loop idiom pass exposed.

llvm-svn: 122674

llvm-svn: 122672

llvm-svn: 122671

llvm-svn: 122670

llvm-svn: 122669

llvm-svn: 122668

llvm-svn: 122667

llvm-svn: 122666

llvm-svn: 122665

limitations, this kicks in dozens of times in the 4 specfp2000 benchmarks, 
and hundreds of times in the int part.  It also kicks in hundreds of times 
in multisource.

This kicks in right before loop deletion, which has the pleasant effect of
deleting loops that *just* do a memset.

llvm-svn: 122664

earlyclobber stuff. This should fix PRs 2313 and 8157.

Unfortunately, no testcase, since it'd be dependent on register
assignments.

llvm-svn: 122663

new testcase.

llvm-svn: 122662

is the wrong hammer for this nail, and is probably right.

llvm-svn: 122661

aggressively.  In practice, this doesn't help anything though,
see the todo.

llvm-svn: 122660

should be correct now.

llvm-svn: 122659

llvm-svn: 122658

even compile, let alone work.

llvm-svn: 122657

using a separate objects directory.

llvm-svn: 122656

not locally.

llvm-svn: 122655

numbering, in which it considers (for example) "%a = add i32 %x, %y" and
"%b = add i32 %x, %y" to be equal because the operands are equal and the
result of the instructions only depends on the values of the operands.
This has almost no effect (it removes 4 instructions from gcc-as-one-file),
and perhaps slows down compilation: I measured a 0.4% slowdown on the large
gcc-as-one-file testcase, but it wasn't statistically significant.

llvm-svn: 122654

llvm-svn: 122653

llvm-svn: 122652

llvm-svn: 122651

llvm-svn: 122650

is necessary for executing the custom command that runs the
assember. Fixes PR8877.

llvm-svn: 122649

options. If we are building with exceptions/rtti disabled, we replace
/EHsc with /EHs-c- and /GR with /GR-, respectively. If we just add the
disabling options we get warnings like this:

cl : Command line warning D9025 : overriding '/EHs' with '/EHs-'

llvm-svn: 122648

operands are visited before the instructions themselves.

llvm-svn: 122647

open them in fundamental-mode instead of c++-mode.
Also twiddle whitespace for consistency in ToolChains.cpp.

llvm-svn: 122646

llvm-svn: 122645

MSVC doesn't require an accessible copy-constructor when binding a temporary class object to a const-reference.
Note: this is not a C++0x behavior change, it was already like that in MSVC 2003.

This fixes a compile error when parsing MSVC header files with clang.

llvm-svn: 122644

in asm statements:

register int foo asm("rdi");

asm("..." : ... "r" (foo) ...

We also only accept these variables if the constraint in the asm statement is "r".

This fixes most of PR3933.

llvm-svn: 122643

llvm-svn: 122642

Fixes PR8861.

llvm-svn: 122641

llvm-svn: 122640

Expose Objective-C type encodings of declarations to libclang users.  This also adds a method in ASTContext which encodes FunctionDecls using the same encoding format that is used for Objective-C methods.  

llvm-svn: 122639

llvm-svn: 122638

llvm-svn: 122637

llvm-svn: 122636

with 2-address instructions, for about a 3.5% speedup of StrongPHIElimination on
403.gcc.

llvm-svn: 122635

llvm-svn: 122634