We used to create children DIEs for a scope, then check whether ScopeDIE is
null. If ScopeDIE is null, the children DIEs will be dangling. Other DIEs can
link to those dangling DIEs, which are not emitted at all, causing dwarf error.

The current testing case is 4k lines, from MultiSource/BenchMark/McCat/09-vor.

rdar://problem/13071959

llvm-svn: 174084

Each target implementation was needlessly recomputing the index.
Part of rdar://13076458

llvm-svn: 174083

llvm-svn: 174080

llvm-svn: 174079

llvm-svn: 174078

llvm-svn: 174067

This patch adds support for AArch64 (ARM's 64-bit architecture) to
LLVM in the "experimental" category. Currently, it won't be built
unless requested explicitly.

This initial commit should have support for:
    + Assembly of all scalar (i.e. non-NEON, non-Crypto) instructions
      (except the late addition CRC instructions).
    + CodeGen features required for C++03 and C99.
    + Compilation for the "small" memory model: code+static data <
      4GB.
    + Absolute and position-independent code.
    + GNU-style (i.e. "__thread") TLS.
    + Debugging information.

The principal omission, currently, is performance tuning.

This patch excludes the NEON support also reviewed due to an outbreak of
batshit insanity in our legal department. That will be committed soon bringing
the changes to precisely what has been approved.

Further reviews would be gratefully received.

llvm-svn: 174054

This change adds MemorySanitizer annotations to BumpPtrAllocator to
improve report quality.

llvm-svn: 174051

llvm-svn: 174048

That function doesn't make sense anymore because there's only one attribute per
Attribute object now.

llvm-svn: 174044

It broke many hosts to crash.

llvm-svn: 174035

as well.

llvm-svn: 174030

llvm-svn: 174028

it isn't really an AliasAnalysis concept, and ValueTracking has similar things
that it could plausibly share code with some day.

llvm-svn: 174027

The Attribute::hasAttributes() is kind of meaningless since an Attribute can
have only one attribute. And we would rather people use the 'operator=='
instead of Attribute::hasAttribute().

llvm-svn: 174026

reference to a pointer, so that it can handle the case where DataLayout
is not available and behave conservatively.

llvm-svn: 174024

llvm-svn: 174023

--- Reverse-merging r174010 into '.':
U    include/llvm/IR/Attributes.h
U    lib/IR/Verifier.cpp
U    lib/IR/Attributes.cpp

llvm-svn: 174012

The AttrBuilder is there to build up multiple attributes. The Attribute class
represents only one attribute at a time. So remove this unnecessary builder
creator method.

llvm-svn: 174010

llvm-svn: 174009

register for inline asm. This conforms to how gcc allows for effective
casting of inputs into gprs (fprs is already handled).

llvm-svn: 174008

llvm-svn: 174005

Several places were still treating the Attribute object as respresenting
multiple attributes. Those places now use the AttributeSet to represent
multiple attributes.

llvm-svn: 174003

with an assert instead of failing and requiring callers to check for failure.

llvm-svn: 173998

for example, a one-past-the-end pointer from one global variable may
be equal to the base pointer of another global variable.

llvm-svn: 173995

On systems which support the QPX vector instructions, the stack must be
32-byte aligned.

llvm-svn: 173993

llvm-svn: 173992

There are still places which treat the Attribute object as a collection of
attributes. I'm systematically removing them.

llvm-svn: 173990

llvm-svn: 173987

This should have gone in with r173973.

llvm-svn: 173984

It was creating a new AttrBuilder when we could just fill in the AttrBuilder
we're building.

llvm-svn: 173975

This is the first commit of a large series which will add support for the
QPX vector instruction set to the PowerPC backend. This instruction set is
used on the IBM Blue Gene/Q supercomputers.

llvm-svn: 173973

llvm-svn: 173960

Given source IR:
call void @llvm.dbg.declare(metadata !{i32* %argc.addr}, metadata !14), !dbg !15
we used to generate 
call void @llvm.dbg.declare(metadata !27, metadata !28), !dbg !29
!27 = metadata !{null}

With this patch, we will correctly generate
call void @llvm.dbg.declare(metadata !{i32* %argc.addr}, metadata !27), !dbg !28

Looking up %argc.addr in ValueMap will return null, since %argc.addr is already
correctly set up, we can use identity mapping.

llvm-svn: 173946

More details in this thread: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20130128/163783.html

Patch by JF Bastien

llvm-svn: 173943

llvm-svn: 173941

llvm-svn: 173939

This is required to use them in TableGen.

llvm-svn: 173923

Attempt to fix dragonegg. Use the number of slots to determine if the AttributeSet has attributes or not.

llvm-svn: 173902

                          sext-not-and --> select.

Patch by Muhammad Tauqir Ahmad.

llvm-svn: 173901