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4864 Commits

Author SHA1 Message Date
Reid Spencer
091d6cf3b7 Don't invoke undefined behavior in shifts in the functions getHighBitsSet 
and getLowBitsSet.

llvm-svn: 35311
 2007-03-24 23:35:54 +00:00
Reid Spencer
0e466b183f Implement the getBitsSet function. 
llvm-svn: 35310
 2007-03-24 23:27:48 +00:00
Reid Spencer
1aa3f64ef4 Implement the getHighBitsSet and getLowBitsSet functions. 
llvm-svn: 35308
 2007-03-24 23:05:35 +00:00
Reid Spencer
30351837ca Get the signs in the right place! 
llvm-svn: 35307
 2007-03-24 22:50:43 +00:00
Reid Spencer
0ceb493ee2 Undo the last change and make this really implement remainder and not 
modulus. The previous change was a result of incorrect documentation in
the LangRef.html.

llvm-svn: 35305
 2007-03-24 22:37:23 +00:00
Reid Spencer
c1dfceab8b Correct the implementation of srem to be remainder, not modulus. The sign of 
the result must follow the sign of the divisor.

llvm-svn: 35302
 2007-03-24 21:56:22 +00:00
Reid Spencer
52ea41bb97 Clean up this interface: 
1. Group similar methods into doxygen groups
2. Reorganize the groups into a consist flow.
3. Significantly improve the quality of the documentation on several methods
4. Rewrite srem and sdiv to eliminate a copy and improve readability.
5. Eliminate unneeded forward references.

llvm-svn: 35300
 2007-03-24 18:09:18 +00:00
Chris Lattner
3a16450eaf add a valuetype for v1i64, which is needed by mmx. 
llvm-svn: 35298
 2007-03-24 17:36:26 +00:00
Bill Wendling
ad01036d5c This is dead. DEAD I tells you!! 
llvm-svn: 35291
 2007-03-23 22:42:04 +00:00
Bill Wendling
124f2c8706 PR1260: 
Add final support to get the QT example to compile.

llvm-svn: 35290
 2007-03-23 22:35:46 +00:00
Dan Gohman
42a3f4e16e Add the 'explicit' keyword to several constructors that accept one 
argument that don't appear intended as implicit-conversion operators.

llvm-svn: 35280
 2007-03-23 18:44:11 +00:00
Bill Wendling
e6a9c6dfe6 We generate a shufflevector instruction, so we don't need the builtin 
intrinsic.

llvm-svn: 35269
 2007-03-22 20:29:26 +00:00
Jeff Cohen
2f87ca6cc7 Be more explicit concerning argument sizes. 
Use VC++ byteswap intrinsics.

llvm-svn: 35267
 2007-03-22 19:11:57 +00:00
Bill Wendling
1bcad4c1cd Support added for shifts and unpacking MMX instructions. 
llvm-svn: 35266
 2007-03-22 18:42:45 +00:00
Reid Spencer
17f3eeaf48 For PR1145: 
Add the NoUnwindAttribute to allow explicit marking of functions that do
not unwind the stack via the unwind instruction. This is akin to gcc's
NoThrow attribute and used for optimizing exception handling.

llvm-svn: 35250
 2007-03-22 00:32:02 +00:00
Reid Spencer
76c1fef30a Fix a comment. 
llvm-svn: 35246
 2007-03-21 22:22:19 +00:00
Dale Johannesen
44c0a5d545 repair x86 performance, dejagnu problems from previous change 
llvm-svn: 35245
 2007-03-21 21:51:52 +00:00
Dale Johannesen
3e422e3b49 do not share old induction variables when this would result in invalid 
instructions (that would have to be split later)

llvm-svn: 35227
 2007-03-20 21:54:54 +00:00
Dale Johannesen
50a22f6fe6 maintain LiveIn when splitting blocks (register scavenging needs it) 
llvm-svn: 35226
 2007-03-20 21:35:06 +00:00
Devang Patel
19dae84536 LoopSimplify::FindPHIToPartitionLoops() 
Use ETForest instead of DominatorSet.

llvm-svn: 35222
 2007-03-20 20:19:48 +00:00
Evan Cheng
0176b9859d First cut trivial re-materialization support. 
llvm-svn: 35208
 2007-03-20 08:13:50 +00:00
Evan Cheng
41f4f032ee Added MRegisterInfo hook to re-materialize an instruction. 
llvm-svn: 35205
 2007-03-20 08:09:38 +00:00
Zhou Sheng
a9c0018850 Correct the name: isStrictPositive --> isStrictlyPositive. 
llvm-svn: 35201
 2007-03-20 02:18:16 +00:00
Chris Lattner
305c3525af Add a dtor to fix leaks from all clients of BitVector. 
llvm-svn: 35200
 2007-03-20 02:10:56 +00:00
Reid Spencer
7d20e42a97 Allow ConstantInt::get(Ty, uint64_t) to interpret the 64-bit values as a 
negative number. This is needed to fix test/Assembler/2007-03-19-NegValue.ll

llvm-svn: 35181
 2007-03-19 20:39:08 +00:00
Reid Spencer
c3422e56d6 Add an indication of signedness to the uint64_t constructor so sign bits 
can be extended. This helps fix test/Assembler/2007-03-19-NegValue.ll

llvm-svn: 35179
 2007-03-19 20:36:48 +00:00
Duncan Sands
90c42a15d5 Fix obvious typo in comment. 
llvm-svn: 35164
 2007-03-19 14:25:02 +00:00
Evan Cheng
2081cf96ed Add a TargetInstrDescriptor flag to mark an instruction as "re-materializable". 
It means the instruction can be easily re-materialized at any point. e.g.
constant generation, load from constantpool.

llvm-svn: 35158
 2007-03-19 06:19:16 +00:00
Zhou Sheng
6ecf1045a6 Add isStrictPositive() to APInt to determine if this APInt Value > 0. 
llvm-svn: 35156
 2007-03-19 05:22:18 +00:00
Evan Cheng
1d943badac Fix comment. 
llvm-svn: 35139
 2007-03-18 03:26:04 +00:00
Evan Cheng
5be8544e8a Track the BB's where each virtual register is used. 
llvm-svn: 35135
 2007-03-17 09:29:54 +00:00
Evan Cheng
ce8b779c6c Added isLegalAddressExpression hook to test if the given expression can be 
folded into target addressing mode for the given type.

llvm-svn: 35121
 2007-03-16 08:42:32 +00:00
Evan Cheng
0408dc0d37 These forward declarations are not needed. 
llvm-svn: 35120
 2007-03-16 08:41:06 +00:00
Bill Wendling
feaff80149 Multiplication support for MMX. 
llvm-svn: 35118
 2007-03-15 21:24:36 +00:00
Jeff Cohen
b19ec59b5c Fix for VS 2005 problem supplied by Morten Ofstad. 
llvm-svn: 35098
 2007-03-14 15:25:21 +00:00
Zhou Sheng
dfcf9376bc Add zextOrCopy() into APInt for convenience. 
llvm-svn: 35079
 2007-03-13 06:16:26 +00:00
Evan Cheng
f132fa5bba More flexible TargetLowering LSR hooks for testing whether an immediate is 
a legal target address immediate or scale.

llvm-svn: 35071
 2007-03-12 23:26:27 +00:00
Zhou Sheng
9643d0a422 Add getSignBit() and operator<<= into APInt for convenience. 
llvm-svn: 35059
 2007-03-11 07:16:10 +00:00
Nick Lewycky
2af4a3ab17 Add getter methods for the extremes of a ConstantRange. 
llvm-svn: 35056
 2007-03-10 15:54:12 +00:00
Bill Wendling
236cfc4344 Adding more arithmetic operators to MMX. This is an almost exact copy of 
the addition. Please let me know if you have suggestions.

llvm-svn: 35055
 2007-03-10 09:57:05 +00:00
Bill Wendling
5fef3fd7e7 Added "padd*" support for MMX. Added MMX move stuff to X86InstrInfo so that 
moves, loads, etc. are recognized.

llvm-svn: 35031
 2007-03-08 22:09:11 +00:00
Evan Cheng
6bf2f3665e Add ReadOnlySection directive. 
llvm-svn: 35015
 2007-03-08 01:00:38 +00:00
Evan Cheng
7513c95267 Added ContainsRelocations() to check if a constant might only be resolvable at load time. 
llvm-svn: 35014
 2007-03-08 00:59:12 +00:00
Anton Korobeynikov
85d6c1ebad Refactoring of formal parameter flags. Enable properly use of 
zext/sext/aext stuff.

llvm-svn: 35008
 2007-03-07 16:25:09 +00:00
Evan Cheng
d4fb00bb6b Add a utility function to test whether a load is unindexed. 
llvm-svn: 35004
 2007-03-07 08:04:41 +00:00
Devang Patel
6a56e3c1a0 Now IndVarSimplify is a LoopPass. 
llvm-svn: 35003
 2007-03-07 06:39:01 +00:00
Devang Patel
16107bb71b Now LICM is a LoopPass. 
llvm-svn: 35001
 2007-03-07 04:41:30 +00:00
Anton Korobeynikov
090c2d50ea Fix DWARF debugging information on x86/Linux and (hopefully) 
Mingw32/Cygwin targets. This fixes PR978

llvm-svn: 35000
 2007-03-07 02:47:57 +00:00
Evan Cheng
4161981d63 Add skipTo to set internal iterator. Useful when pointed to instruction is deleted. 
llvm-svn: 34997
 2007-03-07 02:36:16 +00:00
Devang Patel
3a24891f80 Now LoopUnroll is a LoopPass. 
llvm-svn: 34996
 2007-03-07 01:38:05 +00:00
Devang Patel
c35610b9f9 Now LoopUnswitch is a LoopPass. 
llvm-svn: 34992
 2007-03-07 00:26:10 +00:00
Devang Patel
0b82378a28 Now LoopStrengthReduce is a LoopPass. 
llvm-svn: 34984
 2007-03-06 21:14:09 +00:00
Devang Patel
57322d0462 Use schedulePass() instead of assignPassManager() to add new LPPassManager. 
This ensures that require analysis info is available.

llvm-svn: 34980
 2007-03-06 19:11:25 +00:00
Devang Patel
b44e86318e Add LPPassManager::insertLoop(). 
llvm-svn: 34979
 2007-03-06 19:00:02 +00:00
Devang Patel
8490ffbcdc LPPassManager::deleteLoopFromQueue() add meat. Cut-n-paste code from 
LoopUnswitch pass.

llvm-svn: 34977
 2007-03-06 18:38:33 +00:00
Devang Patel
d3cf506865 LPPassManager. Implement preparePassManager() hook. 
llvm-svn: 34975
 2007-03-06 17:59:37 +00:00
Devang Patel
b9e705f09e Keep track of higher level analysis. 
llvm-svn: 34974
 2007-03-06 17:52:53 +00:00
Devang Patel
e3abf559e5 LPPassManager : Add initialization and finalizatino hooks. 
llvm-svn: 34968
 2007-03-06 16:59:03 +00:00
Evan Cheng
b0c0d22f30 Minor interface change. 
llvm-svn: 34967
 2007-03-06 10:05:14 +00:00
Evan Cheng
077516f441 Register scavenger is now capable of scavenging. It spills a register whose use of furthest away to make it available. 
llvm-svn: 34964
 2007-03-06 10:01:25 +00:00
Anton Korobeynikov
4558f01db9 Enumerate SDISel formal parameter attributes. Make use of new 
enumeration.

llvm-svn: 34960
 2007-03-06 06:10:33 +00:00
Anton Korobeynikov
d0375d0852 Implement PR1240 
llvm-svn: 34959
 2007-03-06 05:32:48 +00:00
Reid Spencer
564f193ad0 Make StoreValueToMemory a little more efficient by not copying a 
GenericValue to a temporary.

llvm-svn: 34957
 2007-03-06 05:02:28 +00:00
Reid Spencer
b5e0b0bc5e Make GenericeValue into a struct with a union instead of just a union. This 
allows an APInt value to be constructed. Remove all the native integer types
from the union. These are replaced with the single IntVal of type APInt.

llvm-svn: 34945
 2007-03-06 03:01:54 +00:00
Devang Patel
e4da6fa801 Use std::deque to manage loop queue inside LPPassManager. 
llvm-svn: 34943
 2007-03-06 02:30:46 +00:00
Devang Patel
45343b04b3 Keep track of inherited analysis. For example, if a loop pass does not 
preserve dominator info then it should update parent FPPassManager's
available analysis info to reflect this.

llvm-svn: 34942
 2007-03-06 01:55:46 +00:00
Devang Patel
edbde240be Add preparePassManager() hook. This allows each pass to check whether 
current active pass manager is appropriate or not.

A loop pass may consider current LPPassManager in appropraite if loop
pass is not preserving analysis information that is used by other
passes managed by current LPPassManager. In such situation, loop pass
can pop current LPPassManager from the PMStack using this  hook
and use new LPPassManager for itself.

llvm-svn: 34941
 2007-03-06 01:06:16 +00:00
Bill Wendling
c52174dee3 Add the emms intrinsic for MMX support. 
llvm-svn: 34938
 2007-03-05 23:09:45 +00:00
Reid Spencer
5ecf7f6214 Document the use of getValueType() more accurately, specifically explain 
that the instruction opcode is added to the InstructionVal value and the
consequences of that.

llvm-svn: 34937
 2007-03-05 23:06:32 +00:00
Devang Patel
79495d839e Current pass manager, not the parent pass manager, assumes the role of 
last user when one of the managed pass uses info provided by parent pass
manager.

This was exposed by LPPassManager work.

llvm-svn: 34936
 2007-03-05 22:57:49 +00:00
Devang Patel
6668a341ae Avoid constructing std::strings unless pass debugging is ON. 
llvm-svn: 34933
 2007-03-05 20:01:30 +00:00
Jeff Cohen
84d84f7381 The hack won't work on VS 2005, and it might not be needed anyway. 
llvm-svn: 34930
 2007-03-05 17:22:33 +00:00
Zhou Sheng
b6d1ac8682 Correct the calculation in APInt::logBase2(). 
llvm-svn: 34929
 2007-03-05 16:42:58 +00:00
Jeff Cohen
b58af23ff3 Elminate tabs and improve comments. 
llvm-svn: 34921
 2007-03-05 00:46:22 +00:00
Jeff Cohen
98c99a3a02 Unbreak VC++ build. 
llvm-svn: 34917
 2007-03-05 00:00:42 +00:00
Chris Lattner
7fdddda045 add a getSignBit method, elimiante virtual method from getBitMask() 
llvm-svn: 34916
 2007-03-04 23:33:19 +00:00
Chris Lattner
69aafa4be8 fix 80 col violations, mark arrays static 
llvm-svn: 34915
 2007-03-04 23:33:03 +00:00
Chris Lattner
295b3d69b1 add a new node 
llvm-svn: 34912
 2007-03-04 20:40:06 +00:00
Chris Lattner
2510829eba add iterator range version of ctor. 
llvm-svn: 34899
 2007-03-04 04:04:43 +00:00
Reid Spencer
cdb5aa2805 Make the creation functions take an error string. This will help the 
ExecutionEngine report errors on creation (like bytecode stuff) and also
help to get rid of exception handling.

llvm-svn: 34886
 2007-03-03 18:18:11 +00:00
Reid Spencer
e96b55e61f Require the destination GlobalValue for LoadValueFromMemory to be passed 
in as a parameter instead of returned.

llvm-svn: 34882
 2007-03-03 08:35:14 +00:00
Reid Spencer
e2bf55dfe8 Regularize the interface for conversion functions to/from float/double. 
llvm-svn: 34881
 2007-03-03 08:34:02 +00:00
Reid Spencer
36fb227e99 Add APIntVal as a possible GenericeValue. 
llvm-svn: 34879
 2007-03-03 07:36:44 +00:00
Reid Spencer
503dda5840 Make getNumWords public so that those using getRawData stand a chance of 
not reading beyond the end of the buffer returned.

llvm-svn: 34873
 2007-03-03 06:17:23 +00:00
Reid Spencer
47b01d6acb Add names for some of the operators. This is needed for the macros in 
the Interpreter.

llvm-svn: 34872
 2007-03-03 05:37:23 +00:00
Reid Spencer
e5244b132b Add isPositive for symmetry with isNegative. 
llvm-svn: 34862
 2007-03-03 00:24:39 +00:00
Anton Korobeynikov
af46a0e4a2 Fix uninitialized use of variable. Remove tabs and fix identation. 
llvm-svn: 34850
 2007-03-02 22:19:41 +00:00
Chris Lattner
68244ce570 Fix PR1234 by working around a compiler bug. 
llvm-svn: 34845
 2007-03-02 18:16:29 +00:00
Owen Anderson
6d3b179de3 Fix a typo. 
llvm-svn: 34836
 2007-03-02 05:03:07 +00:00
Evan Cheng
44257955c8 Make it 64-bit safe. 
llvm-svn: 34829
 2007-03-02 02:31:37 +00:00
Reid Spencer
53a673b3ed Add a non-virtual test for zero, isZero, and rename isUnitValue isOne. 
These will be used in upcoming patches to avoid virtual function call when
the client knows it is a ConstantInt.

llvm-svn: 34820
 2007-03-02 00:27:06 +00:00
Reid Spencer
d86182b19b Add an abs() function to get the absolute value. 
llvm-svn: 34819
 2007-03-01 23:37:09 +00:00
Reid Spencer
c5d33cef76 Remove virtual keyword from method that doesn't need to be virtual. 
llvm-svn: 34817
 2007-03-01 23:20:52 +00:00
Reid Spencer
ee77d22f26 Make it possible to create an SCEVUnknown from an APInt as well as an int. 
llvm-svn: 34816
 2007-03-01 22:28:51 +00:00
Reid Spencer
2ce72a4bd8 Add an isUnitValue method for comparison against 1. This just follows a 
common pattern with isNullValue, isAllOnesValue, etc. It also helps to
prevent things like getZExtValue() == 1, which could assert for large
bitwidths.

llvm-svn: 34813
 2007-03-01 21:50:41 +00:00
Owen Anderson
070c37407c Use GCC intrinsics when available, and use smarter fallbacks when not. 
llvm-svn: 34812
 2007-03-01 21:16:30 +00:00
Reid Spencer
003170430b Add doubleToBits and floatToBits methods. 
llvm-svn: 34807
 2007-03-01 20:39:01 +00:00
Jim Laskey
73e3ad1b10 Collect eh filter info. 
llvm-svn: 34804
 2007-03-01 20:25:32 +00:00
Jim Laskey
88c98a4128 Add eh filter intrinsic. 
llvm-svn: 34801
 2007-03-01 20:23:39 +00:00
Reid Spencer
90b6227b81 Add bitsToDouble and bitsToFloat methods for re-interpretation of bits as FP. 
llvm-svn: 34800
 2007-03-01 20:06:51 +00:00
Reid Spencer
b4e877c488 Drop the ConstantInt(const Type&, const APInt&) constructor. It is 
redundant and more verbose than the ConstantInt(const APInt&) constructor.

llvm-svn: 34792
 2007-03-01 19:30:34 +00:00
Reid Spencer
6a95676875 Add methods for bit width modification: sextOrTrunc, zextOrTrunc. 
llvm-svn: 34789
 2007-03-01 17:15:32 +00:00
Evan Cheng
0aa68b9246 Add a version of FindUnusedReg that restrict search to a specific set of registers. 
llvm-svn: 34784
 2007-03-01 08:56:24 +00:00
Reid Spencer
3f3487918c Remove the "isSigned" parameters from ConstantRange. It turns out they 
are not needed as the results are the same with or without it.

Patch by Nicholas Lewycky.

llvm-svn: 34782
 2007-03-01 07:54:15 +00:00
Owen Anderson
cbbf9aa6b0 Use the GCC built-in for PopulationCount when it's available, and use a faster 
algorithm when it's not.  This should be particularly noticeable in the
64-bit case.

llvm-svn: 34776
 2007-03-01 05:41:28 +00:00
Reid Spencer
b6dd32889e Add a square root function. 
llvm-svn: 34775
 2007-03-01 05:39:56 +00:00
Reid Spencer
32d0051c64 Reduce #includage by taking a method out of line. 
llvm-svn: 34774
 2007-03-01 04:02:06 +00:00
Reid Spencer
4937dcdf1f Add an IntegerType::getMask() method to get an APInt mask for the type. 
llvm-svn: 34771
 2007-03-01 02:25:03 +00:00
Evan Cheng
b2afac27e9 Clean up interface. 
llvm-svn: 34769
 2007-03-01 02:18:06 +00:00
Evan Cheng
d1fa618990 Track all joined registers and eliminate unneeded kills after all joining are done. 
llvm-svn: 34767
 2007-03-01 02:03:03 +00:00
Evan Cheng
0c89fbb835 MachineBasicBlock fields should not be public. 
llvm-svn: 34766
 2007-03-01 02:00:40 +00:00
Reid Spencer
f119927a6f Move ConstantRange class to lib/Support from lib/Analysis and make its 
interface not depend on Type or ICmpInst.

llvm-svn: 34761
 2007-02-28 22:02:48 +00:00
Reid Spencer
f632e1cd14 Provide an ICmpInst::makeConstantRange to generate a ConstantRange value 
from a predicate and an APInt. This is removed from ConstantRange class
so that ConstantRange doesn't have to depend on lib/VMCore.

llvm-svn: 34760
 2007-02-28 22:00:54 +00:00
Reid Spencer
965067a054 For PR1205: 
Remove ConstantInt from ConstantRange interface and adjust its users to
compensate.

llvm-svn: 34758
 2007-02-28 19:57:34 +00:00
Reid Spencer
a9d0cc903b Implement a convenience method to construct a ConstantInt directly from an 
APInt. The implied type is the integer type that corresponds to the bit
width of the APInt.

llvm-svn: 34757
 2007-02-28 19:50:21 +00:00
Reid Spencer
e2b4631435 For PR1205: 
First round of ConstantRange changes. This makes all CR constructors use
only APInt and not use ConstantInt. Clients are adjusted accordingly.

llvm-svn: 34756
 2007-02-28 18:57:32 +00:00
Jim Laskey
1fea0fa316 Provide a more meaningful name. 
llvm-svn: 34751
 2007-02-28 18:37:50 +00:00
Reid Spencer
2b933467ad For PR1205: 
Convert ConstantRange class to use APInt internally as its value type for
the constant range, instead of ConstantInt.

llvm-svn: 34745
 2007-02-28 17:36:23 +00:00
Reid Spencer
0f2d45e42c Make APInt a little more friendly to its users: 
* Add support for + and - of a uint64_t.
  * Make trunc/sext/zext return *this so it can be chained with other ops
  * Add smin, smax, umin, umax functions for getting min/max values.

llvm-svn: 34742
 2007-02-28 17:33:36 +00:00
Nate Begeman
2288ec3331 More Mach-O writer improvements. 
llvm-svn: 34740
 2007-02-28 07:40:50 +00:00
Chris Lattner
6d383bd2f1 add methods for analysis of call results and return nodes. 
llvm-svn: 34738
 2007-02-28 07:09:40 +00:00
Chris Lattner
a68a949ba5 add methods to analyze calls and formals. 
llvm-svn: 34736
 2007-02-28 06:56:37 +00:00
Reid Spencer
949b3612a8 getActiveWords should return the number of words, not the index of the 
highest active words. Increment its result by one.

llvm-svn: 34713
 2007-02-28 02:20:49 +00:00
Evan Cheng
db591ecaa8 Make requiresRegisterScavenging determination on a per MachineFunction basis. 
llvm-svn: 34711
 2007-02-28 00:59:19 +00:00
Evan Cheng
ee2e5de4fb MRegisterInfo disowns RegScavenger. It's immutable. 
llvm-svn: 34706
 2007-02-28 00:17:36 +00:00
Reid Spencer
355cec42d1 Add some syntactic sugar. 
llvm-svn: 34704
 2007-02-27 23:47:33 +00:00
Evan Cheng
ec12bdd7ea Some more code clean up. 
llvm-svn: 34700
 2007-02-27 22:58:43 +00:00
Evan Cheng
2402ddad92 Oops. 
llvm-svn: 34698
 2007-02-27 22:10:52 +00:00
Reid Spencer
edbe747bab Implement countLeadingOnes() and getMinSignedBits(). This helps to minimize 
the bit width of negative numbers by computing the minimum bit width for a
negative value. E.g. 0x1800000000000000 could be just 0x8000000000000000

llvm-svn: 34695
 2007-02-27 21:59:26 +00:00
Evan Cheng
f03b87c1ff RegScavenger interface change to make it more flexible. 
llvm-svn: 34690
 2007-02-27 21:09:48 +00:00
Evan Cheng
11d5b762b9 Let MRegisterInfo owns RegScavenger. 
llvm-svn: 34689
 2007-02-27 21:08:07 +00:00
Evan Cheng
561bf1736e Pass IsImp, IsKill, and IsDead to ChangeToRegister. 
llvm-svn: 34688
 2007-02-27 21:06:57 +00:00
Reid Spencer
9e66d0921a Improve APInt interface: 
1. Add unsigned and signed versions of methods so a "bool" argument doesn't
   need to be passed in.
2. Make the various getMin/getMax functions all be inline since they are
   so simple.
3. Simplify sdiv and srem code.

llvm-svn: 34680
 2007-02-27 20:24:31 +00:00
Reid Spencer
612dfe195b Allow the RoundDoubleToAPInt function to specify a width to use. 
llvm-svn: 34672
 2007-02-27 18:22:31 +00:00
Devang Patel
89791371ce Make getPassManagerType() const. 
llvm-svn: 34669
 2007-02-27 15:00:39 +00:00
Chris Lattner
11a1c2113c Minor refactoring of CC Lowering interfaces 
llvm-svn: 34656
 2007-02-27 05:13:54 +00:00
Chris Lattner
e34136f6d5 move CC Lowering stuff to its own public interface 
llvm-svn: 34655
 2007-02-27 04:43:02 +00:00
Evan Cheng
341fc2bf88 forward() should not increment internal iterator. Its client may insert instruction between now and next forward() call. 
llvm-svn: 34649
 2007-02-27 01:58:48 +00:00
Reid Spencer
c8cc0f997e For PR1205: 
Implement the first step towards arbitrary precision integer support in
LLVM. The APInt class provides arbitrary precision arithmetic and value
representation. This patch changes ConstantInt to use APInt as its value
representation without supporting bit widths > 64 yet. That change will
come after ConstantFolding handles bit widths > 64 bits.

llvm-svn: 34647
 2007-02-26 23:54:03 +00:00
Evan Cheng
0fd5788077 Joining an interval with a dead copy instruction. Shorten the live range to the last use. 
llvm-svn: 34645
 2007-02-26 21:37:37 +00:00
Reid Spencer
9bc19eab08 Fix indentation. 
llvm-svn: 34643
 2007-02-26 21:06:05 +00:00
Reid Spencer
18629544d3 1. Split getValue() into getSExtValue() and getZExtValue() to match 
ConstantInt better.
2. Add a getHashValue() method.

llvm-svn: 34641
 2007-02-26 20:57:12 +00:00
Reid Spencer
11f19f730c Implement inline methods that make transition of ConstantInt to use APInt 
easier to comprehend and might be useful elsewhere.

llvm-svn: 34635
 2007-02-26 17:50:32 +00:00
Reid Spencer
1252a271a1 Make isNegative() a const function since it doesn't modify the APInt. 
llvm-svn: 34630
 2007-02-26 07:45:40 +00:00
Reid Spencer
e8e8ea4fba Add an isNegative method to determine if the APInt's value is negative. 
This is much less expensive than a test against zero.

llvm-svn: 34619
 2007-02-26 01:20:59 +00:00
Chris Lattner
50be7cd320 Rework GlobalValue::removeDeadConstantUsers to always remove dead constant 
exprs hanging off a global, even if the global is not otherwise dead.  This
requires some tricky iterator gymnastics.

This implements Transforms/GlobalOpt/constantexpr-dangle.ll by deleting a
constantexpr that made it appear that the address of the function was taken.

llvm-svn: 34608
 2007-02-25 21:06:13 +00:00
Reid Spencer
a4ab1c36d2 Fix clearUnusedBits to not depend on "undefined behavior" of >> operator 
when the bit size is equal to the word size. This happens to work out okay
on x86, but might not on other platforms. The change just detects when
there are no bits to clear (because BitWidth is a multiple of the word size)
and returns early.

Also, move some comments from .cpp file into header.

llvm-svn: 34602
 2007-02-25 19:26:01 +00:00
Reid Spencer
e7d8a0e3b7 Add a private constructor for efficiency. 
llvm-svn: 34580
 2007-02-25 07:29:03 +00:00
Reid Spencer
a2a4a55915 Improve documentation. 
Make divide function internal (it was briefly external for testing).

llvm-svn: 34557
 2007-02-24 09:50:13 +00:00
Chris Lattner
0eb72353e4 Refactor the setName stuff, moving it down the inheritance hierarchy, to 
solve a crash in -instcombine -debug that was hit while investigating PR1217

llvm-svn: 34544
 2007-02-24 00:55:48 +00:00
Devang Patel
06b8983669 Loop passes are set up to accept pointer. 
llvm-svn: 34527
 2007-02-23 17:53:17 +00:00
Evan Cheng
df6be7d4fc Temporay hook to enable register scavening for specific targets only. 
llvm-svn: 34513
 2007-02-23 01:07:04 +00:00
Evan Cheng
387f1c2bdf Use findRegisterUseOperand to find a kill of particular register. 
llvm-svn: 34512
 2007-02-23 01:04:26 +00:00
Evan Cheng
f9ef2bfd8a Initial check in of register scavenger. Its only current functionality is tracking live registers per MBB. 
llvm-svn: 34511
 2007-02-23 01:01:19 +00:00
Devang Patel
46cad14ab8 Teach LoopPass to assign itself one Loop Pass Manager. 
llvm-svn: 34510
 2007-02-23 00:36:57 +00:00
Devang Patel
9a7b18fa3d Add facility that allows LoopPass to re-insert a loop into 
Loop Pass Manager's queue.

llvm-svn: 34509
 2007-02-23 00:16:44 +00:00
Devang Patel
bbfd00e658 Add LPPassManager interface that LoopPass can use to skip 
rest of the passes in the queue for a loop.

llvm-svn: 34508
 2007-02-23 00:10:16 +00:00
Evan Cheng
6b25288ab7 Copy and paste silliness. 
llvm-svn: 34507
 2007-02-22 23:52:23 +00:00
Devang Patel
b170ebf833 Add LoopQueue. This is used by loop pass manager to manage loop nest. 
llvm-svn: 34504
 2007-02-22 23:30:07 +00:00
Evan Cheng
68e7fe47f6 Remove unnecessary isKill properties if a live range has been lengthened due to coalescing. 
llvm-svn: 34503
 2007-02-22 23:03:39 +00:00
Jim Laskey
d16ed8329e Typo. 
llvm-svn: 34498
 2007-02-22 16:40:10 +00:00
Jim Laskey
8c79f0f892 Remove isAccessable. 
llvm-svn: 34497
 2007-02-22 16:39:03 +00:00
Jim Laskey
655bea55fe Simplify lowering and selection of exception ops. 
llvm-svn: 34491
 2007-02-22 15:37:19 +00:00
Jim Laskey
b57ee1fc37 Simplify lowering and selection of exception ops. 
llvm-svn: 34488
 2007-02-22 14:56:36 +00:00
Devang Patel
aabb87cffe Add Loop Pass Manager. 
llvm-svn: 34487
 2007-02-22 08:56:17 +00:00
Jim Laskey
6a937ad320 Support to provide exception and selector registers. 
llvm-svn: 34482
 2007-02-21 22:54:50 +00:00
Jim Laskey
bce43df323 Add support for changes in DwarfWriter. 
llvm-svn: 34478
 2007-02-21 22:47:38 +00:00
Jim Laskey
d1e09aa74a Add TAI field for exception table section. 
llvm-svn: 34477
 2007-02-21 22:43:40 +00:00
Jim Laskey
1ac1a19f01 Allow for live in registers for eh landing pads. 
llvm-svn: 34475
 2007-02-21 22:41:17 +00:00
Jim Laskey
8fdff03f2b Add a flag to MBBs to indicate whether it is an eh landing pad. 
llvm-svn: 34474
 2007-02-21 22:39:52 +00:00
Jim Laskey
534bc5a9a3 Add structures used for collecting eh information. 
llvm-svn: 34473
 2007-02-21 22:38:31 +00:00
Jim Laskey
013a72ffd4 Add new instructions for handling data passed into eh landing pad. 
llvm-svn: 34472
 2007-02-21 22:37:22 +00:00
Jim Laskey
c13cc1eac7 Add new intrinsics for eh support. 
llvm-svn: 34471
 2007-02-21 22:35:57 +00:00
Devang Patel
ee1da8a703 Simplify 
llvm-svn: 34469
 2007-02-21 19:57:33 +00:00
Reid Spencer
807eadb51a Add a dump() method for debugging. 
llvm-svn: 34464
 2007-02-21 03:56:12 +00:00
Devang Patel
96f62d7c95 Fix memory leak (PR 775). 
llvm-svn: 34462
 2007-02-21 02:36:31 +00:00
Reid Spencer
2e50b9ed5b Add an internal convenience method for division that urem and udiv use. 
llvm-svn: 34448
 2007-02-20 08:43:42 +00:00
Chris Lattner
b6ddd260ec eliminate some dead friends. 
llvm-svn: 34447
 2007-02-20 07:18:01 +00:00
Chris Lattner
37a49eb48d cleanup ConstantInt to use a single DenseMap for uniquing instead of the 
heavy-weight ValueMap class.  This reduces mem usage bc reading kc++ by 29K,
even though it only creates 2955 constant ints!

llvm-svn: 34445
 2007-02-20 06:39:57 +00:00
Chris Lattner
adb16a1a53 Make ConstantInt::getTrue/getFalse be llvm_shutdown safe. 
llvm-svn: 34443
 2007-02-20 06:11:36 +00:00
Chris Lattner
08e1470365 add a way to register an arbitrary cleanup function. 
llvm-svn: 34442
 2007-02-20 06:08:37 +00:00
Chris Lattner
c8db23f8a7 Clean up the internals of the ConstantInt machinery 
llvm-svn: 34441
 2007-02-20 05:55:46 +00:00
Chris Lattner
388222d25e remove some dead passes and stuff specific to the reoptimizer. 
llvm-svn: 34438
 2007-02-20 05:31:35 +00:00
Chris Lattner
71ced5505c remove some passes 
llvm-svn: 34437
 2007-02-20 05:31:04 +00:00
Reid Spencer
78e1ec0122 Implement support for non-standard integer bit widths of any size. The 
rules alignment is to pick the alignment that corresponds to the smallest
specified alignment that is larger than the bit width of the type or the
largest specified integer alignment if none are larger than the bitwidth
of the type. For the byte size, the size returned is the next larger
multiple of the alignment for that type (using the above rule). This patch
also changes bit widths from "short" to "uint32_t" to ensure there are
enough bits to specify any bit width that LLVM can handle (currently 2^23);
16-bits isn't enough.

llvm-svn: 34431
 2007-02-19 22:35:00 +00:00
Evan Cheng
e4ab9c032b Re-apply my liveintervalanalysis changes. Now with PR1207 fixes. 
llvm-svn: 34428
 2007-02-19 21:49:54 +00:00
Chris Lattner
f501d245c8 llvm-gcc issue fixed, revert reversal :) 
llvm-svn: 34425
 2007-02-19 20:01:23 +00:00
Evan Cheng
936deee790 Temporarily reverting the patch. It's breaking llvm-gcc build. 
llvm-svn: 34423
 2007-02-19 19:23:41 +00:00
Chris Lattner
865b2f741a remove dead methods 
llvm-svn: 34419
 2007-02-19 07:44:24 +00:00
Chris Lattner
35a14c07e4 add alternate version of constant ctors that don't take a vector. For now 
this offers no performance advantage.

llvm-svn: 34415
 2007-02-19 07:23:24 +00:00
Reid Spencer
b27fcf3482 For PR1207: 
Revert patches that caused the problem. Evan, please investigate and reapply
when you've discovered the problem.

llvm-svn: 34399
 2007-02-19 03:20:00 +00:00
Reid Spencer
6eb099875c Add some new constants. 
llvm-svn: 34398
 2007-02-19 03:18:22 +00:00
Reid Spencer
79d2fad9f5 1. "unsigned" -> "uint32_t" to gaurantee its bit width on all platforms. 
Size matters in this case.
2. Remove the unused whichByte private function, which was also broken.
3. Remove the non-const overload of the getWord function, getWord() is
   never used as an lvalue.
4. Rename some local variables for clarity (e.g. API -> Result).

llvm-svn: 34390
 2007-02-18 18:42:35 +00:00
Reid Spencer
62b55a934b Implement signed output for toString. 
Fix bugs in countLeadingZeros and countTrailingZeros.

llvm-svn: 34386
 2007-02-18 00:44:22 +00:00
Chris Lattner
dee1492159 temporarily revert Devang's most recent patch, which caused a large 
compile-time regression in LLC.

llvm-svn: 34385
 2007-02-17 23:14:24 +00:00
Evan Cheng
8ac045a4b2 - Changes how function livein's are handled, they now have a start index of 0. 
- When coalescing a copy MI, if its destination is "dead", propagate the
  property to the source MI's destination if there are no intervening uses.
- Detect dead function live-in's and remove them.

llvm-svn: 34383
 2007-02-17 11:15:40 +00:00
Evan Cheng
35f59a6dd2 Added findRegisterDefOperand(). 
llvm-svn: 34380
 2007-02-17 11:10:18 +00:00
Evan Cheng
2db4db48ed Added removeLiveIn and more livein iterators. 
llvm-svn: 34378
 2007-02-17 11:07:41 +00:00
Evan Cheng
ad05c398b1 Allow LiveVariables to track liveness of more registers. 
llvm-svn: 34377
 2007-02-17 11:07:08 +00:00
Evan Cheng
8f7896bacc - Added regsOverlap() to test if two registers overlap. Or in case they are 
virtual registers, test if they the same.
- Added a virtual method to return target specific reserved registers, e.g. SP.

llvm-svn: 34375
 2007-02-17 11:04:35 +00:00