Note, ENABLE_TIMESTAMPS is either 1 or 0 in Makefile.config.

llvm-svn: 256138

Support for COFF timestamps was unintentionally broken in r246905 when
it was conditionally available depending on whether or not LLVM was
configured with LLVM_ENABLE_TIMESTAMPS.  However, Config/config.h was
never included which essentially broke the feature.  Due to lax testing,
the breakage was never identified until we observed strange failures
during incremental links of Chromium.

This issue is resolved by simply including Config/config.h in
WinCOFFObjectWriter and teaching lit that the MC/COFF/timestamp.s test
is conditionally supported depending on LLVM_ENABLE_TIMESTAMPS.  With
this in place, we can strengthen the test to ensure that it will not
accidentally get broken in the future.

This fixes PR25891.

llvm-svn: 256137

It resolves clang selfhosting with std::once() for Cygwin.

FIXME: It may be EmulatedTLS-generic also for X86-Android.
FIXME: Pass EmulatedTLS to LLVM CodeGen from Clang with -femulated-tls.
llvm-svn: 256134

The slightly strange indentation comes from clang-format.

llvm-svn: 256132

llvm-svn: 256131

llvm-svn: 256130

llvm-svn: 256127

[X86] Prevent constant hoisting for a couple compare immediates that the selection DAG knows how to optimize into a shift.

This allows "icmp ugt %a, 4294967295" and "icmp uge %a, 4294967296" to be optimized into right shifts by 32 which can fold the immediate into the shift instruction. These patterns show up with some regularity in real code.

Unfortunately, since getImmCost can't see the icmp predicate we can't be tell if we're only catching these specific cases.

llvm-svn: 256126

Summary:
This adds the core AVR TableGen file, along with the register descriptions.

Lines in AVR.td which require other TableGen files which haven't been committed
yet are commented out.

This is a fairly trivial patch, and should only require a quick review.

I kept the line width smaller than 80 columns, but there are a few exceptions
because I'm not sure how to split a string over several lines.

Reviewers: stoklund

Subscribers: dylanmckay, agnat

Differential Revision: http://reviews.llvm.org/D14684

llvm-svn: 256120

Ideally much more stuff should be moved out of llvm-objdump.cpp, but that
will happen later.

llvm-svn: 256118

llvm-svn: 256117

llvm-svn: 256116

Summary:
r250697 fixed the mapping for ARM mode. We have to do the same for Thumb2 otherwise the same llvm.arm.ssat() will generate different saturating amount for ARM and Thumb.

r250697: http://reviews.llvm.org/rL250697

Reviewers: rmaprath

Subscribers: aemerson, llvm-commits, rengolin

Differential Revision: http://reviews.llvm.org/D15653

llvm-svn: 256115

With the support of value profiling added, the Indexed prof
reader gets less efficient. The prof reader initialization
used to be just reading the file header, but with VP support
added, initialization needs to walk through all profile keys
of ondisk hash table resulting in very poor locality and large
memory increase (keys are stored together with the profile data
in the mapped profile buffer). Even worse, when the reader is 
used by the compiler (not llvm-profdata too), the penalty becomes
very high as compilation of each single module requires touching
profile data buffer for the whole program. 

In this patch, the icall target values (MD5hash) are no longer eargerly 
converted back to name strings when the data is read into memory. New
interface is added to to profile reader so that InstrProfSymtab can be
lazily created for Indexed profile reader on-demand. Creating of the 
symtab is intended to be used by llvm-profdata tool for symbolic dumping
of  VP data. It can be used with compiler (for legacy out of tree uses)
too but not recommended due to compile time and memory reasons 
mentioned above.

Some other cleanups are also included: Function Addr to md5 map is now
consolated into InstrProfSymtab. InstrProfStringtab is no longer used and
eliminated.

llvm-svn: 256114

llvm-svn: 256113

Revert r219171, "llvm/test/lit.cfg: Suppress dwarf stuff for targeting x86_64-mingw32 while investigating since r219108."

It has been fixed since r219280 by David Majnemer.

llvm-svn: 256112

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 256111

`CloneAndPruneIntoFromInst` sometimes RAUW's dead instructions with
`undef` before erasing them (to avoid deleting instructions that still
have uses).  This changes the `WeakVH` in `OperandBundleCallSites` to
hold an `undef`, and we need to guard for this situation in eventuality
in `llvm::InlineFunction`.

llvm-svn: 256110

The `CHECK-NOT` line was incorrect, and would not have caught a
breakage.

llvm-svn: 256109

llvm-svn: 256108

llvm-svn: 256107

llvm-svn: 256106

An error that is pretty easy to make is to use the lazy bitcode reader
and then do something like

if (V.use_empty())

The problem is that uses in unmaterialized functions are not accounted
for.

This patch adds asserts that all uses are known.

llvm-svn: 256105

The test will mainly be useful to check that the .s file assembles and relocates properly because vtables reference functions in their data section.

llvm-svn: 256102

llvm-svn: 256101

llvm-svn: 256100

llvm-svn: 256099

SDIV and UDIV had special handling, but this is the same handling
that min/max need.

llvm-svn: 256098

llvm-svn: 256097

llvm-svn: 256096

Make personality functions, prefix data, and prologue data hungoff
operands of Function.

This is based on the email thread "[RFC] Clean up the way we store
optional Function data" on llvm-dev.

Thanks to sanjoyd, majnemer, rnk, loladiro, and dexonsmith for feedback!

Includes a fix to scrub value subclass data in dropAllReferences. Does not
use binary literals.

Differential Revision: http://reviews.llvm.org/D13829

llvm-svn: 256095

This reverts commit r256093.

This broke lld-x86_64-win7 because of -Werror,-Wc++1y-extensions.

llvm-svn: 256094

Make personality functions, prefix data, and prologue data hungoff
operands of Function.

This is based on the email thread "[RFC] Clean up the way we store
optional Function data" on llvm-dev.

Thanks to sanjoyd, majnemer, rnk, loladiro, and dexonsmith for feedback!

Includes a fix to scrub value subclass data in dropAllReferences.

Differential Revision: http://reviews.llvm.org/D13829

llvm-svn: 256093

Creator and lookup interfaces are added to this symtab class.
The new interfaces will be used by InstrProf Readers and writer.

A unit test is also added for the new APIs.

llvm-svn: 256092

This reverts commit r256090.

This broke llvm-clang-lld-x86_64-debian-fast.

llvm-svn: 256091

Make personality functions, prefix data, and prologue data hungoff
operands of Function.

This is based on the email thread "[RFC] Clean up the way we store
optional Function data" on llvm-dev.

Thanks to sanjoyd, majnemer, rnk, loladiro, and dexonsmith for feedback!

Differential Revision: http://reviews.llvm.org/D13829

llvm-svn: 256090

Follow-up to r256056.

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 256087

llvm-svn: 256086

llvm-svn: 256085

llc_dwarf adds an mtriple, which forces this to use COFF, causing
the test to fail. Hopefully using regular llc without the triple
will work fine everywhere

llvm-svn: 256084