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80 Commits

Author SHA1 Message Date
Chris Lattner
11c0e5b684 Move the folding of gep null, 0, 0, 0 to a place where it can be shared and 
enjoyed by all, fixing a fixme.  Add an assert

llvm-svn: 11505
 2004-02-16 20:46:13 +00:00
Chris Lattner
363cd9e4b8 Add a new ConstantAggregateZero class, to fix PR239. This makes zero 
initializers for constant structs and arrays take constant space, instead of
space proportinal to the number of elements.  This reduces the memory usage of
the LLVM compiler by hundreds of megabytes when compiling some nasty SPEC95
benchmarks.

llvm-svn: 11470
 2004-02-15 05:53:04 +00:00
Chris Lattner
0f819b9523 ConstantArray::get and ConstantStruct::get now just return pointers to 
'Constant', instead of specific subclass pointers.  In the future, these will
return an instance of ConstantAggregateZero if all of the inputs are zeros.

llvm-svn: 11467
 2004-02-15 04:14:47 +00:00
Chris Lattner
52cc69f39e Remove dependence on return type of ConstantStruct::get 
llvm-svn: 11466
 2004-02-15 04:07:32 +00:00
Chris Lattner
3fd2b573f1 Remove dependence on the return type of ConstantArray::get 
llvm-svn: 11463
 2004-02-15 04:05:58 +00:00
Chris Lattner
c8d0942108 Keep a cache of non-abstract null arrays and structs. This speeds up llvm-dis 
from 16.57 -> 13.46s on 129.compress.

llvm-svn: 11462
 2004-02-15 02:46:46 +00:00
Chris Lattner
16690fad3d Adjust to the changed StructType interface. In particular, getElementTypes() is gone. 
llvm-svn: 11228
 2004-02-09 04:37:31 +00:00
Chris Lattner
a61cda01c2 Second half of a fix for PR218 & test/Regression/Assembler/2004-02-01-NegativeZero.llx. 
Basically we store floating point values as their integral components, instead of relying
on the semantics of floating point < to differentiate between values.  This is likely to
make the map search be faster anyway.

llvm-svn: 11064
 2004-02-01 22:49:04 +00:00
Chris Lattner
317a6fec82 Fix a problem brian ran into with the bytecode reader asserting. It turns 
out that the problem was actually the writer writing out a 'null' value
because it didn't normalize it.  This fixes:
test/Regression/Assembler/2004-01-22-FloatNormalization.ll

llvm-svn: 10967
 2004-01-23 00:55:21 +00:00
Chris Lattner
8767bd75e4 Fix bug in previous checkin: Demorgan would be ashamed of me, I need to 
lay off the crack.

llvm-svn: 10855
 2004-01-14 17:51:53 +00:00
Chris Lattner
a991025919 Implement ConstantArray::isString 
llvm-svn: 10851
 2004-01-14 17:06:38 +00:00
Chris Lattner
b4e121c364 Rename ConstantHandling.* -> ConstantFolding.* 
Move a bunch of (now) private stuff from ConstantFolding.h into
ConstantFolding.cpp.

This _finally_ gets us to a place where we have a sane constant folder.  The
rules are:

1. LLVM clients now use ConstantExpr::get* methods to fold constants.  If they
   cannot be folded, a constantexpr is created, so these methods always return
   valid Constant*'s.
2. The implementation of ConstantExpr::get* uses the functions exposed by
   ConstantFolding.h to try to fold constants.  If they cannot be folded,
   they should return a null pointer.
3. The implementation of ConstantFolding can do whatever it wants, and only
   has one client (Constants.cpp)

This cuts down on the wierd dependencies, and eliminates the two interfaces.
The old constanthandling interface was especially bad for clients to use
because almost none of them took the failure condition into consideration,
thus leading to obscure problems.

llvm-svn: 10807
 2004-01-12 21:13:12 +00:00
Chris Lattner
d757923e11 Move ConstantHandling.h into lib/VMCore and out of include/llvm 
llvm-svn: 10805
 2004-01-12 20:48:11 +00:00
Chris Lattner
b420886171 Eliminate ConstantFoldShiftInstruction reference 
llvm-svn: 10801
 2004-01-12 20:40:42 +00:00
Chris Lattner
35771f4fd2 Fix out of date comment, remove use of ConstantExpr::getShift 
llvm-svn: 10794
 2004-01-12 19:12:58 +00:00
Chris Lattner
52759f5c5e Make ConstantExpr::get work for shifts as well 
llvm-svn: 10790
 2004-01-12 19:04:55 +00:00
Chris Lattner
a1da49a55c Finegrainify namespacification 
llvm-svn: 10131
 2003-11-21 20:23:48 +00:00
Chris Lattner
1f762c7571 The ConstantPointer class is now gone. 
llvm-svn: 10057
 2003-11-17 19:47:21 +00:00
Brian Gaeke
d25f86d683 Put all LLVM code into the llvm namespace, as per bug 109. 
llvm-svn: 9903
 2003-11-11 22:41:34 +00:00
Chris Lattner
352ad83271 Add support for constant expr shifts 
llvm-svn: 9735
 2003-11-05 19:53:03 +00:00
Chris Lattner
4347464e2a Fix bug: instcombine/2003-10-23-InstcombineNullFail.ll 
llvm-svn: 9403
 2003-10-23 05:21:48 +00:00
Chris Lattner
53d92d23b0 Fix problem which effected linking apache 
llvm-svn: 9335
 2003-10-21 17:39:59 +00:00
John Criswell
b402729b30 Added LLVM project notice to the top of every C++ source file. 
Header files will be on the way.

llvm-svn: 9298
 2003-10-20 19:43:21 +00:00
Chris Lattner
bd123c6e51 Add a sanity check for constant expression casts 
llvm-svn: 8951
 2003-10-07 22:19:19 +00:00
Chris Lattner
b5f0d32b91 Type tables are now AbstractTypeUsers. This allows them to merge together 
constants as necessary due to type resolution.  With this change, the
following spec benchmarks now link: 176.gcc, 177.mesa, 252.eon,
253.perlbmk, & 300.twolf.  IOW, all SPEC INT and FP benchmarks now link.

llvm-svn: 8853
 2003-10-05 00:17:43 +00:00
Chris Lattner
06dbcc0540 Minor random speedup: make Constant::getNullValue only call ConstantFOO::get 
once!

llvm-svn: 8845
 2003-10-03 19:34:51 +00:00
Chris Lattner
101d5058cb These methods are dead, remove them. Because the bodies will soon be 
ressurected, just ifdef them out for now.

llvm-svn: 8840
 2003-10-03 18:39:57 +00:00
Chris Lattner
83856d0df1 There is no reason for Value to be an AbstractTypeUser. This just makes things 
significantly more complete.  Instead, just make DerivedType's AbstractTypeUser's,
and make Value contain a PATypeHolder.

llvm-svn: 8828
 2003-10-02 19:44:40 +00:00
Chris Lattner
286e92a9ef Implement "unsafe" replaceAllUsesWWith stuff for use during type resolution. 
llvm-svn: 8209
 2003-08-29 05:36:46 +00:00
Chris Lattner
a2a7b891e5 Refactor code to make it useful outside of Constants.cpp 
llvm-svn: 8205
 2003-08-29 05:09:37 +00:00
Misha Brukman
cda7f97dbb The word dependent' has no a'. 
llvm-svn: 8030
 2003-08-21 22:14:26 +00:00
Chris Lattner
9fed232059 Fix linking bug in xboard 
llvm-svn: 7952
 2003-08-18 16:54:48 +00:00
Chris Lattner
6457a808f0 Fix a bug that brian reported 
llvm-svn: 7428
 2003-07-30 19:04:37 +00:00
Chris Lattner
6ad460b336 Simplify code by using ConstantInt::getRawValue instead of checking to see 
whether the constant is signed or unsigned, then casting

llvm-svn: 7252
 2003-07-23 15:22:26 +00:00
Chris Lattner
b40f50e3d1 Fix bug: InstCombine/2003-06-22-ConstantExprCrash.ll 
llvm-svn: 6857
 2003-06-22 20:48:30 +00:00
Chris Lattner
343c4d4987 Fix bug: Linker/2003-06-02-TypeResolveProblem2.ll 
llvm-svn: 6699
 2003-06-16 12:11:33 +00:00
Chris Lattner
37b01d74e4 * Make assertion message useful 
* Kill dead conditional

llvm-svn: 6544
 2003-06-02 17:42:47 +00:00
Chris Lattner
c17deffb2b Fix bug: Linker/2003-06-02-TypeResolveProblem.ll 
llvm-svn: 6542
 2003-06-02 17:25:46 +00:00
Chris Lattner
fbb45c1b92 Fix problem with last checkin. 
llvm-svn: 6328
 2003-05-25 16:15:32 +00:00
Chris Lattner
500984b918 Fix Bug: Linker/2003-04-26-NullPtrLinkProblem.ll 
This was a problem with constants having their types resolved to some new type,
but there was already a constant of the new type created.  Before, these types
were never merged together, now they are.

llvm-svn: 6314
 2003-05-23 20:03:32 +00:00
Chris Lattner
0462d7b16d Add support for shift constant expressions 
llvm-svn: 6260
 2003-05-21 17:49:25 +00:00
Chris Lattner
872fe63520 Fix bug: Assembler/2003-05-15-AssemblerProblem.llx 
llvm-svn: 6234
 2003-05-15 19:37:21 +00:00
Chris Lattner
e02634b9aa Remove unnecessary casts 
llvm-svn: 6201
 2003-05-14 17:51:05 +00:00
Chris Lattner
a33d9882ce Eliminate using declarations 
llvm-svn: 6179
 2003-05-13 21:37:02 +00:00
Chris Lattner
eacb88d2e9 Don't build constantexprs that could be folded 
llvm-svn: 5801
 2003-04-17 19:24:48 +00:00
Chris Lattner
bb00f755ed Change the interface to constant expressions to allow automatic folding 
llvm-svn: 5793
 2003-04-16 22:40:51 +00:00
Chris Lattner
5e5950b7e0 Fix ConstantUInt::isAllOnesValue 
llvm-svn: 5734
 2003-03-10 22:39:02 +00:00
Chris Lattner
90932ffc26 Remove #include 
Extend getNullValue to work with struct and array types

llvm-svn: 5718
 2003-03-06 21:02:18 +00:00
Chris Lattner
5b41b28fb6 - Dramatically simplify the Constant::mutateReferences implementation, 
allowing it to be called on all constant types (structures/arrays)

llvm-svn: 4160
 2002-10-14 03:30:23 +00:00
Chris Lattner
fdf2ca9468 - Rename Instruction::First*Op to *OpsBegin, and Num*Ops to *OpsEnd to 
reflect the fact that it's a range being defined.

llvm-svn: 4147
 2002-10-13 19:39:16 +00:00