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Author SHA1 Message Date
Jeffrey Yasskin
23ac706aab Fix DenseMap iterator constness. 
This patch forbids implicit conversion of DenseMap::const_iterator to
DenseMap::iterator which was possible because DenseMapIterator inherited
(publicly) from DenseMapConstIterator. Conversion the other way around is now
allowed as one may expect.

The template DenseMapConstIterator is removed and the template parameter
IsConst which specifies whether the iterator is constant is added to
DenseMapIterator.

Actually IsConst parameter is not necessary since the constness can be
determined from KeyT but this is not relevant to the fix and can be addressed
later.

Patch by Victor Zverovich!

llvm-svn: 86636
 2009-11-10 01:02:17 +00:00
Chris Lattner
3730cf6fef factor simplification logic for AND and OR out to InstSimplify from instcombine. 
llvm-svn: 86635
 2009-11-10 00:55:12 +00:00
David Goodwin
93a4f29c67 Fixed to address code review. No functional changes. 
llvm-svn: 86634
 2009-11-10 00:48:55 +00:00
Daniel Dunbar
886e51b5c1 Fix MemoryBuffer::getSTDIN to *not* return null if stdin is empty, this is a lame API. 
Also, Stringrefify some more MemoryBuffer functions, and add two performance FIXMEs.

llvm-svn: 86630
 2009-11-10 00:43:58 +00:00
David Goodwin
538f9c25f8 Allow targets to specify register classes whose member registers should not be renamed to break anti-dependencies. 
llvm-svn: 86628
 2009-11-10 00:15:47 +00:00
Chris Lattner
9941f27797 pull a bunch of logic out of instcombine into instsimplify for compare 
simplification, this handles the foldable fcmp x,x cases among many others.

llvm-svn: 86627
 2009-11-09 23:55:12 +00:00
Dan Gohman
22719d2a1a Pass the (optional) TargetData object to ConstantFoldInstOperands 
and ConstantFoldCompareInstOperands.

llvm-svn: 86626
 2009-11-09 23:34:17 +00:00
Chris Lattner
9aa69f2205 inline a simple function. 
llvm-svn: 86625
 2009-11-09 23:31:49 +00:00
Chris Lattner
25700676d4 rename SimplifyCompare -> SimplifyCmpInst and split it into 
Simplify[IF]Cmp pieces.  Add some predicates to CmpInst to 
determine whether a predicate is fp or int.

llvm-svn: 86624
 2009-11-09 23:28:39 +00:00
Jim Grosbach
ed9f847274 Now that the default is 'enabled,' a separate command line option for ARM is 
not necessary.

llvm-svn: 86621
 2009-11-09 23:11:45 +00:00
Mike Stump
ee3ba929d0 Add testcase for recent checkin. 
llvm-svn: 86620
 2009-11-09 23:10:49 +00:00
Chris Lattner
131172dc76 fix ConstantFoldCompareInstOperands to take the LHS/RHS as 
individual operands instead of taking a temporary array

llvm-svn: 86619
 2009-11-09 23:06:58 +00:00
Daniel Dunbar
e458fe6d8e Add StringSwitch::Cases overloads, for matching multiple strings to a single 
value.

llvm-svn: 86618
 2009-11-09 23:05:44 +00:00
Chris Lattner
29db7d6abe use instructionsimplify instead of a weak clone of ad-hoc folding stuff. 
llvm-svn: 86616
 2009-11-09 23:00:14 +00:00
Jim Grosbach
9f37156ae5 Update test 
llvm-svn: 86614
 2009-11-09 22:59:01 +00:00
Chris Lattner
126d78f1c7 stub out a new libanalysis "instruction simplify" interface that 
takes decimated instructions and applies identities to them.  This
is pretty minimal at this point, but I plan to pull some instcombine
logic out into these and similar routines.

llvm-svn: 86613
 2009-11-09 22:57:59 +00:00
Jeffrey Yasskin
7ad82ff8cf Remove dlsym stubs, with Nate Begeman's permission. 
llvm-svn: 86606
 2009-11-09 22:34:19 +00:00
Jim Grosbach
b934f9ccd4 Enable dynamic stack realignment by default. 
llvm-svn: 86604
 2009-11-09 22:32:40 +00:00
Chris Lattner
8cb0f89bbd stub out a new form of BasicBlock::RemovePredecessorAndSimplify which 
simplifies instruction users of PHIs when the phi is eliminated.  This
will be moved to transforms/utils after some other refactoring.

llvm-svn: 86603
 2009-11-09 22:32:36 +00:00
Jim Grosbach
3e2968ee4b Set dynamic stack realignment to real values. 
llvm-svn: 86602
 2009-11-09 22:32:03 +00:00
Dan Gohman
9885f20a6d Remove an unneeded #include. 
llvm-svn: 86601
 2009-11-09 22:28:30 +00:00
Mike Stump
c2b669b3b2 Fix for 64-bit builds. 
llvm-svn: 86600
 2009-11-09 22:28:21 +00:00
Bill Wendling
86f32da164 Similar to r86588, but for Darwin this time. 
llvm-svn: 86592
 2009-11-09 21:45:26 +00:00
Bill Wendling
fab993b096 The jump table was being generated before the end label for exception handling 
was generated. This caused code like this:

## The asm code for the function
        .section        __TEXT,__const
        .align  2
lJTI11_0:
LJTI11_0:
        .long    LBB11_16
        .long    LBB11_4
        .long    LBB11_5
        .long    LBB11_6
        .long    LBB11_7
        .long    LBB11_8
        .long    LBB11_9
        .long    LBB11_10
        .long    LBB11_11
        .long    LBB11_12
        .long    LBB11_13
        .long    LBB11_14
Leh_func_end11:   ## <---now in the wrong section!

The `Leh_func_end11' would then end up in the wrong section, causing the
resulting EH frame information to be wrong:

__ZL11CheckRightsjPKcbRbRP6NSData.eh:
    .set    Lset500eh,Leh_frame_end11-Leh_frame_begin11
    .long   Lset500eh  ; Length of Frame Information Entry                                                                                                                   
Leh_frame_begin11:
    .long   Leh_frame_begin11-Leh_frame_common
    .long   Leh_func_begin11-.
    .set    Lset501eh,Leh_func_end11-Leh_func_begin11
    .long   Lset501eh                                   ; FDE address range                                                                                                                                   
`Lset501eh' is now something huge instead of the real value.

The X86 back-end generates the jump table after the EH information is
emitted. Do the same here.

llvm-svn: 86588
 2009-11-09 21:20:14 +00:00
Dan Gohman
c64e578e5a Print "..." instead of all the uninteresting register clobbers on call 
instructions. This makes CodeGen dumps significantly less noisy.

Example before:
  BL <ga:@bar>, %R0<imp-def>, %R1<imp-def,dead>, %R2<imp-def,dead>, %R3<imp-def,dead>, %R12<imp-def,dead>, %LR<imp-def,dead>, %D0<imp-def,dead>, %D1<imp-def,dead>, %D2<imp-def,dead>, %D3<imp-def,dead>, %D4<imp-def,dead>, %D5<imp-def,dead>, %D6<imp-def,dead>, %D7<imp-def,dead>, %D16<imp-def,dead>, %D17<imp-def,dead>, %D18<imp-def,dead>, %D19<imp-def,dead>, %D20<imp-def,dead>, %D21<imp-def,dead>, %D22<imp-def,dead>, %D23<imp-def,dead>, %D24<imp-def,dead>, %D25<imp-def,dead>, %D26<imp-def,dead>, %D27<imp-def,dead>, %D28<imp-def,dead>, %D29<imp-def,dead>, %D30<imp-def,dead>, %D31<imp-def,dead>, %CPSR<imp-def,dead>, %FPSCR<imp-def,dead>

Same example after:
  BL <ga:@bar>, %R0<imp-def>, %R1<imp-def,dead>, %LR<imp-def,dead>, %CPSR<imp-def,dead>, ...

llvm-svn: 86583
 2009-11-09 19:38:45 +00:00
Dan Gohman
6780148e20 Default-addressspace null pointers don't alias anything. This allows 
GVN to be more aggressive. Patch by Hans Wennborg! (with a comment added by me)

llvm-svn: 86582
 2009-11-09 19:29:11 +00:00
David Goodwin
2c17fdab6d Fix dependencies added to model memory aliasing for post-RA scheduling. The dependencies were overly conservative for memory access that are known not to alias. 
llvm-svn: 86580
 2009-11-09 19:22:17 +00:00
Dan Gohman
b696ff22f7 The inbounds keyword isn't relevant to overindexing of 
static array types. Thanks to Duncan for pointing this out!

llvm-svn: 86576
 2009-11-09 19:01:53 +00:00
Dan Gohman
7010cad26a Fix a comment in a typo that Duncan noticed. 
llvm-svn: 86575
 2009-11-09 18:59:22 +00:00
Dan Gohman
e2afe7c1c7 Remove the "special case" for zero-length arrays, and rephrase this 
paragraph to be more precise.

llvm-svn: 86572
 2009-11-09 18:40:39 +00:00
Dan Gohman
457b8bad4e Generalize LCSSA to handle loops with exits with predecessors outside 
the loop. This is needed because with indirectbr it may not be possible
for LoopSimplify to guarantee that all loop exit predecessors are
inside the loop. This fixes PR5437.

LCCSA no longer actually requires LoopSimplify form, but for now it
must still have the dependency because the PassManager doesn't know
how to schedule LoopSimplify otherwise.

llvm-svn: 86569
 2009-11-09 18:28:24 +00:00
Dan Gohman
141625abc4 Fix an 80-column violation. 
llvm-svn: 86567
 2009-11-09 18:20:38 +00:00
Dan Gohman
68d528963c Minor tidiness fixes. 
llvm-svn: 86565
 2009-11-09 18:19:43 +00:00
Dan Gohman
8ef26198d2 Constify MachineFunctionAnalysis' TargetMachine reference. 
llvm-svn: 86564
 2009-11-09 18:18:49 +00:00
Dan Gohman
662f54fd6e Fix a comment. 
llvm-svn: 86558
 2009-11-09 17:06:51 +00:00
Dan Gohman
c194ec89ca Suppress implicit copy ctor and copy assignment for MachineFunction. 
llvm-svn: 86557
 2009-11-09 17:06:23 +00:00
Daniel Dunbar
e4f2bab2cd Use ',' separation in XFAILs, lit doesn't evaluate them as regexs (easy to add, 
but might as well use the more standard syntax).

llvm-svn: 86553
 2009-11-09 16:38:15 +00:00
Nuno Lopes
5b15b50af4 add zextOrTrunc and sextOrTrunc methods, that are similar to the ones in APInt 
llvm-svn: 86549
 2009-11-09 15:36:28 +00:00
Jim Grosbach
5b33ce12e3 Work around assembler not recognizing #0.0 form immediate for vmcp 
llvm-svn: 86548
 2009-11-09 15:27:51 +00:00
Oscar Fuentes
b05535f7c5 CMake: Detect gv, circo, twopi, neato, fdo, dot and dotty. 
Patch by Arnaud Allard de Grandmaison!

llvm-svn: 86547
 2009-11-09 15:26:40 +00:00
Xerxes Ranby
57e81f28c1 Make lib/Support/Debug.cpp SetCurrentDebugType implementation part of llvm namespace to match function declaration in Debug.h. 
llvm-svn: 86544
 2009-11-09 14:50:34 +00:00
Bruno Cardoso Lopes
8bedc8bf3b Fix PR5149. 
http://llvm.org/bugs/show_bug.cgi?id=5149

llvm-svn: 86543
 2009-11-09 14:27:49 +00:00
Chris Lattner
91fe2102eb make this handle redefinition of malloc with different prototype correctly. 
llvm-svn: 86525
 2009-11-09 07:12:01 +00:00
Chris Lattner
f2b3c795fd if a 'with overflow' intrinsic just has the normal result used, simplify 
it to a normal binop.  Patch by Alastair Lynn, testcase by me.

llvm-svn: 86524
 2009-11-09 07:07:56 +00:00
Evan Cheng
e3acd9adb5 Hide a couple of options. 
llvm-svn: 86522
 2009-11-09 06:49:37 +00:00
Evan Cheng
4cd6cb4137 80 col. 
llvm-svn: 86521
 2009-11-09 06:49:22 +00:00
Chris Lattner
aaa7706cd5 fix PR5104: when printing a single character, return the result of 
putchar in case there is an error.

llvm-svn: 86515
 2009-11-09 04:57:04 +00:00
Chris Lattner
a8847d8409 fix some bogus asserts, PR5049 
llvm-svn: 86514
 2009-11-09 04:47:27 +00:00
Chris Lattner
6c38ec917d random tidy 
llvm-svn: 86511
 2009-11-09 04:18:23 +00:00
Chris Lattner
c7f4a1df29 remove a redundant printout, LinkInArchive prints this as well. 
llvm-svn: 86510
 2009-11-09 04:15:28 +00:00