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195 Commits

Author SHA1 Message Date
Sylvestre Ledru 94c22716d6 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 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164768 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-27 10:14:43 +00:00
Sylvestre Ledru 7e2c793a2b Fix a typo 'iff' => 'if' 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164767 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-27 09:59:43 +00:00
Benjamin Kramer 597f2950d8 PR13326: Fix a subtle edge case in the udiv -> magic multiply generator. 
This caused 6 of 65k possible 8 bit udivs to be wrong.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160058 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-11 18:31:59 +00:00
Chad Rosier 28dd960cd1 Fix a crash in APInt::lshr when shiftAmt > BitWidth. 
Patch by James Benton <jbenton@vmware.com>.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158213 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-06-08 18:04:52 +00:00
Benjamin Kramer 69ccf9fc0b Move APInt::operator[] inline. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152692 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-14 00:38:15 +00:00
Benjamin Kramer a189885188 Move APInt::operator! inline, it's small and fuses well with surrounding code when inlined. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152688 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-14 00:01:35 +00:00
Benjamin Kramer a185362095 Inline a trivial helper function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152577 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-12 21:18:53 +00:00
Benjamin Kramer 38d2ff4ac0 Replace a hand-coded leading one counting loop with the magic from MathExtras.h. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152545 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-11 19:32:35 +00:00
Chandler Carruth ed7692a136 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152004 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-04 12:02:57 +00:00
Ahmed Charles 969b739fb9 Fix undefined behavior. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151385 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-24 19:06:15 +00:00
Rafael Espindola 04594aeffa Add r149110 back with a fix for when the vector and the int have the same 
width.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149151 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-27 23:33:07 +00:00
Eli Friedman 2acbd7ddc0 Fix APInt::rotl and APInt::rotr so that they work correctly. Found while writing some code that tried to use them. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147134 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-22 03:15:35 +00:00
Dylan Noblesmith efb0d1e42f APInt: update asserts for base-36 
Hexatridecimal was added in r139695.

And fix the unittest that now triggers the assert.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146754 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-16 20:36:31 +00:00
David Blaikie 18c7ec1344 Fix unreachable return & simplify some branches. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145627 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-01 20:58:30 +00:00
Richard Smith e73db4e2a7 Correctly byte-swap APInts with bit-widths greater than 64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145111 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-23 21:33:37 +00:00
Eli Friedman 9eb6b4d91b 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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141441 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-07 23:40:49 +00:00
Douglas Gregor f34fa6f34e U is good enough 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140166 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-20 18:33:29 +00:00
Douglas Gregor f83f0f8246 Eliminate sign-comparison warnings in APInt 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140158 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-20 18:11:52 +00:00
Benjamin Kramer 586a55a290 Silence -Wsign-compare warnings from GCC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140043 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-19 20:08:54 +00:00
Douglas Gregor dcd9996241 Add APInt support for converting to/from hexatridecimal strings 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139695 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-14 15:54:46 +00:00
Jeffrey Yasskin 3ba292dbc2 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135431 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-18 21:45:40 +00:00
Ted Kremenek cf886188fb 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!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133032 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-15 00:51:55 +00:00
Chris Lattner c4cb237ca6 fix a bug for hosts without round, PR8893. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131842 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-22 06:03:53 +00:00
Chris Lattner 7a2bdde0a0 Fix a ton of comment typos found by codespell. Patch by 
Luis Felipe Strano Moraes!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129558 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 05:18:47 +00:00
Frits van Bommel 6208610fd6 Constant folding support for calls to umul.with.overflow(), basically identical to the smul.with.overflow() code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128379 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-27 14:26:13 +00:00
Benjamin Kramer d9103df51b 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127828 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-17 20:39:06 +00:00
Cameron Zwarich 8d7285d0e5 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126097 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-21 00:22:02 +00:00
Jay Foad 40f8f6264d 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121120 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-07 08:25:19 +00:00
Benjamin Kramer fd6d53fbad APInt: microoptimize a few methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120912 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-04 18:05:36 +00:00
Jay Foad 7a874ddda0 PR5207: Rename overloaded APInt methods set(), clear(), flip() to 
setAllBits(), setBit(unsigned), etc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120564 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-01 08:53:58 +00:00
Jay Foad a99793c5ea PR5207: Make APInt::set(), APInt::clear() and APInt::flip() return void. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120413 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-30 09:02:01 +00:00
Dan Gohman 078d967e0a Bounds-check APInt's operator[]. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119708 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-18 17:14:56 +00:00
Chris Lattner a5bbde8efd fix a bug I introduced, no idea how this didn't repro right. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116462 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-14 00:30:00 +00:00
Chris Lattner eafc5cb80d 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116457 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-14 00:05:07 +00:00
Chris Lattner 0a0a585e6b constify these methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116455 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-13 23:54:10 +00:00
Chris Lattner f2ddc64c87 add a few operations for signed operations that also 
return an overflow flag.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116452 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-13 23:46:33 +00:00
Chris Lattner 5083912dd7 stomp some more undefined behavior, PR7775. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111337 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-18 00:33:47 +00:00
Benjamin Kramer 38e59891ee Don't pass StringRef by reference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108366 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-14 22:38:02 +00:00
Chris Lattner 4c297c9153 improve portability to systems that don't have round, patch by 
Evzen Muller!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103877 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-15 17:11:55 +00:00
Chris Lattner 67eadb397a improve portability to minix, patch by 
Kees van Reeuwijk for PR6704


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99677 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-26 23:54:15 +00:00
Dan Gohman 16e02097d2 Fix minor style issues. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99414 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-24 19:38:02 +00:00
John McCall e12b73816b 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97364 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-28 02:51:25 +00:00
Dan Gohman f451cb870e Fix "the the" and similar typos. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95781 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-10 16:03:48 +00:00
John McCall 281d051921 Make APInt::countLeadingZerosSlowCase() treat the contents of padding bits 
as undefined.  Fixes an assertion in APFloat::toString noticed by Dale.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95196 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-03 03:42:44 +00:00
David Greene 465abed388 Change errs() to dbgs(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92643 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 01:28:52 +00:00
John McCall d73bf5987a Set Remainder before Quotient in case Quotient and LHS alias. The new 
order should be immune to such problems.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92124 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-24 08:52:06 +00:00
Daniel Dunbar a279bc3da5 Tabs -> spaces, and remove trailing whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82355 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-20 02:20:51 +00:00
Duncan Sands b7c5bdf843 Remove some unused variables and methods warned about by 
icc (#177, partial).  Patch by Erick Tryzelaar.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81106 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-06 08:33:48 +00:00
Chris Lattner 91021d3390 remove the dead std::ostream APInt inserter 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79875 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-23 23:11:28 +00:00
Erick Tryzelaar 56c39eb232 Clean up the APInt function getDigit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79602 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-21 06:48:37 +00:00