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Author SHA1 Message Date
Bill Wendling
640ccfdd49 Should have XFAILed this test. 
llvm-svn: 66086
 2009-03-04 22:29:34 +00:00
Bill Wendling
2eef9340a8 Temporarily revert r65994. It was causing rdar://6646455. 
llvm-svn: 66083
 2009-03-04 22:02:09 +00:00
Gabor Greif
5291d4d65b ooops, forgot to include the pointless-write eliminator in my previous checkin 
llvm-svn: 66081
 2009-03-04 21:54:31 +00:00
Dale Johannesen
4dbff7846e Add some cautionary comments. 
llvm-svn: 66080
 2009-03-04 21:53:29 +00:00
Chris Lattner
84424b02bb add some helper classes for building light-weight symbolic stack traces 
that get printed when a program crashes.  This is the first step of many.

llvm-svn: 66076
 2009-03-04 21:40:23 +00:00
Dale Johannesen
448293322b Re-commit 65975 and a fix for the problem that 
was causing llvm-gcc to fail to build.  I've
verified it bootstraps now; good enough for me.

llvm-svn: 66073
 2009-03-04 21:24:04 +00:00
Chris Lattner
faf39c40d4 Add a new 'AddSignalHandler' function to Signals.h that allows 
arbitrary functions to be run when a crash happens.  Delete 
RemoveDirectoryOnSignal as it is dead and has never had clients.

Change PrintStackTraceOnErrorSignal to be implemented in terms of
AddSignalHandler.

I updated the Win32 versions of these APIs, but can't test them.
If there are any problems, I'd be happy to fix them as well.

llvm-svn: 66072
 2009-03-04 21:21:36 +00:00
Dan Gohman
5eb18fa0bf Fix this comment. 
llvm-svn: 66065
 2009-03-04 20:50:23 +00:00
Dan Gohman
70fd52251c Add an assertion for a condition that's always true, and not 
immediately obvious.

llvm-svn: 66062
 2009-03-04 20:49:01 +00:00
Gabor Greif
9a8e64c76f Give sentinel traits the right to determine the policy where the sentinel is kept. 
This should result in less indirect memory accesses, less dead writes and tighter code.

llvm-svn: 66061
 2009-03-04 20:36:44 +00:00
Dan Gohman
31fb085c2e Re-apply 66008, now that the unfoldMemoryOperand bug is fixed. 
llvm-svn: 66058
 2009-03-04 19:44:21 +00:00
Dan Gohman
f41e54c5af Correct this comment. 
llvm-svn: 66057
 2009-03-04 19:24:25 +00:00
Dan Gohman
04453ca36c When using MachineInstr operand indices on SDNodes, the number 
of MachineInstr def operands must be subtracted out. This bug
was uncovered by the recent x86 EFLAGS optimization. Before
that, the only instructions that ever needed unfolding were
things like CMP32rm, where NumDefs is zero.

llvm-svn: 66056
 2009-03-04 19:23:38 +00:00
Chris Lattner
9cfff838eb complete comment. 
llvm-svn: 66055
 2009-03-04 19:23:25 +00:00
Chris Lattner
a0d9cc96fe this wasn't intended to be committed. 
llvm-svn: 66054
 2009-03-04 19:22:30 +00:00
Chris Lattner
5051e7afde Fix PR3720 by properly propagating alignment information from memcpy/memmove 
onto element accesses.

llvm-svn: 66053
 2009-03-04 19:20:50 +00:00
Nate Begeman
511a668cd1 Fix a thinko in the JIT where the address of a GV was only recorded in the map 
on failure to resolve it.
Do not abort on failure to resolve an external symbol when using dlsym stubs,
  since the symbol may not be in the JIT's address space.  Just use 0.
Allow dlsym stubs to differentiate between GlobalVars and Functions.

llvm-svn: 66050
 2009-03-04 19:10:38 +00:00
Bob Wilson
b75225556d Fix BuildVectorSDNode::isConstantSplat to handle one-element vectors. 
It is an error to call APInt::zext with a size that is equal to the value's
current size, so use zextOrTrunc instead.

llvm-svn: 66039
 2009-03-04 17:47:01 +00:00
Mike Stump
979a5ea539 .emacs file bits for automatically setting the llvm.org coding style. Thanks Anton. 
llvm-svn: 66032
 2009-03-04 14:14:37 +00:00
Owen Anderson
fb7f64ea0d Add a restore folder, which shaves a dozen or so machineinstrs off oggenc. Update a testcase to check this. 
llvm-svn: 66029
 2009-03-04 08:52:31 +00:00
Gabor Greif
f8d2f7429d "Ghostify" embedded sentinels. This is a real win in all cases 
because less bytes are allocated and subobject construction is gone.
For reference how it works, see BasicBlock.h.
Btw. it is very assuring to see that somebody has invented
this ilist-embedded sentinel technique before me :-)

llvm-svn: 66026
 2009-03-04 06:57:48 +00:00
Evan Cheng
7d9019d0f3 Fix PR3666: isel calls to constant addresses. 
llvm-svn: 66024
 2009-03-04 06:48:53 +00:00
Eli Friedman
1bed40b86a PR3686: make the legalizer handle bitcast from i80 to x86 long double. 
llvm-svn: 66021
 2009-03-04 06:23:34 +00:00
Dan Gohman
6831e2c2a6 Revert r66004 for now; it's causing a variety of test failures. 
llvm-svn: 66008
 2009-03-04 03:54:19 +00:00
Evan Cheng
32eef2f73f Rename test. 
llvm-svn: 66006
 2009-03-04 02:47:25 +00:00
Dan Gohman
c6c669cc1e Teach the x86 backend to eliminate "test" instructions by using the EFLAGS 
result from add, sub, inc, and dec instructions in simple cases.

llvm-svn: 66004
 2009-03-04 02:33:24 +00:00
Dale Johannesen
8ca4d24371 Revert unintended commmit. 
llvm-svn: 66001
 2009-03-04 02:09:48 +00:00
Dale Johannesen
c6bfdb8253 Skip ptr-to-ptr bitcasts when counting in another case. 
llvm-svn: 66000
 2009-03-04 02:06:53 +00:00
Dale Johannesen
e184480072 Always skip ptr-to-ptr bitcasts when counting, 
per Chris' suggestion.  Slightly faster.

llvm-svn: 65999
 2009-03-04 01:53:05 +00:00
Evan Cheng
db402a7a49 Fix PR3701. 1. X86 target renamed eflags register to flags. This matches what llvm-gcc generates so codegen knows flags register is being clobbered by inline asm. 2. BURR scheduler should also check if inline asm nodes can clobber "live" physical registers. Previously it was only checking target nodes with implicit defs. 
llvm-svn: 65996
 2009-03-04 01:41:49 +00:00
Devang Patel
94ef615585 If a global constant is dead then global's debug info should not prevent the optimizer in deleting the global. And while deleting global, delete global's debug info also. 
llvm-svn: 65994
 2009-03-04 01:22:23 +00:00
Dale Johannesen
a6f7a45366 Make my earlier patch to skip debug intrinsics 
when counting work; it was only off by 1.

llvm-svn: 65993
 2009-03-04 01:20:34 +00:00
Dale Johannesen
b26bc461f0 Temporarily revert 65975, which breaks the llvm-gcc build. 
While the patch is clearly correct in itself, it's become
apparent other places are assuming debug intrinsics are
marked as touching memory...this needs more testing.

llvm-svn: 65992
 2009-03-04 01:14:28 +00:00
Bill Wendling
93eeea0493 The DAG combiner was performing a BT combine. The BT combine had a value of -1, 
so it changed it into a 31 via the TLO.ShrinkDemandedConstant() call. Then it
would go through the DAG combiner again. This time it had a value of 31, which
was turned into a -1 by TLI.SimplifyDemandedBits(). This would ping pong
forever.

Teach the TLO.ShrinkDemandedConstant() call not to lower a value if the demanded
value is an XOR of all ones.

llvm-svn: 65985
 2009-03-04 00:18:06 +00:00
Dale Johannesen
e611f70764 Marking debug info intrinsics as not touching memory 
caused them to be considered trivially dead.  Fix this.

llvm-svn: 65979
 2009-03-03 23:30:00 +00:00
Dale Johannesen
81b6cd8ce5 Instruction counters must skip the bitcasts that 
feed into llvm.dbg.declare nodes, as well as
the debug directives themselves.

llvm-svn: 65976
 2009-03-03 22:36:47 +00:00
Devang Patel
dd0b382f55 Dbg Intrinsics do not access memory. 
llvm-svn: 65975
 2009-03-03 22:33:54 +00:00
Devang Patel
9b7c78086b Recursively remove dead argument while removing llvm.dbg.declare intrinsic. 
llvm-svn: 65971
 2009-03-03 21:31:02 +00:00
Dale Johannesen
ceed180d4c When removing a store to an alloca that has only one 
use, check also for the case where it has two uses,
the other being a llvm.dbg.declare.  This is needed so
debug info doesn't affect codegen.

llvm-svn: 65970
 2009-03-03 21:26:39 +00:00
Chris Lattner
db4a8af064 don't #include a header into the middle of an anon namespace. 
llvm-svn: 65967
 2009-03-03 20:10:23 +00:00
Dan Gohman
3c6c7754b2 Add '(implicit EFLAGS)' for AND, OR, XOR, NEG, INC, and DEC 
instructions. These aren't used yet.

llvm-svn: 65965
 2009-03-03 19:53:46 +00:00
Bob Wilson
17cf012d93 Use early exit to reduce indentation. No functional change. 
llvm-svn: 65962
 2009-03-03 19:26:27 +00:00
Bill Wendling
7fdda71ad7 Remove accidental check-ins in r65960. :-( 
llvm-svn: 65961
 2009-03-03 19:25:16 +00:00
Bill Wendling
8244b700bf Use > instead of >=. We want to promote aggregates of 128-bytes. 
llvm-svn: 65960
 2009-03-03 19:18:49 +00:00
Dan Gohman
cf43db79cc Make a comment less terse. 
llvm-svn: 65953
 2009-03-03 17:44:54 +00:00
Bill Wendling
a77bedb70b Reapply r65755, but reversing "<" to ">=". 
llvm-svn: 65945
 2009-03-03 12:12:58 +00:00
Mikhail Glushenkov
06f114ba92 Add example/Skeleton. 
This is a template that can be used to build your own LLVMC-based drivers.
It can be also useful as a "bare-bones" LLVMC.

llvm-svn: 65944
 2009-03-03 11:02:48 +00:00
Mikhail Glushenkov
1777b8c113 Comment fixes. 
llvm-svn: 65943
 2009-03-03 10:04:57 +00:00
Mikhail Glushenkov
a4a724f737 Oops. 
llvm-svn: 65942
 2009-03-03 10:04:23 +00:00
Mikhail Glushenkov
86e63a12c5 Use LLVMLIBS instead of USEDLIBS. 
Since this Makefile is supposed to be usable from LLVM-based projects not in the
tree, LLVMLIBS should be used instead of USEDLIBS. This depends on my previous
fix to Makefile.rules.

llvm-svn: 65941
 2009-03-03 10:03:53 +00:00