This is a really silly bug that even a simple test w/an unconditional latch would have caught.  I tried to guard against the case, but put it in the wrong if check.  Oops.

llvm-svn: 362727

Use size_t for position which is the return type type ArrayRef::size()
it is compared to.

llvm-svn: 362724

This patch is the first step towards ensuring MergeConsecutiveStores correctly handles non-temporal loads\stores:

1 - When merging load\stores we must ensure that they all have the same non-temporal flag. This is unlikely to occur, but can in strange cases where we're storing at the end of one page and the beginning of another.

2 - The merged load\store node must retain the non-temporal flag.

Differential Revision: https://reviews.llvm.org/D62910

llvm-svn: 362723

Reviewed By: ruiu

Differential Revision: https://reviews.llvm.org/D62940

llvm-svn: 362722

Many -static/-no-pie/-shared/-pie applications linked against glibc or musl
should work with this patch. This also helps FreeBSD PowerPC64 to migrate
their lib32 (PR40888).

* Fix default image base and max page size.
* Support new-style Secure PLT (see below). Old-style BSS PLT is not
  implemented, so it is not suitable for FreeBSD rtld now because it doesn't
  support Secure PLT yet.
* Support more initial relocation types:
  R_PPC_ADDR32, R_PPC_REL16*, R_PPC_LOCAL24PC, R_PPC_PLTREL24, and R_PPC_GOT16.
  The addend of R_PPC_PLTREL24 is special: it decides the call stub PLT type
  but it should be ignored for the computation of target symbol VA.
* Support GNU ifunc
* Support .glink used for lazy PLT resolution in glibc
* Add a new thunk type: PPC32PltCallStub that is similar to PPC64PltCallStub.
  It is used by R_PPC_REL24 and R_PPC_PLTREL24.

A PLT stub used in -fPIE/-fPIC usually loads an address relative to
.got2+0x8000 (-fpie/-fpic code uses _GLOBAL_OFFSET_TABLE_ relative
addresses).
Two .got2 sections in two object files have different addresses, thus a PLT stub
can't be shared by two object files. To handle this incompatibility,
change the parameters of Thunk::isCompatibleWith to
`const InputSection &, const Relocation &`.

PowerPC psABI specified an old-style .plt (BSS PLT) that is both
writable and executable. Linkers don't make separate RW- and RWE segments,
which causes all initially writable memory (think .data) executable.
This is a big security concern so a new PLT scheme (secure PLT) was developed to
address the security issue.

TLS will be implemented in D62940.

glibc older than ~2012 requires .rela.dyn to include .rela.plt, it can
not handle the DT_RELA+DT_RELASZ == DT_JMPREL case correctly. A hack
(not included in this patch) in LinkerScript.cpp addOrphanSections() to
work around the issue:

    if (Config->EMachine == EM_PPC) {
      // Older glibc assumes .rela.dyn includes .rela.plt
      Add(In.RelaDyn);
      if (In.RelaPlt->isLive() && !In.RelaPlt->Parent)
        In.RelaDyn->getParent()->addSection(In.RelaPlt);
    }

Reviewed By: ruiu

Differential Revision: https://reviews.llvm.org/D62464

llvm-svn: 362721

llvm-svn: 362720

llvm-svn: 362719

llvm-svn: 362718

Same as what is supported for the unmasked form.

llvm-svn: 362717

Test cases

Author: Sajjad Mirza

Differential Revision: http://reviews.llvm.org/D62541

llvm-svn: 362716

llvm-svn: 362715

This will be used by lld's powerpc port.

llvm-svn: 362713

[NFC][CodeGen] Add unary fneg tests to fp-fast.ll fp-fold.ll fp-in-intregs.ll fp-stack-compare-cmov.ll fp-stack-compare.ll fsxor-alignment.ll

llvm-svn: 362712

Summary: Dependence Analysis performs static checks to confirm validity
of delinearization. These checks often fail for 64-bit targets due to
type conversions and integer wrapping that prevent simplification of the
SCEV expressions. These checks would also fail at compile-time if the
lower bound of the loops are compile-time unknown.

For example:

void foo(int n, int m, int a[][m]) {
  for (int i = 0; i < n; ++i)
    for (int j = 0; j < m; ++j) {
      a[i][j] = a[i+1][j-2];
    }
}

opt -mem2reg -instcombine -indvars -loop-simplify -loop-rotate -inline
-pass-remarks=.* -debug-pass=Arguments
-da-permissive-validity-checks=false k3.ll -analyze -da
will produce the following by default:

da analyze - anti [* *|<]!
but will produce the following expected dependence vector if the
validity checks are disabled:

da analyze - consistent anti [1 -2]!
This revision will introduce a debug option that will leave the validity
checks in place by default, but allow them to be turned off. New tests
are added for cases where it cannot be proven at compile-time that the
individual subscripts stay in-bound with respect to a particular
dimension of an array. These tests enable the option to provide user
guarantee that the subscripts do not over/under-flow into other
dimensions, thereby producing more accurate dependence vectors.

For prior discussion on this topic, leading to this change, please see
the following thread:
http://lists.llvm.org/pipermail/llvm-dev/2019-May/132372.html

Reviewers: Meinersbur, jdoerfert, kbarton, dmgreen, fhahn
Reviewed By: Meinersbur, jdoerfert, dmgreen
Subscribers: fhahn, hiraditya, javed.absar, llvm-commits, Whitney,
etiotto
Tag: LLVM
Differential Revision: https://reviews.llvm.org/D62610

llvm-svn: 362711

@test10 is the same as @test11.

llvm-svn: 362710

The checks were added in r362673 and r362672.

llvm-svn: 362709

Summary:
This patch implements SDAG call lowering on AIX for functions
which only have parameters that could fit into GPRs.

Reviewers: hubert.reinterpretcast, syzaara

Differential Revision: https://reviews.llvm.org/D62823

llvm-svn: 362708

Summary: `change()` is an all purpose function; the revision adds simple shortcuts for the specific operations of inserting (before/after) or removing source.

Reviewers: ilya-biryukov

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D62621

llvm-svn: 362707

Correct the fix of rL3627011, the isValueDependent guard was added in a wrong place in rL362701.

llvm-svn: 362706

Summary:
This patch is part of a patch series to add support for FileCheck
numeric expressions. This specific patch introduces support for defining
numeric variable in a CHECK directive.

This commit introduces support for defining numeric variable from a
litteral value in the input text. Numeric expressions can then use the
variable provided it is on a later line.

Copyright:
    - Linaro (changes up to diff 183612 of revision D55940)
    - GraphCore (changes in later versions of revision D55940 and
                 in new revision created off D55940)

Reviewers: jhenderson, chandlerc, jdenny, probinson, grimar, arichardson, rnk

Subscribers: hiraditya, llvm-commits, probinson, dblaikie, grimar, arichardson, tra, rnk, kristina, hfinkel, rogfer01, JonChesterfield

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60386

llvm-svn: 362705

This patch implements the "CREATE_THIN" MRI script command, allowing thin archives to be created via MRI scripts. 

Differential Revision: https://reviews.llvm.org/D62919

llvm-svn: 362704

llvm-svn: 362703

Instantiate a ClangTidyDiagnosticConsumer also for the plugin case and
let it forward the diagnostics to the external diagnostic engine that is
already in place.

One minor difference to the clang-tidy executable case is that the
compiler checks/diagnostics are referred to with their original name.
For example, for -Wunused-variable the plugin will refer to the check as
"-Wunused-variable" while the clang-tidy executable will refer to that
as "clang-diagnostic- unused-variable". This is because the compiler
diagnostics never reach ClangTidyDiagnosticConsumer.

Differential Revision: https://reviews.llvm.org/D61487

llvm-svn: 362702

Summary:
The assertion "isIntegerConstantExpr" is triggered in the
isIntegerConstantExpr(), we should not call it if the expression is value
dependent.

Reviewers: gribozavr

Subscribers: xazax.hun, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D62947

llvm-svn: 362701

This patch is a follow up for D62018 to add lrint/llrint
support for float16.

Reviewed By: SjoerdMeijer

Differential Revision: https://reviews.llvm.org/D62863

llvm-svn: 362700

This reverts commit r362687. Miscompiles llvm-profdata during selfhost.

llvm-svn: 362699

This patch is a follow up for D61391 to add lround/llround
support for float16.

Reviewed By: SjoerdMeijer

Differential Revision: https://reviews.llvm.org/D62861

llvm-svn: 362698

llvm-svn: 362697

llvm-svn: 362696

Prep work for PR42105 - clang-format, use auto for cast and merge nested if()s

llvm-svn: 362695

Tabs are not our friends.

llvm-svn: 362694

Adds missing lit.local.cfg. Fixes rL362691.

llvm-svn: 362693

Select G_FSQRT for MIPS32.

Differential Revision: https://reviews.llvm.org/D62905

llvm-svn: 362692

Differential Revision: https://reviews.llvm.org/D61185

llvm-svn: 362691

Select G_FABS for MIPS32.

Differential Revision: https://reviews.llvm.org/D62903

llvm-svn: 362690

Select G_FPEXT and G_FPTRUNC for MIPS32.

Differential Revision: https://reviews.llvm.org/D62902

llvm-svn: 362689

Select G_FFLOOR and G_FCEIL for MIPS32.

Differential Revision: https://reviews.llvm.org/D62901

llvm-svn: 362688

If the given SCEVExpr has no (un)signed flags attached to it, transfer
these to the resulting instruction or use them to find an existing
instruction.

Differential Revision: https://reviews.llvm.org/D61934

llvm-svn: 362687

ContainsActiveParameter is not used anywhere, set incorrectly (see the
removed FIXME) and has no unit tests.
Removing it to simplify the code.

llvm-svn: 362686

For more details about these instructions, please refer to the latest
ISE document:
https://software.intel.com/en-us/download/intel-architecture-instruction-set-extensions-programming-reference.

Patch by Tianqing Wang (tianqing)

Differential Revision: https://reviews.llvm.org/D62282

llvm-svn: 362685