constructors.

llvm-svn: 80049

and introduce a new Instruction::isIdenticalTo which tests for full
identity, including the SubclassOptionalData flags. Also, fix the
Instruction::clone implementations to preserve the SubclassOptionalData
flags. Finally, teach several optimizations how to handle
SubclassOptionalData correctly, given these changes.

This fixes the counterintuitive behavior of isIdenticalTo not comparing
the full value, and clone not returning an identical clone, as well as
some subtle bugs that could be caused by these.

Thanks to Nick Lewycky for reporting this, and for an initial patch!

llvm-svn: 80038

sinking code, since they are special. If the loop preheader happens
to be the entry block of a function, don't sink static allocas
out of it. This fixes PR4775.

llvm-svn: 80010

llvm-svn: 79852

llvm-svn: 79834

llvm-svn: 79832

This also updates dominator related stuff.

llvm-svn: 79825

llvm-svn: 79823

This required converting a bunch of stuff off DOUT and other cleanups.

llvm-svn: 79819

and hasNoSignedWrap, for consistency with the nuw and nsw properties.

llvm-svn: 79539

llvm-svn: 79493

available. This is very conservative for now.

llvm-svn: 79442

before performing optimizations based on constant string values.

llvm-svn: 79384

llvm-svn: 79306

llvm-svn: 79298

that Value's operator<< doesn't include one.

llvm-svn: 79240

llvm-svn: 79226

llvm-svn: 79134

llvm-svn: 78948

the new load by the old load instead of by the extract element because
a store could have occurred between the load and extract element.

llvm-svn: 78891

llvm-svn: 78889

No intended functionality change.

llvm-svn: 78888

llvm-svn: 78887

llvm-svn: 78886

llvm-svn: 78812

llvm-svn: 78811

not appending its own newline.

llvm-svn: 78810

llvm-svn: 78809

llvm-svn: 78808

Add contexts to some of the MVT APIs.  No functionality change yet, just the infrastructure work needed to get the contexts to where they need to be first.

llvm-svn: 78759

llvm-svn: 78714

llvm-svn: 78610

 - Part of optimal static profiling patch sequence by Andreas Neustifter.

 - Store edge, block, and function information separately for each functions
   (instead of in one giant map).

 - Return frequencies as double instead of int, and use a sentinel value for
   missing information.

llvm-svn: 78477

Patch by Jakub Staszak.

llvm-svn: 78388

matches what the comment says, and it avoids spurious BitCast
instructions for Argument values.

llvm-svn: 78121

few places in InstCombine to use it, to fix problems handling pointer
types. This fixes the recent llvm-gcc bootstrap error.

llvm-svn: 78005

appropriate.  Patch per report on llvmdev.  No testcase because the 
original report didn't come with a testcase, and I can't come up with a case
that actually fails.

llvm-svn: 77986

metadata related, which I'm waiting on to avoid conflicting with Devang.

llvm-svn: 77721

a trailing newline.

llvm-svn: 77719

llvm-svn: 77716