llvm-svn: 254740

llvm-svn: 254739

llvm-svn: 254738

This commit adds a new target-independent calling convention for C++ TLS
access functions. It aims to minimize overhead in the caller by perserving as
many registers as possible.

The target-specific implementation for X86-64 is defined as following:
  Arguments are passed as for the default C calling convention
  The same applies for the return value(s)
  The callee preserves all GPRs - except RAX and RDI

The access function makes C-style TLS function calls in the entry and exit
block, C-style TLS functions save a lot more registers than normal calls.
The added calling convention ties into the existing implementation of the
C-style TLS functions, so we can't simply use existing calling conventions
such as preserve_mostcc.

rdar://9001553

llvm-svn: 254737

llvm-svn: 254736

llvm-svn: 254735

llvm-svn: 254734

Summary:
Create a separate page describing UBSan tool, move the description of
fine-grained checks there, provide extra information about supported
platforms, symbolization etc. This text is compiled from four parts:

* Existing documentation copied from User's Manual
* Layout used in documentation for another sanitizers (ASan, MSan etc.)
* Text written from scratch
* Small parts taken from Michael Morrison's attempt at creating UBSan
  page:
  http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20141215/249503.html

Reviewers: kcc, rsmith, silvas

Subscribers: tberghammer, danalbert, srhines, kcc

Differential Revision: http://reviews.llvm.org/D15217

llvm-svn: 254733

llvm-svn: 254732

llvm-svn: 254731

llvm-svn: 254730

llvm-svn: 254729

llvm-svn: 254728

llvm-svn: 254727

llvm-svn: 254726

llvm-svn: 254725

llvm-svn: 254724

llvm-svn: 254723

mac_ignore_invalid_free was helpful when ASan runtime used to intercept
CFAllocator and sometimes corrupted its memory. This behavior had been long
gone, and the flag was unused.
This patch also deletes ReportMacCfReallocUnknown(), which was used by the
CFAllocator realloc() wrapper.

llvm-svn: 254722

This is a continuation of r253367.

These functions return is owned by the caller, so they return
std::unique_ptr now.

The call can fail, so the return is wrapped in ErrorOr.

They have a context where to report diagnostics, so they don't need to
take a string out parameter.

With this there are no call to getGlobalContext in lib/LTO.

llvm-svn: 254721

There's a more comprehensive ACLE and a real v8 ARM ARM now.

llvm-svn: 254720

llvm-svn: 254719

Differential Revision: http://reviews.llvm.org/D15007

llvm-svn: 254718

The build and test actually work now, so let's just enable them.

Differential Revision: http://reviews.llvm.org/D15184

llvm-svn: 254716

* Add support for representing signed integers
* Add new constructors taking any signed or unsigned integer types

Differential revision: http://reviews.llvm.org/D15187

llvm-svn: 254715

Since BuildMI() automatically adds the implicit operands for a new instruction,
adding the old instructions CC operand resulted in that there were two CC imp-def
operands, where only one was marked as dead. This caused buildSchedGraph() to
miss dependencies on the CC reg.

Review by Ulrich Weigand

llvm-svn: 254714

"Ulrich Drepper, ELF Handling For Thread-Local Storage" (5.5 x86-x64 linker optimizations, http://www.akkadia.org/drepper/tls.pdf) shows how GD can be optimized to IE.
This patch implements the optimization.

Differential revision: http://reviews.llvm.org/D15000

llvm-svn: 254713

LEA code size optimization pass (Part 1): Remove redundant address recalculations, by Andrey Turetsky

Add new x86 pass which replaces address calculations in load or store instructions with def register of existing LEA (must be in the same basic block), if the LEA calculates address that differs only by a displacement. Works only with -Os or -Oz.
Differential Revision: http://reviews.llvm.org/D13294

llvm-svn: 254712

Patch by Nitesh Jain

Reviewers: clayborg, ovyalov.
Subscribers: jaydeep, bhushan, mohit.bhakkad, sagar.
Differential Revision: http://reviews.llvm.org/D15103

llvm-svn: 254711

    SUMMARY:
    Marked TestCrashDuringStep.py as XFAIL for MIPS. The test generates IO error due to breakpoint at invalid address.
    
    Reviewers: clayborg, labath
    Subscribers: nitesh.jain, mohit.bhakkad, sagar, bhushan and lldb-commits
    Differential Revision: http://reviews.llvm.org/D15182

llvm-svn: 254710

This check has nothing to do with the statistical profiling extension, so
shouldn't be in this test.

llvm-svn: 254709

Patch by Max Ostapenko.

Differential Revision: http://reviews.llvm.org/D15108

llvm-svn: 254708

For PowerPC64 we cannot just pass SP extracted from @llvm.stackrestore to
_asan_allocas_unpoison due to specific ABI requirements
(http://refspecs.linuxfoundation.org/ELF/ppc64/PPC-elf64abi.html#DYNAM-STACK).
This patch adds the value returned by @llvm.get.dynamic.area.offset to
extracted from @llvm.stackrestore stack pointer, so dynamic allocas unpoisoning
stuff would work correctly on PowerPC64.

Patch by Max Ostapenko.

Differential Revision: http://reviews.llvm.org/D15108

llvm-svn: 254707

This update brings in improvements to isl's 'isolate' option that reduce the
number of code versions generated. This results in both code-size and compile
time reduction for outer loop vectorization.

Thanks to Roman Garev and Sven Verdoolaege for working on this improvement.

llvm-svn: 254706

and -no-integrated-as for source with static function.

The compiler generates assembly names containing \" in the
.s dump causing gnu assembler to complain. That issue will be
investigated separately. 

llvm-svn: 254705

llvm-svn: 254704

llvm-svn: 254703

clang converts C++ lambdas to blocks with an implicit user-defined conversion
operator method on the lambda record. This method returns a block that captures a copy
of the lambda. To inline a lambda-converted block, the analyzer now calls the lambda
records's call operator method on the lambda captured by the block.

llvm-svn: 254702

cmp&swap is not well supported -- the new test
case triggers some assembler error.

This is a partial fix to the general problem (lack
of atomics operation support for certain targets).

llvm-svn: 254701

This reverts commit r254694.

It broke bootstrap.

llvm-svn: 254700