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163 Commits

Author SHA1 Message Date
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