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Author SHA1 Message Date
Evan Cheng
c16d37ead0 Only check if coalescing is worthwhile when the result is targeting a more restrictive register class. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62837 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-23 05:48:59 +00:00
Evan Cheng
3e2351fa2a Update test to reflect command line option name change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62836 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-23 05:45:31 +00:00
Owen Anderson
9ce499ab36 Stage two of fixing pre-alloc-splitting's code size issues: filter out restores that are just 
going to be re-spilled again.

This also helps performance.  Pre-alloc-splitting now seems to be an overall win on SPEC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62834 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-23 03:28:53 +00:00
Evan Cheng
8c08d8c77c Cross register class coalescing. Not yet enabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62832 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-23 02:15:19 +00:00
Devang Patel
a608687f3e Code did not follow associated comment. not a good idea. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62828 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-23 01:25:58 +00:00
Devang Patel
49f38cb32f Set appropriate tag for the composite type. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62827 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-23 01:19:09 +00:00
Chris Lattner
b54bfc2636 a minor tweak to my previous patch, handle the invalidation case 
when there are multiple iterations of the loop.  This fixes PR3375.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62822 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-23 00:27:03 +00:00
Owen Anderson
956ec27a99 Add an initial pass at dead spill/restore removal for pre alloc splitting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62821 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-23 00:23:32 +00:00
Chris Lattner
bbfa244b2f do not sign extend characters input to isprint. This improves 
compatibility with VC++.  Patch by Max Burke!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62813 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 23:38:45 +00:00
Steve Naroff
d94aa403b7 Handful of fixes to the VC project files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62807 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 23:05:37 +00:00
Bob Wilson
67ba22318b Fix a minor bug in DAGCombiner's folding of SELECT. Folding "select C, 0, 1" 
to "C ^ 1" is only valid when C is known to be either 0 or 1.  Most of the
similar foldings in this function only handle "i1" types, but this one appears
intentionally written to handle larger integer types.  If C has an integer
type larger than "i1", this needs to check if the high bits of a boolean
are known to be zero.  I also changed the comment to describe this folding as
"C ^ 1" instead of "~C", since that is what the code does and since the latter
would only be valid for "i1" types.  The good news is that most LLVM targets
use TargetLowering::ZeroOrOneBooleanContent so this change will not disable
the optimization; the bad news is that I've been unable to come up with a
testcase to demonstrate the problem.

I have also removed a "FIXME" comment for folding "select C, X, 0" to "C & X",
since the code looks correct to me.  It could be made more aggressive by not
limiting the type to "i1", but that would then require checking for
TargetLowering::ZeroOrNegativeOneBooleanContent.  Similar changes could be
done for the other SELECT foldings, but it was decided to be not worth the
trouble and complexity (see e.g., r44663).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62790 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 22:05:48 +00:00
Dan Gohman
760f86f339 Don't create ISD::FNEG nodes after legalize if they aren't legal. 
Simplify x+0 to x in unsafe-fp-math mode. This avoids a bunch of
redundant work in many cases, because in unsafe-fp-math mode,
ISD::FADD with a constant is considered free to negate, so the
DAGCombiner often negates x+0 to -0-x thinking it's free, when
in reality the end result is -x, which is more expensive than x.

Also, combine x*0 to 0.

This fixes PR3374.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62789 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 21:58:43 +00:00
Gabor Greif
edc4d69917 introduce a useful abstraction to find out if a Use is in the call position of an instruction 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62788 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 21:35:57 +00:00
Tanya Lattner
1592e5b75a Regenerated configure after backing out 62553 and r62616. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62778 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 20:11:17 +00:00
Tanya Lattner
32aaee684d Revert r62553 and r62616 due to issues with portability. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62777 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 20:09:20 +00:00
Chris Lattner
b67c958342 rename methods in System/Host to be more consistent. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62776 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 19:53:00 +00:00
Devang Patel
5e3c013f81 Do not use buggy llvm-gcc to generate testcases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62770 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 18:28:11 +00:00
Bob Wilson
4c24546238 Add SelectionDAG::getNOT method to construct bitwise NOT operations, 
corresponding to the "not" and "vnot" PatFrags.  Use the new method
in some places where it seems appropriate.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62768 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 17:39:32 +00:00
Duncan Sands
10dfea82d2 Remove no-longer relevant comment. Pointed out 
by Gabor.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62765 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 15:37:29 +00:00
Duncan Sands
4be3a224f8 This passes on linux. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62764 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 15:07:15 +00:00
Sanjiv Gupta
fcc6f1556e Few targets like the tiny little PIC16 have only 16-bit pointers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62763 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 10:14:21 +00:00
Evan Cheng
536ab130ec Eliminate a couple of fields from TargetRegisterClass: SubRegClasses and SuperRegClasses. These are not necessary. Also eliminate getSubRegisterRegClass and getSuperRegisterRegClass. These are slow and their results can change if register file names change. Just use TargetLowering::getRegClassFor() to get the right TargetRegisterClass instead. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62762 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 09:10:11 +00:00
Chris Lattner
e70909b8c9 fix a typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62761 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 07:21:55 +00:00
Chris Lattner
256baa4b1f add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62760 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 07:16:03 +00:00
Chris Lattner
1c2ad9ff86 fix a testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62758 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 07:08:58 +00:00
Chris Lattner
12a7db3830 Fix PR3358, a really nasty bug where recursive phi translated 
analyses could be run without the caches properly sorted.  This
can fix all sorts of weirdness.  Many thanks to Bill for coming
up with the 'issorted' verification idea.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62757 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 07:04:01 +00:00
Tanya Lattner
f9eb2d8aef Bump to 2.6svn. 
Regenerate configure (last regen was with the wrong version).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62751 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 05:17:59 +00:00
Chris Lattner
41b2340b74 Make tblgen more portable, allowing it to build with ICC. 
Patch by Robert Zeh!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62750 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 05:10:16 +00:00
Mike Stump
e50f34a8a7 Don't create .dir files in installation directories. Switch to using 
order-only dependancies for installation directories.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62746 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 03:24:22 +00:00
Bill Wendling
9817b24e74 The operator<() and operator>() were reversing their tests. Have the test the correct way. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62745 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 03:05:10 +00:00
Bill Wendling
d10aacea5e Get rid of warning about implicit 64-to-32 bit conversions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62741 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 02:10:33 +00:00
Dan Gohman
c766f7234a Add a few more notes about LLVM IR features that codegen doesn't 
yet support.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62739 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 01:39:38 +00:00
Oscar Fuentes
1271b9f071 CMake: Tests PERL availability with PERL_EXECUTABLE variable. 
On MSVC 64bits, does not put underscore before the symbol name on the
/INCLUDE linker parameter.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62738 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-22 01:20:31 +00:00
Steve Naroff
2b5326e724 Add explicit this-> (to make the VS compiler happy). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62731 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-21 23:49:23 +00:00
Dan Gohman
dbf5f2557e Recognize inline asm for bswap on x86-64 GLIBC. This allows it 
to be supported in the JIT.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62730 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-21 23:40:54 +00:00
Douglas Gregor
c03c46a6af Fix ilist two-phase name lookup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62724 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-21 22:38:44 +00:00
Dan Gohman
748dbc6afb Fix a missing word. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62720 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-21 21:54:44 +00:00
Dan Gohman
907532dcbb Versions of VIM included with Intrepid and Leopard at least appear 
to handle symlinks just fine, so reword the instructions in the
README accordingly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62719 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-21 21:52:42 +00:00
Dan Gohman
789da2755d Enable syntax highlighting of LLVM and tablegen files by default, 
so that users don't have to copy text from the README to get this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62718 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-21 21:47:51 +00:00
Dan Gohman
5e59c2768d Only set cindent for C and C++ source files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62717 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-21 21:30:25 +00:00
Bill Wendling
708f5a8fb6 Now with RUN line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62716 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-21 21:28:03 +00:00
Bill Wendling
e3b014a05f Run this through -simplifycfg and -mem2reg to test only what we need to test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62714 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-21 21:02:27 +00:00
Dan Gohman
9ad136c851 Add a comment to SelectionDAG::ReplaceAllUsesWith to describe a subtle 
iteraction with SelectionDAG CSE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62713 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-21 20:50:09 +00:00
Dale Johannesen
541ed9fd02 Do not use host floating point types when emitting 
ASCII IR; loading and storing these can change the
bits of NaNs on some hosts.  Remove or add warnings
at a few other places using host floating point;
this is a bad thing to do in general.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62712 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-21 20:32:55 +00:00
Evan Cheng
a095c972cc Also favors NOT64r. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62710 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-21 19:45:31 +00:00
Chris Lattner
0f2d995fd6 fix warning in release-asserts mode and spelling of assert. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62699 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-21 18:38:18 +00:00
Chris Lattner
1e42c5bdf5 add getPointerToGlobal to the C bindings, patch by Lennart Augustsson! 
PR3364


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62697 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-21 18:11:10 +00:00
Chris Lattner
455e9abf36 Remove uses of uint32_t in favor of 'unsigned' for better 
compatibility with cygwin.  Patch by Jay Foad!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62695 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-21 18:09:24 +00:00
Dan Gohman
764fd0cbc8 Simplify ReduceLoadWidth's logic: it doesn't need several different 
special cases after producing the new reduced-width load, because the
new load already has the needed adjustments built into it. This fixes
several bugs due to the special cases, including PR3317.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62692 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-21 15:17:51 +00:00
Dan Gohman
1ef4d8f7ee Fix a recent regression. ClrOpcode is not set for i8; for i8, if 
we want to clear %ah to zero before a division, just use a
zero-extending mov to %al. This fixes PR3366.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62691 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-21 14:50:16 +00:00