[X86] Add test cases to show missed opportunities to remove AND mask from BTC/BTS/BTR instructions when LHS of AND has known zeros.

We can currently remove the mask if the immediate has all ones in the LSBs, but if the LHS of the AND is known zero, then the immediate might have had bits removed.

A similar issue also occurs with shifts and rotates. I'm preparing a common fix for all of them.

llvm-svn: 354520

This is the 'sub0' (negate) pattern from PR31754:
https://bugs.llvm.org/show_bug.cgi?id=31754

llvm-svn: 354519

Summary:
Remove stores that are immediately overwritten by larger
stores.

Reviewers: courbet, rnk

Reviewed By: rnk

Subscribers: javed.absar, hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D58467

llvm-svn: 354518

Summary:
The analsis on the throwing behvaiour on functions and statements gave only
a binary answer whether an exception could occur and if yes which types are
thrown.
This refactoring allows keeping track if there is a unknown factor, because the
code calls to some functions with unavailable source code with no `noexcept`
information.
This 'potential Unknown' information is propagated properly and can be queried
separately.

Reviewers: lebedev.ri, aaron.ballman, baloghadamsoftware, alexfh

Reviewed By: lebedev.ri, baloghadamsoftware

Subscribers: xazax.hun, rnkovacs, a.sidorin, Szelethus, donat.nagy, dkrupp, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D57883

llvm-svn: 354517

Reviewers: arsenm

Reviewed By: arsenm

Subscribers: volkan, kzhuravl, jvesely, wdng, nhaehnle, yaxunl, rovka, kristof.beyls, dstuttard, tpr, t-tye, llvm-commits

Differential Revision: https://reviews.llvm.org/D52922

llvm-svn: 354516

Summary:
gcc warns that `__throw_runtime_error` is declared both in `<__locale>`
and `<stdexcept>`, if `-Wredundant-decls` is passed on the command
line; this is the case with FreeBSD when ${WARNS} == 6.

Since `<__locale>` gets its first declaration via a transitive include
of `<stdexcept>`, and the second declaration is after the first
invocation of `__throw_runtime_error`, delete that second declaration.

Signed-off-by: Enji Cooper <yaneurabeya@gmail.com>

Reviewers: kristina, MaskRay, EricWF, ldionne, ngie

Reviewed By: EricWF

Subscribers: krytarowski, brooks, emaste, dim, christof, jdoerfert, libcxx-commits

Tags: #libc

Differential Revision: https://reviews.llvm.org/D58425

llvm-svn: 354515

If the LHS has known zeros, then the RHS immediate mask might have been simplified to remove those bits.

This patch adds a call to computeKnownBits to get the known zeroes to handle that possibility. I left an early out to skip the call if all of the demanded bits are set in the mask.

Differential Revision: https://reviews.llvm.org/D58464

llvm-svn: 354514

Second part of https://bugs.llvm.org/show_bug.cgi?id=40442.

This adds an extra UnrollVectorOverflowOp() method to SDAG, because
the general UnrollOverflowOp() method can't deal with multiple results.

Additionally we need to expand UMULO/SMULO during vector op
legalization, as it may result in unrolling, which may need additional
type legalization.

Differential Revision: https://reviews.llvm.org/D57997

llvm-svn: 354513

We unconditionally predefine these macros. However, they may be used to
determine if the type is supported. In that case, there are unnecessary
failures to compile the code.

This is the proposed fix for https://bugs.llvm.org/show_bug.cgi?id=40559

Differential revision: https://reviews.llvm.org/D57577

llvm-svn: 354512

This avoids depending on the peephole pass to do load folding.

Also adds some load folding for some insert_subvector patterns that use blend.

All of this was found by temporarily adding TB_NO_FORWARD to the blend immediate entries in the load folding tables.

I've added -disable-peephole to some of the affected tests from that experiment to ensure we're testing isel patterns.

llvm-svn: 354511

Summary:
This adds support for defining patterns for global isel using pointer
types, for example:

def : Pat<(load GPR32:$src),
          (p1 (LOAD GPR32:$src))>;

DAGISelEmitter will ignore the pointer information and treat these
types as integers with the same bit-width as the pointer type.

Reviewers: dsanders, rtereshin, arsenm

Reviewed By: arsenm

Subscribers: Petar.Avramovic, wdng, rovka, kristof.beyls, jfb, volkan, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D57065

llvm-svn: 354510

llvm-svn: 354509

llvm-svn: 354508

Summary:
The assertion checking that a range of a node is a token range does
not hold in case of "split" tokens, e.g. between two closing template
argument lists (`vector<vector<int>>`).

Reviewers: kadircet, sammccall

Reviewed By: kadircet

Subscribers: ioeric, MaskRay, jkorous, arphaman, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D58447

llvm-svn: 354507

llvm-svn: 354506

Summary: To take up the .clangd folder for other potential uses in the future.

Reviewers: kadircet, sammccall

Reviewed By: kadircet

Subscribers: ioeric, MaskRay, jkorous, arphaman, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D58440

llvm-svn: 354505

llvm-svn: 354504

llvm-svn: 354503

Summary: This change mimics GCC's support for the "-static-pie" argument.

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D58307

llvm-svn: 354502

[X86] Add test case to show missed opportunity to remove an explicit AND on the bit position from BT when it has known zeros. NFC

If the bit position has known zeros in it, then the AND immediate will likely be optimized to remove bits.

This can prevent GetDemandedBits from recognizing that the AND is unnecessary.

llvm-svn: 354501

llvm-svn: 354500

Revert r354498 "[X86] Add test case to show missed opportunity to remove an explicit AND on the bit position from BT when it has known zeros."

I accidentally committed more than just the test.

llvm-svn: 354499

[X86] Add test case to show missed opportunity to remove an explicit AND on the bit position from BT when it has known zeros.

If the bit position has known zeros in it, then the AND immediate will likely be optimized to remove bits.

This can prevent GetDemandedBits from recognizing that the AND is unnecessary.

llvm-svn: 354498

Summary:
This test was failing in one of our setups because the generated ModuleID
had the full path of the test file and that path contained the string
BL.

Reviewers: t.p.northover, jpaquette, paquette

Reviewed By: paquette

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

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D58217

llvm-svn: 354497

NDEBUG is misspelled as NDBEBUG in include/llvm/Support/raw_ostream.h.

llvm-svn: 354495

Summary:
Its functionality is entirely covered by exec-run.test (which
doesn't use pexpect)

Reviewers: serge-sans-paille

Subscribers: ki.stfu, jdoerfert, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D58459

llvm-svn: 354494

This should have been part of r354490.

llvm-svn: 354493

Summary:
Following on from the review for D58088, this patch provides the
prerequisite to_address() implementation that's needed to have
pointer_iterator support unique_ptr.

The late bound return should be removed once we move to C++14 to better
align with the C++20 declaration. Also, this implementation can be removed
once we move to C++20 where it's defined as std::to_addres()

The std::pointer_traits<>::to_address(p) variations of these overloads has
not been implemented.

Reviewers: dblaikie, paquette

Reviewed By: dblaikie

Subscribers: dexonsmith, kristina, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D58421

llvm-svn: 354491

Every cycle, the Scheduler checks if instructions in the ReadySet can be issued
to the underlying pipelines. If an instruction cannot be issued because one or
more pipeline resources are unavailable, then field
Instruction::CriticalResourceMask is updated with the resource identifier of the
unavailable resources.

If an instruction cannot be promoted from the PendingSet to the ReadySet because
of a memory dependency, then field Instruction::CriticalMemDep is updated with
the identifier of the dependending memory instruction.

Bottleneck information is collected after every cycle for instructions that are
waiting to execute. The idea is to help identify causes of bottlenecks; this
information can be used in future to implement a bottleneck analysis.

llvm-svn: 354490

We currently bail if the target shuffle decodes to more than 2 input vectors, this is some initial cleanup that still has the limit but generalizes the opindices to an array that will be necessary when we drop the limit.

llvm-svn: 354489

Apparently this functionality is not expected to work on non-Darwin
systems. I should've checked the decorator on the original test.

llvm-svn: 354487

Summary:
Added the ability to emit target-specific builtin assembler error
messages only in case if the function is really is going to be emitted
for the device.

Reviewers: rjmccall

Subscribers: guansong, jdoerfert, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D58243

llvm-svn: 354486

Subscribers: jfb, cfe-commits

Differential Revision: https://reviews.llvm.org/D56896

llvm-svn: 354485

This patch adds two new tests for edge-case behaviour for --section-
mapping, namely when there are no program headers, and when there are no
section headers.

Reviewed by: mattd

Differential Revision: https://reviews.llvm.org/D58456

llvm-svn: 354484

llvm-svn: 354483

An extra semicolon at the end of macro invocations caused a build bot
failure for Intel's compiler when pedantic is turned on.

llvm-svn: 354482

This test wasn't running due to a missing : after the RUN statement.
Enabling this test revealed that it's actually broken.

Differential Revision: https://reviews.llvm.org/D58429

llvm-svn: 354481

Also complete the set of related operations.

llvm-svn: 354480

A faster way to reduce the values in teams reductions was found, the
codegen is updated to use this faster algorithm and new runtime functions.

llvm-svn: 354479

llvm-svn: 354477