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Author SHA1 Message Date
Michael J. Spencer
c3e664a431 System/Win32/Path: Implement isSymLink. 
llvm-svn: 118681
 2010-11-10 15:05:39 +00:00
Duncan Sands
1ecf1f999e Simplify binary operations where one operand is a select instruction. 
The simplifications performed here never create new instructions, they
only return existing instructions (or a constant), and so are always a
win.  In theory they should transform (for example)
  %z = and i32 %x, %y
  %s = select i1 %cond, i32 %y, i32 %z
  %r = and i32 %x, %s
into
  %r = and i32 %x, y
but in practice they get into a fight with instcombine, and lose.
Unfortunately instcombine does a poor job in this case.  Nonetheless
I'm committing this transform to make it easier to discuss what to
do to make peace with instcombine.

llvm-svn: 118679
 2010-11-10 13:00:08 +00:00
NAKAMURA Takumi
84f55bb902 Win32/Process.inc: [PR8527] Process::FileDescriptorIsDisplayed(fd) should not check by FILE_TYPE_CHAR. It must be better to check it with Console API. 
The special file "NUL" is FILE_TYPE_CHAR with GetFileType(h). It was treated as display device and discarding output to NUL had failed. (eg. opt -o nul)

llvm-svn: 118678
 2010-11-10 08:37:47 +00:00
Duncan Sands
7f44d33a4c There is no EndPtr anymore - reinterpret the original comment in terms 
of InputData.

llvm-svn: 118677
 2010-11-10 07:46:36 +00:00
Jim Grosbach
4e3653e4e1 Update ARMConstantPoolValue to not use a modifier string. Use an explicit 
VariantKind marker to indicate the additional information necessary. Update
MC to handle the new Kinds. rdar://8647623

llvm-svn: 118671
 2010-11-10 03:26:07 +00:00
Bruno Cardoso Lopes
c911863e01 Add a test to the previous added clo instruction. Patch by Akira again 
llvm-svn: 118668
 2010-11-10 02:22:44 +00:00
Bruno Cardoso Lopes
2266e58196 Add clo instruction. Patch by Akira Hatanaka (ahatanaka@mips.com) with some minor tweaks 
llvm-svn: 118667
 2010-11-10 02:13:22 +00:00
Dale Johannesen
24a82bdec2 When checking that the necessary bits are zero in 
order to reduce ((x<<30)>>24) to x<<6, check the
correct bits.  PR 8547.

llvm-svn: 118665
 2010-11-10 01:30:56 +00:00
Bill Wendling
87c781b411 Emit a '!' if this is a "writeback" register or memory address. 
llvm-svn: 118662
 2010-11-10 01:07:54 +00:00
Jakob Stoklund Olesen
e259b04730 Simplify the LiveRangeEdit::canRematerializeAt() interface a bit. 
llvm-svn: 118661
 2010-11-10 01:05:12 +00:00
Dan Gohman
1571dfc883 Make ModRefBehavior a lattice. Use this to clean up AliasAnalysis 
chaining and simplify FunctionAttrs' GetModRefBehavior logic.

llvm-svn: 118660
 2010-11-10 01:02:18 +00:00
Matt Beaumont-Gay
993d07638e Rename a parameter to avoid confusion with a local variable 
llvm-svn: 118656
 2010-11-10 00:08:58 +00:00
Bill Wendling
0c082b811f Emit the warning about the register list not being in ascending order only once. 
llvm-svn: 118653
 2010-11-09 23:45:59 +00:00
Dale Johannesen
aa868ba745 Jim's recent fixes 118600, 118587, 118513 have made these work. 
llvm-svn: 118652
 2010-11-09 23:43:34 +00:00
Rafael Espindola
3c0f11a265 Fixed version of 118639 with an extra assert to catch similar problems 
earlier. Implicit bool -> int conversions are evil!

llvm-svn: 118651
 2010-11-09 23:42:07 +00:00
Bill Wendling
8cfb0a507e s/std::vector/SmallVector/ 
llvm-svn: 118648
 2010-11-09 23:28:44 +00:00
Rafael Espindola
a16ec0145e Revert previous patch. Missed a case. 
llvm-svn: 118645
 2010-11-09 22:54:38 +00:00
Bill Wendling
01897eaa4e Delete the allocated vector. 
llvm-svn: 118644
 2010-11-09 22:51:42 +00:00
Bob Wilson
03a878a419 Define the subtarget feature for the architecture version, 
as derived from the target triple.  This is important for enabling
features that are implied based on the architecture version.

llvm-svn: 118643
 2010-11-09 22:50:47 +00:00
Bob Wilson
a933ce4caa Do not use MEMBARRIER_MCR for any Thumb code. 
It is only supported for ARM code.  Normally Thumb2 code would use DMB instead,
but depending on how the compiler is invoked (e.g., -mattr=-db) that might be
disabled.  This prevents a "cannot select MEMBARRIER_MCR" error in that
situation.  Radar 8644195

llvm-svn: 118642
 2010-11-09 22:50:44 +00:00
Bill Wendling
63cfae801d Two types of instructions have register lists: 
* LDM, et al, uses a bit mask to indicate the register list.
* VLDM, et al, uses a base register plus number.

The LDM instructions may be non-contiguous, but the VLDM ones must be
contiguous. Those are semantic checks that should be done later in the
compiler. Also postpone the creation of the bit mask until it's needed.

llvm-svn: 118640
 2010-11-09 22:44:22 +00:00
Rafael Espindola
5e39a6d951 Remove IsExplicit. It was always false. 
llvm-svn: 118639
 2010-11-09 22:37:44 +00:00
Jim Grosbach
be0d795478 Change the ARMConstantPoolValue modifier string to an enumeration. This will 
help in MC'izing the references that use them.

llvm-svn: 118633
 2010-11-09 21:36:17 +00:00
Andrew Trick
374490bf92 Adds RABasic verification and tracing. 
(retry now that the windows build is green)

llvm-svn: 118630
 2010-11-09 21:04:34 +00:00
Dan Gohman
2a7e94d265 Convert comments to doxygen syntax. 
llvm-svn: 118628
 2010-11-09 20:33:57 +00:00
Dan Gohman
a42f6c32a3 Teach FunctionAttrs about the VAArg instruction. 
llvm-svn: 118627
 2010-11-09 20:17:38 +00:00
Dan Gohman
4651780f86 Use the AliasAnalysis interface to determine how a Function accesses 
memory. This isn't a real improvement with present day AliasAnalysis
implementations; it's mainly for consistency.

llvm-svn: 118624
 2010-11-09 20:13:27 +00:00
Dan Gohman
ebeb34d412 VAArg doesn't capture its operand. 
llvm-svn: 118623
 2010-11-09 20:09:35 +00:00
Dan Gohman
357342a9b8 Translate IntrReadArgMem to AccessesArgumentsReadonly. 
llvm-svn: 118622
 2010-11-09 20:07:20 +00:00
Dan Gohman
f82eabd648 Teach AliasAnalysis about AccessesArgumentsReadonly. 
llvm-svn: 118621
 2010-11-09 20:06:55 +00:00
Dan Gohman
1308376ebf Teach LICM and AliasSetTracker about AccessesArgumentsReadonly. 
llvm-svn: 118618
 2010-11-09 19:58:21 +00:00
Dan Gohman
4cba066d9f Teach FunctionAttrs about AccessesArgumentsReadonly. 
llvm-svn: 118617
 2010-11-09 19:56:27 +00:00
Matt Beaumont-Gay
0f262ff853 Add a trivial virtual dtor to AbstractRegisterDescription to appease 
-Wnon-virtual-dtor.

llvm-svn: 118616
 2010-11-09 19:56:25 +00:00
Dan Gohman
27fb58d9c7 AccessesArgumentsReadonly is read-only. 
llvm-svn: 118615
 2010-11-09 19:50:00 +00:00
Dan Gohman
d50f969460 Add a AccessesArgumentsReadonly ModRefBehavior value, so that the intrinsic 
property IntrReadArgMem can be modeled.

llvm-svn: 118614
 2010-11-09 19:48:55 +00:00
Andrew Trick
6b9d6df8c3 Reverting r118604. Windows build broke. 
llvm-svn: 118613
 2010-11-09 19:47:51 +00:00
Dan Gohman
9bdf92c92c Factor out the logic for onlyReadsMemory into a helper function. 
llvm-svn: 118611
 2010-11-09 19:43:24 +00:00
Dan Gohman
3de0bd24db Delete AccessesArgumentsAndGlobals, which was unused. 
llvm-svn: 118610
 2010-11-09 19:41:37 +00:00
Jim Grosbach
d98cc456d2 Handle ARM constant pool values that need an explicit reference to the '.' 
pseudo-label. (TLS stuff).

llvm-svn: 118609
 2010-11-09 19:40:22 +00:00
Chris Lattner
d7d7d5717b add a case we fail to devirt. 
llvm-svn: 118608
 2010-11-09 19:37:28 +00:00
Jim Grosbach
ce5c2dbeae Trailing whitespace. 
llvm-svn: 118606
 2010-11-09 19:22:26 +00:00
Andrew Trick
ce7b5df15e Adds RABasic verification and tracing. 
llvm-svn: 118604
 2010-11-09 19:01:17 +00:00
Jim Grosbach
2c60dfb555 Further MCize ARM constant pool values. This allows basic PIC references for 
object file emission.

llvm-svn: 118601
 2010-11-09 18:45:04 +00:00
Jim Grosbach
abe68922ca Add encoding of Rt to ARM LDR/STR w/ reg+reg offset encoding. 
llvm-svn: 118600
 2010-11-09 18:43:54 +00:00
Owen Anderson
a08bcc13b3 Last try to get this reference counting right, I swear. 
llvm-svn: 118589
 2010-11-09 17:47:10 +00:00
Owen Anderson
1fd660701c Really fix the leak in the attributes list. Thanks to Benjamin Kramer for pointing out how I was being stupid. 
llvm-svn: 118588
 2010-11-09 17:46:38 +00:00
Jim Grosbach
08310de036 For ARM load/store instructions, encode [reg+reg] with no shifter immediate as 
a left shift by zero.

llvm-svn: 118587
 2010-11-09 17:38:15 +00:00
Jim Grosbach
0a8517fd62 ARM .word data fixups don't need an adjustment. 
llvm-svn: 118586
 2010-11-09 17:36:59 +00:00
Duncan Sands
f68789ed87 Factorize code, no functionality change. 
llvm-svn: 118516
 2010-11-09 17:25:51 +00:00
Bruno Cardoso Lopes
81f7b26109 Fix trailing whitespace and style, no functionality change 
llvm-svn: 118515
 2010-11-09 17:25:34 +00:00