foldOpIntoPhi() currently only folds operations into the phi if all
but one operands constant-fold. The two exceptions to this are freeze
and select, where we allow more general simplification.

This patch makes foldOpIntoPhi() generally simplification based and
removes all the instruction-specific logic. We just try to simplify
the instruction for each operand, and for the (potentially) one
non-simplified operand, we move it into the new block with adjusted
operands.

This fixes https://github.com/llvm/llvm-project/issues/57448, which
was my original motivation for the change.

This patch updates lowering to produce the correct fir.class types for
various polymorphic and unlimited polymoprhic entities cases. This is only the
lowering. Some TODOs have been added to the CodeGen part to avoid errors since
this part still need to be updated as well.
The fir.class<*> representation for unlimited polymorphic entities mentioned in
the document has been updated to fir.class<none> to avoid useless work in pretty
parse/printer.

This patch is part of the implementation of the poltymorphic
entities.
https://github.com/llvm/llvm-project/blob/main/flang/docs/PolymorphicEntities.md

Depends on D134957

Reviewed By: jeanPerier

Differential Revision: https://reviews.llvm.org/D134959

Simplify LoopAccessLegacyAnalysis by using LoopAccessInfoManager from
D134606. As a side-effect this also removes printing support from
LoopAccessLegacyAnalysis.

Depends on D134606.

Reviewed By: aeubanks

Differential Revision: https://reviews.llvm.org/D134608

Add a check to detect usages of `realloc` where the result is assigned
to the same variable (or field) as passed to the first argument.

Reviewed By: steakhal, martong

Differential Revision: https://reviews.llvm.org/D133119

Differential Revision: https://reviews.llvm.org/D134968

The -slab-page-size option is used to set a simulated page size in -no-exec
tests. In order for this to work we need to use read/write permissions only
on all simulated pages in order to ensure that no simulated page is made
read-only by a permission change to the underlying real page.

The aim of this patch is to make it safe to enable ExecutionEngine regression
tests on arm64. Those tests will be enabled in a follow-up patch.

One of the sources is the same size as the destination so that source
doesn't have an overlap with the destination register. By using the _TIED
form we avoid an early clobber contraint for that source.

This matches what was already done for instrinsics. ConvertToThreeAddress
will fix it if it can't stay tied.

We want to emit a masked setcc that preserves zeros in all of the bits
where the original mask is zero. To do this we need to pass the original
mask as the passthru operand as well. Otherwise, we'll use the mask agnostic
policy and replace the zeros with 1s on some CPUs.

Differential Revision: https://reviews.llvm.org/D135122

Move getWindowsProtectionFlags inside namespace to make MemProt type accessible.

That patch failed to include an update to the Windows side of
ExecutorSharedMemoryMapperService.

Moving these types to OrcShared eliminates the need for the separate
WireProtectionFlags type.

Differential Revision: https://reviews.llvm.org/D134696

	deleted:    202209301111.patch

This addresses the long-standing FIXME in the test. I would like to
update the test, and objdump's output is a lot more readable / editable
than readobj's.

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D134690

When debuging a crash or conversion failure in a deep pass pipeline,
there are often many interleaved frames with `failed` and `succeeded`.
`LogicalResult` is used through the pass infrastructure, so by not implementing
failure in terms of a call to succeess, this patch noticeably reduces the total
total call stack depth and improves the debugging experience.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D135116

Differential Revision: https://reviews.llvm.org/D134696

	modified:   mlir/examples/standalone/standalone-translate/standalone-translate.cpp
	modified:   mlir/include/mlir/Tools/mlir-translate/Translation.h
	modified:   mlir/lib/Target/Cpp/TranslateRegistration.cpp
	modified:   mlir/lib/Target/LLVMIR/ConvertFromLLVMIR.cpp
	modified:   mlir/lib/Target/LLVMIR/ConvertToLLVMIR.cpp
	modified:   mlir/lib/Target/SPIRV/TranslateRegistration.cpp
	modified:   mlir/lib/Tools/mlir-translate/Translation.cpp

The synchronous callbacks are not intended to start the target running
during the callback, and doing so is flakey.  This patch converts them
to being regular async callbacks, and adds some testing for sequential
reports that have caused problems in the field.

Differential Revision: https://reviews.llvm.org/D134927

There are a few issues with the code we generate for atomic operations and the way we generate it:

- Hard coded CR0 for compares
- Order of operands for compares not conducive to
  emitting compare-immediate or for CSE of compares
- Missing MachineMemOperand for st[bhwd]cx intrinsics
- Missing intrinsic properties for the same
- Unnecessary blocks with store conditional
  instructions to clear reservation (which ends
  up hindering performance)
- Move from CR instructions just to compare the
  result of a store conditional with zero (even
  though it is a record-form)

This patch aims to resolve all of those issues.

Differential revision: https://reviews.llvm.org/D134783

Prior to this change, `CurrentGSYMPath` was never updated. As a consequence, the GSYM file was reopened for every frame, even if all frames were relative to the same GSYM file.

This change brings a 13x speedup on a test I'm doing (symbolizing ~25K frames from libxul)

(This is my first-ever LLVM change - sorry if I missed something in the process!)

Reviewed By: simon.giesecke, clayborg

Differential Revision: https://reviews.llvm.org/D132912

- Add support -Bdynamic/-Bstatic and their aliases
- Add support for `--library` and `--library-path` long form args
- Add test based on test/ELF/libsearch.s
- In `-Bdynamic` mode search for `.so` files in preference to `.a`.
- Unlike ELF continue to default to static mode until `-pie` or
  `-shared` are used.

Differential Revision: https://reviews.llvm.org/D135087

D128745 handled DR1432 for the partial ordering of partial specializations, but
missed the handling for the partial ordering of function templates. This patch
implements the latter. While at it, also simplifies the previous implementation to
be more close to the wording without functional changes.

Fixes https://github.com/llvm/llvm-project/issues/56090

Reviewed By: erichkeane, #clang-language-wg, mizvekov

Differential Revision: https://reviews.llvm.org/D133683

Also fix some lines that should have been DEBUG-NEXT, which made it a bit harder to
see what was happening here.

Previously, it was possible to load dynamic libraries which would be unloaded on llvm_shutdown(), but recently ManagedStatic removal changed this so that loaded libraries really can't ever be unloaded. This functionality was very useful, and so to add it back in a more explicit way, I've added new getLibrary() and closeLibrary() methods to allow callers to use the very convenient platform independent abstraction that LLVM has for dynamic libraries.

As a specific use case, the onnx-mlir project was using this functionality with an API that allows instancing LLVM so you can compile a shared library, and then load that library, and eventually close the instance (and library) and compile something else. This change to llvm_shutdown causes libraries to leak and also locks the libraries for the entire duration of the program which prevents reusing library names.

Reviewed By: lhames

Differential Revision: https://reviews.llvm.org/D134763

Uses the library introduced in https://reviews.llvm.org/D132504 to add build ID fetching to llvm-objdump. This allows viewing source when disassembling stripped objects.

Reviewed By: jhenderson

Differential Revision: https://reviews.llvm.org/D131224

Ports:
- core feature: https://reviews.llvm.org/D67039
- case mismatch: https://reviews.llvm.org/D70506
- extern "C" suggestions: https://reviews.llvm.org/D69592,
  https://reviews.llvm.org/D69650

Does not port https://reviews.llvm.org/D71735 since I believe that that doesn't
apply to lld/Mach-O.

Differential Revision: https://reviews.llvm.org/D135038

* Remove -no-canonical-prefixes. See 98067998
* Test a.out and %t.out in few tests and remove excess `-o %t.o`
* Avoid wrapping lines too aggresstively
* Replace `"{{[^"]*}}ld{{(\.(lld|bfd|gold))?}}{{(\.exe)?}}"` with `ld{{(.exe)?}}"`. The new pattern supports more CLANG_DEFAULT_LINKER.

This patch enables libc++ build as shared library in all combinations of ASCII/EBCDIC and 32-bit/64-bit variants. In particular it introduces:

  # ASCII version of libc++ named as libc++_a.so
  # Script to rename DLL name inside the generated side deck
  # Various names for dataset members where DLL libraries and their side decks will reside
  # Add the following options:

   - LIBCXX_SHARED_OUTPUT_NAME
   - LIBCXX_ADDITIONAL_COMPILE_FLAGS
   - LIBCXX_ADDITIONAL_LIBRARIES
   - LIBCXXABI_ADDITIONAL_COMPILE_FLAGS
   - LIBCXXABI_ADDITIONAL_LIBRARIES

**Background and rational of this patch**

The linker on z/OS creates a list of exported symbols in a file called side deck. The list contains the symbol name as well as the name of the DLL which implements the symbol. The name of the DLL depends on what is specified in the -o command line option. If it points to a USS file, than the DLL name in the side deck will be the USS file name. If it points to a ...

Noticed this falling back on CTMark at -Os (bullet).

Seems like we have no 1:1 matching for it, so match SDAG and just lower.

Add testcases for common legal cases as well.

Differential Revision: https://reviews.llvm.org/D135111

Reviewed By: Peiming

Differential Revision: https://reviews.llvm.org/D135105

Reviewed By: aeubanks

Differential Revision: https://reviews.llvm.org/D134916

This reverts commit 11adae50.
There are multiple aspects this change is not appealing.

* They conflict with JoinedOrSeparate `-o`. The old exception `-objc-*`
  should not be used an excuse.
* We generally want new options to be more rigid and avoid multiple
  spellings.
* If users get used to `-offload-*`, a misspelled `-offload-*` option still
  gets passed as `-o ffloat-*` without being detected.

Before this patch the code in printScalarConstant was unable to handle
nested constant expressions like (gep (addrspacecast ptr)) and crashed
with:

LLVM ERROR: Unsupported expression in static initializer:
  addrspacecast ([4 x i8] addrspace(1)* @ga to [4 x i8]*)

We can use lowerConstantForGV instead which is a customized version of
lowerConstant that supports generic() and nested expressions.

Differential Revision: https://reviews.llvm.org/D127878