llvm-svn: 285219

This patch corresponds to review https://reviews.llvm.org/D25906.
Committing on behalf of Tony Jiang.

llvm-svn: 285218

Instead of

 cmp w0, #1
 orr w8, wzr, #0x1
 cneg w0, w8, ne

we now generate

 cmp w0, #1
 csinv w0, w0, wzr, eq

PR28965

llvm-svn: 285217

Actually use = delete to mark constructors and operators we want to not exist. Just declaring them as private works, but it can confuse certain tools as it doesn't actually declare intent, and the C++11 way is more expressive anyway, so this is pure win

rdar://28960209

llvm-svn: 285216

Update the README.txt with newer information, add a link to the Emscripten
page explaining the current easiest way to use the LLVM wasm backend, and
mention that other ways of using the LLVM wasm backend are in development.

llvm-svn: 285215

llvm-svn: 285214

Reviewed at: https://reviews.llvm.org/D25958

llvm-svn: 285213

This reapplies revision 285093.  Original commit message:

The branch folding pass tail merges blocks into a common-tail.  However, the
tail retains the debug information from one of the original inputs to the
merge (chosen randomly).  This is a problem for sampled-based PGO, as hits
on the common-tail will be attributed to whichever block was chosen,
irrespective of which path was actually taken to the common-tail.

This patch fixes the issue by nulling the debug location for the common-tail.

Differential Revision: https://reviews.llvm.org/D25742

llvm-svn: 285212

Patch by Laurent Morichetti.

Differential Revision: https://reviews.llvm.org/D25920

llvm-svn: 285211

Add missing ISA versions 7.0.2/8.0.4/8.1.0. to backend.

Refactor processor definition to use ISA version features.

Fixed ISA version for stoney.

Based on Laurent Morichetti's patch.

Differential Revision: https://reviews.llvm.org/D25919

llvm-svn: 285210

Summary:
In order to support 32-bit platforms, we have to make some adjustments in
multiple locations, one of them being the Scudo chunk header. For it to fit on
64 bits (as a reminder, on x64 it's 128 bits), I had to crunch the space taken
by some of the fields. In order to keep the offset field small, the secondary
allocator was changed to accomodate aligned allocations for larger alignments,
hence making the offset constant for chunks serviced by it.

The resulting header candidate has been added, and further modifications to
allow 32-bit support will follow.

Another notable change is the addition of MaybeStartBackgroudThread() to allow
release of the memory to the OS.

Reviewers: kcc

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D25688

llvm-svn: 285209

The test contains a switch statement in which two of the cases are
tail-merged, with the call to __ubsan_handle_dynamic_type_cache_miss_abort
in the common tail. When tail-merging occurs, the debug location of the
tail is randomly taken from one of the merge inputs.  Luckily for the test,
the expected line number in the check is the one which is chosen by the
tail-merge.  However, if the switch cases are re-ordered the test will
fail.

This patch disables tail-merge, making the test resilient to changes
in tail-merge, and unblocking review D25742.  It does not change the
semantics of the test.

llvm-svn: 285208

Summary: This patch introduces updateDiscriminator to DILocation so that it can be directly called by AddDiscriminator. It also makes it easier to update the discriminator later.

Reviewers: dnovillo, dblaikie, aprantl, echristo

Subscribers: mehdi_amini, llvm-commits

Differential Revision: https://reviews.llvm.org/D25959

llvm-svn: 285207

These cache file are provided as an example of how to set up simple multi-stage CMake builds. I have a batch of documentation updates for LLVM.org which reference these files.

llvm-svn: 285206

We used to have one allocator per file, which reduces the advantage of
using an allocator in the first place.

This is a small speed up is most cases. The largest speedup was in
1.014X in chromium no-gc. The largest slowdown was scylla at 1.003X.

llvm-svn: 285205

clear_cache is using R7 for the SVC call and that's the frame pointer in
GCC, which is only disabled on -O2/3, so Release builds finish, Debug don't.

Fixes PR30797.

llvm-svn: 285204

This reverts r283003

llvm-svn: 285203

llvm-svn: 285202

This finds all of the references to a frame index in a function, and
sorts by the offset. If multiple instructions use the same offset,
nothing was breaking the tie for sorting.

This avoids the test failures the reverted r282999 introduced.

llvm-svn: 285201

1. Use 'auto' with dyn_cast.
2. Variables start with a capital letter.
3. Use proper punctuation in comments.

llvm-svn: 285200

Summary:
AMDGPU will need this one i16 is added as a legal type.  This is tested by:

test/CodeGen/AMDGPU/sdiv.ll
test/CodeGen/AMDGPU/sdivrem24.ll
test/CodeGen/AMDGPU/udiv.ll
test/CodeGen/AMDGPU/udivrem24.ll

Reviewers: bogner, efriedma

Subscribers: efriedma, wdng, llvm-commits

Differential Revision: https://reviews.llvm.org/D25699

llvm-svn: 285199

Summary:
A single flat memory operations that might access the scratch buffer
can only access MaxPrivateElementSize bytes.

Reviewers: arsenm

Subscribers: kzhuravl, wdng, nhaehnle, yaxunl, tony-tye, llvm-commits

Differential Revision: https://reviews.llvm.org/D25788

llvm-svn: 285198

Summary:
This test had run lines disabling/enabling the promote alloca pass, but
enabling/disabling promote alloca had no impact on the output.

Reviewers: arsenm

Subscribers: mgrang, kzhuravl, wdng, nhaehnle, yaxunl, llvm-commits, tony-tye

Differential Revision: https://reviews.llvm.org/D25787

llvm-svn: 285197

Summary:
In the case where of 'select i1 , f32, f32' or select i1, f64, f64 prefer lowering to masked-moves over branches.

Fixes pr30561

Reviewers: igorb, aymanmus, delena

Differential Revision: https://reviews.llvm.org/D25310

llvm-svn: 285196

llvm-svn: 285195

llvm-svn: 285194

While in the area, also change some unsigned variables to size_t, and
introduce an LLVM_FALLTHROUGH instead of a comment stating that.

Differential Revision: http://reviews.llvm.org/D25982

llvm-svn: 285193

Extend lifetime of ExceptionTypeStorage, as it is referenced by
CanonicalEPI and used outside the block (ExceptionSpec.Exceptions is an
ArrayRef)

Patch by Sam McCall!

Differential Revision: https://reviews.llvm.org/D25983

llvm-svn: 285192

Differential Revision: https://reviews.llvm.org/D25969

llvm-svn: 285191

llvm-svn: 285190

* Assume that clang passes non-zero alignment value to DIBuilder
only in case when it was forced by C++11 'alignas', C11 '_Alignas'
or compiler attribute '__attribute__((aligned (N)))'.

* Emit DW_AT_alignment if alignment is specified for type/object.

Differential Revision: https://reviews.llvm.org/D24425

llvm-svn: 285189

Differential Revision: http://reviews.llvm.org/D25981

llvm-svn: 285188

Summary:
Check whether the setting the breakpoint failed during instruction emulation. If
it did, the next pc is likely in unmapped memory, and the inferior will crash
anyway after the next instruction. Do not return an error in this case, but just
continue stepping.
Reenabled the crash during step test for android/linux.

Reviewers: labath

Subscribers: aemerson, rengolin, tberghammer, danalbert, srhines, lldb-commits

Differential Revision: https://reviews.llvm.org/D25926
Author: Jason Majors <jmajors@google.com>

llvm-svn: 285187

This patch make lld show following details for undefined symbol errors:
- file (line)
- file (function name)
- file (section name + offset)

Differential revision: https://reviews.llvm.org/D25826

llvm-svn: 285186

[IndVarSimplify][DebugLoc] When widening the exit loop condition, correctly reuse the debug location of the original comparison.

When the loop exit condition is canonicalized as a != compaison, reuse the
debug location of the original (non canonical) comparison.

Before this patch, the debug location of the new icmp was obtained from the
loop latch terminator. This patch fixes the issue by correctly setting the
IRBuilder's "current debug location" to the location of the original compare.

Differential Revision: https://reviews.llvm.org/D25953

llvm-svn: 285185

If two modules contain duplicate class definitions the lookup result can contain
more than 2 elements. Sift the lookup results until we find a field decl.

It is not necessary to do ODR checks in place as they done elsewhere.

This should fix issues when compiling with libstdc++ 5.2 and 6.2.

Patch developed in collaboration with Richard Smith!

llvm-svn: 285184

The commit broke the builds.

llvm-svn: 285183

All values are returned by a method as size_t, and subsequently passed
to functions taking a size_t, or used where a size_t is also valid.
Better still, two loops (which had an unsigned), can be replaced by
a range-based for loop.

Differential Revision: http://reviews.llvm.org/D25939

llvm-svn: 285182

* Assume that clang passes non-zero alignment value to DIBuilder
only in case when it was forced by C++11 'alignas', C11 '_Alignas'
or compiler attribute '__attribute__((aligned (N)))'.

* Emit DW_AT_alignment if alignment is specified for type/object.

Differential Revision: https://reviews.llvm.org/D24425

llvm-svn: 285181

NFC

Differential Revision: http://reviews.llvm.org/D25938

llvm-svn: 285180