undef operands.

llvm-svn: 32899

llvm-svn: 32893

llvm-svn: 32890

llvm-svn: 32866

llvm-svn: 32858

llvm-svn: 32827

llvm-svn: 32803

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

Fix this by ensuring that a bitcast is inserted to do sign switching. This
is only temporarily needed as the merging of signed and unsigned is next
on the SignlessTypes plate.

llvm-svn: 32757

correctly and emit "may be used uninitialized" warnings.

llvm-svn: 32756

Don't allow CmpInst instances to be processed in FoldSelectOpOp because
you can't easily swap their operands.

llvm-svn: 32753

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

llvm-svn: 32750

llvm-svn: 32730

llvm-svn: 32729

code to handle instructions as well, so that we properly fold things like
X & undef -> 0.
This fixes Transforms/SCCP/2006-12-19-UndefBug.ll

llvm-svn: 32715

llvm-svn: 32709

llvm-svn: 32696

llvm-svn: 32695

delete some dead ones.

llvm-svn: 32694

llvm-svn: 32693

llvm-svn: 32692

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

llvm-svn: 32690

creation. These changes are still temporary but at least this pushes
knowledge of signedness out closer to where it can be determined properly
and allows signedness to be removed from VMCore.

llvm-svn: 32654

form so we can remove that method from ConstantExpr.

llvm-svn: 32652

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.

llvm-svn: 32636

zero arg vararg functions, pass undef instead of 'int 0', which is cheaper.

llvm-svn: 32634

llvm-svn: 32595

used to determine whether a ZExt or SExt cast is performed. Instead, pass
an "isSigned" bool to the function and determine its value from the opcode
of the cast involved.
Also, clean up some cruft from previous patches.

llvm-svn: 32548

cast instructions. A few are bug fixes.

llvm-svn: 32544

make sure to also check that it is a zext from bool, not any other cast
operation type.

llvm-svn: 32539

The cast patch introduced the possibility that the wrong cast opcode
could be used and that this transform could trigger on different kinds
of cast operations. This patch rectifies that.

llvm-svn: 32538

so the decision of which opcode to use is pushed upward to the caller.
Adjust the callers to pass the expected opcode.

llvm-svn: 32535

llvm-svn: 32534

obscure bugs affecting the X86 code generator.  I will reenable this
when fixed.

llvm-svn: 32524

creation calls.

llvm-svn: 32521

Rename getZeroExtend and getSignExtend to getZExt and getSExt to match
the the casting mnemonics in the rest of LLVM.

llvm-svn: 32514

llvm-svn: 32487

llvm-svn: 32486

llvm-svn: 32479