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Author SHA1 Message Date
Jeffrey Yasskin
bc5f122491 Fix stylistic and documentation problems in ValueMap found by Nick Lewycky and 
Evan Cheng.

llvm-svn: 84967
 2009-10-23 20:54:00 +00:00
Dan Gohman
b15fee5666 APInt-ify the gep scaling code, so that it correctly handles the case where 
the scale overflows pointer-sized arithmetic. This fixes PR5281.

llvm-svn: 84954
 2009-10-23 17:57:43 +00:00
Dan Gohman
ad2555c9a3 Make LoopDeletion check the maximum backedge taken count, rather than the 
exact backedge taken count, when checking for infinite loops. This allows
it to delete loops with multiple exit conditions.

llvm-svn: 84952
 2009-10-23 17:10:01 +00:00
Chris Lattner
d1dbcae98f some stuff is done, we still have constantexpr simplification to do. 
llvm-svn: 84943
 2009-10-23 07:00:55 +00:00
Chris Lattner
4874f5bce5 teach libanalysis to simplify vector loads with bitcast sources. This 
implements something out of Target/README.txt producing:

_foo:                                                       ## @foo
	movl	4(%esp), %eax
	movapd	LCPI1_0, %xmm0
	movapd	%xmm0, (%eax)
	ret	$4

instead of:

_foo:                                                       ## @foo
	movl	4(%esp), %eax
	movapd	_b, %xmm0
	mulpd	LCPI1_0, %xmm0
	addpd	_a, %xmm0
	movapd	%xmm0, (%eax)
	ret	$4

llvm-svn: 84942
 2009-10-23 06:57:37 +00:00
Chris Lattner
2ee1f0f0b5 enhance FoldReinterpretLoadFromConstPtr to handle loads of up to 32 
bytes (i256).

llvm-svn: 84941
 2009-10-23 06:50:36 +00:00
Chris Lattner
b1d2706a4c teach libanalysis to fold int and fp loads from almost arbitrary 
non-type-safe constant initializers.  This sort of thing happens
quite a bit for 4-byte loads out of string constants, unions, 
bitfields, and an interesting endianness check from sqlite, which
is something like this:

const int sqlite3one = 1;
# define SQLITE_BIGENDIAN    (*(char *)(&sqlite3one)==0)
# define SQLITE_LITTLEENDIAN (*(char *)(&sqlite3one)==1)
# define SQLITE_UTF16NATIVE (SQLITE_BIGENDIAN?SQLITE_UTF16BE:SQLITE_UTF16LE)

all of these macros now constant fold away.

This implements PR3152 and is based on a patch started by Eli, but heavily
modified and extended.

llvm-svn: 84936
 2009-10-23 06:23:49 +00:00
Tanya Lattner
16727944b3 Add 2.6 release note. 
llvm-svn: 84934
 2009-10-23 06:20:06 +00:00
Evan Cheng
aa03d9926d Update tests for 84931. 
llvm-svn: 84932
 2009-10-23 05:58:34 +00:00
Evan Cheng
0db11ae5a2 X86 needs critical path anti-dependency breaking. 
llvm-svn: 84931
 2009-10-23 05:57:35 +00:00
Dale Johannesen
3f91e235b8 Commit fixes for half precision I noted in review, so 
they don't get lost; I don't think the originator has
write access.

llvm-svn: 84928
 2009-10-23 04:02:51 +00:00
Bill Wendling
7d48a41864 This is passing on Darwin PPC. 
llvm-svn: 84921
 2009-10-23 01:37:01 +00:00
Victor Hernandez
48872a3306 Minor code cleanup. 
llvm-svn: 84919
 2009-10-23 00:59:10 +00:00
Bill Wendling
283fb69c0a Neuter stack protectors by only checking character arrays. This is what GCC 
does.

llvm-svn: 84916
 2009-10-23 00:01:05 +00:00
David Goodwin
82c1dd9754 Allow the target to select the level of anti-dependence breaking that should be performed by the post-RA scheduler. The default is none. 
llvm-svn: 84911
 2009-10-22 23:19:17 +00:00
Ted Kremenek
b9ff937285 Use 'waitpid' instead of 'wait'. Basing Program::Wait() on 'wait()' prevents it being correct within a multithreaded context. 
This address: PR 5277 (Program::Wait is unsafe to call from multiple threads).

Note: If waitpid() turns out to be non-portable, we can add more autoconf magic, or look into
another solution.

llvm-svn: 84903
 2009-10-22 22:16:17 +00:00
Jeffrey Yasskin
e90afea0ba Try r84890 again (adding ValueMap<>), now that I've tested the compile on 
gcc-4.4.

llvm-svn: 84902
 2009-10-22 22:11:22 +00:00
Eric Christopher
05ee62db65 size_t, not unsigned here to silence a warning. 
llvm-svn: 84900
 2009-10-22 22:06:50 +00:00
Benjamin Kramer
13aa437a5e Random include cleanup. 
llvm-svn: 84898
 2009-10-22 21:49:41 +00:00
Jeffrey Yasskin
7ed6722fc4 Fix OProfileJITEventListener after r84054 renamed CompileUnit to Scope. 
llvm-svn: 84895
 2009-10-22 20:57:35 +00:00
Bill Wendling
c6d3a6ed66 Tidying up some code and comments. No functionality change. 
llvm-svn: 84894
 2009-10-22 20:48:59 +00:00
Jeffrey Yasskin
7555ed8cdc Revert r84890, which broke the linux build. 
llvm-svn: 84892
 2009-10-22 20:23:43 +00:00
Jeffrey Yasskin
ad8692124f Add a ValueMap<ValueOrSubclass*, T> type. ValueMap<Value*, T> is safe to use 
even when keys get RAUWed and deleted during its lifetime. By default the keys
act like WeakVHs, but users can pass a third template parameter to configure
how updates work and whether to do anything beyond updating the map on each
action.

It's also possible to automatically acquire a lock around ValueMap updates
triggered by RAUWs and deletes, to support the ExecutionEngine.

llvm-svn: 84890
 2009-10-22 20:10:20 +00:00
Devang Patel
5c461d6dcd Hide MetadataContext implementation details. 
llvm-svn: 84886
 2009-10-22 19:36:54 +00:00
Devang Patel
2a0e2f1794 Fix getMDs() interface such that it does not expose implementation details. 
llvm-svn: 84885
 2009-10-22 18:55:16 +00:00
Devang Patel
1fa3e26912 Using TrackingVH instead of WeakVH or WeakMetadataVH. 
llvm-svn: 84884
 2009-10-22 18:25:28 +00:00
Devang Patel
944cbf7647 Sort handler names to ensure deterministic behavior. 
llvm-svn: 84878
 2009-10-22 17:40:37 +00:00
Stuart Hastings
89d8dc1bde Trying again to tweak the top-level Makefile to facilitate an Apple-style build. 
Now with Clang-compatibility.

llvm-svn: 84872
 2009-10-22 17:22:37 +00:00
Bob Wilson
8f4f73da55 Revert 84843. Evan, this was breaking some of the if-conversion tests. 
llvm-svn: 84868
 2009-10-22 16:52:21 +00:00
Duncan Sands
728eebe8e2 Include config.h in order to have HAVE_STDINT_H be defined. 
In the latest binutils the plugin-api.h needs this - without
it the LLVM gold plugin fails to compile.

llvm-svn: 84861
 2009-10-22 16:03:32 +00:00
Nicolas Geoffray
7955fa8d35 Verify that the function and exception table have been allocated 
before freeing them.

llvm-svn: 84859
 2009-10-22 14:35:57 +00:00
Duncan Sands
15030fc8e7 Check that accessing a struct field that occurs before the start 
of the struct (!) works correctly.

llvm-svn: 84853
 2009-10-22 12:53:25 +00:00
Duncan Sands
7672e59eb8 Test handling of record fields with negative offsets. 
llvm-svn: 84851
 2009-10-22 10:02:10 +00:00
Benjamin Kramer
b159c164d2 Shift art to the right to keep GCC from complaining about multi-line comments. 
llvm-svn: 84849
 2009-10-22 09:28:49 +00:00
Evan Cheng
2edd1efa46 Move if-conversion before post-regalloc scheduling so the predicated instruction get scheduled properly. 
llvm-svn: 84843
 2009-10-22 06:48:32 +00:00
Evan Cheng
d411ac1267 Load / store multiple was missing opportunites when the load / store bundles are at the end of the bb. Test case is already in, the bug is exposed by subsequent commit. 
llvm-svn: 84842
 2009-10-22 06:47:35 +00:00
Chris Lattner
cd80b1711b move another load optimization from instcombine -> libanalysis. 
llvm-svn: 84841
 2009-10-22 06:44:07 +00:00
Chris Lattner
3fb4c19b7d move 'loading i32 from string' optimization from instcombine 
to libanalysis.  Instcombine shrinking... does this even 
make sense???

llvm-svn: 84840
 2009-10-22 06:38:35 +00:00
Chris Lattner
2c8c8533b1 Move some constant folding logic for loads out of instcombine into 
Analysis/ConstantFolding.cpp.  This doesn't change the behavior of
instcombine but makes other clients of ConstantFoldInstruction
able to handle loads.  This was partially extracted from Eli's patch
in PR3152.

llvm-svn: 84836
 2009-10-22 06:25:11 +00:00
Evan Cheng
0c6aa52214 Trim more includes. 
llvm-svn: 84832
 2009-10-22 05:11:00 +00:00
Evan Cheng
166f455456 Trim include. 
llvm-svn: 84831
 2009-10-22 05:08:49 +00:00
Chris Lattner
ff24a8cd93 testcase for PR4678 & rdar://7309675 
llvm-svn: 84830
 2009-10-22 04:47:09 +00:00
Mikhail Glushenkov
5867c0420e Forgot a declaration. 
llvm-svn: 84828
 2009-10-22 04:15:24 +00:00
Mikhail Glushenkov
747a5035b9 Make 'unset_option' work on list options. 
llvm-svn: 84827
 2009-10-22 04:15:07 +00:00
Chris Lattner
e0932e92e9 fix warning. 
llvm-svn: 84826
 2009-10-22 03:42:27 +00:00
Devang Patel
6df2865e24 Fix getHandlerNames() interface. Now it populate clinet supplied small vector with handler names. 
llvm-svn: 84820
 2009-10-22 01:01:24 +00:00
Chris Lattner
e38519a01a llvm-ld doesn't throw. 
llvm-svn: 84819
 2009-10-22 00:52:28 +00:00
Chris Lattner
55ecceb5bf this doesn't use EH either. 
llvm-svn: 84818
 2009-10-22 00:50:24 +00:00
Chris Lattner
824a67ab25 nothing opt uses can throw, remove the try block and -fexceptions when 
building opt.

llvm-svn: 84816
 2009-10-22 00:46:41 +00:00
Chris Lattner
381a6ff95c Add some command line options for twiddling the default data layout 
used by opt when a module doesn't specify one.  Patch from Kenneth Uildriks!

llvm-svn: 84814
 2009-10-22 00:44:10 +00:00