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201 Commits

Author SHA1 Message Date
Benjamin Kramer
f7427d954c APInt: Simplify code. No functionality change. 
llvm-svn: 183073
 2013-06-01 11:26:39 +00:00
Michael Gottesman
2a51955f08 [APInt] Implement tcDecrement as a counterpart to tcIncrement. This is for use in APFloat IEEE-754R 2008 nextUp/nextDown function. 
rdar://13852078

llvm-svn: 182801
 2013-05-28 19:50:20 +00:00
Michael J. Spencer
c195b8a813 Replace Count{Leading,Trailing}Zeros_{32,64} with count{Leading,Trailing}Zeros. 
llvm-svn: 182680
 2013-05-24 22:23:49 +00:00
Jakub Staszak
9d539599f4 Use pre-inc, pre-dec when possible. 
They are generally faster (at least not slower) than post-inc, post-dec.

llvm-svn: 177608
 2013-03-20 23:56:19 +00:00
Jakub Staszak
c4692feb81 Move part of APInt implementation from header to cpp file. These methods 
require call cpp file anyway, so we wouldn't gain anything by keeping them
inline.

llvm-svn: 175579
 2013-02-20 00:17:42 +00:00
Chandler Carruth
a490793037 Use the new script to sort the includes of every file under lib. 
Sooooo many of these had incorrect or strange main module includes.
I have manually inspected all of these, and fixed the main module
include to be the nearest plausible thing I could find. If you own or
care about any of these source files, I encourage you to take some time
and check that these edits were sensible. I can't have broken anything
(I strictly added headers, and reordered them, never removed), but they
may not be the headers you'd really like to identify as containing the
API being implemented.

Many forward declarations and missing includes were added to a header
files to allow them to parse cleanly when included first. The main
module rule does in fact have its merits. =]

llvm-svn: 169131
 2012-12-03 16:50:05 +00:00
Sylvestre Ledru
b77340e506 Revert 'Fix a typo 'iff' => 'if''. iff is an abreviation of if and only if. See: http://en.wikipedia.org/wiki/If_and_only_if Commit 164767 
llvm-svn: 164768
 2012-09-27 10:14:43 +00:00
Sylvestre Ledru
1c5e7904de Fix a typo 'iff' => 'if' 
llvm-svn: 164767
 2012-09-27 09:59:43 +00:00
Benjamin Kramer
e4bd0cdfa8 PR13326: Fix a subtle edge case in the udiv -> magic multiply generator. 
This caused 6 of 65k possible 8 bit udivs to be wrong.

llvm-svn: 160058
 2012-07-11 18:31:59 +00:00
Chad Rosier
42c1d8b369 Fix a crash in APInt::lshr when shiftAmt > BitWidth. 
Patch by James Benton <jbenton@vmware.com>.

llvm-svn: 158213
 2012-06-08 18:04:52 +00:00
Benjamin Kramer
3bb5766d6e Move APInt::operator[] inline. 
llvm-svn: 152692
 2012-03-14 00:38:15 +00:00
Benjamin Kramer
8a2603ad7e Move APInt::operator! inline, it's small and fuses well with surrounding code when inlined. 
llvm-svn: 152688
 2012-03-14 00:01:35 +00:00
Benjamin Kramer
a3a97e8220 Inline a trivial helper function. 
llvm-svn: 152577
 2012-03-12 21:18:53 +00:00
Benjamin Kramer
6c8c4afc05 Replace a hand-coded leading one counting loop with the magic from MathExtras.h. 
llvm-svn: 152545
 2012-03-11 19:32:35 +00:00
Chandler Carruth
a93fbd8fff Replace the hashing functions on APInt and APFloat with overloads of the 
new hash_value infrastructure, and replace their implementations using
hash_combine. This removes a complete copy of Jenkin's lookup3 hash
function (which is both significantly slower and lower quality than the
one implemented in hash_combine) along with a somewhat scary xor-only
hash function.

Now that APInt and APFloat can be passed directly to hash_combine,
simplify the rest of the LLVMContextImpl hashing to use the new
infrastructure.

llvm-svn: 152004
 2012-03-04 12:02:57 +00:00
Ahmed Charles
1f34683467 Fix undefined behavior. 
llvm-svn: 151385
 2012-02-24 19:06:15 +00:00
Rafael Espindola
7bddde2b49 Add r149110 back with a fix for when the vector and the int have the same 
width.

llvm-svn: 149151
 2012-01-27 23:33:07 +00:00
Eli Friedman
7e1bd9d328 Fix APInt::rotl and APInt::rotr so that they work correctly. Found while writing some code that tried to use them. 
llvm-svn: 147134
 2011-12-22 03:15:35 +00:00
Dylan Noblesmith
91b9af8f44 APInt: update asserts for base-36 
Hexatridecimal was added in r139695.

And fix the unittest that now triggers the assert.

llvm-svn: 146754
 2011-12-16 20:36:31 +00:00
David Blaikie
a787220c76 Fix unreachable return & simplify some branches. 
llvm-svn: 145627
 2011-12-01 20:58:30 +00:00
Richard Smith
d647537b9c Correctly byte-swap APInts with bit-widths greater than 64. 
llvm-svn: 145111
 2011-11-23 21:33:37 +00:00
Eli Friedman
433785c651 Fix APInt::operator*= so that it computes the correct result for large integers where there is unsigned overflow. Fix APFloat::toString so that it doesn't depend on the incorrect behavior in common cases (and computes the correct result in some rare cases). Fixes PR11086. 
llvm-svn: 141441
 2011-10-07 23:40:49 +00:00
Douglas Gregor
0b34adbbaf U is good enough 
llvm-svn: 140166
 2011-09-20 18:33:29 +00:00
Douglas Gregor
669f1d1953 Eliminate sign-comparison warnings in APInt 
llvm-svn: 140158
 2011-09-20 18:11:52 +00:00
Benjamin Kramer
f2e726fe00 Silence -Wsign-compare warnings from GCC. 
llvm-svn: 140043
 2011-09-19 20:08:54 +00:00
Douglas Gregor
8c0777c5f3 Add APInt support for converting to/from hexatridecimal strings 
llvm-svn: 139695
 2011-09-14 15:54:46 +00:00
Jeffrey Yasskin
2e0f2a0985 Add APInt(numBits, ArrayRef<uint64_t> bigVal) constructor to prevent future ambiguity 
errors like the one corrected by r135261.  Migrate all LLVM callers of the old
constructor to the new one.

llvm-svn: 135431
 2011-07-18 21:45:40 +00:00
Ted Kremenek
947d9a7e53 add option for literal formatting to APInt::toString() 
toString() now takes an optional bool argument that,
depending on the radix, adds the appropriate prefix
to the integer's string representation that makes it into a
meaningful C literal, e.g.:

hexademical: '-f' becomes '-0xf'
octal: '77' becomes '077'
binary: '110' becomes '0b110'

Patch by nobled@dreamwidth.org!

llvm-svn: 133032
 2011-06-15 00:51:55 +00:00
Chris Lattner
75adf06d44 fix a bug for hosts without round, PR8893. 
llvm-svn: 131842
 2011-05-22 06:03:53 +00:00
Chris Lattner
0304b82f80 Fix a ton of comment typos found by codespell. Patch by 
Luis Felipe Strano Moraes!

llvm-svn: 129558
 2011-04-15 05:18:47 +00:00
Frits van Bommel
c234349939 Constant folding support for calls to umul.with.overflow(), basically identical to the smul.with.overflow() code. 
llvm-svn: 128379
 2011-03-27 14:26:13 +00:00
Benjamin Kramer
a85996c235 Add an argument to APInt's magic udiv calculation to specify the number of bits that are known zero in the divided number. 
This will come in handy soon.

llvm-svn: 127828
 2011-03-17 20:39:06 +00:00
Cameron Zwarich
b7e676db6c The signed version of our "magic number" computation for the integer approximation 
of a constant had a minor typo introduced when copying it from the book, which
caused it to favor negative approximations over positive approximations in many
cases. Positive approximations require fewer operations beyond the multiplication.

In the case of division by 3, we still generate code that is a single instruction
larger than GCC's code.

llvm-svn: 126097
 2011-02-21 00:22:02 +00:00
Jay Foad
79e18ed269 PR5207: Change APInt methods trunc(), sext(), zext(), sextOrTrunc() and 
zextOrTrunc(), and APSInt methods extend(), extOrTrunc() and new method
trunc(), to be const and to return a new value instead of modifying the
object in place.

llvm-svn: 121120
 2010-12-07 08:25:19 +00:00
Benjamin Kramer
e2e8053264 APInt: microoptimize a few methods. 
llvm-svn: 120912
 2010-12-04 18:05:36 +00:00
Jay Foad
789e8ac4f7 PR5207: Rename overloaded APInt methods set(), clear(), flip() to 
setAllBits(), setBit(unsigned), etc.

llvm-svn: 120564
 2010-12-01 08:53:58 +00:00
Jay Foad
c663d7e4f6 PR5207: Make APInt::set(), APInt::clear() and APInt::flip() return void. 
llvm-svn: 120413
 2010-11-30 09:02:01 +00:00
Dan Gohman
3f08bf5bea Bounds-check APInt's operator[]. 
llvm-svn: 119708
 2010-11-18 17:14:56 +00:00
Chris Lattner
27d8b68afa fix a bug I introduced, no idea how this didn't repro right. 
llvm-svn: 116462
 2010-10-14 00:30:00 +00:00
Chris Lattner
451a0accb5 add uadd_ov/usub_ov to apint, consolidate constant folding 
logic to use the new APInt methods.  Among other things this
implements rdar://8501501 - llvm.smul.with.overflow.i32 should constant fold

which comes from "clang -ftrapv", originally brought to my attention from PR8221.

llvm-svn: 116457
 2010-10-14 00:05:07 +00:00
Chris Lattner
093d5fe0a9 constify these methods. 
llvm-svn: 116455
 2010-10-13 23:54:10 +00:00
Chris Lattner
70a78ab2c5 add a few operations for signed operations that also 
return an overflow flag.

llvm-svn: 116452
 2010-10-13 23:46:33 +00:00
Chris Lattner
ba9f26fade stomp some more undefined behavior, PR7775. 
llvm-svn: 111337
 2010-08-18 00:33:47 +00:00
Benjamin Kramer
da3e6cdb26 Don't pass StringRef by reference. 
llvm-svn: 108366
 2010-07-14 22:38:02 +00:00
Chris Lattner
a1f4042939 improve portability to systems that don't have round, patch by 
Evzen Muller!

llvm-svn: 103877
 2010-05-15 17:11:55 +00:00
Chris Lattner
ebe18a8f38 improve portability to minix, patch by 
Kees van Reeuwijk for PR6704

llvm-svn: 99677
 2010-03-26 23:54:15 +00:00
Dan Gohman
177e2ae058 Fix minor style issues. 
llvm-svn: 99414
 2010-03-24 19:38:02 +00:00
John McCall
69bc985550 Teach APFloat how to create both QNaNs and SNaNs and with arbitrary-width 
payloads.  APFloat's internal folding routines always make QNaNs now,
instead of sometimes making QNaNs and sometimes SNaNs depending on the
type.

llvm-svn: 97364
 2010-02-28 02:51:25 +00:00
Dan Gohman
92b6122204 Fix "the the" and similar typos. 
llvm-svn: 95781
 2010-02-10 16:03:48 +00:00
John McCall
8bcabdeffc Make APInt::countLeadingZerosSlowCase() treat the contents of padding bits 
as undefined.  Fixes an assertion in APFloat::toString noticed by Dale.

llvm-svn: 95196
 2010-02-03 03:42:44 +00:00