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5119 Commits

Author SHA1 Message Date
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