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Author SHA1 Message Date
Bill Wendling
da1364d669 Generate a VTBL instruction instead of a series of loads and stores when we 
can. As Nate pointed out, VTBL isn't super performant, but it *has* to be better
than this:

_shuf:
@ BB#0:       @ %entry
  push        {r4, r7, lr}
  add         r7, sp, #4
  sub         sp, #12
  mov         r4, sp
  bic         r4, r4, #7
  mov         sp, r4
  mov         r2, sp
  vmov        d16, r0, r1
  orr         r0, r2, #6
  orr         r3, r2, #7
  vst1.8      {d16[0]}, [r3]
  vst1.8      {d16[5]}, [r0]
  subs        r4, r7, #4
  orr         r0, r2, #5
  vst1.8      {d16[4]}, [r0]
  orr         r0, r2, #4
  vst1.8      {d16[4]}, [r0]
  orr         r0, r2, #3
  vst1.8      {d16[0]}, [r0]
  orr         r0, r2, #2
  vst1.8      {d16[2]}, [r0]
  orr         r0, r2, #1
  vst1.8      {d16[1]}, [r0]
  vst1.8      {d16[3]}, [r2]
  vldr.64     d16, [sp]
  vmov        r0, r1, d16
  mov         sp, r4
  pop         {r4, r7, pc}

The "illegal" testcase in vext.ll is no longer illegal.
<rdar://problem/9078775>

llvm-svn: 127630
 2011-03-14 23:02:38 +00:00
John McCall
cb1d6e9690 Version N of the llvm_unreachable patch: VC++ doesn't recognize that abort() 
doesn't return, so just go back to using the old runtime function instead
of trying to use abort() when __builtin_unreachable (or an equivalent) isn't
supported.

llvm-svn: 127629
 2011-03-14 22:41:50 +00:00
Renato Golin
4c9d4ab277 This patch is a big refactoring of llvm-diff. It doesn't add new features, but it re-organizes the old features, so I can insert the MetadataEngine to use the same infrastructure. 
llvm-svn: 127627
 2011-03-14 22:22:46 +00:00
Jan Sjödin
d6b1fb373b Check that the AsmParser exists for the native target to enable initialization 
function.

llvm-svn: 127626
 2011-03-14 22:12:35 +00:00
Eric Christopher
8180806e0f Fix this test up a bit. 
llvm-svn: 127621
 2011-03-14 21:05:21 +00:00
Jim Grosbach
560a7bf8b1 Trailing whitespace. 
llvm-svn: 127620
 2011-03-14 20:59:06 +00:00
Owen Anderson
49965661d5 Ignore isCodeGenOnly instructions when generating diassembly tables. 
llvm-svn: 127619
 2011-03-14 20:58:49 +00:00
Jakob Stoklund Olesen
29a9539e7f Place context in member variables instead of passing around pointers. 
Use the opportunity to get rid of the trailing underscore variable names.

llvm-svn: 127618
 2011-03-14 20:57:14 +00:00
John McCall
952cbb2634 Okay, some compilers complain if you provide the exception-specification 
where none was before.  Just don't declare it and hope it's declared
in every translation unit that needs it.

llvm-svn: 127612
 2011-03-14 20:20:29 +00:00
John McCall
46f704310d Fix the exception-specification of abort() when declaring it in C++. 
llvm-svn: 127610
 2011-03-14 20:10:50 +00:00
John McCall
fe51bf5de7 Make llvm_unreachable evaluate to __builtin_unreachable() in -Asserts 
builds, which was the apparent consensus of PR8973 and llvmdev.

llvm-svn: 127608
 2011-03-14 20:01:21 +00:00
Jakob Stoklund Olesen
da1afc2d80 Rename members to match LLVM naming conventions more closely. 
Remove the unused reserved_ bit vector, no functional change intended.

This doesn't break 'svn blame', this file really is all my fault.

llvm-svn: 127607
 2011-03-14 19:56:43 +00:00
Jim Grosbach
6ee5aef028 Remove some dead patterns. 
llvm-svn: 127601
 2011-03-14 18:34:35 +00:00
Evan Cheng
50f2d406ec BIT_CONVERT has been renamed to BITCAST. 
llvm-svn: 127600
 2011-03-14 18:19:52 +00:00
Evan Cheng
cb70b9e80b Minor optimization. sign-ext/anyext of undef is still undef. 
llvm-svn: 127598
 2011-03-14 18:15:55 +00:00
Evan Cheng
fbb846289a Indentation. 
llvm-svn: 127595
 2011-03-14 18:02:30 +00:00
Andrew Trick
da253e79f0 Negating a recurrence preserves no-self-wrap. 
llvm-svn: 127593
 2011-03-14 17:38:54 +00:00
Jim Grosbach
973ab94013 Trailing whitespace. 
llvm-svn: 127592
 2011-03-14 17:32:49 +00:00
Andrew Trick
dab71254b6 HowFarToZero can compute a trip count as long as the recurrence has no-self-wrap. 
llvm-svn: 127591
 2011-03-14 17:28:02 +00:00
Andrew Trick
5d45b563c5 Added SCEV::NoWrapFlags to manage unsigned, signed, and self wrap 
properties.
Added the self-wrap flag for SCEV::AddRecExpr.
A slew of temporary FIXMEs indicate the intention of the no-self-wrap flag
without changing behavior in this revision.

llvm-svn: 127590
 2011-03-14 16:50:06 +00:00
Andrew Trick
e0442babf1 whitespace 
llvm-svn: 127589
 2011-03-14 16:48:10 +00:00
Justin Holewinski
a2f7c8557c PTX: Emit global arrays with proper sizes 
- Emit all arrays as type .b8 and proper sizes in bytes to conform
  to the output of nvcc

llvm-svn: 127584
 2011-03-14 15:40:11 +00:00
Justin Holewinski
995d10cfea PTX: Add support for sqrt/sin/cos intrinsics 
llvm-svn: 127578
 2011-03-14 14:09:33 +00:00
Che-Liang Chiou
6ff0aa8ab3 ptx: add set.p instruction and related changes to predicate execution 
llvm-svn: 127577
 2011-03-14 11:26:01 +00:00
Mikhail Glushenkov
5a7b935681 Emacs mode string. 
llvm-svn: 127576
 2011-03-14 04:20:57 +00:00
Francois Pichet
0e434150f9 Correct small comment order typo. 
llvm-svn: 127575
 2011-03-14 02:30:32 +00:00
Jin-Gu Kang
9d52ff5473 This case is solved by Scalar Replacement of Aggregates (DT) and 
Early CSE pass so this patch reverts it to original source code.

llvm-svn: 127574
 2011-03-14 01:21:00 +00:00
Che-Liang Chiou
962612fc5c ptx: add basic support of predicate execution 
llvm-svn: 127569
 2011-03-13 17:26:00 +00:00
Jin-Gu Kang
5000ba8961 Add comment as following: 
load and store reference same memory location, the memory location
is represented by getelementptr with two uses (load and store) and
the getelementptr's base is alloca with single use. At this point,
instructions from alloca to store can be removed.
(this pattern is generated when bitfield is accessed.)
For example,
%u = alloca %struct.test, align 4               ; [#uses=1]
%0 = getelementptr inbounds %struct.test* %u, i32 0, i32 0;[#uses=2]
%1 = load i8* %0, align 4                       ; [#uses=1]
%2 = and i8 %1, -16                             ; [#uses=1]
%3 = or i8 %2, 5                                ; [#uses=1]
store i8 %3, i8* %0, align 4

llvm-svn: 127565
 2011-03-13 14:05:51 +00:00
Oscar Fuentes
d57f14037a LTO is not ready for Windows. 
llvm-svn: 127562
 2011-03-13 03:06:59 +00:00
Jakob Stoklund Olesen
7d23be25ab Now that we are deleting unused live intervals during allocation, pointers may be reused. 
Use the virtual register number as a cache tag instead. They are not reused.

llvm-svn: 127561
 2011-03-13 01:29:32 +00:00
Jakob Stoklund Olesen
2d87d5139b Tell the register allocator about new unused virtual registers. 
This allows the allocator to free any resources used by the virtual register,
including physical register assignments.

llvm-svn: 127560
 2011-03-13 01:23:11 +00:00
Oscar Fuentes
e747eabef1 Build EnhancedDisassembly as a shared library too. 
llvm-svn: 127555
 2011-03-12 22:01:47 +00:00
Oscar Fuentes
208de1fcc4 Build CompilerDriver library. 
llvm-svn: 127554
 2011-03-12 22:01:42 +00:00
Oscar Fuentes
a153a45c99 Build LTO as a static library too. 
llvm-svn: 127553
 2011-03-12 22:01:36 +00:00
Oscar Fuentes
eef24d34e6 Build LTO as a static library too. 
llvm-svn: 127549
 2011-03-12 17:32:30 +00:00
Benjamin Kramer
5986a24bae Teach ComputeMaskedBits about sub nsw. 
llvm-svn: 127548
 2011-03-12 17:18:11 +00:00
Oscar Fuentes
443b4dd3ca Whe we build a shared library, add its list of used libraries to the 
link command.

Fixed a pair of IF expressions too.

llvm-svn: 127546
 2011-03-12 16:48:54 +00:00
Oscar Fuentes
471e660c5a Update link components for llvm-dis and LTO. 
llvm-svn: 127545
 2011-03-12 16:48:49 +00:00
Duncan Sands
0514e10276 Speculatively revert commit 127478 (jsjodin) in an attempt to fix the 
llvm-gcc-i386-linux-selfhost and llvm-x86_64-linux-checks buildbots.
The original log entry:
Remove optimization emitting a reference insted of label difference, since
it can create more relocations. Removed isBaseAddressKnownZero method,
because it is no longer used.

llvm-svn: 127540
 2011-03-12 13:07:37 +00:00
Jin-Gu Kang
5e537a9449 This patch removes some of useless instructions generated by bitfield access. 
llvm-svn: 127539
 2011-03-12 12:18:44 +00:00
Jakob Stoklund Olesen
6d02ddbbc3 Include snippets in the live stack interval. 
llvm-svn: 127530
 2011-03-12 04:25:36 +00:00
Jakob Stoklund Olesen
1f9f236b8a Spill multiple registers at once. 
Live range splitting can create a number of small live ranges containing only a
single real use. Spill these small live ranges along with the large range they
are connected to with copies. This enables memory operand folding and maximizes
the spill to fill distance.

Work in progress with known bugs.

llvm-svn: 127529
 2011-03-12 04:17:20 +00:00
Sean Callanan
4f6e58ff09 Fixed the comparison operator for the enhanced 
disassembler's disassembler map.

llvm-svn: 127527
 2011-03-12 03:27:54 +00:00
Jakob Stoklund Olesen
925b25d53d That's it, I am declaring this a failure of the C++03 STL. 
There are too many compatibility problems with using mixed types in
std::upper_bound, and I don't want to spend 110 lines of boilerplate setting up
a call to a 10-line function. Binary search is not /that/ hard to implement
correctly.

I tried terminating the binary search with a linear search, but that actually
made the algorithm slower against my expectation. Most live intervals have less
than 4 segments. The early test against endIndex() does pay, and this version is
25% faster than plain std::upper_bound().

llvm-svn: 127522
 2011-03-12 01:50:35 +00:00
Eric Christopher
392d8f7d08 Saving files before committing is overrated. 
Add a RUN line to this test.

llvm-svn: 127520
 2011-03-12 01:36:23 +00:00
Eric Christopher
80a45901e0 Sometimes isPredicable lies to us and tells us we don't need the operands. 
Go ahead and add them on when we might want to use them and let
later passes remove them.

Fixes rdar://9118569

llvm-svn: 127518
 2011-03-12 01:09:29 +00:00
Jim Grosbach
a87f223848 Remove no-longer-correct special case for disasm of ARM BL instructions. 
llvm-svn: 127517
 2011-03-12 01:05:29 +00:00
Jim Grosbach
f7531e7697 Add FIXME. 
llvm-svn: 127516
 2011-03-12 00:51:00 +00:00
Jim Grosbach
555d910477 Pseudo-ize the ARM Darwin *r9 call instruction definitions. They're the same 
actual instruction as the non-Darwin defs, but have different call-clobber
semantics and so need separate patterns. They don't need to duplicate the
encoding information, however.

llvm-svn: 127515
 2011-03-12 00:45:26 +00:00