Since the range-based constraint manager (default) is weak in handling comparisons where symbols are on both sides it is wise to rearrange them to have symbols only on the left side. Thus e.g. A + n >= B + m becomes A - B >= m - n which enables the constraint manager to store a range m - n .. MAX_VALUE for the symbolic expression A - B. This can be used later to check whether e.g. A + k == B + l can be true, which is also rearranged to A - B == l - k so the constraint manager can check whether l - k is in the range (thus greater than or equal to m - n).

The restriction in this version is the the rearrangement happens only if both the symbols and the concrete integers are within the range [min/4 .. max/4] where min and max are the minimal and maximal values of their type.

The rearrangement is not enabled by default. It has to be enabled by using -analyzer-config aggressive-relational-comparison-simplification=true.

Co-author of this patch is Artem Dergachev (NoQ).

Differential Revision: https://reviews.llvm.org/D41938

llvm-svn: 329780

Summary: - Following-up the sanitizer's part commit https://reviews.llvm.org/rCRT329631, we enable fuzzer flags.

Reviewers: brad, thakis, dberris

Reviewed By: dberris

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D44878

llvm-svn: 329779

This was removed in D39932 but turned out this is actually needed
because runtimes such as compiler-rt and libc++ rely on common options
processing for setting certain flags such as -ffunction-sections and
-fdata-sections.

Differential Revision: https://reviews.llvm.org/D45507

llvm-svn: 329778

llvm-svn: 329777

This is a follow-up to D45474.

llvm-svn: 329776

This makes it consistent with the 128/256-bit functions.

Someday maybe we'll have all the masking moved to selects.

llvm-svn: 329775

[X86] Remove 128/256-bit masked pmaddubsw and pmaddwd intrinsics. Replace 512-bit masked intrinsic with unmasked intrinsic and a select.

The 128/256-bit versions were no longer used by clang. It uses the legacy SSE/AVX2 version and a select. The 512-bit was changed to the same for consistency.

llvm-svn: 329774

This is a follow-up to D45474.

llvm-svn: 329773

Summary:
This patch implements the `-fxray-modes=` flag which allows users
building with XRay instrumentation to decide which modes to pre-package
into the binary being linked. The default is the status quo, which will
link all the available modes.

For this to work we're also breaking apart the mode implementations
(xray-fdr and xray-basic) from the main xray runtime. This gives more
granular control of which modes are pre-packaged, and picked from
clang's invocation.

This fixes llvm.org/PR37066.

Note that in the future, we may change the default for clang to only
contain the profiling implementation under development in D44620, when
that implementation is ready.

Reviewers: echristo, eizan, chandlerc

Reviewed By: echristo

Subscribers: mgorny, mgrang, cfe-commits, llvm-commits

Differential Revision: https://reviews.llvm.org/D45474

llvm-svn: 329772

[X86] In X86FlagsCopyLowering, when rewriting a memory setcc we need to emit an explicit MOV8mr instruction.

Previously the code only knew how to handle setcc to a register.

This should fix a crash in the chromium build.

llvm-svn: 329771

This avoids the need for a custom generated config file which is desired
because the custom config files differs per-target which means we cannot
reuse headers across different targets.

Differential Revision: https://reviews.llvm.org/D45304

llvm-svn: 329770

llvm-svn: 329769

With -fno-plt, for example, calls to printf when getting converted to puts
still use the PLT. This patch checks for the metadata "RtLibUseGOT" and
annotates the declaration with the right attributes.

Differential Revision: https://reviews.llvm.org/D45180

llvm-svn: 329768

llvm-svn: 329767

[AST] Fix some Clang-tidy modernize-use-auto and Include What You Use warnings; other minor fixes (NFC).

llvm-svn: 329766

With -fno-plt, global value references can use GOTPCREL and RIP must be used.

Differential Revision: https://reviews.llvm.org/D45460

llvm-svn: 329765

Author: Samuel Pitoiset

ds_read_b128 and ds_write_b128 have been recently enabled
under the amdgpu-ds128 option because the performance benefit
is unclear.

Though, using 128-bit loads/stores for the local address space
appears to introduce regressions in tessellation shaders. Not
sure what is broken, but as ds_read_b128/ds_write_b128 are not
enabled by default, just introduce a global option and enable
128-bit only if requested (until it's fixed/used correctly).

v2: - fix regressions in merge-stores.ll and multiple_tails.ll

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105464
llvm-svn: 329764

llvm-svn: 329763

Introduce a new builtin, __builtin_dump_struct, that is useful for dumping structure contents at runtime in circumstances where debuggers may not be easily available (such as in kernel work).

Patch by Paul Semel.

llvm-svn: 329762

Summary:
When inserting MOVs to avoid Falkor HWPF collisions, the non-base
register operand of load instructions (e.g. a register offset) was not
being considered live, so it could potentially have been used as a
scratch register, clobbering the actual offset value.

Reviewers: mcrosier

Subscribers: rengolin, javed.absar, kristof.beyls, llvm-commits

Differential Revision: https://reviews.llvm.org/D45502

llvm-svn: 329761

This reverts commit r329758.

llvm-svn: 329760

This check attempts to catch buggy uses of the `TEMP_FAILURE_RETRY`
macro, which is provided by both Bionic and glibc.

Differential Revision: https://reviews.llvm.org/D45059

llvm-svn: 329759

This was omitted in D45422 resulting in a warning.

Differential Revision: https://reviews.llvm.org/D45499

llvm-svn: 329758

Based on a patch for the ICF warning by Rui.

llvm-svn: 329757

Again, refs. D45405, rL329730.

llvm-svn: 329756

This is based on an example that was recently posted on llvm-dev:

void *propagate_null(void* b, int* g) {
  if (!b) {
    return 0;
  }
  (*g)++;
  return b;
}

https://godbolt.org/g/xYk3qG

The original code or constant propagation in other passes has obscured the fact 
that the phi can be removed completely.

Differential Revision: https://reviews.llvm.org/D45448

llvm-svn: 329755

Differential Revision: https://reviews.llvm.org/D45499

llvm-svn: 329754

Summary:
The verification rules for the intrinsics for atomic memcpy, atomic memmove,
and atomic memset are basically code clones. This change merges their verification
rules into a single block to remove duplication.

llvm-svn: 329753

Summary:
Darwin dynamic linker can handle weak symbols in ConstDataSection.
ReadonReadOnlyWithRel symbols should be emitted in ConstDataSection
instead of normal DataSection.

rdar://problem/39298457

Reviewers: dexonsmith, kledzik

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D45472

llvm-svn: 329752

Added attributes for better optimization of the OpenMP code.

llvm-svn: 329751

Fixes build for me:

[1/5] Linking CXX shared library lib/libclangTidyModernizeModule.so.7svn
FAILED: lib/libclangTidyModernizeModule.so.7svn
<...>
/usr/local/bin/ld.lld: error: undefined symbol: clang::tooling::fixit::internal::getText(clang::SourceRange, clang::ASTContext const&)
>>> referenced by UseAutoCheck.cpp
>>>               tools/clang/tools/extra/clang-tidy/modernize/CMakeFiles/clangTidyModernizeModule.dir/UseAutoCheck.cpp.o:(clang::tidy::modernize::UseAutoCheck::replaceExpr(clang::DeclStmt const*, clang::ASTContext*, llvm::function_ref<clang::QualType (clang::Expr const*)>, llvm::StringRef))


Refs. D45405, rL329730.

llvm-svn: 329750

Fixes build for me:

[1/7] Linking CXX shared library lib/libclangTidyFuchsiaModule.so.7svn
FAILED: lib/libclangTidyFuchsiaModule.so.7svn
<...>
/usr/local/bin/ld.lld: error: undefined symbol: clang::tidy::google::build::UnnamedNamespaceInHeaderCheck::UnnamedNamespaceInHeaderCheck(llvm::StringRef, clang::tidy::ClangTidyContext*)
>>> referenced by FuchsiaTidyModule.cpp
>>>               tools/clang/tools/extra/clang-tidy/fuchsia/CMakeFiles/clangTidyFuchsiaModule.dir/FuchsiaTidyModule.cpp.o:(std::_Function_handler<clang::tidy::ClangTidyCheck* (llvm::StringRef, clang::tidy::ClangTidyContext*), void clang::tidy::ClangTidyCheckFactories::registerCheck<clang::tidy::google::build::UnnamedNamespaceInHeaderCheck>(llvm::StringRef)::'lambda'(llvm::StringRef, clang::tidy::ClangTidyContext*)>::_M_invoke(std::_Any_data const&, llvm::StringRef&&, clang::tidy::ClangTidyContext*&&))

Refs. D45447, rCTE329720

llvm-svn: 329749

This allows toolchain drivers to add multiple libc++ include paths akin
to libstdc++. This is useful in multiarch setup when some headers might
be in target specific include directory. There should be no functional
change.

Differential Revision: https://reviews.llvm.org/D45422

llvm-svn: 329748

Summary:
A simple refactor to remove duplicate code in the definitions of
MemSetInst, AtomicMemSetInst, and AnyMemSetInst. Introduce a
templated base class that contains all of the methods unique to
a memset intrinsic, and derive these three classes from that.

llvm-svn: 329747

Recommit r329716 "Add missing nullptr check before getSection() to AArch64MachObjectWriter::recordRelocation"

This commit fixes the bot failures that were coming up before with r329716.

The fix was to move the check for "isInSection()" inside of the if condition
and emit the error there instead of waiting to get past the unreachable statement.

This should work in debug and release builds now.

llvm-svn: 329746

llvm-svn: 329745

Summary:
A simple refactor to remove duplicate code in the definitions of
MemTransferInst, AtomicMemTransferInst, and AnyMemTransferInst.
Introduce a templated base class that contains all of the methods
unique to a memory transfer intrinsic, and derive these three
classes from that.

llvm-svn: 329744

rdar://39175175

llvm-svn: 329743

Reviewers: craig.topper, zvi, echristo

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D45055

llvm-svn: 329742

Reviewers: craig.topper, zvi, echristo

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D45056

llvm-svn: 329741