of the "self"/"this" pointer for the current stack
frame before wrapping expressions in C++ or
Objective-C methods.  This works around bad debug
info where the compiler emits a "this" or "self"
but doesn't give any way to find its location.

<rdar://problem/12809985>

llvm-svn: 169461

rdar://12821569

llvm-svn: 169460

and extload's. If they are implemented as zero-extend, or implicitly
zero-extend, then this can enable more demanded bits optimizations. e.g.

define void @foo(i16* %ptr, i32 %a) nounwind {
entry:
  %tmp1 = icmp ult i32 %a, 100
  br i1 %tmp1, label %bb1, label %bb2
bb1:
  %tmp2 = load i16* %ptr, align 2
  br label %bb2
bb2:
  %tmp3 = phi i16 [ 0, %entry ], [ %tmp2, %bb1 ]
  %cmp = icmp ult i16 %tmp3, 24
  br i1 %cmp, label %bb3, label %exit
bb3:
  call void @bar() nounwind
  br label %exit
exit:
  ret void
}

This compiles to the followings before:
        push    {lr}
        mov     r2, #0
        cmp     r1, #99
        bhi     LBB0_2
@ BB#1:                                 @ %bb1
        ldrh    r2, [r0]
LBB0_2:                                 @ %bb2
        uxth    r0, r2
        cmp     r0, #23
        bhi     LBB0_4
@ BB#3:                                 @ %bb3
        bl      _bar
LBB0_4:                                 @ %exit
        pop     {lr}
        bx      lr

The uxth is not needed since ldrh implicitly zero-extend the high bits. With
this change it's eliminated.

rdar://12771555

llvm-svn: 169459

llvm-svn: 169458

<declaration> XML tag. // rdar://12378714

llvm-svn: 169457

change MCContext to work on the doInitialization/doFinalization model

reviewed by Evan Cheng <evan.cheng@apple.com>

llvm-svn: 169456

llvm-svn: 169455

llvm-svn: 169454

<declaration> tag of Comment XML  and fixing 
DeclPrint of templates along the way - wip. 
//rdar://12378714

llvm-svn: 169453

llvm-svn: 169452

- Removed the BitfieldMap class because it is unnecessary.
  We now just track the most recently added field.

- Moved the code that calculates bitfield widths so it
  can also be used to determine whether it's necessary
  to insert anonymous fields.

- Simplified the anonymous field calculation code into
  three cases (two of which are resolved identically).

- Beefed up the bitfield testcase.

llvm-svn: 169449

the AsmBlocks language extension as well.
rdar://12808010

llvm-svn: 169448

Evan nominated me for this a while back, and no one has offered to
save me from it.

llvm-svn: 169447

llvm-svn: 169446

option.  MS-style inline asm can now be enabled by either -fasm-blocks or
-fms-extensions.
rdar://12808010

llvm-svn: 169445

for target logging.

llvm-svn: 169444

llvm-svn: 169443

Looks like lit on Windows can't cope with parens here, and in any case, we shouldn't need them after r169441.

llvm-svn: 169442

  RUN: a
  RUN: b || true

as "a && (b || true)" in Tcl mode, and as "(a && b) || true" in sh mode.
Everyone seems to (quite reasonably) write tests assuming the Tcl behavior,
so use that in sh mode too.

llvm-svn: 169441

in constructors.

llvm-svn: 169440

MF_READ and MF_WRITE are set.

llvm-svn: 169439

Quick build fix for c++03 clang. This needs a proper solution. Note that these offsets are guaranteed to be correct by Endian.h.

llvm-svn: 169438

llvm-svn: 169437

constructors.

llvm-svn: 169435

RUN: a
RUN: b || true

lit expands it to a && b || true, and the || true applies to both commands (thus ignoring failures in 'a')! This is PR10867 again.

llvm-svn: 169434

This is more consistent with other vectors in this code. In addition, I ran some
tests compiling a large program and >96% of fragments have 4 or less fixups, so
SmallVector<4> is a good optimization.

llvm-svn: 169433

using multiclass.

llvm-svn: 169432

Fixed arrays with a size of 1 to correctly have 1 member when DW_AT_upper_bound was set to zero and no other attributes were set.

llvm-svn: 169431

and does an '-index-file' for all compile commands in the database.

llvm-svn: 169430

llvm-svn: 169429

llvm-svn: 169428

llvm-svn: 169427

Now that live register units are tracked individually, the code can be simplified.

llvm-svn: 169426

This is much simpler to reason about, more efficient, and
fixes some corner cases involving implicit super-register defs.
Fixed rdar://12797931.

llvm-svn: 169425

Always allows getting builtin types by name even if there is no backing debug information.

llvm-svn: 169424

llvm-svn: 169423

-fasm-blocks flag, not the -fms-extensions flag.
rdar://12808010

llvm-svn: 169422

File contains installation and usage instructions.

llvm-svn: 169421

The encoding of NOP in ARMAsmBackend.cpp is missing a trailing zero, which
causes the emission of a coprocessor instruction rather than "mov r0, r0"
as indicated in the comment.  The test also checks for the wrong encoding.

http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20121203/157919.html

llvm-svn: 169420

llvm-svn: 169419