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118 Commits

Author SHA1 Message Date
Reid Spencer
85e36e474d Clean up ConstantFoldCastInstruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32672 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-19 07:41:40 +00:00
Reid Spencer
390437fc6d Rewrite ConstantFoldCastInstruction so that it doesn't use any of the 
ConstRules. Remove the casting rules from ConstRules and subclasses. This
cleans up ConstantFolding significantly. Passes all tests.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32671 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-19 03:15:47 +00:00
Reid Spencer
fdf15e1dc8 Revert last patch. ConstantInt isn't quite ready for signlessness. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32650 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-18 04:22:56 +00:00
Reid Spencer
d54d8fa45a Remove the last use of getUnsignedVersion and getSignedVersion from VMCore. 
ConstantInt doesn't care about the sign of the type it represents. It only
cares about the bitwidth so there is no need to make the sign of the type
match the SExt or ZExt constant expression.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32646 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-18 01:11:03 +00:00
Reid Spencer
d977d8651a Replace inferred getCast(V,Ty) calls with more strict variants. 
Rename getZeroExtend and getSignExtend to getZExt and getSExt to match
the the casting mnemonics in the rest of LLVM.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32514 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-12 23:36:14 +00:00
Reid Spencer
8c4fed50e3 Fix constant folding of FP->int due to cut & paste error in last commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32447 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-11 21:27:28 +00:00
Chris Lattner
14f440aae7 Implement correct constant folding of bitcast. This implements 
Transforms/ConstProp/bitcast.ll and fixes
SingleSource/Regression/C/2003-10-12-GlobalVarInitializers


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32438 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-11 18:30:27 +00:00
Chris Lattner
36c2451ddb fix typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32428 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-11 02:16:58 +00:00
Reid Spencer
87d5f6c29f Fix constant folding to deal with external weak global values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32247 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-06 00:25:09 +00:00
Reid Spencer
6f40b831e0 Can't make these fail now with just BitCast. Previous failures must have 
been in conjunction with something else. By right, they should just be
BitCasts.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32219 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-05 07:18:07 +00:00
Reid Spencer
57c699381b Remove the last inferred casts from VMCore. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32213 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-05 03:30:09 +00:00
Reid Spencer
2f8bbf5d65 For PR950: Implement a stub for folding ICmp and FCmp instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32169 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-04 05:19:34 +00:00
Reid Spencer
575d95ce37 Change inferred casts to explicit casts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32165 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-04 02:46:44 +00:00
Chris Lattner
9dec3a2c0c These should be rewritten to fold without using the 'Rules' mechanism, but 
until this happens at least make sext from bool and sitofp from bool do the
right thing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32087 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-01 19:50:54 +00:00
Chris Lattner
5be662505e this logic is broken for trunc to bool, replace the folding logic for trunc 
completely, as it is trivial.  We should probably do this for the rest of the
cast operations.  This fixes ConstProp/2006-12-01-TruncBoolBug.ll.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32081 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-01 19:22:41 +00:00
Chris Lattner
7da3bde866 Fix a typo introduced by the cast patch that horribly broke a lot of vector 
code.  Testcase here: Transforms/ConstProp/2006-11-30-vector-cast.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32062 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-01 05:55:25 +00:00
Reid Spencer
b8611ec8bc Don't fold "ptrtoint GV to bool" since this should be doing a truncate not 
a comparison against zero. Instead fold setne(GV,null) and seteq(GV,null)
to ConstantBool::True or ConstantBool::False, respectively.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32060 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-01 03:56:30 +00:00
Anton Korobeynikov
78ee7b78c3 Introducing external weak linkage. Darwin codegen should be added later. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32052 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-01 00:25:12 +00:00
Reid Spencer
3da59db637 For PR950: 
The long awaited CAST patch. This introduces 12 new instructions into LLVM
to replace the cast instruction. Corresponding changes throughout LLVM are
provided. This passes llvm-test, llvm/test, and SPEC CPUINT2000 with the
exception of 175.vpr which fails only on a slight floating point output
difference.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31931 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-27 01:05:10 +00:00
Jim Laskey
d6c3422e31 Remove redundant <cmath>. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31561 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-08 19:16:44 +00:00
Reid Spencer
3822ff5c71 For PR950: 
This patch converts the old SHR instruction into two instructions,
AShr (Arithmetic) and LShr (Logical). The Shr instructions now are not
dependent on the sign of their operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31542 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-08 06:47:33 +00:00
Reid Spencer
4ab09d4bb7 Remove unused variables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31375 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 08:18:15 +00:00
Reid Spencer
0a783f783c For PR950: 
Replace the REM instruction with UREM, SREM and FREM.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31369 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 01:53:59 +00:00
Reid Spencer
1628cec4d7 For PR950: 
Make necessary changes to support DIV -> [SUF]Div. This changes llvm to
have three division instructions: signed, unsigned, floating point. The
bytecode and assembler are bacwards compatible, however.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31195 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-26 06:15:43 +00:00
Reid Spencer
b83eb6447b For PR950: 
This patch implements the first increment for the Signless Types feature.
All changes pertain to removing the ConstantSInt and ConstantUInt classes
in favor of just using ConstantInt.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31063 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-20 07:07:24 +00:00
Chris Lattner
0eff5ad3db Fix another dtor issue. The function local statics in this function were 
being destroyed at inconvenient times.  Switch to using non-local ManagedStatic
objects, which actually also speeds up ConstRules::get.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30931 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-13 17:22:21 +00:00
Chris Lattner
850ba99cb6 Eliminate ConstantBool::True and ConstantBool::False. Instead, provideConstantBool::getTrue() and ConstantBool::getFalse(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30664 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-28 23:34:49 +00:00
Chris Lattner
a5b07404f7 Add new SetCondInst::isRelational/isEquality methods. Rename 
Instruction::isRelational to Instruction::isComparison.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30444 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-17 19:14:47 +00:00
Chris Lattner
a4f0b3a084 s|llvm/Support/Visibility.h|llvm/Support/Compiler.h| 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29911 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-27 12:54:02 +00:00
Chris Lattner
f190d38055 Use hidden visibility to reduce the sizes of some .o files. This chops 60K off a release llvm-dis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28969 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-06-28 21:38:54 +00:00
Chris Lattner
51df6d5459 Add more anonymous namespaces to make it clear that these are private classes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28901 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-06-21 18:13:36 +00:00
Chris Lattner
00f1023cf8 Add shufflevector support, todo, implement better constant folding. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27510 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-04-08 01:18:18 +00:00
Chris Lattner
f38d471445 Constant fold extractelement(zero, x) -> zero 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27479 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-04-07 04:44:06 +00:00
Chris Lattner
4460f4058f Constant fold casts from things like <4 x int> -> <4 x uint>, likewise int<->fp. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27336 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-04-02 01:38:28 +00:00
Chris Lattner
6fa4cdf92e constant fold extractelement with undef operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27301 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-03-31 18:31:40 +00:00
Robert Bocchino
c152f9cd26 VMCore support for the insertelement operation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25408 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-17 20:07:22 +00:00
Robert Bocchino
bb90a7aa7b Added constant folding support for the extractelement operation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25187 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-10 20:03:46 +00:00
Chris Lattner
2f690c84fa Implement a few symbolic constant folding things. X ? Y : Y is Y. 
Fold:
seteq ({ short }* cast (int 1 to { short }*), { short }* null)
setlt ({ short }* cast (int 1 to { short }*), { short }* cast (int 2 to { short }*))

to false/true.  These last two commonly occur in the output of compilers that
tag integers, like cozmic's scheme compiler.

Tested by Regression/Assembler/ConstantExprFold.llx


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25112 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-05 07:49:30 +00:00
Chris Lattner
2c822cce61 fix some formatting problems 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25110 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-05 07:19:51 +00:00
Chris Lattner
84e1064f45 implement constant folding of ==/!= on constant packed, simplify some code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25074 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-04 02:20:54 +00:00
Chris Lattner
d2a7ea45b0 implement constant folding for the element-wise binary operations 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25073 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-04 02:15:02 +00:00
Chris Lattner
d15ed59734 don't crash when trying to constant fold packed expressions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25072 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-04 02:03:29 +00:00
Jeff Cohen
a97e8db835 Use ANSI-approved way of getting the value infinity (otherwise VC++ won't compile it) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21662 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-03 03:13:01 +00:00
Andrew Lenharth
8b9e3e6511 fold fp div by 0 to inf, the way gcc does. This is legal according to the FP spec 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21655 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-02 21:25:47 +00:00
Reid Spencer
2b2a528374 Shut GCC 4.0 up about classes with virtual functions but no virtual 
destructor.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21510 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-24 22:27:20 +00:00
Misha Brukman
fd93908ae8 Remove trailing whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21427 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-21 23:48:37 +00:00
Chris Lattner
f4aa3351de Fix a nasty thinko in my previous commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19881 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-28 23:17:27 +00:00
Chris Lattner
ce04a6d7f6 Fix ConstProp/2005-01-28-SetCCGEP.ll: indexing over zero sized elements does 
not change the address.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19874 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-28 19:09:51 +00:00
Chris Lattner
488742a28e No need to pessimize current code for future possibilities. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19311 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-06 16:26:38 +00:00
Chris Lattner
ddc4860c1d Fix test/Regression/CFrontend/2003-11-01-EmptyStructCrash.c 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18115 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-22 19:15:27 +00:00