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71574 Commits

Author SHA1 Message Date
Chris Lattner fb7f87d5a3 add a new SimplifyInstruction API, which is like ConstantFoldInstruction, 
except that the result may not be a constant.  Switch jump threading to 
use it so that it gets things like (X & 0) -> 0, which occur when phi preds
are deleted and the remaining phi pred was a zero.

llvm-svn: 86637
 2009-11-10 01:08:51 +00:00
Jeffrey Yasskin b40d3f76a0 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 a71e9d61be 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 0d412c2528 Fixed to address code review. No functional changes. 
llvm-svn: 86634
 2009-11-10 00:48:55 +00:00
Daniel Dunbar a8b869e794 Simplify, following MemoryBuffer::getSTDIN API fix. 
llvm-svn: 86633
 2009-11-10 00:46:25 +00:00
Daniel Dunbar 69914f4134 Switch to getFileOrSTDIN(). 
llvm-svn: 86632
 2009-11-10 00:46:19 +00:00
Daniel Dunbar 190401566e Remove some if-0'd code, we can resurrect this if we ever decide to support 
continuing after invalid PCH loads.

llvm-svn: 86631
 2009-11-10 00:46:12 +00:00
Daniel Dunbar 124fc5e252 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
Douglas Gregor 983136e3a1 Move all of the type-printing logic to its own C++ source file 
llvm-svn: 86629
 2009-11-10 00:39:07 +00:00
David Goodwin cf89db135e 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 ccfdceb22c 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 2ac504729b Pass the (optional) TargetData object to ConstantFoldInstOperands 
and ConstantFoldCompareInstOperands.

llvm-svn: 86626
 2009-11-09 23:34:17 +00:00
Chris Lattner beadc6e8c7 inline a simple function. 
llvm-svn: 86625
 2009-11-09 23:31:49 +00:00
Chris Lattner c1f19071f8 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
Daniel Dunbar 60198df262 Add PreprocessorOptions to CompilerInvocation. 
llvm-svn: 86623
 2009-11-09 23:12:31 +00:00
Jim Grosbach 2524b04d0e 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 f8a74fc4a5 Add testcase for recent checkin. 
llvm-svn: 86620
 2009-11-09 23:10:49 +00:00
Chris Lattner cdfb80de16 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 3f94a132dd Add StringSwitch::Cases overloads, for matching multiple strings to a single 
value.

llvm-svn: 86618
 2009-11-09 23:05:44 +00:00
Daniel Dunbar 4df9aa2388 Privatize InitHeaderSearch, this functionality is only exposed via 
ApplyHeaderSearchOptions now.

llvm-svn: 86617
 2009-11-09 23:02:47 +00:00
Chris Lattner 800aad3dda 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 47e3bcf180 Update test 
llvm-svn: 86614
 2009-11-09 22:59:01 +00:00
Chris Lattner 084a1b5581 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
Daniel Dunbar e213db84cb Move LangOptions, HeaderSearchOptions, and the target feature map into 
CompilerInvocation.

llvm-svn: 86612
 2009-11-09 22:46:17 +00:00
Daniel Dunbar d673bfa6aa Switch Target* to Target&. 
llvm-svn: 86611
 2009-11-09 22:46:09 +00:00
Daniel Dunbar 9707d8262b Add default initializer for Sysroot ivar. 
llvm-svn: 86610
 2009-11-09 22:46:04 +00:00
Daniel Dunbar 1de7855155 Change clang-cc to expect that all inputs have the same language (so we can only construct a single LangInfo). This matches how it is used in practice (since the compiler only it invokes it for one file at a time). 
llvm-svn: 86609
 2009-11-09 22:45:57 +00:00
Daniel Dunbar 06d4716297 (llvm up) Convert clang-cc.cpp:GetLanguage to StringSwitch. 
llvm-svn: 86608
 2009-11-09 22:45:47 +00:00
Mike Stump 68ec7ee0e8 Enable the use of the new llvm objectsize intrinsic. 
llvm-svn: 86607
 2009-11-09 22:40:09 +00:00
Jeffrey Yasskin 8483f12ac5 Remove dlsym stubs, with Nate Begeman's permission. 
llvm-svn: 86606
 2009-11-09 22:34:19 +00:00
Jim Grosbach 1218b804fb Enable dynamic stack realignment by default. 
llvm-svn: 86604
 2009-11-09 22:32:40 +00:00
Chris Lattner 2978ca7b79 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 55d3480769 Set dynamic stack realignment to real values. 
llvm-svn: 86602
 2009-11-09 22:32:03 +00:00
Dan Gohman a951526510 Remove an unneeded #include. 
llvm-svn: 86601
 2009-11-09 22:28:30 +00:00
Mike Stump f04c4cdb27 Fix for 64-bit builds. 
llvm-svn: 86600
 2009-11-09 22:28:21 +00:00
Fariborz Jahanian a44e8d85a7 Further change in a comment. 
llvm-svn: 86599
 2009-11-09 22:28:08 +00:00
Fariborz Jahanian 3fe453c48c Removed a FIXME on nested type specifier warning. 
llvm-svn: 86598
 2009-11-09 22:25:11 +00:00
Fariborz Jahanian b98dade25b Changed error for nested type qualifier mismatch to 
warning, to match gcc. It used to be warning, so
better keep it a warning (it broke a certain project).

llvm-svn: 86597
 2009-11-09 22:16:37 +00:00
Douglas Gregor 4ef1d400d9 Make sure that Type::getAs<ArrayType>() (or Type::getAs<subclass of 
ArrayType>()) does not instantiate. Update all callers that used this
unsafe feature to use the appropriate ASTContext::getAs*ArrayType method.

llvm-svn: 86596
 2009-11-09 22:08:55 +00:00
Ted Kremenek dd51f7cca2 Remove stale FIXME. 
llvm-svn: 86595
 2009-11-09 21:56:44 +00:00
Bill Wendling 787997f77e Similar to r86588, but for Darwin this time. 
llvm-svn: 86592
 2009-11-09 21:45:26 +00:00
Douglas Gregor 8caea94c74 Make sure that we look into nested, transparent declaration contexts 
when looking for a name within a given DeclContext. Now enumerators
will show up in code-completion results.

llvm-svn: 86591
 2009-11-09 21:35:27 +00:00
Bill Wendling 7307bff420 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
Fariborz Jahanian facfdd4d93 For array pointee type, get its cvr qualifier from 
its element type. Fixes pr5432.

llvm-svn: 86587
 2009-11-09 21:02:05 +00:00
Daniel Dunbar b2eae89108 Add CompilerInvocation object, to capture all the options one needs to invoke 
the compiler, and start flood filling it into clang-cc.

llvm-svn: 86586
 2009-11-09 20:55:08 +00:00
Eli Friedman 0bf69cc7b7 Stub out a few more warning groups. 
llvm-svn: 86585
 2009-11-09 20:19:49 +00:00
Benjamin Kramer 382414d519 Fix build after r86579. 
llvm-svn: 86584
 2009-11-09 20:14:44 +00:00
Dan Gohman 2745d19287 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 ccb4584edd 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
Douglas Gregor 1bc688dc60 Make sure that we instantiate default function arguments for an 
overloaded operator(). 

llvm-svn: 86581
 2009-11-09 19:27:57 +00:00