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path: root/lib/Support/APInt.cpp
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2012-09-27Revert 'Fix a typo 'iff' => 'if''. iff is an abreviation of if and only if. ↵Sylvestre Ledru
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
2012-09-27Fix a typo 'iff' => 'if'Sylvestre Ledru
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164767 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-11PR13326: Fix a subtle edge case in the udiv -> magic multiply generator.Benjamin Kramer
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
2012-06-08Fix a crash in APInt::lshr when shiftAmt > BitWidth.Chad Rosier
Patch by James Benton <jbenton@vmware.com>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158213 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-14Move APInt::operator[] inline.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152692 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-14Move APInt::operator! inline, it's small and fuses well with surrounding ↵Benjamin Kramer
code when inlined. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152688 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-12Inline a trivial helper function.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152577 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-11Replace a hand-coded leading one counting loop with the magic from MathExtras.h.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152545 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-04Replace the hashing functions on APInt and APFloat with overloads of theChandler Carruth
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
2012-02-24Fix undefined behavior.Ahmed Charles
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151385 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-27Add r149110 back with a fix for when the vector and the int have the sameRafael Espindola
width. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149151 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-22Fix APInt::rotl and APInt::rotr so that they work correctly. Found while ↵Eli Friedman
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
2011-12-16APInt: update asserts for base-36Dylan Noblesmith
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
2011-12-01Fix unreachable return & simplify some branches.David Blaikie
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145627 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-23Correctly byte-swap APInts with bit-widths greater than 64.Richard Smith
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145111 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-07Fix APInt::operator*= so that it computes the correct result for large ↵Eli Friedman
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
2011-09-20U is good enoughDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140166 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-20Eliminate sign-comparison warnings in APIntDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140158 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-19Silence -Wsign-compare warnings from GCC.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140043 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-14Add APInt support for converting to/from hexatridecimal stringsDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139695 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-18Add APInt(numBits, ArrayRef<uint64_t> bigVal) constructor to prevent future ↵Jeffrey Yasskin
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
2011-06-15add option for literal formatting to APInt::toString()Ted Kremenek
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
2011-05-22fix a bug for hosts without round, PR8893.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131842 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-15Fix a ton of comment typos found by codespell. Patch byChris Lattner
Luis Felipe Strano Moraes! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129558 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-27Constant folding support for calls to umul.with.overflow(), basically ↵Frits van Bommel
identical to the smul.with.overflow() code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128379 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17Add an argument to APInt's magic udiv calculation to specify the number of ↵Benjamin Kramer
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
2011-02-21The signed version of our "magic number" computation for the integer ↵Cameron Zwarich
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
2010-12-07PR5207: Change APInt methods trunc(), sext(), zext(), sextOrTrunc() andJay Foad
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
2010-12-04APInt: microoptimize a few methods.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120912 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-01PR5207: Rename overloaded APInt methods set(), clear(), flip() toJay Foad
setAllBits(), setBit(unsigned), etc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120564 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-30PR5207: Make APInt::set(), APInt::clear() and APInt::flip() return void.Jay Foad
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120413 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Bounds-check APInt's operator[].Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119708 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-14fix a bug I introduced, no idea how this didn't repro right.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116462 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-14add uadd_ov/usub_ov to apint, consolidate constant foldingChris Lattner
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
2010-10-13constify these methods.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116455 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-13add a few operations for signed operations that also Chris Lattner
return an overflow flag. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116452 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-18stomp some more undefined behavior, PR7775.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111337 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-14Don't pass StringRef by reference.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108366 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15improve portability to systems that don't have round, patch byChris Lattner
Evzen Muller! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103877 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-26improve portability to minix, patch by Chris Lattner
Kees van Reeuwijk for PR6704 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99677 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-24Fix minor style issues.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99414 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-28Teach APFloat how to create both QNaNs and SNaNs and with arbitrary-widthJohn McCall
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
2010-02-10Fix "the the" and similar typos.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95781 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-03Make APInt::countLeadingZerosSlowCase() treat the contents of padding bitsJohn McCall
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
2010-01-05Change errs() to dbgs().David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92643 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-24Set Remainder before Quotient in case Quotient and LHS alias. The newJohn McCall
order should be immune to such problems. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92124 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-20Tabs -> spaces, and remove trailing whitespace.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82355 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-06Remove some unused variables and methods warned about byDuncan Sands
icc (#177, partial). Patch by Erick Tryzelaar. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81106 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23remove the dead std::ostream APInt inserterChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79875 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-21Clean up the APInt function getDigit.Erick Tryzelaar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79602 91177308-0d34-0410-b5e6-96231b3b80d8
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