We should use CHECK-NOT instead.

llvm-svn: 275700

No functional change, just some cleanups:
- Use auto when it is appropriate.
- There were some strange static_casts which were superfluous.
- Use range-based for loops when appropriate.
- The dyn_cast_or_null construct was used when null was impossible.

llvm-svn: 275699

Summary: Convert IVUsers analysis to new pass manager.

Reviewers: davidxl, silvas

Subscribers: junbuml, sanjoy, llvm-commits, mzolotukhin

Differential Revision: https://reviews.llvm.org/D22434

llvm-svn: 275698

Rather than building up a number of SmallString-s in order to construct a
std::string, use more StringRefs and construct the string once before use.  This
avoids unnecessary string constructions.  NFC.

llvm-svn: 275697

Add a couple of local variables for the class interface and the super class
interface.  This allows for the repeated access of the information to be cached
and makes the code simpler to understand.  NFC.

llvm-svn: 275696

llvm-svn: 275695

llvm-svn: 275694

llvm-svn: 275693

llvm-svn: 275692

llvm-svn: 275691

llvm-svn: 275690

llvm-svn: 275689

llvm-svn: 275688

llvm-svn: 275687

llvm-svn: 275686

llvm-svn: 275685

This is a partial implementation of a general fold for associative+commutative operators:
(op (cast (op X, C2)), C1) --> (cast (op X, op (C1, C2)))
(op (cast (op X, C2)), C1) --> (op (cast X), op (C1, C2))

There are 7 associative operators and 13 cast types, so this could potentially go a lot further.

Differential Revision: https://reviews.llvm.org/D22421

llvm-svn: 275684

I think 
# REQUIRES: shell 
is required instead of 
# XFAIL: win32

llvm-svn: 275683

BSD toolchain contains a bug:
https://sourceforge.net/p/elftoolchain/tickets/491/

In short demangler works differently, fix was to update the testcase.
It should fix the FreeBSD bot failture:
http://lab.llvm.org:8011/builders/lld-x86_64-freebsd/builds/19432/steps/test_lld/logs/stdio

Original commit message was:
[ELF] - Implement extern "c++" version script tag

Patch implements 'extern' version script tag.
Currently only values in quotes(") are supported.

Matching of externs is performed in the same pass as exact match of globals.

Differential revision: http://reviews.llvm.org/D21930

llvm-svn: 275682

Few tests introduced by previous patch had obsolete counterparts.

Applied fixes to {Dynamic|Static}CastExpr.cpp

llvm-svn: 275681

This ensures that accidental calls to these functions will break loadly instead
of corrupting the stack with invalid return values.

These functions have been introduced earlier as replacement of pet and parts of
ppcg which we will never use and consequently have not been imported or compiled
into Polly.

llvm-svn: 275680

Revert "Revert r275029 - Update Clang tests after adding inference for the returned argument attribute"

This reverts commit r275043 after reapplying the underlying LLVM commit.

llvm-svn: 275679

This reverts commit r275042; the initial commit triggered self-hosting failures
on ARM/AArch64. James Molloy identified the problematic backend code, which has
been disabled in r275677. Trying again...

Original commit message:

Let FuncAttrs infer the 'returned' argument attribute

A function can have one argument with the 'returned' attribute, indicating that
the associated argument is always the return value of the function. Add
FuncAttrs inference logic.

llvm-svn: 275678

r275042 reverted function-attribute inference for the 'returned' attribute
because the feature triggered self-hosting failures on ARM and AArch64. James
Molloy determined that the this-return argument forwarding feature, which
directly ties the returned input argument to the returned value, was the cause.
It seems likely that this forwarding code contains, or triggers, a subtle bug.
Disabling for now until we can track that down.

llvm-svn: 275677

Attempting to fix lit test failure on ppc.

llvm-svn: 275676

llvm-svn: 275675

SymbolVersions sounds like it had versions for a symbol, so rename it.

llvm-svn: 275674

The identifier `Version` was used too often in the code to handle
symbol versions. The struct that contains version definitions is
named `Version`. Local variables for version ID are named `Version`.
Local varaible for version string are named `Version`.

This patch give them different names.

llvm-svn: 275673

skip(S) consumes a token if the next token is S,
so it can be used instead of peek() & next().

llvm-svn: 275672

[AVX512] Remove CodeGenOnly VBROADCAST m_Int instructions. They can be implemented with patterns selecting existing instructions. NFC

llvm-svn: 275671

llvm-svn: 275670

llvm-svn: 275669

The flags:
Enable IR-level instrumentation -fprofile-generate or -fprofile-generate=
When applying profile data: -fprofile-use=/path/to/profdata

Patch by Jake VanAdrighem!

Differential Revision: https://reviews.llvm.org/D21823

llvm-svn: 275668

llvm-svn: 275667

llvm-svn: 275666

Previously, Verdefs and Verdauxs are separated in the section.
The new layout is easier to write as we do not have to maintain
two pointers and can avoid passing a reference to a pointer.

llvm-svn: 275665

This does not schedule any passes besides the ones necessary to
construct and print the machine function. This is useful to test .mir
file reading and printing.

Differential Revision: http://reviews.llvm.org/D22432

llvm-svn: 275664

llvm-svn: 275663

test/CodeGen/MIR/ARM/ARMLoadStoreDBG.mir is an actual test for the ARM
load store optimization pass and not a test of the mir parser/printer.

It belongs to test/CodeGen/ARM; This also updates the test to use the
new -run-pass llc syntax.

llvm-svn: 275662

Initializing them in LLVMInitializeARMTarget() makes them visible early
enough for "llc -run-pass usage".

This required the pass to be renamed from "arm-load-store-opt" to
"arm-ldst-opt", because there already exists an arm-load-store-opt
cl::opt switch which would now clash with the passname getting added as
a switch in opt. On the bright side the pass name now matches the
DEBUG_TYPE name. Renamed "arm-prera-load-store-opt" to
"arm-repra-ldst-opt" as well for consistency.

llvm-svn: 275661