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40 Commits

Author SHA1 Message Date
Chris Lattner
cbfd406541 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10807 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 21:13:12 +00:00
Chris Lattner
8b0f0cb908 Remove a whole bunch more ugliness. This is actually getting to the point of 
this whole refactoring: allow constant folding methods to return something
other than predefined classes, allow them to return generic Constant*'s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10806 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 21:02:29 +00:00
Chris Lattner
6b7b91ab03 Move ConstantHandling.h into lib/VMCore and out of include/llvm 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10805 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 20:48:11 +00:00
Chris Lattner
731ba7f032 Eliminate a lot of out-of-date comments, and all of the wierd overloaded 
operator constant folding stuff.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10803 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 20:43:44 +00:00
Chris Lattner
c4a1509829 Move prototype of llvm::ConstantFoldInstruction 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10786 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 18:25:44 +00:00
Chris Lattner
5d5a714b24 Implement == and != correctly. Before they would incorrectly return != 
for some constant exprs when they could really be the same value


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10058 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-17 20:19:35 +00:00
Chris Lattner
0dc396909e Constant folding shalt not be built on annotations 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10052 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-17 19:05:17 +00:00
Chris Lattner
8b70b78ba4 Fixes for PR114: Thanks to Reid Spencer! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10029 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-16 20:21:15 +00:00
Brian Gaeke
d0fde30ce8 Put all LLVM code into the llvm namespace, as per bug 109. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9903 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-11 22:41:34 +00:00
Chris Lattner
d5e4918fa7 Fix spello 
Add negate overload


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9709 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-04 23:37:40 +00:00
John Criswell
6fbcc26f14 Added LLVM copyright header (for lack of a better term). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9304 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-20 20:19:47 +00:00
Chris Lattner
48486893f4 Standardize header file comments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8782 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-30 18:37:50 +00:00
Chris Lattner
30780ccf15 Add support for ~ operator on constants 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7258 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-23 17:21:17 +00:00
Chris Lattner
3889a2cb05 Remove a ton of extraneous #includes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6842 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-22 03:08:05 +00:00
John Criswell
be583b914d Included assert.h so that the code compiles under newer versions of GCC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6682 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-11 14:01:36 +00:00
Chris Lattner
eca8e8f111 *** Huge: Make constantexprs be handled correctly, conservatively 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5923 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-25 02:51:46 +00:00
Chris Lattner
fd73cf895c Don't force a ConstantPointer to be returned 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5799 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-17 19:22:47 +00:00
Chris Lattner
ce8a14915d - Renamed Type::isIntegral() to Type::isInteger() 
- Added new method Type::isIntegral() that is the same as isInteger, but
    also accepts bool.
SCVS: ----------------------------------------------------------------------


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3572 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-09-03 01:05:48 +00:00
Chris Lattner
f4e3c006ac Remove constant propogation support for NOT instruction 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3321 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-14 18:17:07 +00:00
Chris Lattner
e56096aa41 Implement constant propogation of logical (and, or, xor) expressions. 
Fixes testcase: test/Regression/Transforms/ConstProp/logicaltest.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3153 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-07-30 16:24:25 +00:00
Chris Lattner
a803899af5 Move a bunch of code to a .cpp file, don't #include Instruction.h 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2499 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-06 17:54:50 +00:00
Chris Lattner
4c1061f58c Implement constant propogation of shift instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2471 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-06 03:01:37 +00:00
Chris Lattner
bdd15ad565 Implement remainder 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2463 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-03 21:40:37 +00:00
Chris Lattner
31bcdb822f Split ConstantVals.h into Constant.h and Constants.h 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2378 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-28 19:55:58 +00:00
Chris Lattner
66160427de Minor change to reflect that ConstantHandling is now part of VMCore 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2163 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-08 20:15:12 +00:00
Chris Lattner
05c05ea9ca Implement constant propogation of multiply and divide instructions!! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2134 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-07 08:10:14 +00:00
Chris Lattner
c4edcb3a17 Pull stuff out of opt namespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1511 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-01-21 21:44:38 +00:00
Chris Lattner
e9bb2df410 Rename ConstPoolVal -> Constant 
Rename ConstPool*   -> Constant*
Rename ConstPoolVals.h -> ConstantVals.h


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1407 91177308-0d34-0410-b5e6-96231b3b80d8
 2001-12-03 22:26:30 +00:00
Chris Lattner
8927973283 Be more const correct 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1332 91177308-0d34-0410-b5e6-96231b3b80d8
 2001-11-26 16:48:56 +00:00
Chris Lattner
76ac1a45b4 Implement constant propogation of null pointer values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1078 91177308-0d34-0410-b5e6-96231b3b80d8
 2001-11-01 05:55:13 +00:00
Chris Lattner
37aabf28b3 Implemented constant propogation of cast instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1064 91177308-0d34-0410-b5e6-96231b3b80d8
 2001-10-31 05:07:57 +00:00
Chris Lattner
0b693fb125 not is a keyword in Ansi C++. Avoid it 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@748 91177308-0d34-0410-b5e6-96231b3b80d8
 2001-10-13 06:30:39 +00:00
Chris Lattner
78914e772f Convert ConstRules to use annotations to clean it up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@514 91177308-0d34-0410-b5e6-96231b3b80d8
 2001-09-09 21:00:23 +00:00
Chris Lattner
539a4bf4b5 You no longer have to delete constants! They are located in a global 
constant pool instead of in local ones.

Change bool handling to prevent modification of bool values


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@436 91177308-0d34-0410-b5e6-96231b3b80d8
 2001-09-07 16:29:18 +00:00
Chris Lattner
7e314d2042 Add support for casting operators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243 91177308-0d34-0410-b5e6-96231b3b80d8
 2001-07-21 19:10:33 +00:00
Chris Lattner
a137f87051 Add multiply as a supported constant propogation operation 
Include the LevelChange.h header in AllOpts.h


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211 91177308-0d34-0410-b5e6-96231b3b80d8
 2001-07-20 19:14:41 +00:00
Chris Lattner
0908309e3c Neg instruction removed. Cast instruction implemented. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156 91177308-0d34-0410-b5e6-96231b3b80d8
 2001-07-08 04:57:15 +00:00
Chris Lattner
50d0b7ec3f Split AllOpts.h into lots of little .h files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108 91177308-0d34-0410-b5e6-96231b3b80d8
 2001-06-30 04:34:07 +00:00
Chris Lattner
6bb09d96a0 Add instructions to fold unary and binary instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87 91177308-0d34-0410-b5e6-96231b3b80d8
 2001-06-27 23:31:34 +00:00
Chris Lattner
009505452b Initial revision 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2 91177308-0d34-0410-b5e6-96231b3b80d8
 2001-06-06 20:29:01 +00:00