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

to treat as an ICE results in undefined behavior. Instead, return the "natural"
result of the operation (signed wraparound / inf / nan).

llvm-svn: 254699

"Stepping out from a.out`bar at a.c:3returning to frame"

llvm-svn: 254698

llvm-svn: 254697

llvm-svn: 254696

llvm-svn: 254695

Summary:
If we remove the MMOs from Load/Store instructions,
they are treated as volatile. This makes other optimization passes unhappy.
eg. Load/Store Optimization

So, it looks better to merge, not remove.

Reviewers: gberry, mcrosier

Subscribers: gberry, llvm-commits

Differential Revision: http://reviews.llvm.org/D14797

llvm-svn: 254694

This class is turning into a useful interface, rather than an implementation
detail, so I'm dropping the 'Base' suffix.

No functional change.

llvm-svn: 254693

llvm-svn: 254692

Mark functions and types with the appropriate visibility.  This is particularly
useful for environments which explicitly indicate origin of functions (Windows).
This aids in generating libc++abi as a DSO which exposes only the public
interfaces.

llvm-svn: 254691

Cleanup some code with clang-format to make the following change easier to
identify material difference.  NFC.

llvm-svn: 254690

Cleans up some very old code in AsmWriter's WriteConstantInternal.

llvm-svn: 254688

This reverts commit b7250858d96b8ce567681214273ac0e62713c661.

Reverting in order to investigate Windows test failure.

llvm-svn: 254687

llvm-svn: 254686

FIXME: It may be ELF-generic.
llvm-svn: 254685

with its source instead of forcing the values on GPRs.

This improves the lowering of vector code when such bitcasts happen in the
middle of vector computations.

rdar://problem/23691584 

llvm-svn: 254684

Re-comitting with a change that avoids undefined uses getting put into
the VRegUses list.

The new algorithm remembers the uses encountered while walking backwards
until a matching def is found. Contrary to the previous version this:
- Works without LiveIntervals being available
- Allows to increase the precision to subregisters/lanemasks
  (not used for now)

The changes in the AMDGPU tests are necessary because the R600 scheduler
is not stable with respect to the order of nodes in the ready queues.

Differential Revision: http://reviews.llvm.org/D9068

llvm-svn: 254683

Summary:
Looking into some recent issues with LLDBs expression parser highlighted that upstream clang passes vectors types differently to Android Open Source Project's clang for Arm Android targets.
This patch reflects the changes present in the AOSP and allows LLDB's JIT expression evaluation to work correctly for Arm Android targets when passing vectors.

This is submitted with consent of the original author Stephen Hines.

Reviewers: asl, rsmith, ADodds, rnk

Subscribers: rnk, aemerson, tberghammer, danalbert, srhines, cfe-commits, pirama

Differential Revision: http://reviews.llvm.org/D14639

llvm-svn: 254682

This is a revised version of r254655 which uses a Printable wrapper
class to avoid ambiguous overload problems.

Differential Revision: http://reviews.llvm.org/D14348

llvm-svn: 254681

Summary:
computeRegisterLiveness and analyzePhysReg are currently getting
confused about liveness in some cases, breaking copyPhysReg's
calculation of whether AX is dead in some cases. Work around this issue
temporarily by assuming that AX is always live.

See detail in: https://llvm.org/bugs/show_bug.cgi?id=25033#c7
And associated bugs PR24535 PR25033 PR24991 PR24992 PR25201.

This workaround makes the code correct but slightly inefficient, but it
seems to confuse the machine instr verifier which now things EAX was
undefined in some cases where it's being conservatively saved /
restored.

Reviewers: majnemer, sanjoy
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D15198

llvm-svn: 254680

It became impossible to get here with a half in r157393, over 3 years
ago.

llvm-svn: 254679

With the latest refactoring and code sharing patches landed, 
it is possible to unify the value profile implementation between
raw and indexed profile. This is part  in prfofile runtime.

Differential Revision: http://reviews.llvm.org/D15057

llvm-svn: 254678

With the latest refactoring and code sharing patches landed, 
it is possible to unify the value profile implementation between
raw and indexed profile. This is the patch in raw profile reader 
that uses the common interface. 

Differential Revision: http://reviews.llvm.org/D15056

llvm-svn: 254677

llvm-svn: 254676

llvm-svn: 254675

CFI emits jump slots for indirect functions as a byte array
constant, and declares function-typed aliases to these constants.

This change fixes AsmPrinter to emit these aliases as function
symbols and not data symbols.

llvm-svn: 254674