Chris Lattner
cbfd406541
Rename ConstantHandling.* -> ConstantFolding.*
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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
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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
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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
4a0ecc8c0c
Eliminate usage of the wierd overloaded operator constant folders
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10802 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 20:41:05 +00:00
Chris Lattner
28aabc34f7
Move llvm::ConstantFoldInstruction from here to Transforms/Utils
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10784 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 18:25:03 +00:00
Chris Lattner
952454dbff
Implement: Assembler/2004-01-11-getelementptrfolding.llx
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10759 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-11 23:56:33 +00:00
Chris Lattner
b9da9c137d
Relax constrains on GEP type indexes
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10228 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-25 21:21:46 +00:00
Chris Lattner
5d5a714b24
Implement == and != correctly. Before they would incorrectly return !=
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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
a83a6e4276
No REALLY, get rid of ConstantPointer references
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10054 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-17 19:21:04 +00:00
Chris Lattner
cf09f51bb9
Eliminate use of the ConstantPointer class
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10053 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-17 19:19:32 +00:00
Chris Lattner
0dc396909e
Constant folding shalt not be built on annotations
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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
Brian Gaeke
d0fde30ce8
Put all LLVM code into the llvm namespace, as per bug 109.
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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
John Criswell
b576c94c15
Added LLVM project notice to the top of every C++ source file.
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Header files will be on the way.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9298 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-20 19:43:21 +00:00
Chris Lattner
0425a87a62
Implement Assembler/2003-08-21-ConstantExprCast-Fold.llx
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8015 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-21 19:45:55 +00:00
Chris Lattner
4b517a4654
Implement testcase: Assembler/2003-08-20-ConstantExprGEP-Fold.llx
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7983 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-20 16:11:27 +00:00
Chris Lattner
3ccd0fd756
Implement constant folding of casts from boolean constants to other values
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7812 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-13 15:52:25 +00:00
Chris Lattner
6a2a60aaf3
Implement more aggressive folding of constant GEP instructions
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6913 91177308-0d34-0410-b5e6-96231b3b80d8
2003-06-26 05:22:45 +00:00
Chris Lattner
5c38e99c59
Fix constant folding to ALWAYS work.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6355 91177308-0d34-0410-b5e6-96231b3b80d8
2003-05-27 19:16:07 +00:00
Chris Lattner
3b9922f99c
Remove unnecessary casts
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6201 91177308-0d34-0410-b5e6-96231b3b80d8
2003-05-14 17:51:05 +00:00
Chris Lattner
e0c60038eb
Fix bug
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6184 91177308-0d34-0410-b5e6-96231b3b80d8
2003-05-14 02:47:13 +00:00
Chris Lattner
0ec3590664
Implement another getelementptr folding opportunity that arises when
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linking stuff with appending linkage
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6180 91177308-0d34-0410-b5e6-96231b3b80d8
2003-05-13 21:50:52 +00:00
Chris Lattner
893af8c058
Fix Bug: ConstProp/2003-05-12-DivideError.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6125 91177308-0d34-0410-b5e6-96231b3b80d8
2003-05-12 15:26:25 +00:00
Chris Lattner
6cf4cb90a0
** CORRECTLY, conservatively handle constant expressions
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5924 91177308-0d34-0410-b5e6-96231b3b80d8
2003-04-25 02:52:06 +00:00
Chris Lattner
27287de06b
Allow constant folding of GEP instructions, even if we don't do a whole lot yet.
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Fold ConstExpr casts better
castToPointer shouldn't be forced to return a constantpointer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5800 91177308-0d34-0410-b5e6-96231b3b80d8
2003-04-17 19:24:18 +00:00
Chris Lattner
252030e86b
Implement setcc for booleans. Fixes bug:
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test/Regression/Transforms/ConstProp/2002-09-03-SetCC-Bools.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3576 91177308-0d34-0410-b5e6-96231b3b80d8
2002-09-03 20:09:49 +00:00
Chris Lattner
589fda514c
Remove support forNOT instruction
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3316 91177308-0d34-0410-b5e6-96231b3b80d8
2002-08-14 17:52:06 +00:00
Chris Lattner
5fa829c54a
Implement constant propogation of logical (and, or, xor) expressions.
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Fixes testcase: test/Regression/Transforms/ConstProp/logicaltest.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3154 91177308-0d34-0410-b5e6-96231b3b80d8
2002-07-30 16:24:28 +00:00
Chris Lattner
54753e2790
Implement constant propogation of PHI instructions like this:
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X = phi(0, 0, 0)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2543 91177308-0d34-0410-b5e6-96231b3b80d8
2002-05-07 20:44:59 +00:00
Chris Lattner
178414c3cf
Move code out of header file
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2498 91177308-0d34-0410-b5e6-96231b3b80d8
2002-05-06 17:54:27 +00:00
Chris Lattner
cf4929fa27
Implement constant propogation of shifts
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2470 91177308-0d34-0410-b5e6-96231b3b80d8
2002-05-06 03:00:54 +00:00
Chris Lattner
44540ddaa0
Implement remainder
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Fix implementation of Not
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2464 91177308-0d34-0410-b5e6-96231b3b80d8
2002-05-03 21:41:07 +00:00
Chris Lattner
905f311d05
Fix bug: test/Regression/Transforms/SCCP/2002-05-03-NotOperator.ll
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by using the ~ operator instead of !
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2458 91177308-0d34-0410-b5e6-96231b3b80d8
2002-05-03 20:09:52 +00:00
Chris Lattner
968ddc921e
ConstantHandling moved into VMCore library
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2165 91177308-0d34-0410-b5e6-96231b3b80d8
2002-04-08 20:18:09 +00:00
Chris Lattner
05c05ea9ca
Implement constant propogation of multiply and divide instructions!!
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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
59b6b8e0b3
Move stuff out of the Optimizations directories into the appropriate Transforms
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directories. Eliminate the opt namespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1520 91177308-0d34-0410-b5e6-96231b3b80d8
2002-01-21 23:17:48 +00:00
Chris Lattner
c4edcb3a17
Pull stuff out of opt namespace
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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
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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
76ac1a45b4
Implement constant propogation of null pointer values.
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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
01bad7fbda
not is a keyword in ansi C++, avoid it
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@763 91177308-0d34-0410-b5e6-96231b3b80d8
2001-10-13 06:51:26 +00:00
Chris Lattner
cfe26c930a
Add more support for new style casts
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Convert more code to use them
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@695 91177308-0d34-0410-b5e6-96231b3b80d8
2001-10-01 18:26:53 +00:00
Chris Lattner
243f1f7315
Use correct style casts
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Types are not all constant now
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@544 91177308-0d34-0410-b5e6-96231b3b80d8
2001-09-10 20:11:28 +00:00
Chris Lattner
14712a6abf
Clean up ConstRules stuff to use annotations instead of a mutable member in Type
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@515 91177308-0d34-0410-b5e6-96231b3b80d8
2001-09-09 21:01:20 +00:00
Chris Lattner
311611079b
* Support global constants
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* Eliminate need for constant pool
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@451 91177308-0d34-0410-b5e6-96231b3b80d8
2001-09-07 16:40:34 +00:00
Chris Lattner
f59bd5331e
Add support for casts
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244 91177308-0d34-0410-b5e6-96231b3b80d8
2001-07-21 19:10:49 +00:00
Chris Lattner
b5bcbc3bef
Add support for constant propogation of multiplies
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214 91177308-0d34-0410-b5e6-96231b3b80d8
2001-07-20 19:15:36 +00:00
Chris Lattner
0908309e3c
Neg instruction removed. Cast instruction implemented.
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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
7e02b7e600
Optimizations got their own header files
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Optimizations now live in the 'opt' namespace
include/llvm/Opt was renamed include/llvm/Optimizations
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113 91177308-0d34-0410-b5e6-96231b3b80d8
2001-06-30 04:36:40 +00:00
Chris Lattner
009505452b
Initial revision
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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