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* Get rid of bogus "control may reach end of non-void function ‘...’ beingBill Wendling2008-11-271-2/+2
| | | | | | | inlined" message. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60165 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r60042. IndVarSimplify should check if APFloat is PPCDoubleDouble ↵Evan Cheng2008-11-261-7/+1
| | | | | | first before trying to convert it to an integer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60072 91177308-0d34-0410-b5e6-96231b3b80d8
* convertToSignExtendedInteger should return opInvalidOp instead of asserting ↵Evan Cheng2008-11-251-1/+7
| | | | | | if sematics of float does not allow arithmetics. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60042 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a "loses information" return value to APFloat::convertDale Johannesen2008-10-091-14/+37
| | | | | | | | | and APFloat::convertToInteger. Restore return value to IEEE754. Adjust all users accordingly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57329 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename APFloat::convertToAPInt to bitcastToAPInt toDale Johannesen2008-10-091-4/+4
| | | | | | | | | make it clearer what the function does. No functional change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57325 91177308-0d34-0410-b5e6-96231b3b80d8
* Mark negative-zero-to-int conversion as Inexact,Dale Johannesen2008-10-071-1/+2
| | | | | | | | | | | since -0.0 can't be represented as an int. This prevents llvm from reducing -0.0 to a load-and-convert of int 0. Fixes ieee.exp/mzero[2356].c in gcc testsuite. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57224 91177308-0d34-0410-b5e6-96231b3b80d8
* Be more precise about which conversions of NaNsDale Johannesen2008-10-061-3/+18
| | | | | | | | | | are Inexact. (These are not Inexact as defined by IEEE754, but that seems like a reasonable way to abstract what happens: information is lost.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57218 91177308-0d34-0410-b5e6-96231b3b80d8
* Temporarily revert functionality change from my previous patch;Dale Johannesen2008-10-061-2/+1
| | | | | | | | it is too aggressive. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57203 91177308-0d34-0410-b5e6-96231b3b80d8
* Mark shortening NaN conversions as Inexact. PR 2856.Dale Johannesen2008-10-061-6/+9
| | | | | | | | Improve description of unsupported formats. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57185 91177308-0d34-0410-b5e6-96231b3b80d8
* Rework the routines that convert AP[S]Int into a string. Now, instead ofChris Lattner2008-08-171-2/+1
| | | | | | | | | | | | | | | | | | | 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
* remove a dead APInt ctor.Chris Lattner2008-08-171-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54869 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't assume underlying APInt type is limitedDale Johannesen2008-05-141-1/+1
| | | | | | | | to 64 bits. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51135 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove undefined behavior in hex string->APFloatDale Johannesen2008-05-141-1/+1
| | | | | | | | conversion. Try 0x1.0000a4p+0f. Neil, please review. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51132 91177308-0d34-0410-b5e6-96231b3b80d8
* Make firstEightPowers const.Dan Gohman2008-05-121-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50975 91177308-0d34-0410-b5e6-96231b3b80d8
* Suppress -Wshorten-64-to-32 warnings for 64-bit hosts.Evan Cheng2008-05-021-23/+25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50590 91177308-0d34-0410-b5e6-96231b3b80d8
* Check that APFloat::convert is not trying to targetDale Johannesen2008-04-201-0/+1
| | | | | | | | | | | ppc long double, which doesn't work. This may break some stuff temporarily, but I want to avoid the propagation of code that assumes this works. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49983 91177308-0d34-0410-b5e6-96231b3b80d8
* Make several symbols static.Dan Gohman2008-04-101-18/+18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49496 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a method to APFloat to convert directly from APInt.Dan Gohman2008-02-291-0/+17
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47738 91177308-0d34-0410-b5e6-96231b3b80d8
* Added "Profile" method to APFloat for use with FoldingSet.Ted Kremenek2008-02-111-0/+6
| | | | | | | | | | | Added member template "Add" to FoldingSetNodeID that allows "adding" arbitrary objects to a profile via dispatch to FoldingSetTrait<T>::Profile(). Removed FoldingSetNodeID::AddAPFloat and FoldingSetNodeID::APInt, as their functionality is now replaced using the above mentioned member template. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46957 91177308-0d34-0410-b5e6-96231b3b80d8
* Chris' change to print an approximation to long doublesDale Johannesen2008-01-311-1/+2
| | | | | | | | | exposed a bug in APFloat's long double->double conversion of NaNs. Broke several things in the ieee part of gcc testsuite. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46617 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove top-level const qualifiers from casts, avoiding associatedDan Gohman2008-01-291-10/+10
| | | | | | | compiler warnings. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46509 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove attribution from file headers, per discussion on llvmdev.Chris Lattner2007-12-291-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
* proper #include order.Chris Lattner2007-12-081-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44707 91177308-0d34-0410-b5e6-96231b3b80d8
* Prior commit updated wrong if, apologies.Neil Booth2007-12-051-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44614 91177308-0d34-0410-b5e6-96231b3b80d8
* Handle zero correctly.Neil Booth2007-12-051-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44613 91177308-0d34-0410-b5e6-96231b3b80d8
* Handle 0 correctly in string->APFloat conversion.Dale Johannesen2007-12-051-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44594 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix denormal check in float->APInt conversion.Dale Johannesen2007-11-171-1/+1
| | | | | | | PR 1804. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44201 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove some unnecessary C-style statics.Neil Booth2007-11-021-6/+8
| | | | | | | Restore an assertion that arithmetic can be performed on this format. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43638 91177308-0d34-0410-b5e6-96231b3b80d8
* Add back line whose removal somehow crept into prior patchNeil Booth2007-11-011-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43627 91177308-0d34-0410-b5e6-96231b3b80d8
* When converting to integer, do bit manipulations in the destinationNeil Booth2007-11-011-71/+107
| | | | | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43626 91177308-0d34-0410-b5e6-96231b3b80d8
* Clarified operator precedence.Hartmut Kaiser2007-10-251-2/+2
| | | | | | Silenced VC++ warning. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43372 91177308-0d34-0410-b5e6-96231b3b80d8
* Fast-track obviously over-large and over-small exponents during decimal->Neil Booth2007-10-151-8/+44
| | | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42984 91177308-0d34-0410-b5e6-96231b3b80d8
* Consolidate logic for creating NaNs. Silence compiler warning.Neil Booth2007-10-141-10/+15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42966 91177308-0d34-0410-b5e6-96231b3b80d8
* Whether arithmetic is supported is a property of the semantics. Make itNeil Booth2007-10-141-41/+36
| | | | | | | so, and clean up the checks by putting them in an inline function. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42965 91177308-0d34-0410-b5e6-96231b3b80d8
* Separate out parsing of decimal number. Use this to only allocateNeil Booth2007-10-141-97/+150
| | | | | | | | memory for the significand once up-front. Also ignore insignificant trailing zeroes; this saves unnecessary multiplications later. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42964 91177308-0d34-0410-b5e6-96231b3b80d8
* If the power of 5 is exact, and the reciprocal exact, the error is zero not ↵Neil Booth2007-10-131-1/+1
| | | | | | one half-ulps. This prevents an infinite loop in rare cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42950 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove duplicate comment.Neil Booth2007-10-121-11/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42913 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement correctly-rounded decimal->binary conversion, i.e. conversionNeil Booth2007-10-121-6/+349
| | | | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42912 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove a field that was never used.Neil Booth2007-10-121-9/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42911 91177308-0d34-0410-b5e6-96231b3b80d8
* If we're trying to be arbitrary precision, unsigned char clearly won't cut ↵Neil Booth2007-10-121-1/+1
| | | | | | it. Needed for dec->bin conversions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42910 91177308-0d34-0410-b5e6-96231b3b80d8
* Next PPC long double bits. First cut at constants.Dale Johannesen2007-10-111-6/+157
| | | | | | | | | | | No compile-time support for constant operations yet, just format transformations. Make readers and writers work. Split constants into 2 doubles in Legalize. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42865 91177308-0d34-0410-b5e6-96231b3b80d8
* Use APInt::tcExtract. It's cleaner, and works :)Neil Booth2007-10-081-19/+14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42746 91177308-0d34-0410-b5e6-96231b3b80d8
* Add back convertFromSignExtendedInteger.Neil Booth2007-10-071-0/+30
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42735 91177308-0d34-0410-b5e6-96231b3b80d8
* Now that convertFromUnsignedParts has a sane, constant interface,Neil Booth2007-10-071-5/+1
| | | | | | | | convertFromZeroExtendedInteger can be simplified as it doesn't need to make a copy of the source bignum. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42734 91177308-0d34-0410-b5e6-96231b3b80d8
* Reimplement convertFromUnsignedInteger so it is passed a const bignum.Neil Booth2007-10-071-18/+29
| | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42733 91177308-0d34-0410-b5e6-96231b3b80d8
* convertFromInteger, as originally written, expected sign-extendedNeil Booth2007-10-071-4/+6
| | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42732 91177308-0d34-0410-b5e6-96231b3b80d8
* combineLostFractions does not need to be a member functionNeil Booth2007-10-071-16/+15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42729 91177308-0d34-0410-b5e6-96231b3b80d8
* Cleaner, more general exponent output.Neil Booth2007-10-061-21/+22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42690 91177308-0d34-0410-b5e6-96231b3b80d8
* silence warnings in no-assert build.Chris Lattner2007-10-061-23/+20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42687 91177308-0d34-0410-b5e6-96231b3b80d8
* Generalize tcFullMultiply so that the operands can be of differingNeil Booth2007-10-061-3/+4
| | | | | | | | | 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
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