2. Rewrite operator=(const APInt& RHS) to allow the RHS to be a different
bit width than the LHS. This makes it possible to use APInt as the key
of a DenseMap, as needed for the IntConstants map in Constants.cpp
3. Fix operator=(uint64_t) to clear unused bits in case the client assigns
a value that has more bits than the APInt allows.
4. Assert that bit widths are equal in operator==
5. Revise getHashValue() to put the bit width in the low order six bits.
This should help to make i1 0, i2 0, ... i64 0 all distinct in the
IntConstants DenseMap.
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2. Fix countTrailingZeros to use a faster algorithm.
3. Simplify sext() slightly by using isNegative().
4. Implement ashr using word-at-a-time logic instead of bit-at-a-time
5. Rename locals named isNegative so they don't clash with method name.
6. Fix fromString to compute negated value correctly.
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2. Implement the trunc, sext, and zext operations.
3. Improve fromString to accept negative values as input.
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2. Move comments for methods to .h file, delete them in .cpp file.
3. All places that were doing manual clear of high order bits now call the
clearUnusedBits() method in order to not depend on undefined behavior
of the >> operator when the number of bits shifted equals the word size.
4. Reduced # of loc by using the new result of clearUnusedBits() method.
5. Simplified logic (decreased indentation) in a few places.
6. Added code comments to larger functions that needed them.
7. Added FIXME notes about weak implementations of things (e.g. bit-by-bit
shift right is sub-optimal).
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2. Clean up comments, style, coding standards, etc.
3. Simplify a constructor.
Extended testing revealed some additional bugs in shifting. I'll fix these
tomorrow.
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to be safe.
2. Make internal functions that return a carry/borrow return bool instead
of uint64_t because the carry/borrow can only be in range [0,1].
3. Assert that the pointers to KnuthDiv are all different so that the
result and operands can't overlap.
4. Add debug output to KnuthDiv function.
5. Fix a problem with KnuthDiv by separating the b's complement operation
from the subtraction borrow operation. This fixes a wide range of
division problems, but alas, not all of them.
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memory (as done in fromString).
2. Implement Knuth divide more closely to what is recommended in his book.
3. Fix computation of the remainder for Knuth Divide (bad shifting).
4. Remove some cruft from the file
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extract the value, not the number of words implied by the active bits.
This fixes numerous, but not all divide bugs.
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word size. This fixes all reads of uninitialized data (buffer over read)
and makes APInt.cpp memory clean, per valgrind. The only remaining
problem is division in a few cases.
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2. Change 0 initialization of union to larger component so all is zeroed.
3. Fix the borrow logic in subtraction so it works for > 128 bits.
4. Rewrite fromString to use a simpler but correct algorithm and also to
not set the bit width contrary to the user's request.
5. Optimize toString a bit by making it only do one Knuth divide per
iteration instead of two.
With these changes, all arithmetic passes (verified by pari/GP) up to
1024 bits except for certain division cases.
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1. Ensure pVal is set to 0 in each constructor.
2. Fix roundToDouble to make correct calculations and not read beyond the
end of allocated memory.
3. Implement Knuth's "classical algorithm" for division from scratch and
eliminate buffer overflows and uninitialized mememory reads. Document
it properly too.
4. Implement a wrapper function for KnuthDiv which handles the 64-bit to
32-bit conversion and back. It also implement short division for the
n == 1 case that Knuth's algorithm can't handle.
5. Simplify the logic of udiv and urem a little, make them exit early, and
have them use the "divide" wrapper function to perform the division
or remainder operation.
6. Move the toString function to the end of the file, closer to where
the division functions are located.
Note: division is still broken for some > 64 bit values, but at least it
doesn't crash any more.
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2. Implement toString for power-of-2 radix without using divide and always
printing full words. This allows hex/binary to look at the bit
respresentation of the APInt as well as avoid bugs in divide.
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2. Consolidate memory allocation into just two inline functions.
3. Convert "unsigned" to uint32_t to gaurantee its size.
4. Eliminate magic constants and replace with symbolic equivalent.
5. Improve code documentation slightly.
6. Simplify the logical operator code because bitwidths must be the same.
7. Fix indentation per coding standards.
8. Use exit-early style to reduce indentation in several functions.
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1. Function style changes.
2. 80-col violations.
3. Better names for things.
4. Arrange constructors so they all take bit width first.
5. Add named signed and unsigned comparison functions and remove the
corresponding operators.
6. Remove operator&& and operator|| but provide a getBoolValue function which
converts to bool as comparison against 0. This allows the normal && and
|| operators to be used as if (X.getBoolValue() && Y.getBoolValue())
Note: this still doesn't function 100% yet. I'm working on the bugs now.
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1. Make getMinValue() returns the right value.
2. Fix the ByteSwap() crash problem.
3. Make Postfix increment work correctly.
4. Fix some bugs in LogBase2, Hi/LoBits and UDiv.
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1. Make all the operators use uppercase
2. Rename APIntRoundToDouble method just RoundToDouble, the APInt is
redundant.
3. Turn the class on for compilation.
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add some signed/unsigned arithmetic operation functions into APInt.h to
handle the signed/unsigned issue. These functions will be defined inside a
namespace "APIntOps" which is inside llvm namespace.
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It is a functional replacement for common case integer type like "unsigned",
"uint64_t", but also allows non-byte-width integer type and large integer
value types such as 3-bits, 15-bits, or more than 64-bits of precision. For
more details, see pr1043.
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This is the final patch for this PR. It implements some minor cleanup
in the use of IntegerType, to wit:
1. Type::getIntegerTypeMask -> IntegerType::getBitMask
2. Type::Int*Ty changed to IntegerType* from Type*
3. ConstantInt::getType() returns IntegerType* now, not Type*
This also fixes PR1120.
Patch by Sheng Zhou.
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rename Type::getIntegralTypeMask to Type::getIntegerTypeMask.
This makes naming much more consistent. For example, there are now no longer any
instances of IntegerType that are not considered isInteger! :)
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recommended that getBoolValue be replaced with getZExtValue and that
get(bool) be replaced by get(const Type*, uint64_t). This implements
those changes.
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Merge ConstantIntegral and ConstantBool into ConstantInt.
Remove ConstantIntegral and ConstantBool from LLVM.
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This patch removes the SetCC instructions and replaces them with the ICmp
and FCmp instructions. The SetCondInst instruction has been removed and
been replaced with ICmpInst and FCmpInst.
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(STATISTIC), which allows us to define statistics that don't introduce
static ctors into the .o files. I'm migrating code over to use this
incrementally.
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rework the hacks that had us passing OStream in. We pass in std::ostream*
instead, check for null, and then dispatch to the correct print() method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32636 91177308-0d34-0410-b5e6-96231b3b80d8
Rename getZeroExtend and getSignExtend to getZExt and getSExt to match
the the casting mnemonics in the rest of LLVM.
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Instead, the stat info is printed when llvm_shutdown() is called.
These also don't need static ctors, but getting rid of them is uglier:
still investigating. This reduces the number of static dtors in llvm from
~1400 to ~750.
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stream. It centralizes the use of std::cerr so that static c'tor/d'tors
aren't scattered around all over the place. The way to use it is like this:
DOUT << "This is a status line: " << Var << "\n";
If "-debug" is specified, it will print. Otherwise, it'll not print. If
NDEBUG is defined, the DOUT does nothing.
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This patch implements the first increment for the Signless Types feature.
All changes pertain to removing the ConstantSInt and ConstantUInt classes
in favor of just using ConstantInt.
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to describe the difference being reported. This assists with understanding
differences an llvm-test and should help with bugpoint too.
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anchor methods to others. This eliminates the vtable/template method bloat
in .o files that defining a cl::opt used to impose (~4K per .o file for one
cp::opt<unsigned>).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29909 91177308-0d34-0410-b5e6-96231b3b80d8
Final remove of exception handling from this file. lib/System can no longer
throw exceptions so there's no need for try/catch blocks here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29848 91177308-0d34-0410-b5e6-96231b3b80d8
portion fo the program name via sys::Path().getLast(). This makes error
messages more readable since this is invariably used only in error
messages. Instead of:
/path/to/llvm/bin/directory/toolname: error message
we will now get:
toolname: error message
Also, since we always have a program name (even if its defaulted), don't
check to see if it is set or not when generating error messages. This
eliminates a bunch of constant strings, saving a little under 1K of data.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29842 91177308-0d34-0410-b5e6-96231b3b80d8
Adjust users of MappedFile to its new non-throwing interface. Note that in
most cases the lazy step of just throwing after a call to MappedFile was
installed. This was done in the name of incremental changes. Getting rid of
the new throw statements will take adjustment of interfaces and propagation
of errors to higher levels. Those changes will come in subsequent patches.
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Adjust usage of the ExecuteAndWait function to use the last argument which
is the ErrMsg string. This is necessitated because this function no longer
throws exceptions on error.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29791 91177308-0d34-0410-b5e6-96231b3b80d8
Make sys::Program::ExecuteAndWait not throw exceptions and update any
affected code. It now return -9999 to signal that the program couldn't be
executed. Only one case (in bugpoint) actually examines the result code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29785 91177308-0d34-0410-b5e6-96231b3b80d8
to build a loadable module is now correctly defined and documented so this
workaround isn't needed any longer.
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instead of throwing an exception. This reduces the amount of code that is
exposed to exceptions (e.g. FileUtilities), though it is clearly only one step
along the way.
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1. Move IncludeFile.h to System library
2. Move IncludeFile.cpp to System library
3. #1 and #2 required to prevent cyclic library dependencies for libSystem
4. Convert all existing uses of Support/IncludeFile.h to System/IncludeFile.h
5. Add IncludeFile support to various lib/System classes.
6. Add new lib/System classes to LinkAllVMCore.h
All this in an attempt to pull in lib/System to what's required for VMCore
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Low Level Virtual Machine (http://llvm.org/):
llvm version 1.8cvs
DEBUG build with assertions.
instead of like this:
Low Level Virtual Machine (llvm) 1.8cvs (see http://llvm.org/) ASSERTIONS ENABLED
Also, add a place for vendor version info.
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Refactor the Graph writing code to use a common implementation which is
now in lib/Support/GraphWriter.cpp. This completes the PR.
Patch by Anton Korobeynikov. Thanks, Anton!
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Break the "IncludeFile" mechanism into its own header file and adjust other
files accordingly. Use this facility for the IntrinsicInst problem which
was the subject of PR800.
More to follow on this.
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through to gcc when its being used as a linker. This allows -L and -l
(and any other) options to be added so that non-complete bytecode files
can be processed with bugpoint. The -Xlinker option can be added as many
times as needed.
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built with CommandLine.h will want the --version option to report that the
tool belongs to LLVM. To override simply pass a void func() to the
cl::SetVersionPrinter() function and that void func() will be called when
it is time to print the version information.
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BCWriter, and bzip2 libraries. Adjust the various makefiles to accommodate
these changes. This was done to speed up link times.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28610 91177308-0d34-0410-b5e6-96231b3b80d8
/bzlib.c:126: warning: string length `1056' is greater than the length `509' ISO
C89 compilers are required to support
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Add an additional catch block to ensure that this function can't throw any
exceptions, even one's we're not expecting.
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the bzip2 homepage, only ancient (gcc 2.7.x ?) versions of GCC
require this? It certainly isn't needed for the current bzip2
sources.
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Move the system dependent portion to lib/System/*/Alarm.inc. This makes the
SlowOperationInformer platform independent.
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This chagne just renames some sys::Path methods to ensure they are not
misused. The Path documentation now divides methods into two dimensions:
Path/Disk and accessor/mutator. Path accessors and mutators only operate
on the Path object itself without making any disk accesses. Disk accessors
and mutators will also access or modify the file system. Because of the
potentially destructive nature of disk mutators, it was decided that all
such methods should end in the work "Disk" to ensure the user recognizes
that the change will occur on the file system. This patch makes that
change. The method name changes are:
makeReadable -> makeReadableOnDisk
makeWriteable -> makeWriteableOnDisk
makeExecutable -> makeExecutableOnDisk
setStatusInfo -> setStatusInfoOnDisk
createDirectory -> createDirectoryOnDisk
createFile -> createFileOnDisk
createTemporaryFile -> createTemporaryFileOnDisk
destroy -> eraseFromDisk
rename -> renamePathOnDisk
These changes pass the Linux Deja Gnu tests.
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Get rid of the difference between file paths and directory paths. The Path
class now simply stores a path that can refer to either a file or a
directory. This required various changes in the implementation and interface
of the class with the corresponding impact to its users. Doxygen comments were
also updated to reflect these changes. Interface changes are:
appendDirectory -> appendComponent
appendFile -> appendComponent
elideDirectory -> eraseComponent
elideFile -> eraseComponent
elideSuffix -> eraseSuffix
renameFile -> rename
setDirectory -> set
setFile -> set
Changes pass Dejagnu and llvm-test/SingleSource tests.
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BZ_OK (meaning more data is expected) but there is no more input data. In
this case, the input file is probably truncated. Generate an exception that
indicates this case when its detected.
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handling zero length files a little more intelligently. If both files are
zero length then we return 0 (true) indicating a match. If only one of the
files is zero length then we return 1 (false) indicating that the files
differ. If the files don't agree in length then they can't match so we
skip the first loop that looks for a quick match.
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cases it represented them as 'unsigned's, which are not enough for 64-bit
hosts. In other cases, it represented them as uint64_t's, which are
inefficient for 32-bit hosts.
This patch unifies all of the sizes to use size_t instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19918 91177308-0d34-0410-b5e6-96231b3b80d8
portability, the --track-space option was inadvertently ignored. This patch
fixes that so that sys::Process::GetMallocUsage() is only invoked if the
--track-spaces option is given. Apparently the mallinfo() call that
GetMallocUsage() uses is *very* slow, especially when processing very large
modules like projects/llvm-test/MultiSource/Applications/kimwitu++.
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* Move system dependent implementation out of this file.
* Make implementation use sys::Process::GetMallocUsage where necessary.
* Make implementation use sys::Process::GetTimeUsage where necessary.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19053 91177308-0d34-0410-b5e6-96231b3b80d8
* Pass sys::Path instead of std::string for paths
* Correct the types of arguments passed to RunProgramWithTimeout due to its
interface using sys::Path instead of std::string
* Replace "/dev/null" (not portable) with empty string which
sys::Program::ExecuteAndWait recognizes as "redirect to bit bucket"
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19041 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unneeded header files.
* Move RedirectFD static function to lib/System/Unix/Program.cpp
* Delete RunProgramWithTimeout, now implemented by
sys::Program::ExecuteAndWait. RunProgramWithTimeout is now a convenience func.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19040 91177308-0d34-0410-b5e6-96231b3b80d8
* Make the OutputC and OutputAsm functions work with sys::Path for the output
file name instead of using std::string.
* Get rid of extraneous "toString" calls.
* Change "removeFile" to sys::Path::destroyFile()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19000 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove the "removeFile" function, now implemented by the
sys::Path::destroyFile method.
* Make the FileRemove work with a sys::Path instead of a std::string
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18999 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove #inclusion of FileUtilities.h, not needed any more.
* Convert getUniqueFilename -> sys::Pat::makeUnique()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18948 91177308-0d34-0410-b5e6-96231b3b80d8
Remove getUniqueFilename and CopyFile. These are now implemented by
sys::Path::makeUnique and sys::CopyFile, respectively.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18946 91177308-0d34-0410-b5e6-96231b3b80d8
Adjust to changes in the interface of FindExecutable, getting ToolRunner
ready for bigger things to come.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18919 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove isExecutable as its now implemented by sys::Path::executable
* Make FindExecutable a thin veneer over sys::Program::FindProgramByName.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18918 91177308-0d34-0410-b5e6-96231b3b80d8
Remove AllocateRWXMemory as it is not used any more in LLVM. The function
has been replaced with sys::Memory::AllocateRWX several months ago.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18912 91177308-0d34-0410-b5e6-96231b3b80d8
Remove the MakeFileReadable and MakeFileExecutable functions which are no
longer present in LLVM. They have been replaced with the sys::Path methods
makeReadable and makeExecutable, respectively.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18910 91177308-0d34-0410-b5e6-96231b3b80d8
The ReadFileIntoAddressSpace and UnmapFileFromAddressSpace functions are no
longer used by LLVM. Remove them. Replacement functionality for both
functions is now encapsulated in the sys::MappedFile class.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18903 91177308-0d34-0410-b5e6-96231b3b80d8
The getFileTimestamp and getFileSize functions have been removed from \
FileUtilities.{h,cpp}. They are replaced by Path::getTimestamp and \
Path::getSize,respectively.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18892 91177308-0d34-0410-b5e6-96231b3b80d8
