4f9a8081c3
Correctly byte-swap APInts with bit-widths greater than 64.
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llvm-svn: 145111
2011-11-23 21:33:37 +00:00
195464184e
Fix APInt::operator*= so that it computes the correct result for large 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.
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llvm-svn: 141441
2011-10-07 23:40:49 +00:00
c98ac850eb
U is good enough
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llvm-svn: 140166
2011-09-20 18:33:29 +00:00
e4e20f43e4
Eliminate sign-comparison warnings in APInt
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llvm-svn: 140158
2011-09-20 18:11:52 +00:00
c20a3ebba0
Silence -Wsign-compare warnings from GCC.
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llvm-svn: 140043
2011-09-19 20:08:54 +00:00
663c068d46
Add APInt support for converting to/from hexatridecimal strings
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llvm-svn: 139695
2011-09-14 15:54:46 +00:00
7a16288157
Add APInt(numBits, ArrayRef<uint64_t> bigVal) constructor to prevent future ambiguity
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errors like the one corrected by r135261. Migrate all LLVM callers of the old
constructor to the new one.
llvm-svn: 135431
2011-07-18 21:45:40 +00:00
b05f02e956
add option for literal formatting to APInt::toString()
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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 !
llvm-svn: 133032
2011-06-15 00:51:55 +00:00
9f1d2ded13
fix a bug for hosts without round, PR8893.
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llvm-svn: 131842
2011-05-22 06:03:53 +00:00
0ab5e2cded
Fix a ton of comment typos found by codespell. Patch by
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Luis Felipe Strano Moraes!
llvm-svn: 129558
2011-04-15 05:18:47 +00:00
0bb2ad2cf7
Constant folding support for calls to umul.with.overflow(), basically identical to the smul.with.overflow() code.
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llvm-svn: 128379
2011-03-27 14:26:13 +00:00
09a51bab5d
Add an argument to APInt's magic udiv calculation to specify the number of bits that are known zero in the divided number.
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This will come in handy soon.
llvm-svn: 127828
2011-03-17 20:39:06 +00:00
8731d0cc83
The signed version of our "magic number" computation for the integer approximation
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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.
llvm-svn: 126097
2011-02-21 00:22:02 +00:00
583abbc4df
PR5207: Change APInt methods trunc(), sext(), zext(), sextOrTrunc() and
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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
f1a04edb42
APInt: microoptimize a few methods.
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llvm-svn: 120912
2010-12-04 18:05:36 +00:00
25a5e4ca1f
PR5207: Rename overloaded APInt methods set(), clear(), flip() to
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setAllBits(), setBit(unsigned), etc.
llvm-svn: 120564
2010-12-01 08:53:58 +00:00
15084f085d
PR5207: Make APInt::set(), APInt::clear() and APInt::flip() return void.
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llvm-svn: 120413
2010-11-30 09:02:01 +00:00
5ed61fe6a1
Bounds-check APInt's operator[].
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llvm-svn: 119708
2010-11-18 17:14:56 +00:00
b9681ad442
fix a bug I introduced, no idea how this didn't repro right.
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llvm-svn: 116462
2010-10-14 00:30:00 +00:00
698661c741
add uadd_ov/usub_ov to apint, consolidate constant folding
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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
2c819b0358
constify these methods.
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llvm-svn: 116455
2010-10-13 23:54:10 +00:00
79bdd88fa4
add a few operations for signed operations that also
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return an overflow flag.
llvm-svn: 116452
2010-10-13 23:46:33 +00:00
b91c903f46
stomp some more undefined behavior, PR7775.
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llvm-svn: 111337
2010-08-18 00:33:47 +00:00
92d8998348
Don't pass StringRef by reference.
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llvm-svn: 108366
2010-07-14 22:38:02 +00:00
9e01b615a4
improve portability to systems that don't have round, patch by
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Evzen Muller!
llvm-svn: 103877
2010-05-15 17:11:55 +00:00
35a069b3a5
improve portability to minix, patch by
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Kees van Reeuwijk for PR6704
llvm-svn: 99677
2010-03-26 23:54:15 +00:00
b452d4e9e4
Fix minor style issues.
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llvm-svn: 99414
2010-03-24 19:38:02 +00:00
dcb9a7ad3d
Teach APFloat how to create both QNaNs and SNaNs and with arbitrary-width
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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
4a618827de
Fix "the the" and similar typos.
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llvm-svn: 95781
2010-02-10 16:03:48 +00:00
df951bddb8
Make APInt::countLeadingZerosSlowCase() treat the contents of padding bits
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as undefined. Fixes an assertion in APFloat::toString noticed by Dale.
llvm-svn: 95196
2010-02-03 03:42:44 +00:00
f32fcb4d31
Change errs() to dbgs().
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llvm-svn: 92643
2010-01-05 01:28:52 +00:00
bd8d1e35a6
Set Remainder before Quotient in case Quotient and LHS alias. The new
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order should be immune to such problems.
llvm-svn: 92124
2009-12-24 08:52:06 +00:00
7d6781b0fe
Tabs -> spaces, and remove trailing whitespace.
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llvm-svn: 82355
2009-09-20 02:20:51 +00:00
2fbeaf084f
Remove some unused variables and methods warned about by
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icc (#177 , partial). Patch by Erick Tryzelaar.
llvm-svn: 81106
2009-09-06 08:33:48 +00:00
96cffa63a2
remove the dead std::ostream APInt inserter
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llvm-svn: 79875
2009-08-23 23:11:28 +00:00
6096409238
Clean up the APInt function getDigit.
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llvm-svn: 79602
2009-08-21 06:48:37 +00:00
43a1decc8c
Update error messages for '+'. Fix grammar and make the two
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negative checks resemble each other.
llvm-svn: 79595
2009-08-21 04:10:31 +00:00
820256bc99
Fix trailing whitespace and 80-col violation.
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llvm-svn: 79594
2009-08-21 04:06:45 +00:00
dadb1571b7
Fix bug with APInt::getBitsNeeded with for base 10 numbers 0-9.
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llvm-svn: 79593
2009-08-21 03:15:28 +00:00
1264bcb4de
Allow '+' to appear in APInt strings, and add more unit tests.
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llvm-svn: 79592
2009-08-21 03:15:14 +00:00
8b0b11582d
Switch to SmallString::str from SmallString::c_str, and remove
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SmallString::c_str.
llvm-svn: 79456
2009-08-19 20:07:03 +00:00
3a1efd11bb
Convert APint::{fromString,APInt,getBitsNeeded} to use StringRef.
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- Patch by Erick Tryzelaar, with some edits (and a bug fix) from me.
llvm-svn: 78885
2009-08-13 02:33:34 +00:00
54be785be7
Add attempted idiotproofing comment per review.
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llvm-svn: 78825
2009-08-12 18:04:11 +00:00
34c08bbbf9
Fix a nondeterministic bug in APInt::roundToDouble;
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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
fbcc663cbf
llvm_unreachable->llvm_unreachable(0), LLVM_UNREACHABLE->llvm_unreachable.
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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
763ace92c0
Switch to raw_ostream.
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llvm-svn: 75451
2009-07-13 05:27:30 +00:00
56d0659726
assert(0) -> LLVM_UNREACHABLE.
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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
10f1733d9a
Reapply 74494, this time removing the conflicting definition of operator<<
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in APIntTest.cpp.
llvm-svn: 74550
2009-06-30 20:10:56 +00:00
778a517725
Temporarily revert r74494. It was causing failures in the unit tests.
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llvm-svn: 74515
2009-06-30 07:05:27 +00:00
e95d409bdd
Define an operator<< for APInt to be used with std::ostream.
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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
Richard Smith