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5886 Commits

Author SHA1 Message Date
Evan Cheng
5fe81cf64e Enable more fold (sext (load x)) -> (sext (truncate (sextload x))) 
transformation. Previously, it's restricted by ensuring the number of load uses
is one. Now the restriction is loosened up by allowing setcc uses to be
"extended" (e.g. setcc x, c, eq -> setcc sext(x), sext(c), eq).

llvm-svn: 43465
 2007-10-29 19:58:20 +00:00
Dan Gohman
65be3b6502 Add explicit keywords. 
llvm-svn: 43464
 2007-10-29 19:52:04 +00:00
Chris Lattner
3d6151bcd1 Model stacksave and stackrestore as both writing memory, since we 
don't model their dependences on allocas correctly.  This fixes
PR1745.

llvm-svn: 43442
 2007-10-29 05:47:52 +00:00
Owen Anderson
229333c94b Add a first attempt at dominator information for MBB's. Use with caution: this has been tested to compile. It has not yet been confirmed to generate correct analysis. 
llvm-svn: 43438
 2007-10-29 04:50:50 +00:00
Ted Kremenek
27c96e0d86 Updated backpatching logic during object deserialization to perform 
eager backpatching instead of waithing until all objects have been
deserialized.  This allows us to reduce the memory footprint needed
for backpatching.

llvm-svn: 43422
 2007-10-28 21:17:59 +00:00
Duncan Sands
b494fb97a4 The guaranteed alignment of ptr+offset is only the minimum of 
of offset and the alignment of ptr if these are both powers of
2.  While the ptr alignment is guaranteed to be a power of 2,
there is no reason to think that offset is.  For example, if
offset is 12 (the size of a long double on x86-32 linux) and
the alignment of ptr is 8, then the alignment of ptr+offset
will in general be 4, not 8.  Introduce a function MinAlign,
lifted from gcc, for computing the minimum guaranteed alignment.
I've tried to fix up everywhere under lib/CodeGen/SelectionDAG/.
I also changed some places that weren't wrong (because both values
were a power of 2), as a defensive change against people copying
and pasting the code.
Hopefully someone who cares about alignment will review the rest
of LLVM and fix up the remaining places.  Since I'm on x86 I'm
not very motivated to do this myself...

llvm-svn: 43421
 2007-10-28 12:59:45 +00:00
Ted Kremenek
254ef9c99c Fixed bug where default SerializeTrait<>::Materialize would not return the materialized object pointer. 
llvm-svn: 43413
 2007-10-26 23:44:59 +00:00
Ted Kremenek
3f3b4818ef Added serialization support for APInt. 
llvm-svn: 43405
 2007-10-26 21:50:10 +00:00
Ted Kremenek
5b2ac3504a Fixed incorrect "path name" in preamble (comment) of header file. 
llvm-svn: 43402
 2007-10-26 20:44:02 +00:00
Ted Kremenek
0347caa918 Fixed incorrect "path name" in preamble (comment) of header file. 
llvm-svn: 43401
 2007-10-26 20:42:45 +00:00
Ted Kremenek
87e1cadc06 Added default implementation of SerializeTrait<> that dispatches to 
calling member functions of the target type to perform type-specific
serialization.
                         
Added version of ReadPtr that allows passing references to uintptr_t
(useful for smart pointers).

llvm-svn: 43396
 2007-10-26 20:23:27 +00:00
Gordon Henriksen
609997aa7d More fleshing out of docs/Passes.html, plus some typo fixes and 
improved wording in source files.

llvm-svn: 43377
 2007-10-26 03:03:51 +00:00
Evan Cheng
53696b7e9f Loosen up iv reuse to allow reuse of the same stride but a larger type when truncating from the larger type to smaller type is free. 
e.g.
Turns this loop:
LBB1_1: # entry.bb_crit_edge
        xorl    %ecx, %ecx
        xorw    %dx, %dx
        movw    %dx, %si
LBB1_2: # bb
        movl    L_X$non_lazy_ptr, %edi
        movw    %si, (%edi)
        movl    L_Y$non_lazy_ptr, %edi
        movw    %dx, (%edi)
		addw    $4, %dx
		incw    %si
		incl    %ecx
		cmpl    %eax, %ecx
		jne     LBB1_2  # bb
	
into

LBB1_1: # entry.bb_crit_edge
        xorl    %ecx, %ecx
        xorw    %dx, %dx
LBB1_2: # bb
        movl    L_X$non_lazy_ptr, %esi
        movw    %cx, (%esi)
        movl    L_Y$non_lazy_ptr, %esi
        movw    %dx, (%esi)
        addw    $4, %dx
		incl    %ecx
        cmpl    %eax, %ecx
        jne     LBB1_2  # bb

llvm-svn: 43375
 2007-10-26 01:56:11 +00:00
Ted Kremenek
2bfb73a3f4 Updated backpatching during object deserialization to support "smart" 
pointers that employ unused bits in a pointer to store extra data.

llvm-svn: 43373
 2007-10-25 23:40:35 +00:00
Ted Kremenek
d29fe31fcd Added special treatment of serializing NULL pointers. 
llvm-svn: 43357
 2007-10-25 18:42:52 +00:00
Ted Kremenek
9749790ef5 Created header file to include minimal forward references needed for 
object serialization.

llvm-svn: 43352
 2007-10-25 18:19:29 +00:00
Duncan Sands
f37520fcff Fix comment typos. 
llvm-svn: 43338
 2007-10-25 12:28:12 +00:00
Chris Lattner
09c4d1b720 remove unimplemented ctor, add some comments. 
llvm-svn: 43328
 2007-10-25 05:19:24 +00:00
Owen Anderson
dc3329dbf7 Make it possible for DomTreeBase to be constructed from MachineFunction's as well as just Function's. 
llvm-svn: 43321
 2007-10-25 00:16:57 +00:00
Ted Kremenek
195382dce2 Implemented prototype serialization of pointers, including support 
for backpatching.

Added Deserialize::ReadVal.

llvm-svn: 43319
 2007-10-25 00:10:21 +00:00
Ted Kremenek
b3085f2d74 Split Serialization.h into separate headers: Serialize.h and 
Deserialize.h Serialization.h now includes trait speciailizations for
unsigned long, etc.

llvm-svn: 43307
 2007-10-24 19:06:40 +00:00
Chris Lattner
ef90913394 add a nice predicate to check to see if nan 
llvm-svn: 43304
 2007-10-24 18:54:28 +00:00
Hartmut Kaiser
b72a8fcf9c Silenced a VC++ warning. 
llvm-svn: 43276
 2007-10-24 00:06:31 +00:00
Ted Kremenek
bb85c21ffc Added "ReadEnum" and "WriteEnum" to serialization classes. 
llvm-svn: 43265
 2007-10-23 22:17:03 +00:00
Owen Anderson
52b33065a4 Make DomTreeBase not a FunctionPass. 
llvm-svn: 43263
 2007-10-23 21:42:49 +00:00
Ted Kremenek
72fe268f74 Added preliminary implementation of generic object serialization to bitcode. 
llvm-svn: 43261
 2007-10-23 21:29:33 +00:00
Owen Anderson
962303b4ef Unbreak the build. Forgot to commit this file. 
llvm-svn: 43260
 2007-10-23 21:04:37 +00:00
Owen Anderson
33b9693ab8 Make DomTree and PostDomTree thin wrappers around DomTreeBase, rather than inheriting from it. 
llvm-svn: 43259
 2007-10-23 20:58:37 +00:00
Evan Cheng
dc2f1b1741 isSubRegOf() is a dup of isSubRegister. 
llvm-svn: 43249
 2007-10-23 06:51:50 +00:00
Dan Gohman
68fc6d7395 Move the SCEV object factors from being static members of the individual 
SCEV subclasses to being non-static member functions of the ScalarEvolution
class.

llvm-svn: 43224
 2007-10-22 18:31:58 +00:00
Chris Lattner
ecea068eb2 add a mechanism for the JIT to invoke a function to lazily create functions as they are referenced. 
llvm-svn: 43210
 2007-10-22 02:50:12 +00:00
Anton Korobeynikov
bcee4726bf Reg2Mem cleanup and optimizations: 
- enable phi instructions demotion to stack
 - create alloca instructions in the entry block

llvm-svn: 43208
 2007-10-21 23:05:16 +00:00
Chris Lattner
712119a5ed Add a convenience method for creating EE's. 
llvm-svn: 43206
 2007-10-21 22:57:11 +00:00
Evan Cheng
ded6550885 Local spiller optimization: 
Turn a store folding instruction into a load folding instruction. e.g.
     xorl  %edi, %eax
     movl  %eax, -32(%ebp)
     movl  -36(%ebp), %eax
     orl   %eax, -32(%ebp)
=>
     xorl  %edi, %eax
     orl   -36(%ebp), %eax
     mov   %eax, -32(%ebp)
This enables the unfolding optimization for a subsequent instruction which will
also eliminate the newly introduced store instruction.

llvm-svn: 43192
 2007-10-19 21:23:22 +00:00
Chris Lattner
45b8558ec5 rename ExpandOperation to ExpandOperationResult, as suggested 
by Duncan

llvm-svn: 43177
 2007-10-19 15:28:47 +00:00
Rafael Espindola
d8d4372845 Add support for byval function whose argument is not 32 bit aligned. 
To do this it is necessary to add a "always inline" argument to the
memcpy node. For completeness I have also added this node to memmove
and memset.  I have also added getMem* functions, because the extra
argument makes it cumbersome to use getNode and because I get confused
by it :-)

llvm-svn: 43172
 2007-10-19 10:41:11 +00:00
Chris Lattner
f02434cdaf add a new target hook. 
llvm-svn: 43165
 2007-10-19 03:31:45 +00:00
Dale Johannesen
b23b0bfa8f More ppcf128 issues (maybe the last)? 
llvm-svn: 43160
 2007-10-19 00:59:18 +00:00
Evan Cheng
0449186690 - Added getOpcodeAfterMemoryUnfold(). It doesn't unfold an instruction, but only returns the opcode of the instruction post unfolding. 
- Fix some copy+paste bugs.

llvm-svn: 43153
 2007-10-18 22:40:57 +00:00
Evan Cheng
c852780685 Use SmallVectorImpl instead of SmallVector with hardcoded size in MRegister public interface. 
llvm-svn: 43150
 2007-10-18 21:29:24 +00:00
Christopher Lamb
b9c6101dd5 Add an uppercase conversion utility function. 
llvm-svn: 43146
 2007-10-18 19:31:38 +00:00
Chris Lattner
ecbffce0b7 remove dead file 
llvm-svn: 43131
 2007-10-18 16:12:54 +00:00
Chris Lattner
e047abe2b4 update comment. 
llvm-svn: 43128
 2007-10-18 16:10:17 +00:00
Gordon Henriksen
422d66e53e Missing 'public' keyword. 
llvm-svn: 43121
 2007-10-18 11:31:21 +00:00
Evan Cheng
f6d1c7be14 Really fix PR1734. Carefully track which register uses are sub-register uses by 
traversing inverse register coalescing map.

llvm-svn: 43118
 2007-10-18 07:49:59 +00:00
Evan Cheng
05890a1438 Remove unnecessary include. 
llvm-svn: 43117
 2007-10-18 07:47:55 +00:00
Owen Anderson
4b407757d0 Move Split<...>() into DomTreeBase. This should make the #include's of DominatorInternals.h 
in CodeExtractor and LoopSimplify unnecessary.

Hartmut, could you confirm that this fixes the issues you were seeing?

llvm-svn: 43115
 2007-10-18 05:13:52 +00:00
Ted Kremenek
c00b2095fa Changed the return type of type-specific Allocate() methods to return 
void*.  This is hint that we are returning uninitialized memory rather
than a constructed object.

Patched ImutAVLTree to conform to this new interface.

llvm-svn: 43106
 2007-10-18 00:30:14 +00:00
Ted Kremenek
7d21c85cca ImutAVLTree now allocates tree nodes from the BumpPtrAllocator using 
the new type-aligned Allocate() method.

llvm-svn: 43100
 2007-10-17 22:17:01 +00:00
Ted Kremenek
bf43a92ef5 Removed inclusion of cassert, which is no longer needed. 
llvm-svn: 43099
 2007-10-17 22:12:14 +00:00