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Commit Graph

60 Commits

Author SHA1 Message Date
Reid Spencer
2580dd751f For PR950: Implement a stub for folding ICmp and FCmp instructions
llvm-svn: 32169
2006-12-04 05:19:34 +00:00
Reid Spencer
0668975146 Change inferred casts to explicit casts.
llvm-svn: 32165
2006-12-04 02:46:44 +00:00
Chris Lattner
64b24381a8 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.

llvm-svn: 32087
2006-12-01 19:50:54 +00:00
Chris Lattner
7e0d6868fd 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.

llvm-svn: 32081
2006-12-01 19:22:41 +00:00
Chris Lattner
c65612e859 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

llvm-svn: 32062
2006-12-01 05:55:25 +00:00
Reid Spencer
a1613b631b 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.

llvm-svn: 32060
2006-12-01 03:56:30 +00:00
Anton Korobeynikov
f627d28d9c Introducing external weak linkage. Darwin codegen should be added later.
llvm-svn: 32052
2006-12-01 00:25:12 +00:00
Reid Spencer
992d9788b3 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.

llvm-svn: 31931
2006-11-27 01:05:10 +00:00
Jim Laskey
28fec74f1b Remove redundant <cmath>.
llvm-svn: 31561
2006-11-08 19:16:44 +00:00
Reid Spencer
da1f5b882a 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.

llvm-svn: 31542
2006-11-08 06:47:33 +00:00
Reid Spencer
7af6c17de0 Remove unused variables.
llvm-svn: 31375
2006-11-02 08:18:15 +00:00
Reid Spencer
1abf69e923 For PR950:
Replace the REM instruction with UREM, SREM and FREM.

llvm-svn: 31369
2006-11-02 01:53:59 +00:00
Reid Spencer
6833ffe8b8 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.

llvm-svn: 31195
2006-10-26 06:15:43 +00:00
Reid Spencer
d414793dbc 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.

llvm-svn: 31063
2006-10-20 07:07:24 +00:00
Chris Lattner
5cd4ac0a79 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.

llvm-svn: 30931
2006-10-13 17:22:21 +00:00
Chris Lattner
c00ee152c9 Eliminate ConstantBool::True and ConstantBool::False. Instead, provideConstantBool::getTrue() and ConstantBool::getFalse().
llvm-svn: 30664
2006-09-28 23:34:49 +00:00
Chris Lattner
8aa718b0ed Add new SetCondInst::isRelational/isEquality methods. Rename
Instruction::isRelational to Instruction::isComparison.

llvm-svn: 30444
2006-09-17 19:14:47 +00:00
Chris Lattner
33bd5dcfb7 s|llvm/Support/Visibility.h|llvm/Support/Compiler.h|
llvm-svn: 29911
2006-08-27 12:54:02 +00:00
Chris Lattner
11f1b29308 Use hidden visibility to reduce the sizes of some .o files. This chops 60K off a release llvm-dis.
llvm-svn: 28969
2006-06-28 21:38:54 +00:00
Chris Lattner
66d23312b5 Add more anonymous namespaces to make it clear that these are private classes
llvm-svn: 28901
2006-06-21 18:13:36 +00:00
Chris Lattner
14b19acd56 Add shufflevector support, todo, implement better constant folding.
llvm-svn: 27510
2006-04-08 01:18:18 +00:00
Chris Lattner
8c5ac50fb4 Constant fold extractelement(zero, x) -> zero
llvm-svn: 27479
2006-04-07 04:44:06 +00:00
Chris Lattner
3aa0246b4a Constant fold casts from things like <4 x int> -> <4 x uint>, likewise int<->fp.
llvm-svn: 27336
2006-04-02 01:38:28 +00:00
Chris Lattner
8e584affdb constant fold extractelement with undef operands.
llvm-svn: 27301
2006-03-31 18:31:40 +00:00
Robert Bocchino
4e3d87a0dc VMCore support for the insertelement operation.
llvm-svn: 25408
2006-01-17 20:07:22 +00:00
Robert Bocchino
472e42d3cc Added constant folding support for the extractelement operation.
llvm-svn: 25187
2006-01-10 20:03:46 +00:00
Chris Lattner
ee327e57d2 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

llvm-svn: 25112
2006-01-05 07:49:30 +00:00
Chris Lattner
253796d43f fix some formatting problems
llvm-svn: 25110
2006-01-05 07:19:51 +00:00
Chris Lattner
cbb7c27b51 implement constant folding of ==/!= on constant packed, simplify some code.
llvm-svn: 25074
2006-01-04 02:20:54 +00:00
Chris Lattner
00a5bdbb95 implement constant folding for the element-wise binary operations
llvm-svn: 25073
2006-01-04 02:15:02 +00:00
Chris Lattner
fffcbfffa6 don't crash when trying to constant fold packed expressions.
llvm-svn: 25072
2006-01-04 02:03:29 +00:00
Jeff Cohen
d33e8df701 Use ANSI-approved way of getting the value infinity (otherwise VC++ won't compile it)
llvm-svn: 21662
2005-05-03 03:13:01 +00:00
Andrew Lenharth
d46211fc03 fold fp div by 0 to inf, the way gcc does. This is legal according to the FP spec
llvm-svn: 21655
2005-05-02 21:25:47 +00:00
Reid Spencer
c206223e65 Shut GCC 4.0 up about classes with virtual functions but no virtual
destructor.

llvm-svn: 21510
2005-04-24 22:27:20 +00:00
Misha Brukman
53e199440e Remove trailing whitespace
llvm-svn: 21427
2005-04-21 23:48:37 +00:00
Chris Lattner
f893f17907 Fix a nasty thinko in my previous commit.
llvm-svn: 19881
2005-01-28 23:17:27 +00:00
Chris Lattner
f24ea9cf5e Fix ConstProp/2005-01-28-SetCCGEP.ll: indexing over zero sized elements does
not change the address.

llvm-svn: 19874
2005-01-28 19:09:51 +00:00
Chris Lattner
97d3bf5049 No need to pessimize current code for future possibilities.
llvm-svn: 19311
2005-01-06 16:26:38 +00:00
Chris Lattner
7647235f0f Fix test/Regression/CFrontend/2003-11-01-EmptyStructCrash.c
llvm-svn: 18115
2004-11-22 19:15:27 +00:00
Chris Lattner
5a2ce1faab Generalize this code to turn any cast-to-first-element-of into a gep constexpr
llvm-svn: 17914
2004-11-17 17:59:35 +00:00
Chris Lattner
c088680a5f fold gep undef, ... -> undef
This comes up many times in perlbmk and probably others.

llvm-svn: 17100
2004-10-17 21:54:55 +00:00
Chris Lattner
e5aa085c1d Fix constant folding relational operators with undef operands.
llvm-svn: 17077
2004-10-17 04:01:51 +00:00
Chris Lattner
8c86882a99 Implement constant folding of undef values.
llvm-svn: 17070
2004-10-16 23:31:32 +00:00
Chris Lattner
63ba63bb56 Allow creation of GEP constantexprs with a vector of value* operands as
well as a vector of constant*'s.  It turns out that this is more efficient
and all of the clients want to do that, so we should cater to them.

llvm-svn: 16923
2004-10-11 22:52:25 +00:00
Chris Lattner
f8380b953a If we are trying to create a ConstantExpr cast that is really a GEP to the
first element of an array, return a GEP instead of a cast.  This allows us
to transparently fold this:

int* getelementptr (int* cast ([100 x int]* %Gbody to int*), int 40)

into this:

int* getelementptr ([100 x int]* %Gbody, int 0, int 40)

llvm-svn: 16911
2004-10-11 03:57:30 +00:00
Reid Spencer
bc38cd572f bug 122:
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14927
2004-07-17 23:47:01 +00:00
Chris Lattner
d1b726d18f Implement folding of expressions like 'uint cast (int* getelementptr (int*
null, uint 1) to uint)' to a constant integer.  We can only do this with
primitive LLVM types, because other types have target-specific sizes.

llvm-svn: 14837
2004-07-15 01:16:59 +00:00
Chris Lattner
006aea24ff When folding constant expr gep's, don't force the use of long indices.
llvm-svn: 14658
2004-07-07 04:45:13 +00:00
Chris Lattner
0cd29ae2cd Rename Type::PrimitiveID to TypeId and ::getPrimitiveID() to ::getTypeID()
llvm-svn: 14201
2004-06-17 18:19:28 +00:00
Reid Spencer
d98738fe4d Fix a bug that Chris asserts emphatically is a bug. The changed clause
would always return false because the Type of a type value is always
Type::TypeTY and can never be a floating point type.

llvm-svn: 13902
2004-05-30 01:19:48 +00:00