instead of a bool argument, and to do the dominator check itself.
This makes it eaiser to use when DominatorTree information is
available.

llvm-svn: 80920

llvm-svn: 80871

re-commit r66920 (which has been backed out in r66953) I may have more luck this time. I'll back out if needed...

llvm-svn: 80858

callgraph.  This is now dead because RAUW does the job.

llvm-svn: 80703

for sanity.  This didn't turn up any bugs.

Change CallGraphNode to maintain its "callsite" information in the 
call edges list as a WeakVH instead of as an instruction*.  This fixes
a broad class of dangling pointer bugs, and makes CallGraph have a number
of useful invariants again.  This fixes the class of problem indicated
by PR4029 and PR3601.

llvm-svn: 80663

Use MDNodes to encode debug info in llvm IR.

llvm-svn: 80406

llvm-svn: 80205

a the list of static allocas that it inlined.

llvm-svn: 80203

llvm-svn: 80202

llvm-svn: 80201

and other code cleanups.  No functionality change.

llvm-svn: 80199

llvm-svn: 80073

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

llvm-svn: 80009

llvm-svn: 80007

llvm-svn: 80006

Update DebugInfo interface to use metadata, instead of special named llvm.dbg.... global variables, to encode debugging information in llvm IR. This is mostly a mechanical change that tests metadata support very well.

This change speeds up llvm-gcc by more then 6% at "-O0 -g" (measured by compiling InstructionCombining.cpp!)

llvm-svn: 79977

of an extracted block contains a PHI using a value defined in the extracted region.

With this patch, the partial inliner now passes MultiSource/Applications.

llvm-svn: 79963

When extracting SEME regions of code, the extractor needs to update the dominator tree for split return blocks.

llvm-svn: 79957

llvm-svn: 79849

update all code that this affects.

llvm-svn: 79830

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

llvm-svn: 79819

delete a newed pointer, and improve readability a little bit.

llvm-svn: 79411

llvm-svn: 79407

llvm-svn: 79263

llvm-svn: 79252

unfoldable references to a PHI node in the block being folded, and disable
the transformation in that case.  The correct transformation of such PHI
nodes depends on whether BB dominates Succ, and dominance is expensive 
to compute here.  (Alternatively, it's possible to check whether any 
uses are live, but that's also essentially a dominance calculation. 
Another alternative is to use reg2mem, but it probably isn't a good idea to
use that in simplifycfg.)

Also, remove some incorrect code from CanPropagatePredecessorsForPHIs 
which is made unnecessary with this patch: it didn't consider the case 
where a PHI node in BB has multiple uses.

llvm-svn: 79174

blocks.

llvm-svn: 79132

llvm-svn: 78955

llvm-svn: 78948

llvm-svn: 78809

llvm-svn: 78664

llvm-svn: 78363

Privatize the StructType table, which unfortunately involves routing contexts through a number of APIs.

llvm-svn: 78258

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

llvm-svn: 77721

llvm-svn: 77635

llvm-svn: 77605

a Twine, e.g., for names).
 - I am a little ambivalent about this; we don't want the string conversion of
   utostr, but using overload '+' mixed with string and integer arguments is
   sketchy. On the other hand, this particular usage is something of an idiom.

llvm-svn: 77579

llvm-svn: 77516