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Author SHA1 Message Date
Bill Wendling
e562149cdb Add comment to emphasize that the while body is empty. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66115 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-05 01:08:35 +00:00
Dale Johannesen
a0a6637b25 Fix another case where a dbg.declare meant something 
had 2 uses instead of 1.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66112 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-05 00:39:02 +00:00
Bill Wendling
85435046ac Should have XFAILed this test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66086 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 22:29:34 +00:00
Bill Wendling
380c3ca093 Temporarily revert r65994. It was causing rdar://6646455. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66083 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 22:02:09 +00:00
Gabor Greif
f3841fcbd5 ooops, forgot to include the pointless-write eliminator in my previous checkin 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66081 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 21:54:31 +00:00
Dale Johannesen
508d338fee Add some cautionary comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66080 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 21:53:29 +00:00
Chris Lattner
e97c733541 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66076 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 21:40:23 +00:00
Dale Johannesen
6129e24e49 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66073 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 21:24:04 +00:00
Chris Lattner
35033a5876 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66072 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 21:21:36 +00:00
Dan Gohman
fd0339933b Fix this comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66065 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 20:50:23 +00:00
Dan Gohman
bc10b8c6c7 Add an assertion for a condition that's always true, and not 
immediately obvious.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66062 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 20:49:01 +00:00
Gabor Greif
c23b8719ef 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66061 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 20:36:44 +00:00
Dan Gohman
076aee32e8 Re-apply 66008, now that the unfoldMemoryOperand bug is fixed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66058 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 19:44:21 +00:00
Dan Gohman
fc53fc657e Correct this comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66057 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 19:24:25 +00:00
Dan Gohman
b37a8206b6 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66056 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 19:23:38 +00:00
Chris Lattner
88fe1ad187 complete comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66055 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 19:23:25 +00:00
Chris Lattner
0ff83ab985 this wasn't intended to be committed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66054 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 19:22:30 +00:00
Chris Lattner
1541e0f7da Fix PR3720 by properly propagating alignment information from memcpy/memmove 
onto element accesses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66053 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 19:20:50 +00:00
Nate Begeman
66941988de 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66050 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 19:10:38 +00:00
Bob Wilson
d344b884dd 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66039 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 17:47:01 +00:00
Mike Stump
675e754c61 .emacs file bits for automatically setting the llvm.org coding style. Thanks Anton. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66032 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 14:14:37 +00:00
Owen Anderson
c93023a89e Add a restore folder, which shaves a dozen or so machineinstrs off oggenc. Update a testcase to check this. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66029 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 08:52:31 +00:00
Gabor Greif
c7f6b8c5d4 "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 :-)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66026 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 06:57:48 +00:00
Evan Cheng
ae3f2b6c77 Fix PR3666: isel calls to constant addresses. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66024 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 06:48:53 +00:00
Eli Friedman
27759f41ca PR3686: make the legalizer handle bitcast from i80 to x86 long double. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66021 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 06:23:34 +00:00
Dan Gohman
29582d1223 Revert r66004 for now; it's causing a variety of test failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66008 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 03:54:19 +00:00
Evan Cheng
10029df79a Rename test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66006 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 02:47:25 +00:00
Dan Gohman
12bbc52aa7 Teach the x86 backend to eliminate "test" instructions by using the EFLAGS 
result from add, sub, inc, and dec instructions in simple cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66004 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 02:33:24 +00:00
Dale Johannesen
0744f09efc Revert unintended commmit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66001 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 02:09:48 +00:00
Dale Johannesen
d9c05d7711 Skip ptr-to-ptr bitcasts when counting in another case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66000 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 02:06:53 +00:00
Dale Johannesen
cdb16aa5ab Always skip ptr-to-ptr bitcasts when counting, 
per Chris' suggestion.  Slightly faster.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65999 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 01:53:05 +00:00
Evan Cheng
599a6a88ce 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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65996 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 01:41:49 +00:00
Devang Patel
7f6179d1d8 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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65994 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 01:22:23 +00:00
Dale Johannesen
0d6596b7bf Make my earlier patch to skip debug intrinsics 
when counting work; it was only off by 1.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65993 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 01:20:34 +00:00
Dale Johannesen
160ae86936 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65992 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 01:14:28 +00:00
Bill Wendling
36ae6c1827 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65985 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-04 00:18:06 +00:00
Dale Johannesen
127a7936de Marking debug info intrinsics as not touching memory 
caused them to be considered trivially dead.  Fix this.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65979 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 23:30:00 +00:00
Dale Johannesen
4ded40a44d Instruction counters must skip the bitcasts that 
feed into llvm.dbg.declare nodes, as well as
the debug directives themselves.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65976 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 22:36:47 +00:00
Devang Patel
70b5e04d85 Dbg Intrinsics do not access memory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65975 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 22:33:54 +00:00
Devang Patel
9adb01cbc3 Recursively remove dead argument while removing llvm.dbg.declare intrinsic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65971 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 21:31:02 +00:00
Dale Johannesen
4945c65784 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65970 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 21:26:39 +00:00
Chris Lattner
44e3dd1672 don't #include a header into the middle of an anon namespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65967 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 20:10:23 +00:00
Dan Gohman
09a2609e20 Add '(implicit EFLAGS)' for AND, OR, XOR, NEG, INC, and DEC 
instructions. These aren't used yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65965 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 19:53:46 +00:00
Bob Wilson
f2950b0051 Use early exit to reduce indentation. No functional change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65962 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 19:26:27 +00:00
Bill Wendling
1c85503e38 Remove accidental check-ins in r65960. :-( 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65961 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 19:25:16 +00:00
Bill Wendling
3aaf5d9933 Use > instead of >=. We want to promote aggregates of 128-bytes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65960 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 19:18:49 +00:00
Dan Gohman
12f7cab423 Make a comment less terse. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65953 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 17:44:54 +00:00
Bill Wendling
5a377cb27b Reapply r65755, but reversing "<" to ">=". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65945 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 12:12:58 +00:00
Mikhail Glushenkov
283bb58332 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65944 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 11:02:48 +00:00
Mikhail Glushenkov
03c050f018 Comment fixes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65943 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-03 10:04:57 +00:00