This makes -indvars require and use LCSSA, updating it as appropriate.

llvm-svn: 34896

llvm-svn: 34891

Constant::isNullValue() in situations where it is possible.

llvm-svn: 34821

llvm-svn: 34176

the Transforms library. This reduces debug library size by 132 KB, debug
binary size by 376 KB, and reduces link time for llvm tools slightly.

llvm-svn: 33939

llvm-svn: 33715

llvm-svn: 33693

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! :)

llvm-svn: 33225

llvm-svn: 33218

llvm-svn: 33150

Implement the arbitrary bit-width integer feature. The feature allows
integers of any bitwidth (up to 64) to be defined instead of just 1, 8,
16, 32, and 64 bit integers.

This change does several things:
1. Introduces a new Derived Type, IntegerType, to represent the number of
   bits in an integer. The Type classes SubclassData field is used to
   store the number of bits. This allows 2^23 bits in an integer type.
2. Removes the five integer Type::TypeID values for the 1, 8, 16, 32 and
   64-bit integers. These are replaced with just IntegerType which is not
   a primitive any more.
3. Adjust the rest of LLVM to account for this change.

Note that while this incremental change lays the foundation for arbitrary
bit-width integers, LLVM has not yet been converted to actually deal with
them in any significant way. Most optimization passes, for example, will
still only deal with the byte-width integer types.  Future increments
will rectify this situation.

llvm-svn: 33113

This patch converts getPrimitiveSize to getPrimitiveSizeInBits where it is
appropriate to do so (comparison of integer primitive types).

llvm-svn: 33012

llvm-svn: 32971

This patch replaces signed integer types with signless ones:
1. [US]Byte -> Int8
2. [U]Short -> Int16
3. [U]Int   -> Int32
4. [U]Long  -> Int64.
5. Removal of isSigned, isUnsigned, getSignedVersion, getUnsignedVersion
   and other methods related to signedness. In a few places this warranted
   identifying the signedness information from other sources.

llvm-svn: 32785

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.

llvm-svn: 32751

converted, we lose a static initializer.  This also allows GCC to emit warnings
about unused statistics.

llvm-svn: 32690

is 'unsigned'.

llvm-svn: 32279

The long awaited CAST patch. This introduces 12 new instructions into LLVM
to replace the cast instruction. Corresponding changes throughout LLVM are
provided. This passes llvm-test, llvm/test, and SPEC CPUINT2000 with the
exception of 175.vpr which fails only on a slight floating point output
difference.

llvm-svn: 31931

llvm-svn: 30555

llvm-svn: 29925

llvm-svn: 29886

llvm-svn: 29874

I'm going to wait to put this in HEAD until tomorrow, so as not to clutter the nightly
tester.

llvm-svn: 29868

forgot to put in the analysis usage.

llvm-svn: 29867

llvm-svn: 29765

This should fix PR 831.

llvm-svn: 29141

llvm-svn: 29134

llvm-svn: 29126

didn't start showing up until after the recent instcombine fixes.

llvm-svn: 29102

will make Shootout-C/nestedloop faster.

llvm-svn: 28924

"LCSSA" phi node causes indvars to break dominance properties.  This fixes
causes indvars to avoid inserting aggressive code in this case, instead
indvars should be fixed to be more aggressive in the face of lcssa phi's.

llvm-svn: 28850

half the problem.

llvm-svn: 24414

compiling mysql reported by Ted Kremenek.

llvm-svn: 24402

constant stride.  This implements Transforms/IndVarsSimplify/variable-stride-ivs.ll

llvm-svn: 22744

other passes may use it.

llvm-svn: 22557

BB iterator.  This fixes Transforms/IndVarsSimplify/2005-06-15-InstMoveCrash.ll

llvm-svn: 22221

llvm-svn: 21427

llvm-svn: 20181

and PR504.

llvm-svn: 20129

and work better with VC++.  Patch contributed by Morten Ofstad!

llvm-svn: 17281