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25 Commits

Author SHA1 Message Date
Benjamin Kramer 09a51bab5d Add an argument to APInt's magic udiv calculation to specify the number of bits that are known zero in the divided number. 
This will come in handy soon.

llvm-svn: 127828
 2011-03-17 20:39:06 +00:00
Cameron Zwarich 8731d0cc83 The signed version of our "magic number" computation for the integer approximation 
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
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
Jakob Stoklund Olesen e1e70b93ca Attempt to unbreak the FreeBSD buildbot by XFAILing a unit test that seems to be 
miscompiled by the system gcc-4.2.1

The test remains enabled for the second-stage test.

llvm-svn: 113824
 2010-09-14 00:51:58 +00:00
Chandler Carruth bc3e8a7c93 Switch from EXPECT_EQ({true,false, ...) to the more canonical 
EXPECT_{TRUE,FALSE}(...) macros. This also prevents suprious warnings about
bool-to-pointer conversion that occurs withit EXPECT_EQ.

llvm-svn: 108248
 2010-07-13 17:28:05 +00:00
Jeffrey Yasskin b5cd01335b Fix death tests in -Asserts builds. 
llvm-svn: 98701
 2010-03-17 01:18:45 +00:00
Duncan Sands f7ad620c62 Pacify the compiler (signed with unsigned comparison) by making 
these constants unsigned.

llvm-svn: 83962
 2009-10-13 09:23:11 +00:00
Dan Gohman c4e367b854 Add a ceilLogBase2 function to APInt. 
llvm-svn: 83932
 2009-10-13 01:49:02 +00:00
Daniel Dunbar 73e76a1d60 Fix a few more conversion warnings on 4.0 
llvm-svn: 82232
 2009-09-18 17:48:05 +00:00
Daniel Dunbar 0ec4ed7b74 Another try at fixing compile warnings on 4.0 
llvm-svn: 82148
 2009-09-17 17:46:53 +00:00
Daniel Dunbar 6ced391121 Attempt to fix some 4.0.0 build warnings. 
llvm-svn: 81752
 2009-09-14 02:38:53 +00:00
Daniel Dunbar da30ecdcdd Simplify, now that gtest supports raw_ostream directly. 
llvm-svn: 81102
 2009-09-06 02:31:26 +00:00
Chris Lattner 0ffe0e096d split raw_os_ostream out to its own header and implementation file. This 
means that raw_ostream no longer has to #include <iosfwd>.  Nothing in llvm
should use raw_os_ostream.h, but llvm-gcc and some unit tests do.

llvm-svn: 79886
 2009-08-24 04:02:06 +00:00
Daniel Dunbar 40b384eade Unbreak unit tests. 
llvm-svn: 79879
 2009-08-24 02:02:58 +00:00
Bill Wendling ef793ccbdc Correct for recent assert change. 
llvm-svn: 79601
 2009-08-21 06:35:41 +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
Erick Tryzelaar 927191f179 Wrap unit test death tests in GTEST_HAS_DEATH_TEST 
llvm-svn: 79218
 2009-08-17 00:55:33 +00:00
Erick Tryzelaar 2b01eab81c Add failure tests to APInt unit test. 
llvm-svn: 79209
 2009-08-16 23:36:01 +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
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
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
Misha Brukman 680336d12f * Fixed calls to APInt ctor to work for negative values on Darwin/x86 
* Converted C-style casts to C++-style casts

llvm-svn: 68613
 2009-04-08 16:17:23 +00:00
Misha Brukman d1d2c50ea7 Converted a1.ll to unittests. 
llvm-svn: 67652
 2009-03-24 21:36:09 +00:00
Misha Brukman 5182b758a0 Renamed unittest files to have a consistent {Tt}est suffix. 
llvm-svn: 67326
 2009-03-19 19:09:48 +00:00