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128 Commits

Author SHA1 Message Date
Neil Booth
ba205229e7 Now that convertFromUnsignedParts has a sane, constant interface, 
convertFromZeroExtendedInteger can be simplified as it doesn't need
to make a copy of the source bignum.

llvm-svn: 42734
 2007-10-07 12:10:57 +00:00
Neil Booth
6c1c8588ae Reimplement convertFromUnsignedInteger so it is passed a const bignum. 
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.

llvm-svn: 42733
 2007-10-07 12:07:53 +00:00
Neil Booth
5f00973393 convertFromInteger, as originally written, expected sign-extended 
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.

llvm-svn: 42732
 2007-10-07 11:45:55 +00:00
Neil Booth
d3985924f4 combineLostFractions does not need to be a member function 
llvm-svn: 42729
 2007-10-07 08:51:21 +00:00
Neil Booth
32897f5eb0 Cleaner, more general exponent output. 
llvm-svn: 42690
 2007-10-06 07:29:25 +00:00
Chris Lattner
2a9bcb9ea7 silence warnings in no-assert build. 
llvm-svn: 42687
 2007-10-06 06:13:42 +00:00
Neil Booth
0ea72a9a91 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.

llvm-svn: 42669
 2007-10-06 00:24:48 +00:00
Neil Booth
8f1946fa22 Add APFloat -> hexadecimal string conversion, as per %a and %A in C99. 
Useful for diagnostics and debugging.

llvm-svn: 42598
 2007-10-03 22:26:02 +00:00
Neil Booth
1ca1f80b38 Tweak RoundAwayFromZero the bit number below which is truncated, and make 
it const.

Preparation for APFloat -> hexadecimal string conversion.

llvm-svn: 42576
 2007-10-03 15:16:41 +00:00
Dale Johannesen
28a2c4a9c4 Simplify and fix signed int -> FP conversions. 
llvm-svn: 42483
 2007-09-30 18:17:01 +00:00
Neil Booth
9acbf5aaf9 Whitespace and compiler warning cleanup. 
llvm-svn: 42373
 2007-09-26 21:33:42 +00:00
Dale Johannesen
e7439eff5a Make APFloat->int conversions deterministic even in 
cases with undefined behavior.

llvm-svn: 42328
 2007-09-25 23:07:07 +00:00
Dale Johannesen
4f55d9fe0f Fix long double<->shorter FP type conversions 
of zero, infinity, and NaNs.

llvm-svn: 42298
 2007-09-25 17:25:00 +00:00
Neil Booth
a8d7269269 Handle storage complications of float->float conversions. 
llvm-svn: 42220
 2007-09-22 02:56:19 +00:00
Dale Johannesen
4230512f32 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.

llvm-svn: 42210
 2007-09-21 22:09:37 +00:00
Dale Johannesen
146a0ea071 Fix PR 1688. See comments there. 
llvm-svn: 42181
 2007-09-20 23:47:58 +00:00
Dan Gohman
58c468fb09 Remove spurious consts. This fixes warnings with compilers that 
are strict about such things.

llvm-svn: 41956
 2007-09-14 20:08:19 +00:00
Dale Johannesen
521988b604 Compensate for partCount change in Bogus definition 
(could break hash table in ConstantFP)

llvm-svn: 41874
 2007-09-12 01:22:05 +00:00
Dale Johannesen
245dceb06d Add APInt interfaces to APFloat (allows directly 
access to bits).  Use them in place of float and
double interfaces where appropriate.
First bits of x86 long double constants handling 
(untested, probably does not work).

llvm-svn: 41858
 2007-09-11 18:32:33 +00:00
Dale Johannesen
728687c423 Fix mod so it actually works. Fix conversions to 
native types to handle denormals correctly.

llvm-svn: 41726
 2007-09-05 20:39:49 +00:00
Dale Johannesen
689d17d282 Oops, should be part of 41664; won't work very well without this piece. 
llvm-svn: 41665
 2007-08-31 23:35:31 +00:00
Dale Johannesen
3cf889f75e Enhance APFloat to retain bits of NaNs (fixes oggenc). 
Use APFloat interfaces for more references, mostly
of ConstantFPSDNode.

llvm-svn: 41632
 2007-08-31 04:03:46 +00:00
Dale Johannesen
d246b2ca5c Change LegalFPImmediates to use APFloat. 
Add APFloat interfaces to ConstantFP, SelectionDAG.
Fix integer bit in double->APFloat conversion.
Convert LegalizeDAG to use APFloat interface in
ConstantFPSDNode uses.

llvm-svn: 41587
 2007-08-30 00:23:21 +00:00
Dale Johannesen
bdea32d812 Poison APFloat::operator==. Replace existing uses with bitwiseIsEqual. 
This means backing out the preceding change to Constants.cpp, alas.

llvm-svn: 41378
 2007-08-24 22:09:56 +00:00
Dale Johannesen
918c33c67a Revised per review feedback from previous patch. 
llvm-svn: 41353
 2007-08-24 05:08:11 +00:00
Chris Lattner
3da18eb22a silence some warnings in an optimized build. 
llvm-svn: 41352
 2007-08-24 03:02:34 +00:00
Dale Johannesen
a719a60609 Change internal representation of ConstantFP to use APFloat. 
Interface to rest of the compiler unchanged, as yet.

llvm-svn: 41348
 2007-08-24 00:56:33 +00:00
Chris Lattner
fe02c1f97f initial checkin of Neil's APFloat work. 
llvm-svn: 41203
 2007-08-20 22:49:32 +00:00