This will be used to replace things like X86's MOV32to32_.

Enhance ScheduleDAGSDNodesEmit to be more flexible and robust
in the presense of subregister superclasses and subclasses. It
can now cope with the definition of a virtual register being in
a subclass of a use.

Re-introduce the code for recording register superreg classes and
subreg classes. This is needed because when subreg extracts and
inserts get coalesced away, the virtual registers are left in
the correct subclass.

llvm-svn: 68961

ISD::SIGN_EXTEND_INREG. Tablegen-generated code can handle
these cases, and the scheduling issues observed earlier
appear to be resolved now.

llvm-svn: 68959

llvm-svn: 68958

a live interval. This is needed for some upcoming subreg changes.

llvm-svn: 68956

the subreg field to 0, since the subreg field is only used
for virtual register subregs. This doesn't change
current functionality; it just eliminates bogus noise from
debug output.

llvm-svn: 68955

llvm-svn: 68954

llvm-svn: 68953

llvm-svn: 68951

llvm-svn: 68950

This unbreaks the JIT on x86-64.

llvm-svn: 68948

llvm-svn: 68947

While passing arg of types larger than char only one byte at lower end was getting passed. We couldn't catch this as we did not have tests that were passing an int value larger than 256.

llvm-svn: 68946

declarations.

llvm-svn: 68944

to support C99 inline, GNU extern inline, etc.  Related bugzilla's
include PR3517, PR3100, & PR2933.  Nothing uses this yet, but it
appears to work.

llvm-svn: 68940

llvm-svn: 68939

interpreter mode" when it's not.

llvm-svn: 68937

patch by Alexei Svitkine!

llvm-svn: 68929

only if symbolic addresses are RIP relatives.

llvm-svn: 68924

llvm-svn: 68915

strncat :(

strncat(foo, "bar", 99)
would be optimized to
memcpy(foo+strlen(foo), "bar", 100, 1)
instead of
memcpy(foo+strlen(foo), "bar", 4, 1)"

Patch by Benjamin Kramer!

llvm-svn: 68905

See comment for details.  This fixes rdar://6772169

llvm-svn: 68890

copying into the right register, avoiding a copy.

llvm-svn: 68889

and make it return the assigned register.

llvm-svn: 68888

llvm-svn: 68887

hasImplicitDefOfPhysReg methods.  Use them to remove a 
look in X86 fast isel.

llvm-svn: 68886

code.  Patch by Benjamin Kramer!

llvm-svn: 68885

from the assembler:

Error: unknown pseudo-op: `.debug_inlined'
llvm-svn: 68863

Keep track of inlined functions and their locations. This information is collected when nested llvm.dbg.func.start intrinsics are seen. (Right now, inliner removes nested llvm.dbg.func.start intrinisics during inlining.) 

Create debug_inlined dwarf section using these information. This info is used by gdb, at least on Darwin, to enable better experience debugging inlined functions. See DwarfWriter.cpp for more information on structure of debug_inlined section.

llvm-svn: 68847

DebugLabelFolder ruthlessly deletes redundant labels. However, sometimes the redundant labels is referenced by debug info somewhere else. This patch provies a way so that dwarf writer can mark labels as used.

llvm-svn: 68813

No functional changes.

llvm-svn: 68808

1. Sinking would crash when the first instruction of a block was
   sunk due to iterator problems.
2. Instructions could be sunk to their current block, causing an
   infinite loop.

This fixes PR3968

llvm-svn: 68787

llvm-svn: 68786

llvm-svn: 68783

With this we generate

movl    %gs:0, %eax
leal    i@NTPOFF(%eax), %eax

instead of

movl    $i@NTPOFF, %eax
addl    %gs:0, %eax

llvm-svn: 68778

llvm::PointerType::get().  Patch by Anders Johnsen!

llvm-svn: 68772

It turns out that there are still several problems with this, will file a bugzilla.

llvm-svn: 68749

llvm-svn: 68747

llvm-svn: 68745

code that uses it by using SelectionDAG::getVTList instead.

llvm-svn: 68744

the key. This will cause it to create a new std::string, which isn't
wanted. Instead, pass back the "const char*". Modify the EmitString() method to
take a "const char*".

llvm-svn: 68741