DIScope::getContext is a wrapper function that calls the specific getContext
method on each subclass. When we switch DIType::getContext to return DIScopeRef
instead of DIScope, DIScope::getContext can no longer return a DIScope without
a type identifier map.
    
DIScope::getContext is only used by DwarfDebug, so we move it to DwarfDebug
to have easy access to the type identifier map.

llvm-svn: 190330

The work on this project was left in an unfinished and inconsistent state.
Hopefully someone will eventually get a chance to implement this feature, but
in the meantime, it is better to put things back the way the were.  I have
left support in the bitcode reader to handle the case-range bitcode format,
so that we do not lose bitcode compatibility with the llvm 3.3 release.

This reverts the following commits: 155464, 156374, 156377, 156613, 156704,
156757, 156804 156808, 156985, 157046, 157112, 157183, 157315, 157384, 157575,
157576, 157586, 157612, 157810, 157814, 157815, 157880, 157881, 157882, 157884,
157887, 157901, 158979, 157987, 157989, 158986, 158997, 159076, 159101, 159100,
159200, 159201, 159207, 159527, 159532, 159540, 159583, 159618, 159658, 159659,
159660, 159661, 159703, 159704, 160076, 167356, 172025, 186736

llvm-svn: 190328

This helper function needs the type identifier map when we switch
DIType::getContext to return DIScopeRef instead of DIScope.

Since isSubprogramContext is used by DwarfDebug only, We move it to DwarfDebug
to have easy access to the map.

llvm-svn: 190325

A reference to a scope is more general than a reference to a type since
DIType is a subclass of DIScope.

A reference to a type can be either an identifier for the type or
the DIType itself, while a reference to a scope can be either an
identifier for the type (when the scope is indeed a type) or the
DIScope itself. A reference to a type and a reference to a scope
will be resolved in the same way. The only difference is in the
verifier when a field is a reference to a type (i.e. the containing
type field of a DICompositeType) or a field is a reference to a scope
(i.e. the context field of a DIType).

This is to get ready for switching DIType::getContext to return
DIScopeRef instead of DIScope.

Tighten up isTypeRef and isScopeRef to make sure the identifier is not
empty and the MDNode is DIType for TypeRef and DIScope for ScopeRef.

llvm-svn: 190322

TAG_file_type is also a scope.

llvm-svn: 190321

stores, make sure the load or store that accesses the higher half does not have
an alignment that is larger than the offset from the original address.

llvm-svn: 190318

llvm-svn: 190317

IT blocks can only be one instruction lonf, and can only contain a subset of
the 16 instructions.

Patch by Artyom Skrobov!

llvm-svn: 190309

llvm-svn: 190308

llvm-svn: 190304

Fix XCoreLowerThreadLocal trying to initialise globals
which have no initializer.

Add handling of const expressions containing thread local variables.
These need to be replaced with instructions, as the thread ID is
used to access the thread local variable.

llvm-svn: 190300

This sidesteps a bug in PrescheduleNodesWithMultipleUses() which
does not check if callResources will be affected by the transformation.

llvm-svn: 190299

llvm-svn: 190298

We used to generate the compact unwind encoding from the machine
instructions. However, this had the problem that if the user used `-save-temps'
or compiled their hand-written `.s' file (with CFI directives), we wouldn't
generate the compact unwind encoding.

Move the algorithm that generates the compact unwind encoding into the
MCAsmBackend. This way we can generate the encoding whether the code is from a
`.ll' or `.s' file.

<rdar://problem/13623355>

llvm-svn: 190290

SADDL, UADDL, SADDW, UADDW, SSUBL, USUBL, SSUBW, USUBW, ADDHN, RADDHN, SABAL, UABAL, SUBHN, RSUBHN, SABDL, UABDL, SMLAL, UMLAL, SMLSL, UMLSL, SQDMLAL, SQDMLSL, SMULL, UMULL, SQDMULL, PMULL

llvm-svn: 190288

llvm-svn: 190271

For context field of subroutine_type and when creating artificial types.

llvm-svn: 190270

Improve readability. No functionality change.

llvm-svn: 190269

llvm-svn: 190259

llvm-svn: 190258

precision loads and stores as well as reg+imm double precision loads and stores.

Previously, expansion of loads and stores was done after register allocation,
but now it takes place during legalization. As a result, users will see double
precision stores and loads being emitted to spill and restore 64-bit FP registers.

llvm-svn: 190235

llvm-svn: 190234

functions marked 'nobuiltin'. That approach doesn't play well with LTO, and
there's no harm in marking a call as 'builtin' if it was going to be a builtin
regardless.

llvm-svn: 190233

llvm-svn: 190232

a DISubprogram.
    
Verifier is updated accordingly.

llvm-svn: 190229

into a 5-bit or 6-bit field.

llvm-svn: 190226

Remove one cast and improve readability. No functionality change.

llvm-svn: 190225

llvm-svn: 190224

llvm-svn: 190221

equivalent to "beq $zero, $zero, offset".

llvm-svn: 190220

llvm-svn: 190219

instead of having its own implementation.

The implementation of isTBAAVtableAccess is in TypeBasedAliasAnalysis.cpp
since it is related to the format of TBAA metadata.

The path for struct-path tbaa will be exercised by
test/Instrumentation/ThreadSanitizer/read_from_global.ll, vptr_read.ll, and
vptr_update.ll when struct-path tbaa is on by default.

llvm-svn: 190216

Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 190200

a DICompositeType.
    
Verifier is updated accordingly.

llvm-svn: 190190

of DIType.
    
Implement DIType::generateRef to return a type reference. This function will be
used in setContaintingType and in DIBuilder to generete the type reference.
    
No functionality change.

llvm-svn: 190188

llvm-svn: 190181

llvm-svn: 190180

llvm-svn: 190179

llvm-svn: 190178

The latency based scheduling could induce spills in some cases.

llvm-svn: 190177