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311588 lei
Update branch coalescing to be a PowerPC specific pass

Implementing this pass as a PowerPC specific pass.  Branch coalescing utilizes
the analyzeBranch method which currently does not include any implicit operands.
This is not an issue on PPC but must be handled on other targets.

Differential Revision : https: // reviews.llvm.org/D32776
311587 sbc
Update comments: parallel_for_each -> parallelForEach

Also remove unused include of raw_ostream.h

Differential Revision: https://reviews.llvm.org/D37048
311586 phosek
[ELF] Don't output headers into a segment if there's no space for them

Currently, LLD checks whether there's enough space for headers by
checking if headers fit below the address of the first allocated
section. However, that's always thue if the binary doesn't start
at zero which means that LLD always emits a segment for headers,
even if no other sections belong to that segment.

This is a problem in cases when linker script is being used with a
non-zero start address when we don't want to make the headers visible
by not leaving enough space for them. This pattern is common in
embedded programming but doesn't work in LLD.

This patch changes the behavior of LLD in case when linker script
is being to match the behavior of BFD ld and gold, which is to only
place headers into a segment when they're covered by some output
section.

Differential Revision: https://reviews.llvm.org/D36256
311582 compnerd
test: fix missed test

I had built without python bindings and did not find this in the grep
output.  Adjust the test output for the printing format update.
311581 gclayton
Updated my email address.

311580 d0k
[X86] Fix -Wenum-compare warning

lib/Target/X86/X86ISelLowering.cpp:34613:25: error: enumeral mismatch in
conditional expression: 'llvm::ISD::NodeType' vs
'llvm::X86ISD::NodeType'
311579 compnerd
Process: fix FXSAVE on x86

The FXSAVE member `ftw` (FPU Tag Word) was given the wrong size (8-bit)
instead of the correct width (16-bit) as per the x87 Programmer's
Manual.  Adjust this to ensure that we print out the complete value for
the register.
311577 compnerd
ObjC: fix some -Wpedantic warnings by removing ';'

Remove some stray ';' that were in the source code.  NFC.
311576 compnerd
Headers: explicitly specify double-word alignment

GCC will interpret `__attribute__((__aligned__))` as 8-byte alignment on
ARM, but clang will not.  Explicitly specify the alignment.  This
mirrors the declaration in libunwind.
311575 krobelus
[clang-diff] Properly clear the selection in HTML diff

Reviewers: arphaman

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D37072
311574 compnerd
ARM: explicitly specify the 8-byte alignment

It seems that GCC interprets `__attribute__((__aligned__))` as 8-byte
alignment on ARM, but clang does not.  Explicitly specify the
double-word alignment value to ensure that the structure is properly
aligned.
311572 ctopper
[AVX512] Don't create SHRUNKBLEND SDNodes for 512-bit vectors

There are no 512-bit blend instructions so we shouldn't create SHRUNKBLEND for them.

On a side note, it looks like there may be a missed opportunity for constant folding TESTM when LHS and RHS are equal.

This fixes PR34139.

Differential Revision: https://reviews.llvm.org/D36992
311571 krobelus
[clang-diff] Reformat test, NFC
311570 krobelus
[clang-diff] HTML diff navigation

Summary:
This adds shortcuts j and k to jump between changes.
It is especially useful in diffs with few changes.

Reviewers: arphaman

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D36685
311569 krobelus
[analyzer] Make StmtDataCollector customizable

Summary:
This moves the data collection macro calls for Stmt nodes
to lib/AST/StmtDataCollectors.inc

Users can subclass ConstStmtVisitor and include StmtDataCollectors.inc
to define visitor methods for each Stmt subclass. This makes it also
possible to customize the visit methods as exemplified in
lib/Analysis/CloneDetection.cpp.

Move helper methods for data collection to a new module,
AST/DataCollection.

Add data collection for DeclRefExpr, MemberExpr and some literals.

Reviewers: arphaman, teemperor!

Subscribers: mgorny, xazax.hun, cfe-commits

Differential Revision: https://reviews.llvm.org/D36664
311568 ctopper
[X86] Remove X86ISD::FMADD in favor ISD::FMA

There's no reason to have a target specific node with the same semantics as a target independent opcode.

This should simplify D36335 so that it doesn't need to touch X86ISelDAGToDAG.cpp

Differential Revision: https://reviews.llvm.org/D36983
311567 yhs
bpf: close the file descriptor after probe inside getHostCPUNameForBPF

Signed-off-by: Yonghong Song <yhs@fb.com>
311566 krasimir
Revert "[clang-format] Emit absolute splits before lines for comments"

This reverts commit r311559, which added a test containing raw string
literals in macros, which chokes gcc:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55971
311565 hans
LowerAtomic: Don't skip optnone functions; atomic still need lowering (PR34020)

The lowering isn't really an optimization, so optnone shouldn't make a
difference. ARM relies on the pass running when using "-mthread-model
single", because in that mode, it doesn't run AtomicExpand. See bug for
more details.

Differential Revision: https://reviews.llvm.org/D37040
311564 ibiryukov
Fixed invalid variable name in Dockerfile scripts.

LLVM_SVN_REVISION was used instead of LLVM_SVN_REV.
This caused a revision option to be ignored in Dockerfiles.
311563 compnerd
Headers: give _Unwind_Control_Block double-word alignment

The C++ ABI requires that the exception object (which under AEABI is the
`_Unwind_Control_Block`) is double-word aligned.  The attribute was
applied to the `_Unwind_Exception` type, but not the
`_Unwind_Control_Block`.  This should fix the libunwind test for the
alignment of the exception type.
311562 compnerd
unwind: explicitly align `_Unwind_Control_Block`

The C++ ABI requires that the exception object is double-word aligned.
The alignment attribute was applied to the `_Unwind_Exception` type
which is used on non-EHABI targets.  On EHABI, the exception object type
is `_Unwind_Control_Block`.  Apply the explicit maximal alignment on the
type to ensure that the allocation has the correct alignment.

Resolves PR33858!
311561 nico
Implement CFG construction for __try / __except / __leave.

This makes -Wunreachable-code work for programs containing SEH (except for
__finally, which is still missing for now).

__try is modeled like try (but simpler since it can only have a single __except
or __finally), __except is fairly similar to catch (but simpler, since it can't
contain declarations). __leave is implemented similarly to break / continue.

Use the existing addTryDispatchBlock infrastructure (which
FindUnreachableCode() in ReachableCode.cpp uses via cfg->try_blocks_begin()) to
mark things in the __except blocks as reachable.

Re-use TryTerminatedBlock. This means we add EH edges from calls to the __try
block, but not from all other statements. While this is incomplete, it matches
LLVM's SEH codegen support. Also, in practice, BuildOpts.AddEHEdges is always
false in practice from what I can tell, so we never even insert the call EH
edges either.

https://reviews.llvm.org/D36914
311560 vleschuk
Revert r311546 as it breaks build

http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win/builds/4394

311559 krasimir
[clang-format] Emit absolute splits before lines for comments

Summary:
This patch makes the splits emitted for the beginning of comment lines during
reformatting absolute. Previously, they were relative to the start of the
non-whitespace content of the line, which messes up further TailOffset
calculations in breakProtrudingToken. This fixes an assertion failure reported
in bug 34236: https://bugs.llvm.org/show_bug.cgi?id=34236.

Reviewers: djasper

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D36956