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96c7471b39
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675 Commits

Author SHA1 Message Date
Neil Booth
96c7471b39 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42912 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-12 16:02:31 +00:00
Neil Booth
5b8e0c5fd3 Remove a field that was never used. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42911 91177308-0d34-0410-b5e6-96231b3b80d8
 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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42910 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-12 15:33:27 +00:00
Neil Booth
1e8390d8d6 Don't attempt to mask no bits 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42909 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-12 15:31:31 +00:00
Dale Johannesen
a471c2ecda 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42865 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-11 18:07:22 +00:00
Chris Lattner
3daae2701b Add new MemoryBuffer::getMemBufferCopy method. 
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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42788 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-09 16:04:57 +00:00
Chris Lattner
be2c4596cb Change a #include into a forward declaration 
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 
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 :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42746 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-08 14:39:42 +00:00
Neil Booth
68e53ad6cb 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42745 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-08 13:47:12 +00:00
Neil Booth
f16c595252 Add back convertFromSignExtendedInteger. 
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, 
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. 
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 
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 
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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42690 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-06 07:29:25 +00:00
Chris Lattner
a11ef82207 silence warnings in no-assert build. 
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. 
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 
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. 
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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42589 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-03 21:12:09 +00:00
Chris Lattner
9a7288b0c6 Simplify implementation of the FoldingSet circular list, a necessary step 
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 
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. 
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
Neil Booth
4f88170be0 Whitespace and compiler warning cleanup. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42373 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-26 21:33:42 +00:00
Dale Johannesen
0edc47ad7b Make APFloat->int conversions deterministic even in 
cases with undefined behavior.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42328 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-25 23:07:07 +00:00
Dale Johannesen
902ff94aff Fix long double<->shorter FP type conversions 
of zero, infinity, and NaNs.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42298 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-25 17:25:00 +00:00
Neil Booth
c8db43ddaf Handle storage complications of float->float conversions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42220 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-22 02:56:19 +00:00
Dale Johannesen
910993e8dc Change APFloat::convertFromInteger to take the incoming 
bit width instead of number of words allocated, which
makes it actually work for int->APF conversions.
Adjust callers.  Add const to one of the APInt constructors
to prevent surprising match when called with const
argument.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42210 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-21 22:09:37 +00:00
Dale Johannesen
a72a5a095d Fix PR 1688. See comments there. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42181 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-20 23:47:58 +00:00
Devang Patel
8feb1f4467 Do not hide APInt::dump() inside #ifndef NDEBUG. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42068 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-17 22:24:00 +00:00
Chris Lattner
2204906892 fix a gcc warning: comparison between signed and unsigned integer expressions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41972 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-14 22:57:00 +00:00
Dale Johannesen
9e3d3abd93 Remove the assumption that FP's are either float or 
double from some of the many places in the optimizers
it appears, and do something reasonable with x86
long double.
Make APInt::dump() public, remove newline, use it to
dump ConstantSDNode's.
Allow APFloats in FoldingSet.
Expand X86 backend handling of long doubles (conversions
to/from int, mostly).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41967 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-14 22:26:36 +00:00
Dan Gohman
f82e1e66ce And an FoldingSetImpl::NodeID::AddInteger overload for int64_t, to avoid 
ambiguity.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41960 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-14 20:48:42 +00:00
Dan Gohman
cb648f90a2 Remove spurious consts. This fixes warnings with compilers that 
are strict about such things.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41956 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-14 20:08:19 +00:00
Dale Johannesen
257500db04 Compensate for partCount change in Bogus definition 
(could break hash table in ConstantFP)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41874 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-12 01:22:05 +00:00
Dale Johannesen
3f6eb7419d Add APInt interfaces to APFloat (allows directly 
access to bits).  Use them in place of float and
double interfaces where appropriate.
First bits of x86 long double constants handling 
(untested, probably does not work).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41858 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-11 18:32:33 +00:00
Evan Cheng
7dfda9e674 Smarter Reset(). Instead of deallocating all memory regions and reallocate the 
first region, just deallocate all but the last region in the list.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41782 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-08 00:02:17 +00:00
Evan Cheng
188b5224fd Added Reset() to free all allocated memory regions and reset state to be the same as right after ctor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41728 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-05 21:41:34 +00:00
Dale Johannesen
58c2e4c5fd Fix mod so it actually works. Fix conversions to 
native types to handle denormals correctly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41726 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-05 20:39:49 +00:00
Dale Johannesen
e15c2db993 Oops, should be part of 41664; won't work very well without this piece. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41665 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-31 23:35:31 +00:00
Dale Johannesen
eaf089430e Enhance APFloat to retain bits of NaNs (fixes oggenc). 
Use APFloat interfaces for more references, mostly
of ConstantFPSDNode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41632 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-31 04:03:46 +00:00
Dale Johannesen
f04afdbb48 Change LegalFPImmediates to use APFloat. 
Add APFloat interfaces to ConstantFP, SelectionDAG.
Fix integer bit in double->APFloat conversion.
Convert LegalizeDAG to use APFloat interface in
ConstantFPSDNode uses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41587 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-30 00:23:21 +00:00
Dale Johannesen
12595d7b16 Poison APFloat::operator==. Replace existing uses with bitwiseIsEqual. 
This means backing out the preceding change to Constants.cpp, alas.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41378 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-24 22:09:56 +00:00
Dale Johannesen
d3b51fd170 Revised per review feedback from previous patch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41353 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-24 05:08:11 +00:00
Chris Lattner
ada530b4f5 silence some warnings in an optimized build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41352 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-24 03:02:34 +00:00
Dale Johannesen
343e770983 Change internal representation of ConstantFP to use APFloat. 
Interface to rest of the compiler unchanged, as yet.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41348 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-24 00:56:33 +00:00
Chris Lattner
9132a2b818 rename APInt::toString -> toStringUnsigned for symmetry with toStringSigned() 
Add an APSInt::toString() method.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41309 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-23 05:15:32 +00:00
Chris Lattner
b39cdde41d initial checkin of Neil's APFloat work. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41203 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-20 22:49:32 +00:00