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6461 Commits

Author SHA1 Message Date
Duncan Sands
4782b305c2 If the target of an alias has internal linkage, then the 
alias can be morphed into the target.  Implement this
transform, and fix a crash in the existing transform at
the same time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64583 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-15 09:56:08 +00:00
Evan Cheng
b599979ab5 Fix PR3522. It's not safe to sink into landing pad BB's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64582 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-15 08:36:12 +00:00
Evan Cheng
8f40afe62d Fix pr3571: If stride is a value defined by an instruction, make sure it dominates the loop preheader. When IV users are strength reduced, the stride is inserted into the preheader. It could create a use before def situation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64579 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-15 06:06:15 +00:00
Dan Gohman
aa03649af2 Extend the IndVarSimplify support for promoting induction variables: 
- Test for signed and unsigned wrapping conditions, instead of just
   testing for non-negative induction ranges. 
 - Handle loops with GT comparisons, in addition to LT comparisons.
 - Support more cases of induction variables that don't start at 0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64532 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-14 02:31:09 +00:00
Dale Johannesen
b463272fbb Testcase for llvm-gcc 64510. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64511 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-14 00:19:28 +00:00
Evan Cheng
c7ce29b04f Teach x86 target -soft-float. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64496 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-13 22:36:38 +00:00
Nick Lewycky
02b6a6a75f Mark strto* as readonly when the endptr is null. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64460 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-13 17:08:33 +00:00
Nick Lewycky
4c49841f34 On strtod and friends, mark 'endptr' nocapture in the function prototype, and 
mark the first argument nocapture if endptr=NULL for each particular call.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64453 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-13 15:31:46 +00:00
Nick Lewycky
8968a07768 Reapply r64300: 
Make sure the SCC pass manager initializes any contained
function pass managers.  Without this, simplify-libcalls
would add nocapture attributes when run on its own, but
not when run as part of -std-compile-opts or similar.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64443 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-13 07:15:53 +00:00
Nick Lewycky
826f7cebfd BasicAA was making the assumption that a local allocation which hadn't escaped 
couldn't ever be the return of call instruction. However, it's quite possible
that said local allocation is itself the return of a function call. That's
what malloc and calloc are for, actually.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64442 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-13 07:06:27 +00:00
Dan Gohman
9194e8b0c8 Fix the code that checked if a SCEVAddRecExpr Start contains an 
addrec in a different loop to check the value being added to
the accumulated Start value, not the Start value before it has
the new value added to it. This prevents LSR from going crazy
on the included testcase. Dale, please review.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64440 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-13 03:58:31 +00:00
Dan Gohman
bc511725f0 Fix LSR's IV sorting function to explicitly sort by bitwidth 
after sorting by stride value. This prevents it from missing
IV reuse opportunities in a host-sensitive manner.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64415 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-13 00:26:43 +00:00
Dan Gohman
c2390b14c9 Teach IndVarSimplify to optimize code using the C "int" type for 
loop induction on LP64 targets. When the induction variable is
used in addressing, IndVars now is usually able to inserst a
64-bit induction variable and eliminates the sign-extending cast.
This is also useful for code using C "short" types for
induction variables on targets with 32-bit addressing.

Inserting a wider induction variable is easy; the tricky part is
determining when trunc(sext(i)) expressions are no-ops. This
requires range analysis of the loop trip count. A common case is
when the original loop iteration starts at 0 and exits when the
induction variable is signed-less-than a fixed value; this case
is now handled.

This replaces IndVarSimplify's OptimizeCanonicalIVType. It was
doing the same optimization, but it was limited to loops with
constant trip counts, because it was running after the loop
rewrite, and the information about the original induction
variable is lost by that point.

Rename ScalarEvolution's executesAtLeastOnce to
isLoopGuardedByCond, generalize it to be able to test for
ICMP_NE conditions, and move it to be a public function so that
IndVars can use it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64407 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-12 22:19:27 +00:00
Nate Begeman
0f123cf732 Add suppport for ConstantExprs of shufflevectors whose result type is not equal to the 
type of the vectors being shuffled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64401 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-12 21:28:33 +00:00
Dale Johannesen
78e3e521cd Arrange to print constants that match "n" and "i" constraints 
in inline asm as signed (what gcc does).  Add partial support
for x86-specific "e" and "Z" constraints, with appropriate
signedness for printing.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64400 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-12 20:58:09 +00:00
Chris Lattner
1823c92aa7 fix the X86 backend to just drop llvm.declare nodes for VLAs instead of 
leaving them in the DAG and then getting selection errors.  This is a 
fix for PR3538.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64382 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-12 17:33:11 +00:00
Chris Lattner
327e98fae1 add PR 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64377 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-12 17:04:57 +00:00
Evan Cheng
8679119f4b It's (currently) not safe to keep certain physical registers live across basic blocks, e.g. x86 fp stack registers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64374 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-12 10:32:17 +00:00
Evan Cheng
8182347d70 Replace one of burr scheduling heuristic with something more sensible. Now calcMaxScratches simply compute the number of true data dependencies. This actually improve a couple of tests in dejagnu suite as many tests in llvm nightly test suite. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64369 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-12 08:59:45 +00:00
Chris Lattner
af9985c6b9 Fix a nasty bug (PR3550) where the inline pass could incorrectly mark 
calls with the tail marker when inlining them through an invoke.  Patch,
testcase, and perfect analysis by Jay Foad!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64364 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-12 07:06:42 +00:00
Chris Lattner
65c02fbf9b fix PR3537: if resetting bbi back to the start of a block, we need to 
forget about already inserted expressions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64362 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-12 06:56:08 +00:00
Chris Lattner
afa77434bb rename test to avoid messing with tab completion of dates. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64361 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-12 06:54:55 +00:00
Evan Cheng
ce7f5a1e50 Remove a bogus assertion. It's possible a live-in available value is used by a previous instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64339 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-11 23:41:57 +00:00
Dan Gohman
c8db34cb07 Don't use special heuristics for nodes with no data predecessors 
unless they actually have data successors, and likewise for nodes
with no data successors unless they actually have data precessors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64327 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-11 21:29:39 +00:00
Daniel Dunbar
dce5e74162 Update to match space changes in .ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64322 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-11 20:48:21 +00:00
Dale Johannesen
85b0edec46 Make a transformation added in 63266 a bit less aggressive. 
It was transforming (x&y)==y to (x&y)!=0 in the case where
y is variable and known to have at most one bit set (e.g. z&1).
This is not correct; the expressions are not equivalent when y==0.
I believe this patch salvages what can be salvaged, including
all the cases in bt.ll.  Dan, please review.
Fixes gcc.c-torture/execute/20040709-[12].c



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64314 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-11 19:19:41 +00:00
Bill Wendling
905c7e9a04 Revert r64300 and r64301. These were causing the following errors respectively: 
During llvm-gcc bootstrap:

Undefined symbols:
  "llvm::FPPassManager::doFinalization(llvm::Module&)", referenced from:
      (anonymous namespace)::CGPassManager::doFinalization(llvm::CallGraph&, llvm::Module&)
        in libLLVMipa.a(CallGraphSCCPass.o)
  "llvm::FPPassManager::doInitialization(llvm::Module&)", referenced from:
      (anonymous namespace)::CGPassManager::doInitialization(llvm::CallGraph&, llvm::Module&)
        in libLLVMipa.a(CallGraphSCCPass.o)
ld: symbol(s) not found
collect2: ld returned 1 exit status
make[3]: *** [/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore.roots/llvmCore~obj/obj-llvm/Release/bin/opt] Error 1

During an LLVM release build:

/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/Release/bin/tblgen -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86 -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target -gen-register-desc -o  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Target/X86/Release/X86GenRegisterInfo.inc.tmp /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86/X86.td
llvm[3]: Building X86.td instruction names with tblgen
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/Release/bin/tblgen -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86 -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target -gen-instr-enums -o  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Target/X86/Release/X86GenInstrNames.inc.tmp /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86/X86.td
llvm[3]: Building X86.td instruction information with tblgen
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/Release/bin/tblgen -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86 -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target -gen-instr-desc -o  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Target/X86/Release/X86GenInstrInfo.inc.tmp /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86/X86.td
llvm[3]: Building X86.td assembly writer with tblgen
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/Release/bin/tblgen -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86 -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target -gen-asm-writer -o  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Target/X86/Release/X86GenAsmWriter.inc.tmp /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86/X86.td
llvm[3]: Compiling InstructionCombining.cpp for Release build 
if /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmgcc42.roots/llvmgcc42~dst/Developer/usr/bin/llvm-g++-4.2 -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/include -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Transforms/Scalar  -D_DEBUG  -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -O3  -fno-exceptions  -Woverloaded-virtual -pedantic -Wall -W -Wwrite-strings -Wno-long-long -Wunused -Wno-unused-parameter  -fstrict-aliasing -Wstrict-aliasing -c -MMD -MP -MF "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.d.tmp" -MT "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.lo" -MT "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.o" -MT "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.d" /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Transforms/Scalar/InstructionCombining.cpp -o /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.o ; \
           then /bin/mv -f "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.d.tmp" "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Trans



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64311 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-11 18:19:24 +00:00
Duncan Sands
af068750a7 Make sure the SCC pass manager initializes any contained 
function pass managers.  Without this, simplify-libcalls
would add nocapture attributes when run on its own, but
not when run as part of -std-compile-opts or similar.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64300 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-11 09:58:43 +00:00
Evan Cheng
752272a5e5 Implement PR3495: local spiller optimization. The local spiller can now keep availability information over BB boundaries. It visits BB's in depth first order. After visiting a BB if it find a successor which has a single predecessor it visits the successor next without clearing the availability information. This allows the successor to omit reloads or change them into copies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64298 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-11 08:24:21 +00:00
Devang Patel
bd75b8345f If llvm.dbg.region.end is disappearing then remove corresponding llvm.dbg.func.start also. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64278 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-11 01:29:06 +00:00
Devang Patel
0464a1431b Ignore dbg intrinsic while folding unconditional branch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64242 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-10 22:14:17 +00:00
Evan Cheng
1d76864df3 Handle llvm.x86.sse2.maskmov.dqu in 64-bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64240 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-10 22:06:28 +00:00
Duncan Sands
f5f0a1fe0d This is now done using a real i33, rather than 
an emulated one.  Adjust the check.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64236 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-10 20:44:15 +00:00
Evan Cheng
f0e366a929 Fix PR3457: Ignore control successors when looking for closest scheduled successor. A control successor doesn't read result(s) produced by the scheduling unit being evaluated. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64210 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-10 08:30:11 +00:00
Devang Patel
f66d7b5a51 Do not clone llvm.dbg.func.start and corresponding llvm.dbg.region.end during inlining. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64209 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-10 07:48:18 +00:00
Devang Patel
4afc90dacf Enable scalar replacement of AllocaInst whose one of the user is dbg info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64207 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-10 07:00:59 +00:00
Evan Cheng
a0eedac226 Implement FpSET_ST1_*. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64186 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-09 23:32:07 +00:00
Dale Johannesen
1de17d574c Fix PR 3471, and some cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64177 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-09 22:14:15 +00:00
Evan Cheng
b1032a8a2f Make sure constant subscript is truncated to ptr size if it may not fit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64163 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-09 20:54:38 +00:00
Duncan Sands
f60df7f486 Testcase for PR2437. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64131 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-09 09:41:49 +00:00
Evan Cheng
8f0d99e463 Re-enable machine sinking pass now that the coalescer bugs and the AnalyzeBrnach bug are fixed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64126 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-09 08:45:39 +00:00
Bill Wendling
171de4fa94 Rename dg.exp to llvmc.exp. This is so I can ignore it during a make check if I want to. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64103 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-08 22:52:50 +00:00
Mikhail Glushenkov
6dff394afd The 'false.c' test must depend on llvm-g++. 
Also, turn on Objective-C/C++ tests.
This should fix http://llvm.org/bugs/show_bug.cgi?id=3499.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64084 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-08 11:44:37 +00:00
Evan Cheng
0a1fcce092 Fix PR3486. Fix a bug in code that manually patch physical register live interval after its sub-register is coalesced with a virtual register. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64082 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-08 11:04:35 +00:00
Evan Cheng
77fde2cbb1 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64073 91177308-0d34-0410-b5e6-96231b3b80d8 2009-02-08 07:48:37 +00:00
Bill Wendling
7f51fd3ea9 Revert r63999. It was breaking self-hosting builds. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64062 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-08 00:58:05 +00:00
Chris Lattner
ed54534a82 testcase for r64049 of llvm-gcc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64050 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-07 23:37:03 +00:00
Mon P Wang
6753f959d2 Instrcombine should not change load(cast p) to cast(load p) if the cast 
changes the address space of the pointer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64035 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-07 22:19:29 +00:00
Evan Cheng
c963b638c7 Enable machine sinking pass in non-fast mode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63999 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-07 01:57:46 +00:00
Devang Patel
d96c60df3f Ignore DbgInfoIntrinsics. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63923 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-06 06:19:06 +00:00