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42999 Commits

Author SHA1 Message Date
Dan Gohman d209911642 Use getValueOperand() and getPointerOperand() on load and store 
instructions instead of hard-coding operand numbers.

llvm-svn: 118698
 2010-11-10 19:03:33 +00:00
Duncan Sands f3b1bf1606 Teach InstructionSimplify how to look through PHI nodes. Since PHI 
nodes can be used in loops, this could result in infinite looping
if there is no recursion limit, so add such a limit.  It is also
used for the SelectInst case because in theory there could be an
infinite loop there too if the basic block is unreachable.

llvm-svn: 118694
 2010-11-10 18:23:01 +00:00
Dan Gohman 066c1bb1e9 Add a doesAccessArgPointees helper function, and update code to use 
it, and to be consistent.

llvm-svn: 118692
 2010-11-10 18:17:28 +00:00
Jim Grosbach ca21cd749e Simplify and clean up MC symbol lookup for ARM constant pool values. This fixes 
double quoting of ObjC symbol names in constant pool entries.

rdar://8652107

llvm-svn: 118688
 2010-11-10 17:59:10 +00:00
Dan Gohman 2577580967 Factor out the code for testing whether a function accesses 
arbitrary memory into a helper function, and adjust some comments.

llvm-svn: 118687
 2010-11-10 17:34:04 +00:00
Michael J. Spencer b39a89716f Fix Whitespace. 
llvm-svn: 118683
 2010-11-10 15:06:00 +00:00
Michael J. Spencer 909d238eba System/Win32/Path: Implement isSymLink. 
llvm-svn: 118681
 2010-11-10 15:05:39 +00:00
Duncan Sands b0579e9d3f 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 23ebef1456 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
Jim Grosbach f23b2d9d8d 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 67fc18a493 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 0171dc30ff 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 91607f878c 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 de5c4dc24b Simplify the LiveRangeEdit::canRematerializeAt() interface a bit. 
llvm-svn: 118661
 2010-11-10 01:05:12 +00:00
Dan Gohman 2694e14087 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 55c4cc76ce Rename a parameter to avoid confusion with a local variable 
llvm-svn: 118656
 2010-11-10 00:08:58 +00:00
Bill Wendling e9a9c6da04 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
Rafael Espindola 9bb44a5ce8 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 bed9465a96 s/std::vector/SmallVector/ 
llvm-svn: 118648
 2010-11-09 23:28:44 +00:00
Rafael Espindola 33048f069f Revert previous patch. Missed a case. 
llvm-svn: 118645
 2010-11-09 22:54:38 +00:00
Bill Wendling da3c0fbc64 Delete the allocated vector. 
llvm-svn: 118644
 2010-11-09 22:51:42 +00:00
Bob Wilson d0046ca62d 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 193722ebc8 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 2cae3277a5 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 4bdd2724e3 Remove IsExplicit. It was always false. 
llvm-svn: 118639
 2010-11-09 22:37:44 +00:00
Jim Grosbach a942ad4222 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 488660554e 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 e3467a7687 Teach FunctionAttrs about the VAArg instruction. 
llvm-svn: 118627
 2010-11-09 20:17:38 +00:00
Dan Gohman 35814e6128 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 88ff1ece63 VAArg doesn't capture its operand. 
llvm-svn: 118623
 2010-11-09 20:09:35 +00:00
Dan Gohman 5d06f892ef Teach AliasAnalysis about AccessesArgumentsReadonly. 
llvm-svn: 118621
 2010-11-09 20:06:55 +00:00
Dan Gohman 0f17507478 Teach LICM and AliasSetTracker about AccessesArgumentsReadonly. 
llvm-svn: 118618
 2010-11-09 19:58:21 +00:00
Dan Gohman de52155685 Teach FunctionAttrs about AccessesArgumentsReadonly. 
llvm-svn: 118617
 2010-11-09 19:56:27 +00:00
Matt Beaumont-Gay 7c1fddb531 Add a trivial virtual dtor to AbstractRegisterDescription to appease 
-Wnon-virtual-dtor.

llvm-svn: 118616
 2010-11-09 19:56:25 +00:00
Andrew Trick 42d50e920b Reverting r118604. Windows build broke. 
llvm-svn: 118613
 2010-11-09 19:47:51 +00:00
Jim Grosbach 2fd4c37d8b 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 4d94e47368 add a case we fail to devirt. 
llvm-svn: 118608
 2010-11-09 19:37:28 +00:00
Jim Grosbach 68147ee320 Trailing whitespace. 
llvm-svn: 118606
 2010-11-09 19:22:26 +00:00
Andrew Trick 85064c17be Adds RABasic verification and tracing. 
llvm-svn: 118604
 2010-11-09 19:01:17 +00:00
Jim Grosbach 38f8e76e51 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 7e51095c23 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 91bfeb10b5 Last try to get this reference counting right, I swear. 
llvm-svn: 118589
 2010-11-09 17:47:10 +00:00
Owen Anderson 2d335436f3 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 59002dc973 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 9b973490c9 ARM .word data fixups don't need an adjustment. 
llvm-svn: 118586
 2010-11-09 17:36:59 +00:00
Duncan Sands fc5ad3f0f9 Factorize code, no functionality change. 
llvm-svn: 118516
 2010-11-09 17:25:51 +00:00
Bruno Cardoso Lopes 9c5c829d9a Fix trailing whitespace and style, no functionality change 
llvm-svn: 118515
 2010-11-09 17:25:34 +00:00
Jim Grosbach dbfb5edbdb Add encoder method for ARM load/store shifted register offset operands. 
llvm-svn: 118513
 2010-11-09 17:20:53 +00:00
Michael J. Spencer d7e3b54635 System/Path/Windows: Implement GetLLVMDefaultConfigDir. 
llvm-svn: 118507
 2010-11-09 15:11:42 +00:00
Michael J. Spencer 86cdb42737 System/Path/Windows: Generalize GetUserHomeDirectory. 
llvm-svn: 118506
 2010-11-09 15:11:31 +00:00