[llvm-exegesis] Use TestBase for TargetTest (#121895)

This patch makes the PPC and X86 Exegesis TargetTests use TestBase to
provide initial setup rather than doing it themselves. This promotes
cod

[llvm-exegesis] Use TestBase for TargetTest (#121895)

This patch makes the PPC and X86 Exegesis TargetTests use TestBase to
provide initial setup rather than doing it themselves. This promotes
code reuse a little bit and makes the tests a bit more consistent (with
MIPS and with the initial RISC-V tests landing soon).

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[llvm-exegesis] Add explicit support for setting DF in X86 (#115644)

While llvm-exegesis has explicit support for setting EFLAGS which
contains DF, it can be nice sometimes to explicitly set DF, es

[llvm-exegesis] Add explicit support for setting DF in X86 (#115644)

While llvm-exegesis has explicit support for setting EFLAGS which
contains DF, it can be nice sometimes to explicitly set DF, especially
given that it is modeled as a separate register within LLVM. This patch
adds the ability to do that by lowering setting the value to 0 or 1 to
cld and std respectively.

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[llvm-exegesis] Use older instructions to load lower vregs (#114768)

This patch makes X86 llvm-exegesis unconditionally use older
instructions to load the lower vector registers, rather than trying

[llvm-exegesis] Use older instructions to load lower vregs (#114768)

This patch makes X86 llvm-exegesis unconditionally use older
instructions to load the lower vector registers, rather than trying to
use AVX512 for everything when available. This fixes a case where we
would try and load AVX512 registers using the older instructions if such
a snippet was constructed while -mcpu was set to something that did not
support AVX512. This would lead to a machine code verification error
rather than resulting in incomplete snippet setup, which seems to be the
intention of how this should work.

Fixes #114691.

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[llvm-exegesis] Switch from intptr_t to uintptr_t in most cases (#102860)

This patch switches most of the uses of intptr_t to uintptr_t within
llvm-exegesis for the subprocess memory support. In th

[llvm-exegesis] Switch from intptr_t to uintptr_t in most cases (#102860)

This patch switches most of the uses of intptr_t to uintptr_t within
llvm-exegesis for the subprocess memory support. In the vast majority of
cases we do not want a signed component of the address, hence making
intptr_t undesirable. intptr_t is left for error handling, for example
when making syscalls and we need to see if the syscall returned -1.

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[llvm-exegesis] Refactor MMAP platform-specific preprocessor directives (#75422)

This patch refactors the MMAP platform-specific preprocessor directives
in llvm-exegesis to a single file instead of

[llvm-exegesis] Refactor MMAP platform-specific preprocessor directives (#75422)

This patch refactors the MMAP platform-specific preprocessor directives
in llvm-exegesis to a single file instead of having duplicate code split
across multiple files. These originally got introduced to get buildbots
green again due to platform specific failures.

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[llvm-exegesis] Remove unused using decls (NFC)

Identified with misc-unused-using-decls.

[llvm-exegesis] Use mmap2 when mmap is unavailable to fix riscv32 build

Some 32-bit architectures don't have mmap and define mmap2 instead.
E.g. on riscv32 we may get

```
| /mnt/b/yoe/master/build/

[llvm-exegesis] Use mmap2 when mmap is unavailable to fix riscv32 build

Some 32-bit architectures don't have mmap and define mmap2 instead.
E.g. on riscv32 we may get

```
| /mnt/b/yoe/master/build/tmp/work-shared/llvm-project-source-17.0.0-r0/git/llvm/tools/llvm-exegesis/lib/X86/Target.cpp:1116:19: error: use of undeclared identifier 'SYS_mmap'
| 1116 | generateSyscall(SYS_mmap, MmapCode);
| | ^
| /mnt/b/yoe/master/build/tmp/work-shared/llvm-project-source-17.0.0-r0/git/llvm/tools/llvm-exegesis/lib/X86/Target.cpp:1134:19: error: use of undeclared identifier 'SYS_mmap'
| 1134 | generateSyscall(SYS_mmap, GeneratedCode); | | ^
| 1 warning and 2 errors generated.
```

Co-Authored-By: Fangrui Song <i@maskray.me>
Differential Revision: https://reviews.llvm.org/D158375

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[llvm-exegesis][NFC] Fix unused function 'IsMovRegToReg' warning

/scratch/powerllvm/powerllvm_env/aix-ppc64/clang-ppc64-aix/llvm-project/llvm/unittests/tools/llvm-exegesis/X86/TargetTest.cpp:88:17:

[llvm-exegesis][NFC] Fix unused function 'IsMovRegToReg' warning

/scratch/powerllvm/powerllvm_env/aix-ppc64/clang-ppc64-aix/llvm-project/llvm/unittests/tools/llvm-exegesis/X86/TargetTest.cpp:88:17: error: unused function 'IsMovRegToReg' [-Werror,-Wunused-function]
Matcher<MCInst> IsMovRegToReg(unsigned Opcode, int64_t Reg1, int64_t Reg2) {
1 error generated.

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[llvm-exegesis] Fix test failure caused by assymetric values

I fixed compilation on 32-bit ARM earlier in the -Werror case using
preprocessor directives but forgot to update the unit tests that also

[llvm-exegesis] Fix test failure caused by assymetric values

I fixed compilation on 32-bit ARM earlier in the -Werror case using
preprocessor directives but forgot to update the unit tests that also
depend upon that value. This patch updates the unit tests as well as a
quick fix for the builders that were broken by the earlier patch.

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[llvm-exegesis] Define SYS_mmap to be SYS_mmap2 on 32-bit ARM

llvm-exegesis currently isn't compiling on 32-bit ARM due to SYS_mmap
not being defined as 32-bit ARM instead uses SYS_mmap2. This patch

[llvm-exegesis] Define SYS_mmap to be SYS_mmap2 on 32-bit ARM

llvm-exegesis currently isn't compiling on 32-bit ARM due to SYS_mmap
not being defined as 32-bit ARM instead uses SYS_mmap2. This patch
defines SYS_mmap to be SYS_mmap2 in the relevant places to allow for
compilation to succeed.

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[llvm-exegesis] Define MAP_FIXED_NOREPLACE if not available

Some builders are currently failing as they don't have
MAP_FIXED_NOREPLACE available. This patch checks if MAP_FIXED_NOREPLACE
is availabl

[llvm-exegesis] Define MAP_FIXED_NOREPLACE if not available

Some builders are currently failing as they don't have
MAP_FIXED_NOREPLACE available. This patch checks if MAP_FIXED_NOREPLACE
is available and if it isn't, it is simply defined as MAP_FIXED.

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[llvm-exegesis] Add Target Memory Utility Functions

This patch adds in several functions to ExegesisTarget that will assist
in setting up memory for the planned memory annotations.

Reviewed By: cou

[llvm-exegesis] Add Target Memory Utility Functions

This patch adds in several functions to ExegesisTarget that will assist
in setting up memory for the planned memory annotations.

Reviewed By: courbet

Differential Revision: https://reviews.llvm.org/D151023

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[llvm-exegesis] `ExegesisX86Target::setRegTo()`: support mask (K) regs

This only supports the obvious case, where the requested width
is supported by the available ISA sed, and there is
an appropria

[llvm-exegesis] `ExegesisX86Target::setRegTo()`: support mask (K) regs

This only supports the obvious case, where the requested width
is supported by the available ISA sed, and there is
an appropriate, or wider, `KMOV?` instruction.

This doesn't deal with the 32/64 bit mask without BW instruction set.

This was the missing functionality that was
causing crashes in fd52305fdc7572534867247c8fb66093faf52e5c.

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[llvm-exegesis][NFC] Use factory function for LlvmState.

This allows failing more gracefully.

Move TargetRegistry.(h|cpp) from Support to MC

This moves the registry higher in the LLVM library dependency stack.
Every client of the target registry needs to link against MC anyway to
actually us

Move TargetRegistry.(h|cpp) from Support to MC

This moves the registry higher in the LLVM library dependency stack.
Every client of the target registry needs to link against MC anyway to
actually use the target, so we might as well move this out of Support.

This allows us to ensure that Support doesn't have includes from MC/*.

Differential Revision: https://reviews.llvm.org/D111454

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Merge all the llvm-exegesis unit tests into a single binary

These tests access private symbols in the backends, so they cannot link
against libLLVM.so and must be statically linked. Linking these t

Merge all the llvm-exegesis unit tests into a single binary

These tests access private symbols in the backends, so they cannot link
against libLLVM.so and must be statically linked. Linking these tests
can be slow and with debug builds the resulting binaries use a lot of
disk space.

By merging them into a single test binary means we now only need to
statically link 1 test instead of 6, which helps reduce the build
times and saves disk space.

Reviewed By: courbet

Differential Revision: https://reviews.llvm.org/D106464

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[llvm-exegesis] Serial snippet: Restrict the set of back-to-back instructions

Summary:
Right now when picking a back-to-back instruction at random, we might select
instructions that we do not know h

[llvm-exegesis] Serial snippet: Restrict the set of back-to-back instructions

Summary:
Right now when picking a back-to-back instruction at random, we might select
instructions that we do not know how to handle.
Add a ExegesisTarget hook to possibly filter instructions.

Reviewers: gchatelet

Subscribers: tschuett, mstojanovic, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D73161

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[llvm-exegesis][NFC] internal changes

Summary:
BitVectors are now cached to lower memory utilization.
Instructions have reference semantics.

Reviewers: courbet

Subscribers: sdardis, tschuett, jrtc

[llvm-exegesis][NFC] internal changes

Summary:
BitVectors are now cached to lower memory utilization.
Instructions have reference semantics.

Reviewers: courbet

Subscribers: sdardis, tschuett, jrtc27, atanasyan, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D71653

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[llvm-exegesis][NFC] Remove extra `llvm::` qualifications.

Summary: First patch: in unit tests.

Subscribers: nemanjai, tschuett, MaskRay, jsji, llvm-commits

Tags: #llvm

Differential Revision: htt

[llvm-exegesis][NFC] Remove extra `llvm::` qualifications.

Summary: First patch: in unit tests.

Subscribers: nemanjai, tschuett, MaskRay, jsji, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68687

llvm-svn: 374157

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[llvm-exegesis][NFC] Remove unecessary `using llvm::` directives.

We've been in namespace llvm for at least a year.

llvm-svn: 374143

[llvm-exegesis] Allow the target to disable the selection of some registers.

Summary:
This prevents "Cannot encode high byte register in REX-prefixed instruction"
from happening on instructions that

[llvm-exegesis] Allow the target to disable the selection of some registers.

Summary:
This prevents "Cannot encode high byte register in REX-prefixed instruction"
from happening on instructions that require REX encoding when AH & co
get selected.
On the down side, these 4 registers can no longer be selected
automatically, but this avoids having to expose all the X86 encoding
complexity.

Reviewers: gchatelet

Subscribers: tschuett, jdoerfert, llvm-commits, bdb

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59821

llvm-svn: 357003

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Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the ne

Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636

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[llvm-exegesis][NFC] Some code style cleanup

Apply review comments of https://reviews.llvm.org/D54185 to other target as well, specifically:

1. make anonymous namespaces as small as possible, avoid

[llvm-exegesis][NFC] Some code style cleanup

Apply review comments of https://reviews.llvm.org/D54185 to other target as well, specifically:

1. make anonymous namespaces as small as possible, avoid using static inside anonymous namespaces
2. Add missing header to some files
3. GetLoadImmediateOpcodem-> getLoadImmediateOpcode
4. Fix typo

Differential Revision: https://reviews.llvm.org/D54343

llvm-svn: 347309

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[llvm-exegesis][NFC] More tests for ExegesisTarget::fillMemoryOperands().

Reviewers: gchatelet

Subscribers: tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D54304

llvm-svn:

[llvm-exegesis][NFC] More tests for ExegesisTarget::fillMemoryOperands().

Reviewers: gchatelet

Subscribers: tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D54304

llvm-svn: 347209

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[llvm-exegesis] Move namespace exegesis inside llvm::

Summary:
This allows simplifying references of llvm::foo with foo when the needs
come in the future.

Reviewers: courbet, gchatelet

Reviewed By

[llvm-exegesis] Move namespace exegesis inside llvm::

Summary:
This allows simplifying references of llvm::foo with foo when the needs
come in the future.

Reviewers: courbet, gchatelet

Reviewed By: gchatelet

Subscribers: javed.absar, tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D53455

llvm-svn: 344922

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