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168 Commits

Author SHA1 Message Date
Jay Foad 583abbc4df 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 f1a04edb42 APInt: microoptimize a few methods. 
llvm-svn: 120912
 2010-12-04 18:05:36 +00:00
Jay Foad 25a5e4ca1f 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 15084f085d PR5207: Make APInt::set(), APInt::clear() and APInt::flip() return void. 
llvm-svn: 120413
 2010-11-30 09:02:01 +00:00
Dan Gohman 5ed61fe6a1 Bounds-check APInt's operator[]. 
llvm-svn: 119708
 2010-11-18 17:14:56 +00:00
Chris Lattner b9681ad442 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 698661c741 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 2c819b0358 constify these methods. 
llvm-svn: 116455
 2010-10-13 23:54:10 +00:00
Chris Lattner 79bdd88fa4 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 b91c903f46 stomp some more undefined behavior, PR7775. 
llvm-svn: 111337
 2010-08-18 00:33:47 +00:00
Benjamin Kramer 92d8998348 Don't pass StringRef by reference. 
llvm-svn: 108366
 2010-07-14 22:38:02 +00:00
Chris Lattner 9e01b615a4 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 35a069b3a5 improve portability to minix, patch by 
Kees van Reeuwijk for PR6704

llvm-svn: 99677
 2010-03-26 23:54:15 +00:00
Dan Gohman b452d4e9e4 Fix minor style issues. 
llvm-svn: 99414
 2010-03-24 19:38:02 +00:00
John McCall dcb9a7ad3d 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 4a618827de Fix "the the" and similar typos. 
llvm-svn: 95781
 2010-02-10 16:03:48 +00:00
John McCall df951bddb8 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
David Greene f32fcb4d31 Change errs() to dbgs(). 
llvm-svn: 92643
 2010-01-05 01:28:52 +00:00
John McCall bd8d1e35a6 Set Remainder before Quotient in case Quotient and LHS alias. The new 
order should be immune to such problems.

llvm-svn: 92124
 2009-12-24 08:52:06 +00:00
Daniel Dunbar 7d6781b0fe Tabs -> spaces, and remove trailing whitespace. 
llvm-svn: 82355
 2009-09-20 02:20:51 +00:00
Duncan Sands 2fbeaf084f Remove some unused variables and methods warned about by 
icc (#177, partial).  Patch by Erick Tryzelaar.

llvm-svn: 81106
 2009-09-06 08:33:48 +00:00
Chris Lattner 96cffa63a2 remove the dead std::ostream APInt inserter 
llvm-svn: 79875
 2009-08-23 23:11:28 +00:00
Erick Tryzelaar 6096409238 Clean up the APInt function getDigit. 
llvm-svn: 79602
 2009-08-21 06:48:37 +00:00
Eric Christopher 43a1decc8c Update error messages for '+'. Fix grammar and make the two 
negative checks resemble each other.

llvm-svn: 79595
 2009-08-21 04:10:31 +00:00
Eric Christopher 820256bc99 Fix trailing whitespace and 80-col violation. 
llvm-svn: 79594
 2009-08-21 04:06:45 +00:00
Erick Tryzelaar dadb1571b7 Fix bug with APInt::getBitsNeeded with for base 10 numbers 0-9. 
llvm-svn: 79593
 2009-08-21 03:15:28 +00:00
Erick Tryzelaar 1264bcb4de Allow '+' to appear in APInt strings, and add more unit tests. 
llvm-svn: 79592
 2009-08-21 03:15:14 +00:00
Daniel Dunbar 8b0b11582d Switch to SmallString::str from SmallString::c_str, and remove 
SmallString::c_str.

llvm-svn: 79456
 2009-08-19 20:07:03 +00:00
Daniel Dunbar 3a1efd11bb Convert APint::{fromString,APInt,getBitsNeeded} to use StringRef. 
- Patch by Erick Tryzelaar, with some edits (and a bug fix) from me.

llvm-svn: 78885
 2009-08-13 02:33:34 +00:00
Dale Johannesen 54be785be7 Add attempted idiotproofing comment per review. 
llvm-svn: 78825
 2009-08-12 18:04:11 +00:00
Dale Johannesen 34c08bbbf9 Fix a nondeterministic bug in APInt::roundToDouble; 
when !isSingleWord() but getActiveBits() is small,
we were using the pointer value instead of the low
word of the integer value.

llvm-svn: 78821
 2009-08-12 17:42:34 +00:00
Torok Edwin fbcc663cbf llvm_unreachable->llvm_unreachable(0), LLVM_UNREACHABLE->llvm_unreachable. 
This adds location info for all llvm_unreachable calls (which is a macro now) in
!NDEBUG builds.
In NDEBUG builds location info and the message is off (it only prints
"UREACHABLE executed").

llvm-svn: 75640
 2009-07-14 16:55:14 +00:00
Daniel Dunbar 763ace92c0 Switch to raw_ostream. 
llvm-svn: 75451
 2009-07-13 05:27:30 +00:00
Torok Edwin 56d0659726 assert(0) -> LLVM_UNREACHABLE. 
Make llvm_unreachable take an optional string, thus moving the cerr<< out of
line.
LLVM_UNREACHABLE is now a simple wrapper that makes the message go away for
NDEBUG builds.

llvm-svn: 75379
 2009-07-11 20:10:48 +00:00
Dan Gohman 10f1733d9a Reapply 74494, this time removing the conflicting definition of operator<< 
in APIntTest.cpp.

llvm-svn: 74550
 2009-06-30 20:10:56 +00:00
Bill Wendling 778a517725 Temporarily revert r74494. It was causing failures in the unit tests. 
llvm-svn: 74515
 2009-06-30 07:05:27 +00:00
Dan Gohman e95d409bdd Define an operator<< for APInt to be used with std::ostream. 
This will allow it to be used in unittests that use gtest's
EXPECT_EQ.

llvm-svn: 74494
 2009-06-30 01:28:08 +00:00
Evan Cheng db338f3f41 80 column violation. 
llvm-svn: 72235
 2009-05-21 23:47:47 +00:00
Mike Stump 889285d467 Fix whitespacing (space after switch). 
llvm-svn: 71738
 2009-05-13 23:23:20 +00:00
Jay Foad fe0c648fee Move helper functions for optimizing division by constant into the APInt 
class.

llvm-svn: 70488
 2009-04-30 10:15:35 +00:00
Chris Lattner b869a0ade1 Fix PR4040: APInt's string constructor is too strict 
patch by Jeff Yasskin!

llvm-svn: 70058
 2009-04-25 18:34:04 +00:00
Dan Gohman cff6953c45 Use CHAR_BIT instead of hard-coding 8 in several places where it 
is appropriate. This helps visually differentiate host-oriented
calculations from target-oriented calculations.

llvm-svn: 68227
 2009-04-01 18:45:54 +00:00
Duncan Sands 8208465036 Fix comment typo. 
llvm-svn: 67302
 2009-03-19 11:37:15 +00:00
Stuart Hastings 7440952c01 Fix a hashing bug in APInt. A certain pathological testcase (too 
large for the testsuite) took over six minutes to compile on my Mac.
The patched LLVM-GCC compiles that testcase in three seconds (GCC
takes less than one second).  This hash function is more complex
(about 35 instructions on x86) than what Chris wanted, but I expect it
will be well-behaved with arbitrary inputs.

Thank you to everyone who responded to my previous request for advice.

llvm-svn: 66962
 2009-03-13 21:51:13 +00:00
Torok Edwin ec39eb8519 APInt's countLeadingOnes() was broken for negative i128 values, 
causing assertion failures in getSExtValue().
Fix it by making highWordBits actually contain what its name says,
and add some more unit-tests for APInt.
This fixes PR3419.

llvm-svn: 63107
 2009-01-27 18:06:03 +00:00
Chris Lattner 77527f5812 Remove uses of uint32_t in favor of 'unsigned' for better 
compatibility with cygwin.  Patch by Jay Foad!

llvm-svn: 62695
 2009-01-21 18:09:24 +00:00
Nick Lewycky 030c450fdc Fix typo, sentence fragment. 
llvm-svn: 62512
 2009-01-19 17:42:33 +00:00
Chris Lattner d57b7603f9 rearrange some code. 
llvm-svn: 57384
 2008-10-11 22:07:19 +00:00
Chris Lattner 0c19df4871 Switch the asmprinter (.ll) and all the stuff it requires over to 
use raw_ostream instead of std::ostream.  Among other goodness,
this speeds up llvm-dis of kc++ with a release build from 0.85s
to 0.49s (88% faster).

Other interesting changes:
 1) This makes Value::print be non-virtual.
 2) AP[S]Int and ConstantRange can no longer print to ostream directly, 
    use raw_ostream instead.
 3) This fixes a bug in raw_os_ostream where it didn't flush itself 
    when destroyed.
 4) This adds a new SDNode::print method, instead of only allowing "dump".


A lot of APIs have both std::ostream and raw_ostream versions, it would
be useful to go through and systematically anihilate the std::ostream 
versions.

This passes dejagnu, but there may be minor fallout, plz let me know if
so and I'll fix it.

llvm-svn: 55263
 2008-08-23 22:23:09 +00:00
Chris Lattner 1ac3e2545b Move the fast-path (<=i64) cases of various APInt methods inline 
and the slow-path cases out of line.  This speeds up instcombine
a bit in real world cases.  Patch contributed by m-s.

llvm-svn: 55063
 2008-08-20 17:02:31 +00:00