0b1df1d3da
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.
llvm-svn: 44852
2007-12-11 06:53:58 +00:00
e5256754e7
proper #include order.
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llvm-svn: 44707
2007-12-08 19:00:03 +00:00
4b41a6f529
Adding a StringPool data structure, which GC will use.
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llvm-svn: 44705
2007-12-08 17:07:47 +00:00
06f20ea4ba
Prior commit updated wrong if, apologies.
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llvm-svn: 44614
2007-12-05 13:06:04 +00:00
3ab004bca6
Handle zero correctly.
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llvm-svn: 44613
2007-12-05 13:01:24 +00:00
9d43e3d841
Handle 0 correctly in string->APFloat conversion.
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llvm-svn: 44594
2007-12-05 01:10:19 +00:00
893fe3bbd1
Fix PR1816, by correcting the broken definition of APInt::countTrailingZeros.
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llvm-svn: 44296
2007-11-23 22:42:31 +00:00
c2c4c7456c
Fix APInt::countTrailingZeros to return BitWidth if the input is zero instead of returning some random large number.
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llvm-svn: 44294
2007-11-23 22:36:25 +00:00
44158478bb
Fix the Linker testcase regressions, by making MemoryBuffer::getFileOrSTDIN return
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a valid but empty buffer if stdin is empty.
llvm-svn: 44219
2007-11-18 18:52:28 +00:00
06a10df562
Fix denormal check in float->APInt conversion.
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PR 1804.
llvm-svn: 44201
2007-11-17 01:02:27 +00:00
581f006f5d
make smallptrset more const and type correct, which caught a few
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minor bugs.
llvm-svn: 43782
2007-11-06 22:12:43 +00:00
758d0fd736
Remove some unnecessary C-style statics.
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Restore an assertion that arithmetic can be performed on this format.
llvm-svn: 43638
2007-11-02 15:10:05 +00:00
ae077d232c
Add back line whose removal somehow crept into prior patch
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llvm-svn: 43627
2007-11-01 22:51:07 +00:00
618d0fc377
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.
llvm-svn: 43626
2007-11-01 22:43:37 +00:00
fc69d322f2
Clarified operator precedence.
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Silenced VC++ warning.
llvm-svn: 43372
2007-10-25 23:15:31 +00:00
1b88e3c2dd
This requires rtti info because tblgen uses commandline,
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and tblgen requires rtti.
llvm-svn: 43127
2007-10-18 15:57:29 +00:00
9130551996
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.
llvm-svn: 42984
2007-10-15 15:00:55 +00:00
5fe658b21d
Consolidate logic for creating NaNs. Silence compiler warning.
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llvm-svn: 42966
2007-10-14 10:39:51 +00:00
06077e7c3c
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.
llvm-svn: 42965
2007-10-14 10:29:28 +00:00
4ed401b898
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.
llvm-svn: 42964
2007-10-14 10:16:12 +00:00
c799fe9ed9
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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llvm-svn: 42950
2007-10-13 03:34:08 +00:00
d502a82092
Remove duplicate comment.
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llvm-svn: 42913
2007-10-12 16:05:57 +00:00
b93d90e98c
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.
llvm-svn: 42912
2007-10-12 16:02:31 +00:00
e9dbe094aa
Remove a field that was never used.
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llvm-svn: 42911
2007-10-12 15:35:10 +00:00
146fdb3eeb
If we're trying to be arbitrary precision, unsigned char clearly won't cut it. Needed for dec->bin conversions.
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llvm-svn: 42910
2007-10-12 15:33:27 +00:00
7e74b17ad2
Don't attempt to mask no bits
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llvm-svn: 42909
2007-10-12 15:31:31 +00:00
007aa378ad
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.
llvm-svn: 42865
2007-10-11 18:07:22 +00:00
f5ea386698
Add new MemoryBuffer::getMemBufferCopy method.
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llvm-svn: 42815
2007-10-09 21:46:38 +00:00
66966403ce
Pass argc by value, not by reference, since it isn't modified.
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llvm-svn: 42788
2007-10-09 16:04:57 +00:00
5c50f59690
Change a #include into a forward declaration
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llvm-svn: 42781
2007-10-09 03:40:30 +00:00
2c6a821fd7
Move the space in overview output for commands out of each of the
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commands and into the common code.
llvm-svn: 42752
2007-10-08 15:45:12 +00:00
49c6aab7b8
Use APInt::tcExtract. It's cleaner, and works :)
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llvm-svn: 42746
2007-10-08 14:39:42 +00:00
b618216e56
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.
llvm-svn: 42745
2007-10-08 13:47:12 +00:00
03f58ab706
Add back convertFromSignExtendedInteger.
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llvm-svn: 42735
2007-10-07 12:15:41 +00:00
ba205229e7
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.
llvm-svn: 42734
2007-10-07 12:10:57 +00:00
6c1c8588ae
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.
llvm-svn: 42733
2007-10-07 12:07:53 +00:00
5f00973393
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.
llvm-svn: 42732
2007-10-07 11:45:55 +00:00
d3985924f4
combineLostFractions does not need to be a member function
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llvm-svn: 42729
2007-10-07 08:51:21 +00:00
32897f5eb0
Cleaner, more general exponent output.
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llvm-svn: 42690
2007-10-06 07:29:25 +00:00
2a9bcb9ea7
silence warnings in no-assert build.
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llvm-svn: 42687
2007-10-06 06:13:42 +00:00
c8b650ab14
Fix and clarify some comments.
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llvm-svn: 42670
2007-10-06 00:43:45 +00:00
0ea72a9a91
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.
llvm-svn: 42669
2007-10-06 00:24:48 +00:00
8f1946fa22
Add APFloat -> hexadecimal string conversion, as per %a and %A in C99.
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Useful for diagnostics and debugging.
llvm-svn: 42598
2007-10-03 22:26:02 +00:00
99f6ab7e4c
Add initial iterator support for folding set.
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llvm-svn: 42589
2007-10-03 21:12:09 +00:00
8c41ed61d1
Simplify implementation of the FoldingSet circular list, a necessary step
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to giving it iterators.
llvm-svn: 42586
2007-10-03 20:45:43 +00:00
1ca1f80b38
Tweak RoundAwayFromZero the bit number below which is truncated, and make
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it const.
Preparation for APFloat -> hexadecimal string conversion.
llvm-svn: 42576
2007-10-03 15:16:41 +00:00
28a2c4a9c4
Simplify and fix signed int -> FP conversions.
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llvm-svn: 42483
2007-09-30 18:17:01 +00:00
9acbf5aaf9
Whitespace and compiler warning cleanup.
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llvm-svn: 42373
2007-09-26 21:33:42 +00:00
e7439eff5a
Make APFloat->int conversions deterministic even in
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cases with undefined behavior.
llvm-svn: 42328
2007-09-25 23:07:07 +00:00
4f55d9fe0f
Fix long double<->shorter FP type conversions
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of zero, infinity, and NaNs.
llvm-svn: 42298
2007-09-25 17:25:00 +00:00
a8d7269269
Handle storage complications of float->float conversions.
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llvm-svn: 42220
2007-09-22 02:56:19 +00:00
4230512f32
Change APFloat::convertFromInteger to take the incoming
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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.
llvm-svn: 42210
2007-09-21 22:09:37 +00:00
146a0ea071
Fix PR 1688. See comments there.
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llvm-svn: 42181
2007-09-20 23:47:58 +00:00
00064e1bab
Do not hide APInt::dump() inside #ifndef NDEBUG.
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llvm-svn: 42068
2007-09-17 22:24:00 +00:00
6395e5060d
fix a gcc warning: comparison between signed and unsigned integer expressions
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llvm-svn: 41972
2007-09-14 22:57:00 +00:00
98d3a08d8f
Remove the assumption that FP's are either float or
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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).
llvm-svn: 41967
2007-09-14 22:26:36 +00:00
14cf78cde5
And an FoldingSetImpl::NodeID::AddInteger overload for int64_t, to avoid
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ambiguity.
llvm-svn: 41960
2007-09-14 20:48:42 +00:00
58c468fb09
Remove spurious consts. This fixes warnings with compilers that
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are strict about such things.
llvm-svn: 41956
2007-09-14 20:08:19 +00:00
521988b604
Compensate for partCount change in Bogus definition
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(could break hash table in ConstantFP)
llvm-svn: 41874
2007-09-12 01:22:05 +00:00
245dceb06d
Add APInt interfaces to APFloat (allows directly
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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).
llvm-svn: 41858
2007-09-11 18:32:33 +00:00
ee8d9a0e81
Smarter Reset(). Instead of deallocating all memory regions and reallocate the
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first region, just deallocate all but the last region in the list.
llvm-svn: 41782
2007-09-08 00:02:17 +00:00
3dba41bf37
Added Reset() to free all allocated memory regions and reset state to be the same as right after ctor.
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llvm-svn: 41728
2007-09-05 21:41:34 +00:00
728687c423
Fix mod so it actually works. Fix conversions to
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native types to handle denormals correctly.
llvm-svn: 41726
2007-09-05 20:39:49 +00:00
689d17d282
Oops, should be part of 41664; won't work very well without this piece.
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llvm-svn: 41665
2007-08-31 23:35:31 +00:00
3cf889f75e
Enhance APFloat to retain bits of NaNs (fixes oggenc).
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Use APFloat interfaces for more references, mostly
of ConstantFPSDNode.
llvm-svn: 41632
2007-08-31 04:03:46 +00:00
d246b2ca5c
Change LegalFPImmediates to use APFloat.
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Add APFloat interfaces to ConstantFP, SelectionDAG.
Fix integer bit in double->APFloat conversion.
Convert LegalizeDAG to use APFloat interface in
ConstantFPSDNode uses.
llvm-svn: 41587
2007-08-30 00:23:21 +00:00
bdea32d812
Poison APFloat::operator==. Replace existing uses with bitwiseIsEqual.
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This means backing out the preceding change to Constants.cpp, alas.
llvm-svn: 41378
2007-08-24 22:09:56 +00:00
918c33c67a
Revised per review feedback from previous patch.
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llvm-svn: 41353
2007-08-24 05:08:11 +00:00
3da18eb22a
silence some warnings in an optimized build.
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llvm-svn: 41352
2007-08-24 03:02:34 +00:00
a719a60609
Change internal representation of ConstantFP to use APFloat.
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Interface to rest of the compiler unchanged, as yet.
llvm-svn: 41348
2007-08-24 00:56:33 +00:00
b0f158cfdf
rename APInt::toString -> toStringUnsigned for symmetry with toStringSigned()
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Add an APSInt::toString() method.
llvm-svn: 41309
2007-08-23 05:15:32 +00:00
fe02c1f97f
initial checkin of Neil's APFloat work.
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llvm-svn: 41203
2007-08-20 22:49:32 +00:00
6b69568f85
This adds a bunch of static functions that implement unsigned
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two's complement bignum arithmetic. They could be used to
implement much of APInt, but the idea is they are enough to
implement APFloat as well, which the current APInt interface
is not suited for.
Patch by Neil Booth!
llvm-svn: 41124
2007-08-16 15:56:55 +00:00
b61c63ecd0
Properly use const qualifiers
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llvm-svn: 41111
2007-08-15 21:12:30 +00:00
155533cf73
Make getSTDIN return null if the standard input is empty, as the header file
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documentation implies and as its uses depend.
llvm-svn: 40939
2007-08-08 20:01:58 +00:00
f13bcdc4a4
Escape some escapes that confuse doxygen.
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llvm-svn: 40850
2007-08-05 19:33:11 +00:00
44f7d3aa0b
When clearing a SmallPtrSet, if the set had a huge capacity, but the
...
contents of the set were small, deallocate and shrink the set. This
avoids having us to memset as much data, significantly speeding up
some pathological cases. For example, this speeds up the verifier
from 0.3899s to 0.0763 (5.1x) on the testcase from PR1432 in a
release build.
llvm-svn: 40837
2007-08-05 07:32:14 +00:00
49f037ac29
Allow SmallPtrSet to hold pointers to const data.
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llvm-svn: 40556
2007-07-27 18:07:02 +00:00
4c54024319
Make the copy constructor of SmallPtrSet much faster.
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llvm-svn: 40474
2007-07-24 21:31:23 +00:00
ee99010782
Remember to free the heap allocated array if we're not going to use it.
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llvm-svn: 40043
2007-07-19 06:45:33 +00:00
e21f270858
Fix an issue where assignments that caused a SmallPtrSet to become non-small
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would result in calling realloc() on a null pointer. Instead, if we encounter
this situation, make a normal call to malloc().
llvm-svn: 40014
2007-07-18 19:54:15 +00:00
5060fd0fa3
Unbreak the build by putting calls to free into the implementation file and
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having that implementation file #include <cstdlib>.
llvm-svn: 39952
2007-07-17 02:16:12 +00:00
81990a3fc3
Use realloc() to (potentially) resize the contents of SmallPtrSet in place.
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llvm-svn: 39926
2007-07-16 21:27:44 +00:00
ddc2f9ba57
Clarify the language. Pointed out by Duncan Sands.
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llvm-svn: 39857
2007-07-14 17:41:03 +00:00
61b4a265ee
Add alternate ConstantRange intersection algorithm.
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llvm-svn: 39851
2007-07-14 02:51:34 +00:00
e33356b18e
Make the assignment operator for SmallPtrSet much faster for normal cases.
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llvm-svn: 38474
2007-07-09 22:27:20 +00:00
3364abbb36
Make the assignment operator for SmallPtrSet return a reference, and fix a long-standing bug in the copy
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ctor while I'm at it.
Thanks to Chris Lattner for help with this patch.
llvm-svn: 38470
2007-07-09 20:59:01 +00:00
aee901745d
Fix an error in the assignment operator that was causing an infinite loop in GVNPRE.cpp.
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Patch by Chis Lattner.
llvm-svn: 38467
2007-07-09 18:51:15 +00:00
85049a470e
implement operator= for smallptrset
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llvm-svn: 38460
2007-07-09 16:54:03 +00:00
e16561cd5d
Here is the bulk of the sanitizing.
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Almost all occurrences of "bytecode" in the sources have been eliminated.
llvm-svn: 37913
2007-07-05 17:07:56 +00:00
5105adfcd1
Fix undefined behaviour reported by the new --enable-expensive-checks option.
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llvm-svn: 37829
2007-07-01 03:06:30 +00:00
6d7b6f1ab8
Fix a bug in SmallPtrSet that was causing GVNPRE to enter an infinite loop.
...
llvm-svn: 37697
2007-06-22 00:11:18 +00:00
836e8f3f39
Two changes:
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1. Make SmallPtrSet::erase faster in the small case by replacing a memmove
with a pointer copy.
2. Fix a bug where the null terminator at the end of the array in the small
case was not copied
llvm-svn: 37696
2007-06-21 23:23:32 +00:00
d18b16034a
Fix edge case.
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llvm-svn: 37532
2007-06-09 04:20:33 +00:00
82810c8a13
Make tail merging the default, except on powerPC. There was no prior art
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for a target-dependent default with a command-line override; this way
should be generally usable.
llvm-svn: 37285
2007-05-22 17:14:46 +00:00
b6af1aae35
Fix an assertion introduced by my last change to the toString method. We
...
can't use getZExtValue() to extract the low order bits for each digit.
Instead, we need to access the low order word directly.
llvm-svn: 37242
2007-05-19 00:29:55 +00:00
5c138133b7
Get rid of leading zeros in the output of toString.
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llvm-svn: 37175
2007-05-17 19:23:02 +00:00
fffdf10566
For lshr by 0 bits, just return *this as a short cut. This also prevents
...
undefined behavior when the width > 64 bits.
llvm-svn: 37153
2007-05-17 06:26:29 +00:00
a93c981f66
Fix a bug in the "fromString" method where radix 2,8 and 16 values were
...
not being generated correctly because the shl operator does not mutate its
object but returns a new value. Also, make the distinction between radix
16 and the others more clear.
llvm-svn: 37111
2007-05-16 19:18:22 +00:00
98ed7db7ab
Make the results for the rotate functions correct when rotateAmt == 0.
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llvm-svn: 37026
2007-05-14 00:15:28 +00:00
Reid Spencer