registers. The scheduler is now responsible for emitting them.

llvm-svn: 41781

for each function.  This was the behavior prior to the following patch:

http://llvm.org/viewvc/llvm-project?view=rev&revision=41779

llvm-svn: 41780

"CFGVisitor", which now handles all the boilerplate for iterating over
the function definitions in a translation unit and building the CFGs.
This logic was previously replicated for each driver option that used
CFGs.

The options -dump-cfg, -view-cfg, -check-dead-stores, and
-dump-live-variables now use this refactored code.

llvm-svn: 41779

llvm-svn: 41776

by flagging the associated instructions as being trivially rematerializable.

llvm-svn: 41775

llvm-svn: 41774

llvm-svn: 41769

The x86-64 ABI states that objects passed on the stack have
8 byte alignment. Implement that.

llvm-svn: 41768

Silenced a couple of warnings.
Added *.vcproj file for new clangAnalysis library.
Renamed Basic to clangBasic projects.

llvm-svn: 41767

Split eh.select / eh.typeid.for intrinsics into i32/i64 versions. This is needed, because they just "mark" register 
liveins and we let frontend solve type issue, not lowering code :)

llvm-svn: 41763

llvm-svn: 41762

llvm-svn: 41759

Patch by Sterling Stein!

llvm-svn: 41758

but never used.

Fix a bug in LiveVariables where uses on the LHS of self-assign
operators (e.g +=, *=, etc) would not be properly recorded in the
liveness state of the variable.

llvm-svn: 41757

that contained no declarations, or when a variable is declared but never used.

llvm-svn: 41756

llvm-svn: 41755

to variables that are no longer live.  This analysis is built on top
of CFGs and the LiveVariables analysis.

changes to driver:
 added driver option "-check-dead-stores" to run the analysis

llvm-svn: 41754

 - Finished 99% of analysis logic.  Probably a few bugs.
 - Added querying functions to query liveness.
 - Added better pretty printing of liveness.
 - Added better bookkeeping of per-variable liveness information.
 - Added LiveVariablesAuditor interface, which allows "lazy" querying
   of intra-basic block liveness information.

Driver:
 - Minor cleanups involved in dumping liveness information.

llvm-svn: 41753

The goal of this commit is to get just enough Sema support to recognize Objective-C classes
as types. That said, the AST nodes ObjcInterfaceDecl, ObjcInterfaceType, and ObjcClassDecl are *very*
preliminary.

The good news is we no longer need -parse-noop (aka MinimalActions) to parse cocoa.m.

llvm-svn: 41752

Constify to catch bugs.

llvm-svn: 41751

Use APFloat in UpgradeParser and AsmParser.
Change all references to ConstantFP to use the
APFloat interface rather than double.  Remove
the ConstantFP double interfaces.
Use APFloat functions for constant folding arithmetic
and comparisons.
(There are still way too many places APFloat is
just a wrapper around host float/double, but we're
getting there.)

llvm-svn: 41747

Also, fix a case, when target doesn't have weak symbols supported.

llvm-svn: 41746

in the actual GotoStmt.

Fixed bug where GotoStmt::getSourceRange incorrectly used the target LabelStmt
to compute its extent.

llvm-svn: 41745

Add instruction dump output.  This helps find bugs.

llvm-svn: 41744

Pluggable coalescers inplementation.

llvm-svn: 41743

llvm-svn: 41742

llvm-svn: 41741

that would make the icmp true. Fixes PR1637.

llvm-svn: 41740

llvm-svn: 41739

source-level CFGs.  This code may change significantly in the near
future as we explore different means to implement dataflow analyses.

Added a driver option, -dump-live-variables, to view the output of
live variable analysis.  This output is very ALPHA; it will be improved shortly.

llvm-svn: 41737

llvm-svn: 41736

leal    (,%rcx,8), %rcx
It should be
leal    (,%rcx,8), %ecx

llvm-svn: 41735

llvm-svn: 41734

llvm-svn: 41733

Start implementing Actions interface for ObjC classes, instance variables, and methods.

Lot's of small changes to the parser.

llvm-svn: 41732

llvm-svn: 41731

llvm-svn: 41730

Use pool allocator for all the VNInfo's to improve memory access locality. This reduces coalescing time on siod Mac OS X PPC by 35%. Also remove the back ptr from VNInfo to LiveInterval and other tweaks.

llvm-svn: 41729

Added Reset() to free all allocated memory regions and reset state to be the same as right after ctor.

llvm-svn: 41728

llvm-svn: 41727