Summary: This patch fixes issues in codegen uncovered due to https://reviews.llvm.org/D26718

Reviewers: mssimpso

Subscribers: llvm-commits, mzolotukhin

Differential Revision: https://reviews.llvm.org/D26727

llvm-svn: 287135

Summary:
1. Don't try to copy values to and from the same register class.
2. Replace copies with of registers with immediate values with v_mov/s_mov
   instructions.

The main purpose of this change is to make MachineSink do a better job of
determining when it is beneficial to split a critical edge, since the pass
assumes that copies will become move instructions.

This prevents a regression in uniform-cfg.ll if we enable critical edge
splitting for AMDGPU.

Reviewers: arsenm

Subscribers: arsenm, kzhuravl, llvm-commits

Differential Revision: https://reviews.llvm.org/D23408

llvm-svn: 287131

llvm-svn: 287130

llvm-svn: 287127

[ExecutionEngine] Fix some Clang-tidy modernize-use-default, modernize-use-equals-delete and Include What You Use warnings; other minor fixes.

Differential revision: https://reviews.llvm.org/D26729

llvm-svn: 287126

We can replace "scalar" FP-bitwise-logic with other forms of bitwise-logic instructions. 
Scalar SSE/AVX FP-logic instructions only exist in your imagination and/or the bowels of 
compilers, but logically equivalent int, float, and double variants of bitwise-logic 
instructions are reality in x86, and the float variant may be a shorter instruction 
depending on which flavor (SSE or AVX) of vector ISA you have...so just prefer float all 
the time.

This is a preliminary step towards solving PR6137:
https://llvm.org/bugs/show_bug.cgi?id=6137

Differential Revision:
https://reviews.llvm.org/D26712

llvm-svn: 287122

This unit test infinite-looped on s390x due to a thread_yield being optimized
out. I've updated the QueueChannel class (where thread_yield was called) to use
a condition variable instead. This should cause the unit test to behave
correctly.

llvm-svn: 287121

If the global name doesn't start with __sancov_gen, ASan will insert
unecessary red zones around it.

llvm-svn: 287117

llvm-svn: 287116

llvm-svn: 287111

Shows missed opportunity to recognise reduced integer division result size

llvm-svn: 287110

Both the (V)CVTDQ2PD (i32 to f64) and (V)CVTUDQ2PD (u32 to f64) conversion instructions are lossless and can be safely represented as generic SINT_TO_FP/UINT_TO_FP calls instead of x86 intrinsics without affecting final codegen.

LLVM counterpart to D26686

Differential Revision: https://reviews.llvm.org/D26736

llvm-svn: 287108

llvm-svn: 287106

llvm-svn: 287104

llvm-svn: 287103

MipsFastISel uses a a class to represent addresses with a signed member
to represent the offset. MipsFastISel::emitStore, emitLoad and computeAddress
all treated the offset as being positive. In cases where the offset was
actually negative and a frame pointer was used, this would cause the constant
synthesis routine to crash as it would generate an unexpected instruction
sequence when frame indexes are replaced.

Reviewers: vkalintiris

Differential Revision: https://reviews.llvm.org/D26192

llvm-svn: 287099

This patch adds the single operand form of the not alias to microMIPS and
MIPS along with additional tests.

This partially resolves PR/30381.

Thanks to Sean Bruno for reporting the issue!

llvm-svn: 287097

Summary:
All uses have been replaced by appropriate std::chrono types, and the class is
now unused.

Reviewers: zturner, mehdi_amini

Subscribers: llvm-commits, mgorny

Differential Revision: https://reviews.llvm.org/D26447

llvm-svn: 287094

Differential Revision: https://reviews.llvm.org/D26128

llvm-svn: 287087

Summary: These intrinsics have been unused for clang for a while. This patch removes them. We auto upgrade them to extractelements, a scalar operation and then an insertelement. This matches the sequence used by clangs intrinsic file.

Reviewers: zvi, delena, RKSimon

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D26660

llvm-svn: 287083

This has two advantages:
1) We slowly move away from ErrorOr to the new handling interface,
in the hope of having an uniform error handling in LLVM, eventually.
2) We're starting to have *meaningful* error messages for invalid
object ELF files, rather than a generic "parse error". At some point
we should include also the offset to improve the quality of the
diagnostic.

llvm-svn: 287081

Rather than using sed to generate the input and pipe the result to
strings, use the static input instead.

llvm-svn: 287079

Differential Revision: https://reviews.llvm.org/D26711

llvm-svn: 287077

Doing this before register allocation reduces register pressure as we do
not even have to allocate a register for those dead definitions.

Differential Revision: https://reviews.llvm.org/D26111

llvm-svn: 287076

llvm-svn: 287075

- Select `select` to `v_cndmask_b32`
- Expand `select_cc`
- Refactor patterns

Differential Revision: https://reviews.llvm.org/D26714

llvm-svn: 287074

Summary:
We update the documentation to define what the requirements are for the
provided XRay log handler. This is to make it clear that the function
pointer provided must do internal synchronisation and that there are no
guarantees provided by XRay on when the function shall be invoked once
it has been installed as a log handler.

Reviewers: rSerge, rengolin

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D26651

llvm-svn: 287073

In https://reviews.llvm.org/D25347, Geoff noticed that we still have
useless copy that we can eliminate after register allocation. At the
time the allocation is chosen for those copies, they are not useless
but, because of changes in the surrounding code, later on they might
become useless.
The Greedy allocator already has a mechanism to deal with such cases
with a late recoloring. However, we missed to record the some of the
missed hints.

This commit fixes that.

llvm-svn: 287070

This is required by DbiStream, but DbiStreamBuilder didn't align
these substreams, so the output of DbiSTreamBuilder couldn't be
read by DbiStream.

Test will be added to LLD.

llvm-svn: 287067

Reviewer: Michael Zolotukhin.
Differential Revision: https://reviews.llvm.org/D26575

llvm-svn: 287064

Summary:
We don't do BypassSlowDivision when the denominator is a constant, but
we do do it when the numerator is a constant.

This patch makes two related changes to BypassSlowDivision when the
numerator is a constant:

 * If the numerator is too large to fit into the bypass width, don't
   bypass slow division (because we'll never run the smaller-width
   code).

 * If we bypass slow division where the numerator is a constant, don't
   OR together the numerator and denominator when determining whether
   both operands fit within the bypass width.  We need to check only the
   denominator.

Reviewers: tra

Subscribers: llvm-commits, jholewinski

Differential Revision: https://reviews.llvm.org/D26699

llvm-svn: 287062

if (A || (B && A)) --> if (A).

llvm-svn: 287061

These numbers are intended to be capped at 65535, but
`std::max<uint16_t>(UINT16_MAX, N)` always returns N for any N because
the expression is the same as `std::max((uint16_t)UINT16_MAX, (uint16_t)N)`.

llvm-svn: 287060

For the default, small and medium code model, use the existing
difference from the jump table towards the label. For all other code
models, setup the picbase and use the difference between the picbase and
the block address.

Overall, this results in smaller data tables at the expensive of one or
two more arithmetic operation at the jump site. Given that we only create
jump tables with a lot more than two entries, it is a net win in size.
For larger code models the assumption remains that individual functions
are no larger than 2GB.

Differential Revision: https://reviews.llvm.org/D26336

llvm-svn: 287059

wbinvl.* are vector instruction that do not sue vector registers.

v2: check only M?BUF instructions

Differential Revision: https://reviews.llvm.org/D26633

llvm-svn: 287056

llvm-svn: 287051

To get a good error message for all files that could contain Mach-O
files the code in llvm-objdump needs to use the archive member name
and name of the architecture of a slice of a universal file in those cases
where the error come from a Mach-O file in an archive or a universal file.

Most of this is fixed by moving the call to checkSymbolTable() into
ProcessMachO() and calling it when the operation needs the symbol
table.  And then calling the form of report_error() that has the
ArchiveName and ArchitectureName arguments.  One other place
needed to call this form of report_error() also with these arguments.

Also changed the code in MachODump.cpp to not use report_fatal_error()
and use report_error() instead to make the code smaller and cleaner.  All
cases of this are for errors with the symbol table which should now never
be tripped since checkSymbolTable() should be called first to get a good
error message in these cases.

llvm-svn: 287050

llvm-svn: 287049

llvm-svn: 287048

This patch adds support for instrumenting masked loads and stores under
ASan, if they have a constant mask.

isInterestingMemoryAccess now supports returning a mask to be applied to
the loads, and instrumentMop will use it to generate additional checks.

Added tests for v4i32 v8i32, and v4p0i32 (~v4i64) for both loads and
stores (as well as a test to verify we don't add checks to non-constant
masks).

Differential Revision: https://reviews.llvm.org/D26230

llvm-svn: 287047