Chris Lattner
a309338bd4
Implement InstCombine/xor.ll:test(15|16)
...
llvm-svn: 9708
2003-11-04 23:37:10 +00:00
Chris Lattner
19a418db92
Implement InstCombine/cast-set.ll:test6[a]. This improves code generated for
...
a hot function in em3d
llvm-svn: 9673
2003-11-03 05:17:03 +00:00
Chris Lattner
d8c97ff65d
Implement InstCombine/cast-set.ll: test1, test2, test7
...
llvm-svn: 9670
2003-11-03 04:25:02 +00:00
Chris Lattner
01dd059e75
Fix bug with zero sized casts
...
llvm-svn: 9667
2003-11-03 01:29:41 +00:00
Chris Lattner
e005f61e9e
Fix bug in previous checkin
...
llvm-svn: 9656
2003-11-02 06:54:48 +00:00
Chris Lattner
a06aa3d2f2
Implement transmogriphication of allocation instructions
...
llvm-svn: 9654
2003-11-02 05:57:39 +00:00
Chris Lattner
c8ea13f032
Fix bug: 2003-10-29-CallSiteResolve.ll & PR70
...
llvm-svn: 9600
2003-10-30 00:46:41 +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
f2ed60c0b7
Decrease usage of use_size()
...
llvm-svn: 9135
2003-10-15 16:48:29 +00:00
Chris Lattner
16b7ed1eaa
whoops, don't accidentally lose variable names
...
llvm-svn: 8955
2003-10-07 22:58:41 +00:00
Chris Lattner
f507e6e58e
Fix bug: InstCombine/cast.ll:test11 / PR#7
...
llvm-svn: 8954
2003-10-07 22:54:13 +00:00
Chris Lattner
e8b656a62f
Refactor code a bit
...
llvm-svn: 8952
2003-10-07 22:32:43 +00:00
Chris Lattner
edb06ce061
Fix bug in previous checkin
...
llvm-svn: 8922
2003-10-07 15:17:02 +00:00
Chris Lattner
e6955c77e0
Minor speedups for the instcombine pass
...
llvm-svn: 8894
2003-10-06 17:11:01 +00:00
Chris Lattner
059033218b
Implement InstCombine/add.ll:test17 & 18
...
llvm-svn: 8817
2003-10-02 15:11:26 +00:00
Chris Lattner
68f6d33416
Squelch warning
...
llvm-svn: 8659
2003-09-22 20:33:34 +00:00
Chris Lattner
ef92d8eebb
Implement InstCombine/and.ll:test(15|16)
...
llvm-svn: 8607
2003-09-19 19:05:02 +00:00
Chris Lattner
b8d0545d27
pull a large nested conditional out into its own function
...
llvm-svn: 8605
2003-09-19 17:17:26 +00:00
Chris Lattner
219dd8b23d
Implement InstCombine/add.ll:test(15|16)
...
llvm-svn: 8604
2003-09-19 15:35:42 +00:00
Chris Lattner
9036a399f1
Simplify code
...
Implement InstCombine/mul.ll:test9
llvm-svn: 8488
2003-09-11 22:24:54 +00:00
Chris Lattner
58d4183a25
Fix spell-o's
...
llvm-svn: 8431
2003-09-10 05:29:43 +00:00
Chris Lattner
2b7babcc41
Implement instcombine optimizations:
...
(A <setcc1> B) logicalop (A <setcc2> B) -> (A <setcc3> B) or true or false
Where setcc[123] is one of the 6 setcc instructions, and logicalop is one of: And, Or, Xor
llvm-svn: 7828
2003-08-13 20:16:26 +00:00
Chris Lattner
7ba3220999
Generalize some of the add tests to allow for reassociation to take place
...
llvm-svn: 7825
2003-08-13 19:01:45 +00:00
Chris Lattner
374473c778
Implement InstCombine/2003-08-12-AllocaNonNull.ll
...
llvm-svn: 7807
2003-08-13 05:38:46 +00:00
Chris Lattner
f8fbdb5ded
Do not cannonicalize (X != 0) into (cast X to bool)
...
llvm-svn: 7806
2003-08-13 05:33:12 +00:00
Chris Lattner
5c9ccccd96
Change cannonicalization rules: add X,X is represented as multiplies, multiplies
...
of a power of two are represented as a shift.
llvm-svn: 7803
2003-08-13 04:18:28 +00:00
Chris Lattner
3e52e8ce5a
Allow pulling logical operations through shifts.
...
This implements InstCombine/shift.ll:test14*
llvm-svn: 7793
2003-08-12 21:53:41 +00:00
Chris Lattner
2e2432d69e
Simplify code
...
llvm-svn: 7783
2003-08-12 19:17:27 +00:00
Chris Lattner
c9c1d9f778
Implement testcases InstCombine/or.ll:test16/test17
...
llvm-svn: 7782
2003-08-12 19:11:07 +00:00
Chris Lattner
c5b0f39c96
Instcombine: (A >> c1) << c2 for signed integers
...
llvm-svn: 7295
2003-07-24 18:38:56 +00:00
Chris Lattner
bf9589bf1f
Reorganization of code, no functional changes.
...
Now it shoudl be a bit more efficient
llvm-svn: 7292
2003-07-24 17:52:58 +00:00
Chris Lattner
785e8453f0
Allow folding several instructions into casts, which can simplify a lot
...
of codes. For example,
short kernel (short t1) {
t1 >>= 8; t1 <<= 8;
return t1;
}
became:
short %kernel(short %t1.1) {
%tmp.3 = shr short %t1.1, ubyte 8 ; <short> [#uses=1]
%tmp.5 = cast short %tmp.3 to int ; <int> [#uses=1]
%tmp.7 = shl int %tmp.5, ubyte 8 ; <int> [#uses=1]
%tmp.8 = cast int %tmp.7 to short ; <short> [#uses=1]
ret short %tmp.8
}
before, now it becomes:
short %kernel(short %t1.1) {
%tmp.3 = shr short %t1.1, ubyte 8 ; <short> [#uses=1]
%tmp.8 = shl short %tmp.3, ubyte 8 ; <short> [#uses=1]
ret short %tmp.8
}
which will become:
short %kernel(short %t1.1) {
%tmp.3 = and short %t1.1, 0xFF00
ret short %tmp.3
}
This implements cast-set.ll:test4 and test5
llvm-svn: 7290
2003-07-24 17:35:25 +00:00
Chris Lattner
6d10220481
Add comments
...
llvm-svn: 7283
2003-07-23 21:41:57 +00:00
Chris Lattner
ac8a2be5e4
Remove explicit check for: not (not X) = X, it is already handled because xor is commutative
...
- InstCombine: (X & C1) ^ C2 --> (X & C1) | C2 iff (C1&C2) == 0
- InstCombine: (X | C1) ^ C2 --> (X | C1) & ~C2 iff (C1&C2) == C2
llvm-svn: 7282
2003-07-23 21:37:07 +00:00
Chris Lattner
f453a39185
InstCombine: (X ^ C1) & C2 --> (X & C2) iff (C1&C2) == 0
...
llvm-svn: 7272
2003-07-23 19:36:21 +00:00
Chris Lattner
80d9c3a900
- InstCombine: (X | C1) & C2 --> X & C2 iff C1 & C1 == 0
...
- InstCombine: (X | C) & C --> C
- InstCombine: (X | C1) & C2 --> (X | (C1&C2)) & C2
llvm-svn: 7269
2003-07-23 19:25:52 +00:00
Chris Lattner
76c1da471c
IC: (X & C1) | C2 --> (X | C2) & (C1|C2)
...
IC: (X ^ C1) | C2 --> (X | C2) ^ (C1&~C2)
We are now guaranteed that all 'or's will be inside of 'and's, and all 'and's
will be inside of 'xor's, if the second operands are constants.
llvm-svn: 7264
2003-07-23 18:29:44 +00:00
Chris Lattner
4b43cd9700
IC: (X ^ C1) & C2 --> (X & C2) ^ (C1&C2)
...
Minor code cleanup
llvm-svn: 7262
2003-07-23 17:57:01 +00:00
Chris Lattner
ae691a3068
InstCombine: (X ^ 4) == 8 --> X == 12
...
llvm-svn: 7260
2003-07-23 17:26:36 +00:00
Chris Lattner
b07de65646
IC: (X & 5) == 13 --> false
...
IC: (X | 8) == 4 --> false
llvm-svn: 7257
2003-07-23 17:02:11 +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
7594fa7280
- InstCombine (cast (xor A, B) to bool) ==> (setne A, B)
...
- InstCombine (cast (and X, (1 << size(X)-1)) to bool) ==> x < 0
llvm-svn: 7241
2003-07-22 21:46:59 +00:00
John Criswell
98946bac5b
Added code that checks to see if a global variable is external before replacing
...
a load of the global variable with the variable's constant value.
llvm-svn: 7216
2003-07-21 19:42:57 +00:00
John Criswell
dbaf5f719c
Dinakar and I fixed a bug where we were trying to get the initializer of
...
an external constant. Since external constants don't have initializers, we
were failing on an assert() call in llvm/GlobalVariable.h.
llvm-svn: 7193
2003-07-17 19:06:55 +00:00
Chris Lattner
0cc143577c
Add support for elimination of load instruction from global constants
...
llvm-svn: 6912
2003-06-26 05:06:25 +00:00
Chris Lattner
ebbc28f553
Instcombine: X * -1 -> -X
...
llvm-svn: 6904
2003-06-25 17:09:20 +00:00
Chris Lattner
e1f9e715c6
Implement new transforms:
...
Replace (cast (sub A, B) to bool) -> (setne A, B)
Replace (cast (add A, B) to bool) -> (setne A, -B)
llvm-svn: 6873
2003-06-23 21:59:52 +00:00
Chris Lattner
9a0da3e531
Instcombine cast (getelementptr Ptr, 0, 0, 0) to ... into: cast Ptr to ...
...
This fixes type safety problems in a variety of benchmarks that were confusing
DSA.
llvm-svn: 6837
2003-06-21 23:12:02 +00:00
Chris Lattner
29e8adc038
Implement the functionality of InstCombine/call.ll
...
llvm-svn: 6783
2003-06-19 17:00:31 +00:00
Chris Lattner
1bbfcd901c
Fix bug: InstCombine/2003-06-05-BranchInvertInfLoop.ll
...
llvm-svn: 6630
2003-06-05 20:12:51 +00:00
Chris Lattner
95d21756aa
Clean up previous code.
...
Add new combination to turn seteq X, 0 -> not(cast X to bool)
llvm-svn: 6604
2003-06-04 05:10:11 +00:00
Chris Lattner
b2ea03d03a
Implement combination of boolean not with branch
...
llvm-svn: 6599
2003-06-04 04:46:00 +00:00
Chris Lattner
eaafbfd2df
Implement xform: (X != 0) -> (bool)X
...
llvm-svn: 6506
2003-06-01 03:35:25 +00:00
Chris Lattner
416e30b07b
Fix bug: Instcombine/2003-05-27-ConstExprCrash.ll
...
llvm-svn: 6352
2003-05-27 16:40:51 +00:00
Chris Lattner
1fde83c9b5
Fix bug: InstCombine/2003-05-26-CastMiscompile.ll
...
llvm-svn: 6338
2003-05-26 23:41:32 +00:00
Chris Lattner
91c5d68261
Minor cleanups.
...
This hunk:
- } else if (Src->getNumOperands() == 2 && Src->use_size() == 1) {
+ } else if (Src->getNumOperands() == 2) {
Allows GEP folding to be more aggressive, which reduces the number of instructions
and can dramatically speed up BasicAA in some cases.
llvm-svn: 6286
2003-05-22 19:07:21 +00:00
Misha Brukman
74cf3f5246
s/convertable/convertible/g
...
llvm-svn: 6248
2003-05-20 18:45:36 +00:00
Chris Lattner
5045ab0fac
Fix another case where constexprs could cause a crash
...
llvm-svn: 5972
2003-04-30 22:34:06 +00:00
Chris Lattner
caa766b40f
Fix constant folding of constexprs
...
llvm-svn: 5971
2003-04-30 22:19:10 +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
c51d7871ee
Add the following instcombine xforms:
...
- Implement simple reassociation: (A|c1)|(B|c2) == (A|B)|(c1|c2)
- (A & C1)+(B & C2) -> (A & C1)|(B & C2) iff C1&C2 == 0
- (A & C1)^(B & C2) -> (A & C1)|(B & C2) iff C1&C2 == 0
llvm-svn: 5743
2003-03-11 00:12:48 +00:00
Chris Lattner
6eededc41f
Implement: -A*-B == A*B
...
llvm-svn: 5740
2003-03-10 23:23:04 +00:00
Chris Lattner
715b592fc4
Add new transformation: // (~A | ~B) == (~(A & B))
...
llvm-svn: 5738
2003-03-10 23:13:59 +00:00
Chris Lattner
0f5ab645eb
Generalize not and neg comparison testers to allow constant to be considered not'able and neg'able. This
...
allows optimization of this:
int %test4(int %A, int %B) {
%a = xor int %A, -1
%c = and int %a, 5 ; 5 = ~c2
%d = xor int %c, -1
ret int %d
}
into this:
int %test4(int %A, int %B) { ; No predecessors!
%c.demorgan = or int %A, -6 ; <int> [#uses=1]
ret int %c.demorgan
}
llvm-svn: 5736
2003-03-10 23:06:50 +00:00
Chris Lattner
3eca9aaa0a
Generalize (A+c1)+c2 optimization to work with all associative operators
...
llvm-svn: 5733
2003-03-10 21:43:22 +00:00
Chris Lattner
9dec4368c0
Minor change, no functionality diff
...
llvm-svn: 5731
2003-03-10 19:20:30 +00:00
Chris Lattner
5fbfe9b9a8
Fix bug: (x << 100) wasn't folded to 0, but (x >> 100) was (when x is unsigned)
...
Implement new shift optimizations for shifting the result of a shift.
llvm-svn: 5729
2003-03-10 19:16:08 +00:00
Chris Lattner
5e6fb8b8d5
Implement: (A|B)^B == A & (~B)
...
llvm-svn: 5728
2003-03-10 18:24:17 +00:00
Chris Lattner
bd009a8938
Implement %test7 in InstCombine/getelementptr.ll
...
llvm-svn: 5704
2003-03-05 22:33:14 +00:00
Chris Lattner
c24ffa9297
4 new transformations:
...
* X*C + X --> X * (C+1)
* X + X*C --> X * (C+1)
* X - X*C --> X * (1-C)
* X*C - X --> X * (C-1)
llvm-svn: 5592
2003-02-18 19:57:07 +00:00
Chris Lattner
8306cc5c5c
Add a variety of new transformations:
...
* A & ~A == 0
* A / (2^c) == A >> c if unsigned
* 0 / A == 0
* 1.0 * A == A
* A * (2^c) == A << c
* A ^ ~A == -1
* A | ~A == -1
* 0 % X = 0
* A % (2^c) == A & (c-1) if unsigned
* A - (A & B) == A & ~B
* -1 - A == ~A
llvm-svn: 5587
2003-02-18 19:28:33 +00:00
Chris Lattner
6c9d57c590
Fix bug: 2002-12-05-MissedConstProp.ll pointed out by Casey Carter
...
llvm-svn: 4935
2002-12-05 22:41:53 +00:00
Chris Lattner
0141841bc4
Fix warning
...
llvm-svn: 4649
2002-11-09 00:49:43 +00:00
Chris Lattner
aaf2fa34a5
Instcombine this away:
...
%A = getelementptr [4 x int]* %M, long 0, long 0
%B = getelementptr int* %A, long 2
llvm-svn: 4536
2002-11-04 16:43:32 +00:00
Chris Lattner
ecddf3396f
Add a transformation to turn:
...
malloc Ty, C
int
malloc [C x Ty], 1
llvm-svn: 4534
2002-11-04 16:18:53 +00:00
Misha Brukman
c9c721edf0
Fix spelling of `propagate'.
...
llvm-svn: 4423
2002-10-29 23:06:16 +00:00
Chris Lattner
b565d3ac5b
- Rename AnalysisUsage::preservesAll to getPreservesAll & preservesCFG to
...
setPreservesCFG to be less confusing.
llvm-svn: 4255
2002-10-21 20:00:28 +00:00
Chris Lattner
b32252aa71
It is illegal for PHI nodes to have zero values, delete the code to handle them
...
llvm-svn: 4071
2002-10-08 17:07:39 +00:00
Chris Lattner
55c7ae3cdc
Fold ashr -1, X into -1
...
llvm-svn: 4070
2002-10-08 16:16:40 +00:00
Chris Lattner
7cf9f6f4b1
Updates to work with recent Statistic's changes:
...
* Renamed StatisticReporter.h/cpp to Statistic.h/cpp
* Broke constructor to take two const char * arguments instead of one, so
that indendation can be taken care of automatically.
* Sort the list by pass name when printing
* Make sure to print all statistics as a group, instead of randomly when
the statistics dtors are called.
* Updated ProgrammersManual with new semantics.
llvm-svn: 4002
2002-10-01 22:38:41 +00:00
Chris Lattner
b6c408778a
Optimize away cases like:
...
%cast109 = cast uint %cast212 to short ; <short> [#uses=1]
%cast214 = cast short %cast109 to uint ; <uint> [#uses=1]
%cast215 = cast uint %cast214 to short ; <short> [#uses=1]
llvm-svn: 3897
2002-09-23 23:39:43 +00:00
Chris Lattner
5ccb21f41d
Fix bug: test/Regression/Transforms/InstCombine/2002-09-17-GetElementPtrCrash.ll
...
Thanks to Casey for finding it!
llvm-svn: 3783
2002-09-17 21:05:42 +00:00
Chris Lattner
fb017cb38c
- Change getelementptr instruction to use long indexes instead of uint
...
indexes for sequential types.
llvm-svn: 3682
2002-09-11 01:21:33 +00:00
Chris Lattner
5143d4a3b3
Add cannonicalization of shl X, 1 -> add X, X
...
llvm-svn: 3671
2002-09-10 23:04:09 +00:00
Chris Lattner
4f5abce7f6
Hack unneccesary now that shifts of pointers are no longer legal!
...
llvm-svn: 3640
2002-09-10 03:50:54 +00:00
Chris Lattner
c1de581f8e
Fix Bug: test/Regression/Transforms/InstCombine/2002-09-08-PointerShiftBug.ll
...
llvm-svn: 3626
2002-09-08 21:39:07 +00:00
Chris Lattner
3ce5b343c5
- Renamed Type::isIntegral() to Type::isInteger()
...
- Added new method Type::isIntegral() that is the same as isInteger, but
also accepts bool.
llvm-svn: 3574
2002-09-03 01:08:28 +00:00
Chris Lattner
cd49f0ec5d
Add constant prop & DIE to InstCombine, so it cleans up after itself
...
llvm-svn: 3568
2002-09-02 04:59:56 +00:00
Chris Lattner
66b1127636
- instcombine demorgan's law: and (not A), (not B) == not (or A, B)
...
llvm-svn: 3495
2002-08-23 18:32:43 +00:00
Chris Lattner
18826b07fe
Instcombine PHI's of the form %PN = phi PN, X into X and
...
%PN = phi PN, PN, PN into 0 (because the phi must not be reachable)
llvm-svn: 3470
2002-08-22 20:22:01 +00:00
Chris Lattner
ad92b604b5
- instcombine (~(a < b)) into (a >= b)
...
llvm-svn: 3406
2002-08-20 18:24:26 +00:00
Chris Lattner
22116975ce
- implemented instcombine of phi (X, X, X) -> X
...
llvm-svn: 3397
2002-08-20 15:35:35 +00:00
Chris Lattner
04d2780d12
Promote getelementptr instructions to constexprs if we can.
...
llvm-svn: 3368
2002-08-17 22:21:59 +00:00
Chris Lattner
caaca8d4c9
Handle more cases of cast-of-cast in more general forms.
...
llvm-svn: 3347
2002-08-15 16:15:25 +00:00
Chris Lattner
83f92a7237
Implement capability to fold this:
...
uint %test4(int %A, int %B) {
%COND = setlt int %A, %B ; <bool> [#uses=1]
%result = cast bool %COND to uint ; <uint> [#uses=1]
ret uint %result
}
into a single cast instruction.
llvm-svn: 3339
2002-08-14 23:21:10 +00:00
Chris Lattner
890adeb7a2
- Fix InstCombine pass to not generate or process NOT instructions
...
- Fixed testcases to not use them either.
llvm-svn: 3315
2002-08-14 17:51:49 +00:00
Chris Lattner
b6a04772b5
- Rename ConstantGenericIntegral -> ConstantIntegral
...
llvm-svn: 3300
2002-08-13 17:50:24 +00:00
Chris Lattner
a6ba1b74ac
* Factor a bunch of code by using ReplaceInstUsesWith
...
* Move isMaxValue, isMinValue, isAllOnesValue to Constants.h
llvm-svn: 3290
2002-08-12 21:17:25 +00:00
Chris Lattner
0a51808266
New functionality for instcombine:
...
* New ReplaceInstUsesWith function to factor out tons of common code
This needs to be used more in the future still, but it's a good start
* New InsertNewInstBefore to allow multi-instruction replacements
* Change getMaxValue functions to isAllOnesValue function, which doesn't
have to CREATE/lookup a new constant. Also the name is accurate
* Add new isMaxValue, isMinValue, isMaxValueMinusOne, isMinValuePlusOne
functions: This should be moved to Constant* classes eventually
* Implement xor X, ALLONES -> not X
* Fold ALL setcc's of booleans away
* Handle various SetCC's for integers against values at the end of their
ranges, possibly off by one. This implements the setcc-strength-reduce.ll
testcase.
llvm-svn: 3286
2002-08-09 23:47:40 +00:00
Chris Lattner
c840f0ec2a
Fix bug: test/Regression/Transforms/InstCombine/2002-08-02-CastTest.ll
...
Implement feature: Cast's can now be converted to bitwise AND expressions.
llvm-svn: 3225
2002-08-02 20:00:25 +00:00
Chris Lattner
5d9be21256
* Cleanups of instcombine
...
- Reenable gep (gep x) -> x
- Make instcombine do dead instruction elimination where it's really
easy. Now visitors don't have to ensure they aren't not processing
dead instructions.
llvm-svn: 3222
2002-08-02 19:29:35 +00:00
Chris Lattner
7a9eb848cd
* Add support for different "PassType's"
...
* Add new RegisterOpt/RegisterAnalysis templates for registering passes that
are to show up in opt or analyze
* Register Analyses now
* Change optimizations to use RegisterOpt instead of RegisterPass
* Add support for different "PassType's"
* Add new RegisterOpt/RegisterAnalysis templates for registering passes that
are to show up in opt or analyze
* Register Analyses now
* Change optimizations to use RegisterOpt instead of RegisterPass
* Remove getPassName implementations from various subclasses
llvm-svn: 3113
2002-07-26 21:12:46 +00:00
Chris Lattner
c482880f9e
*** empty log message ***
...
llvm-svn: 3016
2002-07-23 18:06:35 +00:00
Chris Lattner
83577a047e
Disable folding g-e-p instructions into loads and stores.
...
llvm-svn: 2870
2002-07-10 22:37:17 +00:00
Chris Lattner
dfd421a7df
MEGAPATCH checkin.
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For details, See: docs/2002-06-25-MegaPatchInfo.txt
llvm-svn: 2779
2002-06-25 16:13:24 +00:00
Chris Lattner
9dde5c9df7
Fold add X, 0 for floating point types as well
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llvm-svn: 2734
2002-05-23 17:11:38 +00:00
Chris Lattner
8106c7a841
Fix bug: test/Regression/Transforms/InstCombine/2002-05-14-SubFailure.ll
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llvm-svn: 2627
2002-05-14 16:44:07 +00:00
Chris Lattner
0ee0c26f4e
Fix bug: test/Regression/Transforms/InstCombine/2002-05-14-TouchDeletedInst.ll
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"This testcase caused instcombine to fail because it got the same instruction on
it's worklist more than once (which is ok), but then deleted the instruction.
Since the inst stayed on the worklist, as soon as it came back up to be
processed, bad things happened, and opt asserted."
llvm-svn: 2623
2002-05-14 15:24:07 +00:00
Chris Lattner
adba963886
Add support for printing out statistics information when -stats is added to
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the command line
llvm-svn: 2601
2002-05-10 15:38:35 +00:00
Chris Lattner
cd326f096f
Handle setcc <global*>, 0 instructions, Global pointers are never null!
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llvm-svn: 2582
2002-05-09 20:11:54 +00:00
Chris Lattner
172488eb68
Add ability to transform (x - (y - z)) into (x + (z - y))
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llvm-svn: 2566
2002-05-09 01:29:19 +00:00
Chris Lattner
34d5891f0a
* Combine: A-(-B) -> A + B
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* Bugfix: A + -B and -A + B
llvm-svn: 2561
2002-05-08 22:46:53 +00:00
Chris Lattner
2a43c7c03d
Merge all individual .h files into a single Scalar.h file
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llvm-svn: 2537
2002-05-07 20:03:00 +00:00
Chris Lattner
c5a6d978b8
Reduce dependance on TransformInternals.h, instead using the TransformUtils library
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llvm-svn: 2518
2002-05-07 18:12:18 +00:00
Chris Lattner
ca538273d4
Only do masking for unsigned values!
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llvm-svn: 2504
2002-05-06 18:54:59 +00:00
Chris Lattner
24ebec1273
Handle X = phi Y --> X = Y
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llvm-svn: 2501
2002-05-06 18:06:38 +00:00
Chris Lattner
c5279917bc
Combine not (not X) -> X
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llvm-svn: 2493
2002-05-06 17:03:21 +00:00
Chris Lattner
24a94a50d8
Support more cases...
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llvm-svn: 2490
2002-05-06 16:49:18 +00:00
Chris Lattner
24ebdf3f74
Add many more instruction combination simplifications
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llvm-svn: 2484
2002-05-06 16:14:14 +00:00
Chris Lattner
b7df910c1a
* Add ability to eliminate a bunch of different cascading cast variations
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* Allow elimination of getelementptr X, uint 0 (which is a noop)
llvm-svn: 2428
2002-05-02 17:06:02 +00:00
Chris Lattner
a6cb49c533
Add folding rules for mul X, 0 and mul X, 2
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llvm-svn: 2417
2002-04-29 22:24:47 +00:00
Chris Lattner
96e0c48175
Eliminate duplicate or unneccesary #include's
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llvm-svn: 2397
2002-04-29 17:42:12 +00:00
Chris Lattner
589debc4ba
Add new optional getPassName() virtual function that a Pass can override
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to make debugging output a lot nicer.
llvm-svn: 2395
2002-04-29 14:57:45 +00:00
Chris Lattner
ec70d92221
Tighten up the AnalysisUsage of lots of passes, primarily to correctly indicate whether or not they invalidate the CFGA
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llvm-svn: 2386
2002-04-28 21:27:06 +00:00
Chris Lattner
536cf1b13f
* Rename MethodPass class to FunctionPass
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- Rename runOnMethod to runOnFunction
* Transform getAnalysisUsageInfo into getAnalysisUsage
- Method is now const
- It now takes one AnalysisUsage object to fill in instead of 3 vectors
to fill in
- Pass's now specify which other passes they _preserve_ not which ones
they modify (be conservative!)
- A pass can specify that it preserves all analyses (because it never
modifies the underlying program)
* s/Method/Function/g in other random places as well
llvm-svn: 2333
2002-04-27 06:56:12 +00:00
Chris Lattner
078d292f4c
Change Constant::getNullConstant to Constant::getNullValue
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llvm-svn: 2323
2002-04-27 02:25:14 +00:00
Chris Lattner
a392a80a60
Significantly rework InstructionCombining to work better and to be cleaner.
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We now use an InstVisitor to delegate to different cases that we are
interested in handling. We also fix the FIXME's by adding users to the
worklist when appropriate.
llvm-svn: 2292
2002-04-18 17:39:14 +00:00
Chris Lattner
5e7d6d8066
Store instructions always return void, so they never get a name
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llvm-svn: 2283
2002-04-18 14:43:54 +00:00
Chris Lattner
1923a5cfaa
Eliminate cast of same type instructions.
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llvm-svn: 2251
2002-04-15 19:45:29 +00:00
Chris Lattner
44f14449c4
ConstantHandling moved into VMCore library
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llvm-svn: 2165
2002-04-08 20:18:09 +00:00
Chris Lattner
bc15ae64dd
Change references to the Method class to be references to the Function
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class. The Method class is obsolete (renamed) and all references to it
are being converted over to Function.
llvm-svn: 2144
2002-04-07 20:49:59 +00:00
Chris Lattner
b0128957b1
Fix bug: test/Regression/Other/2002-03-11-InstCombineHang.ll
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llvm-svn: 1864
2002-03-11 23:28:45 +00:00
Chris Lattner
e2383e8592
Change over to use new style pass mechanism, now passes only expose small
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creation functions in their public header file, unless they can help it.
llvm-svn: 1816
2002-02-26 21:46:54 +00:00
Chris Lattner
8e9be000a7
* Pull BasicBlock::pred_* and BasicBlock::succ_* out of BasicBlock.h and into
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llvm/Support/CFG.h
* Make pred & succ iterators for intervals global functions
* Add #includes that are now neccesary because BasicBlock.h doesn't include
InstrTypes.h anymore
llvm-svn: 1750
2002-02-12 22:39:50 +00:00
Chris Lattner
b0a2c5546b
Method.h no longer includes BasicBlock.h
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Method::inst_* is now in llvm/Support/InstIterator.h
GraphTraits specializations for BasicBlock and Methods are now in llvm/Support/CFG.h
llvm-svn: 1746
2002-02-12 21:07:25 +00:00
Chris Lattner
4454cdc5c0
Move stuff out of the Optimizations directories into the appropriate Transforms
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directories. Eliminate the opt namespace.
llvm-svn: 1520
2002-01-21 23:17:48 +00:00
Chris Lattner
3dc9a2a61f
Changes to build successfully with GCC 3.02
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llvm-svn: 1503
2002-01-20 22:54:45 +00:00
Chris Lattner
37ba4e2bb7
initial checkin
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llvm-svn: 1480
2001-12-14 16:52:21 +00:00