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677 Commits

Author SHA1 Message Date
Chris Lattner
ad9a6ccb83 Remove attribution from file headers, per discussion on llvmdev. 
llvm-svn: 45418
 2007-12-29 20:36:04 +00:00
Chris Lattner
8193d4af33 remove attribution from lib Makefiles. 
llvm-svn: 45415
 2007-12-29 20:09:26 +00:00
Anton Korobeynikov
a0113f6c70 Cygwin defines uint32_t as unsigned long. Unbreak call to std::min in this case 
llvm-svn: 45342
 2007-12-24 11:16:47 +00:00
Reid Spencer
3a83a29e21 Don't have APInt.cpp depend upon DerivedTypes.h. This helps with splitting the 
Support libraries separately into their own module.

llvm-svn: 44852
 2007-12-11 06:53:58 +00:00
Chris Lattner
1fe38f35c1 proper #include order. 
llvm-svn: 44707
 2007-12-08 19:00:03 +00:00
Gordon Henriksen
e187dc4bfa Adding a StringPool data structure, which GC will use. 
llvm-svn: 44705
 2007-12-08 17:07:47 +00:00
Neil Booth
054a756682 Prior commit updated wrong if, apologies. 
llvm-svn: 44614
 2007-12-05 13:06:04 +00:00
Neil Booth
b5afbd8e5a Handle zero correctly. 
llvm-svn: 44613
 2007-12-05 13:01:24 +00:00
Dale Johannesen
15712dc45a Handle 0 correctly in string->APFloat conversion. 
llvm-svn: 44594
 2007-12-05 01:10:19 +00:00
Chris Lattner
36854c740d Fix PR1816, by correcting the broken definition of APInt::countTrailingZeros. 
llvm-svn: 44296
 2007-11-23 22:42:31 +00:00
Chris Lattner
57a40dc2ad Fix APInt::countTrailingZeros to return BitWidth if the input is zero instead of returning some random large number. 
llvm-svn: 44294
 2007-11-23 22:36:25 +00:00
Chris Lattner
56d872fcbb Fix the Linker testcase regressions, by making MemoryBuffer::getFileOrSTDIN return 
a valid but empty buffer if stdin is empty.

llvm-svn: 44219
 2007-11-18 18:52:28 +00:00
Dale Johannesen
ea47b8b77d Fix denormal check in float->APInt conversion. 
PR 1804.

llvm-svn: 44201
 2007-11-17 01:02:27 +00:00
Chris Lattner
edf6668dda make smallptrset more const and type correct, which caught a few 
minor bugs.

llvm-svn: 43782
 2007-11-06 22:12:43 +00:00
Neil Booth
cd1d243989 Remove some unnecessary C-style statics. 
Restore an assertion that arithmetic can be performed on this format.

llvm-svn: 43638
 2007-11-02 15:10:05 +00:00
Neil Booth
7eeb095d37 Add back line whose removal somehow crept into prior patch 
llvm-svn: 43627
 2007-11-01 22:51:07 +00:00
Neil Booth
d04447b7ae When converting to integer, do bit manipulations in the destination 
memory rather than in a copy of the APFloat.  This avoids problems
when the destination is wider than our significand and is cleaner.

Also provide deterministic values in all cases where conversion
fails, namely zero for NaNs and the minimal or maximal value
respectively for underflow or overflow.

llvm-svn: 43626
 2007-11-01 22:43:37 +00:00
Hartmut Kaiser
48b3098b43 Clarified operator precedence. 
Silenced VC++ warning.

llvm-svn: 43372
 2007-10-25 23:15:31 +00:00
Chris Lattner
cee5f18fb6 This requires rtti info because tblgen uses commandline, 
and tblgen requires rtti.

llvm-svn: 43127
 2007-10-18 15:57:29 +00:00
Neil Booth
e14f19eda6 Fast-track obviously over-large and over-small exponents during decimal-> 
integer conversion.  In some such cases this makes us one or two orders
of magnitude faster than NetBSD's libc.  Glibc seems to have a similar
fast path.

Also, tighten up some upper bounds to save a bit of memory.

llvm-svn: 42984
 2007-10-15 15:00:55 +00:00
Neil Booth
1463947f03 Consolidate logic for creating NaNs. Silence compiler warning. 
llvm-svn: 42966
 2007-10-14 10:39:51 +00:00
Neil Booth
138d8ef4a7 Whether arithmetic is supported is a property of the semantics. Make it 
so, and clean up the checks by putting them in an inline function.

llvm-svn: 42965
 2007-10-14 10:29:28 +00:00
Neil Booth
a352eb14cd Separate out parsing of decimal number. Use this to only allocate 
memory for the significand once up-front.  Also ignore insignificant
trailing zeroes; this saves unnecessary multiplications later.

llvm-svn: 42964
 2007-10-14 10:16:12 +00:00
Neil Booth
f3582ac0e0 If the power of 5 is exact, and the reciprocal exact, the error is zero not one half-ulps. This prevents an infinite loop in rare cases. 
llvm-svn: 42950
 2007-10-13 03:34:08 +00:00
Neil Booth
fb373da5fd Remove duplicate comment. 
llvm-svn: 42913
 2007-10-12 16:05:57 +00:00
Neil Booth
078f455d15 Implement correctly-rounded decimal->binary conversion, i.e. conversion 
from user input strings.

Such conversions are more intricate and subtle than they may appear;
it is unlikely I have got it completely right first time.  I would
appreciate being informed of any bugs and incorrect roundings you
might discover.

llvm-svn: 42912
 2007-10-12 16:02:31 +00:00
Neil Booth
4a0b91bebe Remove a field that was never used. 
llvm-svn: 42911
 2007-10-12 15:35:10 +00:00
Neil Booth
9b83d8be07 If we're trying to be arbitrary precision, unsigned char clearly won't cut it. Needed for dec->bin conversions. 
llvm-svn: 42910
 2007-10-12 15:33:27 +00:00
Neil Booth
39cc673e61 Don't attempt to mask no bits 
llvm-svn: 42909
 2007-10-12 15:31:31 +00:00
Dale Johannesen
0ee2a2fb59 Next PPC long double bits. First cut at constants. 
No compile-time support for constant operations yet,
just format transformations.  Make readers and
writers work.  Split constants into 2 doubles in
Legalize.

llvm-svn: 42865
 2007-10-11 18:07:22 +00:00
Chris Lattner
a65ec649fd Add new MemoryBuffer::getMemBufferCopy method. 
llvm-svn: 42815
 2007-10-09 21:46:38 +00:00
Dan Gohman
2fb0a249d7 Pass argc by value, not by reference, since it isn't modified. 
llvm-svn: 42788
 2007-10-09 16:04:57 +00:00
Chris Lattner
19cb9fa4cc Change a #include into a forward declaration 
llvm-svn: 42781
 2007-10-09 03:40:30 +00:00
Dan Gohman
2e8245a376 Move the space in overview output for commands out of each of the 
commands and into the common code.

llvm-svn: 42752
 2007-10-08 15:45:12 +00:00
Neil Booth
e46d6dbd99 Use APInt::tcExtract. It's cleaner, and works :) 
llvm-svn: 42746
 2007-10-08 14:39:42 +00:00
Neil Booth
f003f9bf1a Add a new function tcExtract for extracting a bignum from an 
arbitrary range of bits embedded in the middle of another bignum.
This kind of operation is desirable in many cases of software
floating point, e.g. converting bignum integers to floating point
numbers of fixed precision (you want to extract the precision most
significant bits).

Elsewhere, add an assertion, and exit the shift functions early if
the shift count is zero.

llvm-svn: 42745
 2007-10-08 13:47:12 +00:00
Neil Booth
6f9602ac12 Add back convertFromSignExtendedInteger. 
llvm-svn: 42735
 2007-10-07 12:15:41 +00:00
Neil Booth
ac998332c3 Now that convertFromUnsignedParts has a sane, constant interface, 
convertFromZeroExtendedInteger can be simplified as it doesn't need
to make a copy of the source bignum.

llvm-svn: 42734
 2007-10-07 12:10:57 +00:00
Neil Booth
db4dbedfea Reimplement convertFromUnsignedInteger so it is passed a const bignum. 
It used to modify its argument in-place.

This interface is saner and the implementation more efficient.  It will
be needed for decimal->binary conversion.

llvm-svn: 42733
 2007-10-07 12:07:53 +00:00
Neil Booth
6e01c5df37 convertFromInteger, as originally written, expected sign-extended 
input.  APInt unfortunately zero-extends signed integers, so Dale
modified the function to expect zero-extended input.  Make this
assumption explicit in the function name.

llvm-svn: 42732
 2007-10-07 11:45:55 +00:00
Neil Booth
726126f4d6 combineLostFractions does not need to be a member function 
llvm-svn: 42729
 2007-10-07 08:51:21 +00:00
Neil Booth
beba899ff0 Cleaner, more general exponent output. 
llvm-svn: 42690
 2007-10-06 07:29:25 +00:00
Chris Lattner
a1de966c80 silence warnings in no-assert build. 
llvm-svn: 42687
 2007-10-06 06:13:42 +00:00
Neil Booth
0613ec4ee6 Fix and clarify some comments. 
llvm-svn: 42670
 2007-10-06 00:43:45 +00:00
Neil Booth
2c4419d71b Generalize tcFullMultiply so that the operands can be of differing 
part widths.  Also, return the number of parts actually required to
hold the result's value.
Remove an over-cautious condition from rounding of float->hex conversion.

llvm-svn: 42669
 2007-10-06 00:24:48 +00:00
Neil Booth
2dc065755d Add APFloat -> hexadecimal string conversion, as per %a and %A in C99. 
Useful for diagnostics and debugging.

llvm-svn: 42598
 2007-10-03 22:26:02 +00:00
Chris Lattner
de233151af Add initial iterator support for folding set. 
llvm-svn: 42589
 2007-10-03 21:12:09 +00:00
Chris Lattner
8955442092 Simplify implementation of the FoldingSet circular list, a necessary step 
to giving it iterators.

llvm-svn: 42586
 2007-10-03 20:45:43 +00:00
Neil Booth
1e709921bc Tweak RoundAwayFromZero the bit number below which is truncated, and make 
it const.

Preparation for APFloat -> hexadecimal string conversion.

llvm-svn: 42576
 2007-10-03 15:16:41 +00:00
Dale Johannesen
4b203b8e44 Simplify and fix signed int -> FP conversions. 
llvm-svn: 42483
 2007-09-30 18:17:01 +00:00