Commit Graph

127 Commits

Author SHA1 Message Date
Dan Gohman
de551f91d8 Use CHAR_BIT instead of hard-coding 8 in several places where it
is appropriate. This helps visually differentiate host-oriented
calculations from target-oriented calculations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68227 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-01 18:45:54 +00:00
Duncan Sands
bf5836b075 Fix comment typo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67302 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-19 11:37:15 +00:00
Stuart Hastings
d52ec65b6d Fix a hashing bug in APInt. A certain pathological testcase (too
large for the testsuite) took over six minutes to compile on my Mac.
The patched LLVM-GCC compiles that testcase in three seconds (GCC
takes less than one second).  This hash function is more complex
(about 35 instructions on x86) than what Chris wanted, but I expect it
will be well-behaved with arbitrary inputs.

Thank you to everyone who responded to my previous request for advice.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66962 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-13 21:51:13 +00:00
Torok Edwin
2d0f1c57c3 APInt's countLeadingOnes() was broken for negative i128 values,
causing assertion failures in getSExtValue().
Fix it by making highWordBits actually contain what its name says,
and add some more unit-tests for APInt.
This fixes PR3419.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63107 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-27 18:06:03 +00:00
Chris Lattner
455e9abf36 Remove uses of uint32_t in favor of 'unsigned' for better
compatibility with cygwin.  Patch by Jay Foad!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62695 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-21 18:09:24 +00:00
Nick Lewycky
4bd4787785 Fix typo, sentence fragment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62512 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-19 17:42:33 +00:00
Chris Lattner
119c30b955 rearrange some code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57384 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-11 22:07:19 +00:00
Chris Lattner
944fac71e0 Switch the asmprinter (.ll) and all the stuff it requires over to
use raw_ostream instead of std::ostream.  Among other goodness,
this speeds up llvm-dis of kc++ with a release build from 0.85s
to 0.49s (88% faster).

Other interesting changes:
 1) This makes Value::print be non-virtual.
 2) AP[S]Int and ConstantRange can no longer print to ostream directly, 
    use raw_ostream instead.
 3) This fixes a bug in raw_os_ostream where it didn't flush itself 
    when destroyed.
 4) This adds a new SDNode::print method, instead of only allowing "dump".


A lot of APIs have both std::ostream and raw_ostream versions, it would
be useful to go through and systematically anihilate the std::ostream 
versions.

This passes dejagnu, but there may be minor fallout, plz let me know if
so and I'll fix it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55263 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-23 22:23:09 +00:00
Chris Lattner
98f8ccfad0 Move the fast-path (<=i64) cases of various APInt methods inline
and the slow-path cases out of line.  This speeds up instcombine
a bit in real world cases.  Patch contributed by m-s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55063 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-20 17:02:31 +00:00
Dan Gohman
eace52f12d It's not necessary to check if a value is null before delete[].
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55053 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-20 14:55:37 +00:00
Chris Lattner
fad86b003a Rework the routines that convert AP[S]Int into a string. Now, instead of
returning an std::string by value, it fills in a SmallString/SmallVector
passed in.  This significantly reduces string thrashing in some cases.

More specifically, this:
 - Adds an operator<< and a print method for APInt that allows you to 
   directly send them to an ostream.
 - Reimplements APInt::toString to be much simpler and more efficient
   algorithmically in addition to not thrashing strings quite as much.

This speeds up llvm-dis on kc++ by 7%, and may also slightly speed up the
asmprinter.  This also fixes a bug I introduced into the asmwriter in a
previous patch w.r.t. alias printing.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54873 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-17 07:19:36 +00:00
Chris Lattner
9f17eb0b79 remove a dead APInt ctor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54869 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-17 04:58:58 +00:00
Wojciech Matyjewicz
de0f2382e4 Fix PR2088. Use modulo linear equation solver to compute loop iteration
count.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53810 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-20 15:55:14 +00:00
Wojciech Matyjewicz
300c6c5167 First step to fix PR2088. Implement routine to compute the
multiplicative inverse of a given number. Modify udivrem to allow input and 
output pairs of arguments to overlap. Patch is based on the work by Chandler
Carruth.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52638 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-23 19:39:50 +00:00
Dan Gohman
95df6b3603 Avoid creating a redundant zero APInt.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52602 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-21 22:03:12 +00:00
Zhou Sheng
bfde7d6b9e As comments said, for negative value, the arithmetic
over-shift-right should return -1. So here it should be signed-extended,
when bitwidth larger than 64.

test case: llvm/test/ExecutionEngine/2008-06-05-APInt-OverAShr.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51999 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-05 13:27:38 +00:00
Evan Cheng
48e8c80e17 Suppress -Wshorten-64-to-32 warnings for 64-bit hosts.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50590 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-02 21:15:08 +00:00
Dan Gohman
3bd659ba20 Make several symbols static.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49496 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-10 21:11:47 +00:00
Dan Gohman
cfbb2f074d A quick nm audit turned up several fixed tables and objects that were
marked read-write. Use const so that they can be allocated in a
read-only segment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48800 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-25 21:45:14 +00:00
Bill Wendling
f7a91e68a8 Add assert for non-hexadecimal radixes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48421 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-16 20:05:52 +00:00
Evan Cheng
a8de38f351 Fix a typo. It's causing consumer-typeset to miscompile. Perhaps more.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48035 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-07 22:39:49 +00:00
Dan Gohman
cf609575ef Add support to APInt for shift and rotate operations with APInt
instead of uint32_t for the shift/rotate count operand type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47741 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-29 01:40:47 +00:00
Ted Kremenek
a795aca96a Fixed bug in APInt::Profile() where the BitWidth field was not included in the
profile of the APSInt object. This caused unexpected Profile collisions where
none should have occurred.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47338 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 20:50:41 +00:00
Dan Gohman
5a0e7b41c1 Fix a warning about comparison between signed and unsigned,
being consistent with the rest of the APInt implementation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47138 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-14 22:38:45 +00:00
Dan Gohman
42dd77f207 Add countTrailingOnes member functions to APInt.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47086 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 21:11:05 +00:00
Ted Kremenek
e420debd26 Added FoldingSet style 'profiling' support for APInt.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46188 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-19 04:23:33 +00:00
Chris Lattner
4ee451de36 Remove attribution from file headers, per discussion on llvmdev.
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
Anton Korobeynikov
97d37260df Cygwin defines uint32_t as unsigned long. Unbreak call to std::min in this case
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
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
9e513acd31 Fix PR1816, by correcting the broken definition of APInt::countTrailingZeros.
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.
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
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
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
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
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
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
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
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
Chris Lattner
fe8e14a6c9 This adds a bunch of static functions that implement unsigned
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!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41124 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-16 15:56:55 +00:00
Reid Spencer
20a4c23bcc 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37242 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-19 00:29:55 +00:00
Reid Spencer
fb0709a180 Get rid of leading zeros in the output of toString.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37175 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-17 19:23:02 +00:00
Reid Spencer
02ae8b78ff For lshr by 0 bits, just return *this as a short cut. This also prevents
undefined behavior when the width > 64 bits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37153 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-17 06:26:29 +00:00
Reid Spencer
6551dcdd8a 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37111 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-16 19:18:22 +00:00
Reid Spencer
69944e85aa Make the results for the rotate functions correct when rotateAmt == 0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37026 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-14 00:15:28 +00:00
Reid Spencer
19dc32a2d4 Add some things needed by the llvm-gcc version supporting bit accurate integer
types:
1. Functions to compute div/rem at the same time.
2. Further assurance that an APInt with 0 bitwidth cannot be constructed.
3. Left and right rotate operations.
4. An exactLogBase2 function which requires an exact power of two or it
   returns -1.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37025 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-13 23:44:59 +00:00
Reid Spencer
92c7283500 Fix shl to produce the correct result when the bitwidth is > 64 and the
shift amount is 0. Previously this code would do a lshr by the bit width
which can lead to incorrect results.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37010 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-12 18:01:57 +00:00
Chris Lattner
a5ae15ecb7 silence some annoying gcc 4.3 warnings
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36680 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-03 18:15:36 +00:00
Reid Spencer
0468ab3025 We want the number of bits needed, not the power of 2.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35977 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-14 00:00:10 +00:00