Chris Lattner
4ee451de36
Remove attribution from file headers, per discussion on llvmdev.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 20:36:04 +00:00
Chris Lattner
fc643c5e88
remove attribution from lib Makefiles.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45415 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 20:09:26 +00:00
Anton Korobeynikov
97d37260df
Cygwin defines uint32_t as unsigned long. Unbreak call to std::min in this case
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45342 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-24 11:16:47 +00:00
Reid Spencer
9af1887537
Don't have APInt.cpp depend upon DerivedTypes.h. This helps with splitting the
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Support libraries separately into their own module.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44852 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-11 06:53:58 +00:00
Chris Lattner
36d26c201f
proper #include order.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44707 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 19:00:03 +00:00
Gordon Henriksen
985cb62234
Adding a StringPool data structure, which GC will use.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44705 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 17:07:47 +00:00
Neil Booth
cc2335968f
Prior commit updated wrong if, apologies.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44614 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-05 13:06:04 +00:00
Neil Booth
a89e45f754
Handle zero correctly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44613 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-05 13:01:24 +00:00
Dale Johannesen
db1e30272c
Handle 0 correctly in string->APFloat conversion.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44594 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-05 01:10:19 +00:00
Chris Lattner
9e513acd31
Fix PR1816, by correcting the broken definition of APInt::countTrailingZeros.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44296 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-23 22:42:31 +00:00
Chris Lattner
5e557123ad
Fix APInt::countTrailingZeros to return BitWidth if the input is zero instead of returning some random large number.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44294 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-23 22:36:25 +00:00
Chris Lattner
2b1f1066ac
Fix the Linker testcase regressions, by making MemoryBuffer::getFileOrSTDIN return
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a valid but empty buffer if stdin is empty.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44219 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-18 18:52:28 +00:00
Dale Johannesen
d0763b9159
Fix denormal check in float->APInt conversion.
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PR 1804.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44201 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-17 01:02:27 +00:00
Chris Lattner
373a733be0
make smallptrset more const and type correct, which caught a few
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minor bugs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43782 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-06 22:12:43 +00:00
Neil Booth
e3d936ac9c
Remove some unnecessary C-style statics.
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Restore an assertion that arithmetic can be performed on this format.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43638 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-02 15:10:05 +00:00
Neil Booth
43a4b28e94
Add back line whose removal somehow crept into prior patch
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43627 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-01 22:51:07 +00:00
Neil Booth
ee7ae384f5
When converting to integer, do bit manipulations in the destination
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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.
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2007-11-01 22:43:37 +00:00
Hartmut Kaiser
8df77a9e0f
Clarified operator precedence.
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Silenced VC++ warning.
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2007-10-25 23:15:31 +00:00
Chris Lattner
8dc2e288ac
This requires rtti info because tblgen uses commandline,
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and tblgen requires rtti.
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2007-10-18 15:57:29 +00:00
Neil Booth
686700e325
Fast-track obviously over-large and over-small exponents during decimal->
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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.
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2007-10-15 15:00:55 +00:00
Neil Booth
e5e0194583
Consolidate logic for creating NaNs. Silence compiler warning.
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2007-10-14 10:39:51 +00:00
Neil Booth
caf19d79e5
Whether arithmetic is supported is a property of the semantics. Make it
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so, and clean up the checks by putting them in an inline function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42965 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-14 10:29:28 +00:00
Neil Booth
1870f29c6c
Separate out parsing of decimal number. Use this to only allocate
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memory for the significand once up-front. Also ignore insignificant
trailing zeroes; this saves unnecessary multiplications later.
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2007-10-14 10:16:12 +00:00
Neil Booth
d1a23d573d
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.
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2007-10-13 03:34:08 +00:00
Neil Booth
6ac7016eb1
Remove duplicate comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42913 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-12 16:05:57 +00:00
Neil Booth
96c7471b39
Implement correctly-rounded decimal->binary conversion, i.e. conversion
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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.
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2007-10-12 16:02:31 +00:00
Neil Booth
5b8e0c5fd3
Remove a field that was never used.
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2007-10-12 15:35:10 +00:00
Neil Booth
7a951ca548
If we're trying to be arbitrary precision, unsigned char clearly won't cut it. Needed for dec->bin conversions.
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2007-10-12 15:33:27 +00:00
Neil Booth
1e8390d8d6
Don't attempt to mask no bits
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2007-10-12 15:31:31 +00:00
Dale Johannesen
a471c2ecda
Next PPC long double bits. First cut at constants.
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No compile-time support for constant operations yet,
just format transformations. Make readers and
writers work. Split constants into 2 doubles in
Legalize.
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2007-10-11 18:07:22 +00:00
Chris Lattner
3daae2701b
Add new MemoryBuffer::getMemBufferCopy method.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42815 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-09 21:46:38 +00:00
Dan Gohman
9a5263241d
Pass argc by value, not by reference, since it isn't modified.
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2007-10-09 16:04:57 +00:00
Chris Lattner
be2c4596cb
Change a #include into a forward declaration
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42781 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-09 03:40:30 +00:00
Dan Gohman
82a13c9c48
Move the space in overview output for commands out of each of the
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commands and into the common code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42752 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-08 15:45:12 +00:00
Neil Booth
5477f8593d
Use APInt::tcExtract. It's cleaner, and works :)
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2007-10-08 14:39:42 +00:00
Neil Booth
68e53ad6cb
Add a new function tcExtract for extracting a bignum from an
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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.
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2007-10-08 13:47:12 +00:00
Neil Booth
f16c595252
Add back convertFromSignExtendedInteger.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42735 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-07 12:15:41 +00:00
Neil Booth
7a7bc0f724
Now that convertFromUnsignedParts has a sane, constant interface,
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convertFromZeroExtendedInteger can be simplified as it doesn't need
to make a copy of the source bignum.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42734 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-07 12:10:57 +00:00
Neil Booth
643ce59495
Reimplement convertFromUnsignedInteger so it is passed a const bignum.
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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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42733 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-07 12:07:53 +00:00
Neil Booth
ccf596a53e
convertFromInteger, as originally written, expected sign-extended
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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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42732 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-07 11:45:55 +00:00
Neil Booth
33d4c92e78
combineLostFractions does not need to be a member function
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42729 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-07 08:51:21 +00:00
Neil Booth
92f7e8d925
Cleaner, more general exponent output.
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2007-10-06 07:29:25 +00:00
Chris Lattner
a11ef82207
silence warnings in no-assert build.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42687 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-06 06:13:42 +00:00
Neil Booth
055c0b3a8f
Fix and clarify some comments.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42670 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-06 00:43:45 +00:00
Neil Booth
978661d053
Generalize tcFullMultiply so that the operands can be of differing
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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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42669 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-06 00:24:48 +00:00
Neil Booth
a30b0ee959
Add APFloat -> hexadecimal string conversion, as per %a and %A in C99.
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Useful for diagnostics and debugging.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42598 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-03 22:26:02 +00:00
Chris Lattner
116c3219df
Add initial iterator support for folding set.
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2007-10-03 21:12:09 +00:00
Chris Lattner
9a7288b0c6
Simplify implementation of the FoldingSet circular list, a necessary step
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to giving it iterators.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42586 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-03 20:45:43 +00:00
Neil Booth
b7dea4cb36
Tweak RoundAwayFromZero the bit number below which is truncated, and make
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it const.
Preparation for APFloat -> hexadecimal string conversion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42576 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-03 15:16:41 +00:00
Dale Johannesen
cce23a4c35
Simplify and fix signed int -> FP conversions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42483 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-30 18:17:01 +00:00