the optimizers about this.  For example, a readonly
function with no uses cannot be removed unless it is
also marked nounwind.

llvm-svn: 71071

llvm-svn: 67287

If "optimize for size" attribute is set then block non-trivial loop unswitches but allow trivial loop unswitches.

llvm-svn: 63670

llvm-svn: 63198

llvm-svn: 60701

llvm-svn: 60337

llvm-svn: 58631

LoopPass*.
 - Although less precise, this means they can be used in clients
   without RTTI (who would otherwise need to include LoopPass.h, which
   eventually includes things using dynamic_cast). This was the
   simplest solution that presented itself, but I am happy to use a
   better one if available.

llvm-svn: 58010

llvm-svn: 57660

llvm-svn: 56716

s/ParamAttr/Attribute/g
s/PAList/AttrList/g
s/FnAttributeWithIndex/AttributeWithIndex/g
s/FnAttr/Attribute/g

This sets the stage 
- to implement function notes as function attributes and 
- to distinguish between function attributes and return value attributes.

This requires corresponding changes in llvm-gcc and clang.

llvm-svn: 56622

llvm-svn: 56527

Do not check isDeclaration() in hasNote(). It is clients' responsibility.

llvm-svn: 56524

Function Notes also. Function notes are stored at index ~0.

llvm-svn: 56511

llvm-svn: 56477

llvm-svn: 55806

llvm-svn: 55792

llvm-svn: 55786

llvm-svn: 55779

Do not try to update dominator info while manipulating CFG.  This code does not handle all cases and keeps invalid dom info around some cases, which misleads other passes down stream.

Right now, dom info is recaluclated in the end if the loop is switched.

llvm-svn: 53106

llvm-svn: 53090

llvm-svn: 53087

llvm-svn: 53086

llvm-svn: 53085

llvm-svn: 53062

llvm-svn: 53052

llvm-svn: 53007

llvm-svn: 53006

Keep track of currentLoop.

llvm-svn: 53005

llvm-svn: 52438

llvm-svn: 51887

use it instead of duplicating its functionality.

llvm-svn: 51499

several things that were neither in an anonymous namespace nor static
but not intended to be global.

llvm-svn: 51017

llvm-svn: 50696

r48047 r48084 r48085 r48086 r48088 r48096 r48099 r48109 and r48123.

llvm-svn: 50265

llvm-svn: 50016

Specifically, introduction of XXX::Create methods
for Users that have a potentially variable number of
Uses.

llvm-svn: 49277

and also update the cloning interface's major user, the loop optimizations.

llvm-svn: 48088

llvm-svn: 45418

Get rid of annoying spaces.

llvm-svn: 45100