariants to LayoutFragment to ensure we only do layout in a sensible order. 
llvm-svn: 103753
 2010-05-14 00:37:21 +00:00
Daniel Dunbar
11467b2eaa MC: Switch MCFragment to storing the layout order index, not its index in the file. 
llvm-svn: 103751
 2010-05-14 00:37:14 +00:00
Daniel Dunbar
b2a98e0a16 MC: Change LayoutSection() to only do the section initializiation. 
Also, elimminate MCAsmLayout::set*, which are no longer needed.

llvm-svn: 103750
 2010-05-14 00:37:11 +00:00
Evan Cheng
775549c9e7 Adding a v8i64 512-bit vector type. This will be used to model ARM NEON intrinsics which translate into a pair of vld / vst instructions that can load / store 8 consecutive 64-bit (D) registers. 
llvm-svn: 103746
 2010-05-13 23:55:47 +00:00
Evan Cheng
5e115a09ec Eliminate use of magic numbers to access OpActions. It also has the effect of allowing more than 31 scalar value types. MAX_ALLOWED_VALUETYPE had already been updated to 64 a while back. 
llvm-svn: 103743
 2010-05-13 23:25:21 +00:00
Evan Cheng
f2572ea73b Fix up LoadExtActions, TruncStoreActions, and IndexedModeActions representation and setter and getter's so they will continue to work if the number of scalar ValueType's exceeds 31. 
llvm-svn: 103742
 2010-05-13 23:01:26 +00:00
Daniel Dunbar
86825a9719 MC: Move Layout{Fragment,Section} into MCAsmLayout, and add LayoutFile(). 
llvm-svn: 103738
 2010-05-13 20:40:12 +00:00
Dan Gohman
33e9c347bf Teach MachineLICM and MachineSink how to clear kill flags conservatively 
when they move instructions.

llvm-svn: 103737
 2010-05-13 20:34:42 +00:00
Evan Cheng
fd47525512 80 col violation. 
llvm-svn: 103733
 2010-05-13 20:14:58 +00:00
Dan Gohman
223379b3a9 Add a utility function for conservatively clearing kill flags, and make 
use of it in MachineCSE.

llvm-svn: 103726
 2010-05-13 19:24:00 +00:00
Daniel Dunbar
b142c00db4 MC: Factor out MCAssembler::ComputeFragmentSize. 
llvm-svn: 103724
 2010-05-13 18:35:06 +00:00
Daniel Dunbar
10ef3afee3 Fix const ilist_node::get{Prev,Next}Node() to actually compile. Picky, picky. 
llvm-svn: 103723
 2010-05-13 18:35:02 +00:00
Daniel Dunbar
5a601f9e09 MC: Add section layout order indices to MCSectionData. 
llvm-svn: 103715
 2010-05-13 15:17:26 +00:00
Daniel Dunbar
5ef1bcbb97 MC: Add MCAsmLayout::FragmentReplaced() helper function. 
llvm-svn: 103709
 2010-05-13 08:43:31 +00:00
Daniel Dunbar
561f55c1af MC: Eliminate MCSectionData::{,Address,File}Size, which can now be computed by 
utility functions.

llvm-svn: 103695
 2010-05-13 03:19:50 +00:00
Daniel Dunbar
3fc379596a MC: Add MCAlignFragment::OnlyAlignAddress bit. This is a bit of magic that says the align fragment shouldn't contribute to the logical section size, it is will be used for cleaning up the code to handle section alignment. 
llvm-svn: 103690
 2010-05-13 01:10:26 +00:00
Daniel Dunbar
ec3a2ac5ed MC: Add MCSectionData::AddressSize, which is the size of the address space consumed by the section. This can differ from both the section logical size, and the section size on disk (although the current code handles this without making an explicit distinction). 
llvm-svn: 103689
 2010-05-13 01:10:22 +00:00
Daniel Dunbar
de7caed021 MC: Move MCAlignFragment::EmitNops value out of the constructor. 
llvm-svn: 103665
 2010-05-12 22:56:23 +00:00
Daniel Dunbar
cf11e2a0a5 MC: Eliminate MCZeroFillFragment, it is no longer needed. 
llvm-svn: 103664
 2010-05-12 22:51:38 +00:00
Daniel Dunbar
08bcc3a6fc MC: Switch MCFillFragment to storing total fill size instead of a count. This allows using ValueSize==0 to represent a virtual fill. 
llvm-svn: 103662
 2010-05-12 22:51:32 +00:00
Daniel Dunbar
d3f60794d8 MC: Drop support for alignment in ZeroFill fragment, we can just use 
MCAlignFragments for this.

llvm-svn: 103661
 2010-05-12 22:51:27 +00:00
Nick Lewycky
b5bf752087 Clear CachedFunctionInfo upon Pass::releaseMemory. Because ValueMap will abort 
on RAUW of functions, this is a correctness issue instead of a mere memory
usage problem.


No testcase until the new MergeFunctions can land.

llvm-svn: 103653
 2010-05-12 21:48:15 +00:00
Daniel Dunbar
6a495507e5 MC: Factor out MCAssembler::LayoutFragment 
llvm-svn: 103649
 2010-05-12 21:35:25 +00:00
Daniel Dunbar
78bb7f4dc9 ADT: Add ilist_node::get{Prev,Next}Node, which return the adjacent node or null. 
- This provides a convenient alternative to using something llvm::prior or
   manual iterator access, for example::

    if (T *Prev = foo->getPrevNode())
      ...

   instead of::

     iterator it(foo);
     if (it != begin()) {
       --it;
       ... 
     }

 - Chris, please review.

llvm-svn: 103647
 2010-05-12 21:35:19 +00:00
Daniel Dunbar
7b72c3c7a0 MC: Simplify LayoutSection to just take the index of the section to layout. 
llvm-svn: 103627
 2010-05-12 17:56:47 +00:00
Daniel Dunbar
adca38558e MC: Track section layout order explicitly, and use to simplify. 
llvm-svn: 103616
 2010-05-12 15:42:59 +00:00
Rafael Espindola
3efc86abab Add support for movi32 of global values to the new (MC) asm printer. 
llvm-svn: 103576
 2010-05-12 05:16:34 +00:00
Nathan Jeffords
2c2c69c075 Added a trivial function to modify the flags field of MCSymbolData class. The function takes the value and a mask, and clears the mask bits before applying the value. 
llvm-svn: 103534
 2010-05-12 00:52:54 +00:00
Daniel Dunbar
e5a79692cf MC/Mach-O/x86_64: Add a new hook for checking whether a particular section can 
be diced into atoms, and adjust getAtom() to take this into account.
 - This fixes relocations to symbols in fixed size literal sections, for
   example.

llvm-svn: 103532
 2010-05-12 00:38:17 +00:00
Dan Gohman
03e407ed83 Add initial kill flag support to FastISel. 
llvm-svn: 103529
 2010-05-11 23:54:07 +00:00
Jakob Stoklund Olesen
e27902ac68 Simplify the tracking of used physregs to a bulk bitor followed by a transitive 
closure after allocating all blocks.

Add a few more test cases for -regalloc=fast.

llvm-svn: 103500
 2010-05-11 20:30:28 +00:00
Duncan Sands
7d5e4152c3 I got tired of VISIBILITY_HIDDEN colliding with the gcc enum. Rename it 
to LLVM_LIBRARY_VISIBILITY and introduce LLVM_GLOBAL_VISIBILITY, which is
the opposite, for future use by dragonegg.

llvm-svn: 103495
 2010-05-11 20:16:09 +00:00
Dan Gohman
5f389dacab Remove the "WantsWholeFile" concept, as it's no longer needed. CBE 
and the others use the regular addPassesToEmitFile hook now, and
llc no longer needs a bunch of redundant code to handle the
whole-file case.

llvm-svn: 103492
 2010-05-11 19:57:55 +00:00
Dan Gohman
ca2df906ae Trim #includes and forward declarations. 
llvm-svn: 103489
 2010-05-11 19:11:43 +00:00
Dan Gohman
259488cf67 Fix a comment. 
llvm-svn: 103483
 2010-05-11 18:03:41 +00:00
Dan Gohman
fb6f4da0e0 Implement a bunch more TargetSelectionDAGInfo infrastructure. 
Move EmitTargetCodeForMemcpy, EmitTargetCodeForMemset, and
EmitTargetCodeForMemmove out of TargetLowering and into
SelectionDAGInfo to exercise this.

llvm-svn: 103481
 2010-05-11 17:31:57 +00:00
Daniel Dunbar
7670f69e42 MC/Mach-O x86_64: Switch to using fragment atom symbol. 
- This eliminates getAtomForAddress() (which was a linear search) and
   simplifies getAtom().
 - This also fixes some correctness problems where local labels at the same
   address as non-local labels could be assigned to the wrong atom.

llvm-svn: 103480
 2010-05-11 17:22:50 +00:00