[MLIR] Add a BlobAttr interface for attribute to wrap arbitrary content and use it as linkLibs for ModuleToObject (#120116)

This change allows to expose through an interface attributes wrapping
cont

[MLIR] Add a BlobAttr interface for attribute to wrap arbitrary content and use it as linkLibs for ModuleToObject (#120116)

This change allows to expose through an interface attributes wrapping
content as external resources, and the usage inside the ModuleToObject
show how we will be able to provide runtime libraries without relying on
the filesystem.

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[mlir][fix] Add callback functions for ModuleToObject (#116916)

Here is the [merged
MR](https://github.com/llvm/llvm-project/pull/116007) which caused a
failure and [was
reverted](https://github.com

[mlir][fix] Add callback functions for ModuleToObject (#116916)

Here is the [merged
MR](https://github.com/llvm/llvm-project/pull/116007) which caused a
failure and [was
reverted](https://github.com/llvm/llvm-project/pull/116811).

Thanks to @joker-eph for the help, I fix it (miss constructing
`ModuleObject` with callback functions in
`mlir/lib/Target/LLVM/NVVM/Target.cpp`) and split unit tests from origin
test which don't need `ptxas` to make the test runs more widely.

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Revert "[MLIR] Add callback functions for ModuleToObject" (#116811)

Reverts llvm/llvm-project#116007

Bot is broken.

[MLIR] Add callback functions for ModuleToObject (#116007)

In ModuleToObject flow, users may want to add some callback functions
invoked with LLVM IR/ISA for debugging or other purposes.

[mlir] Reland 5a6e52d6ef96d2bcab6dc50bdb369662ff17d2a0 with update (NFC)

Excluded updates to mlir/lib/AsmParser/Parser.cpp ,
which caused LIT failure "FAIL: MLIR::completion.test" on multiple buildb

[mlir] Reland 5a6e52d6ef96d2bcab6dc50bdb369662ff17d2a0 with update (NFC)

Excluded updates to mlir/lib/AsmParser/Parser.cpp ,
which caused LIT failure "FAIL: MLIR::completion.test" on multiple buildbots.

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Revert "[mlir] Nits on uses of llvm::raw_string_ostream (NFC)"

This reverts commit 5a6e52d6ef96d2bcab6dc50bdb369662ff17d2a0.

"FAIL: MLIR::completion.test" on multiple buildbots.

[mlir] Nits on uses of llvm::raw_string_ostream (NFC)

* Strip calls to raw_string_ostream::flush(), which is essentially a no-op
* Strip unneeded calls to raw_string_ostream::str(), to avoid excess

[mlir] Nits on uses of llvm::raw_string_ostream (NFC)

* Strip calls to raw_string_ostream::flush(), which is essentially a no-op
* Strip unneeded calls to raw_string_ostream::str(), to avoid excess indirection.

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Refactor ModuleToObject to offer more flexibility to subclass (NFC)

Some specific implementation of the offload may want more customization, and
even avoid using LLVM in-tree to dispatch the ISA tra

Refactor ModuleToObject to offer more flexibility to subclass (NFC)

Some specific implementation of the offload may want more customization, and
even avoid using LLVM in-tree to dispatch the ISA translation to a custom
solution. This refactoring makes it possible for such implementation to work
without even configuring the target backend in LLVM.

Reviewers: fabianmcg

Reviewed By: fabianmcg

Pull Request: https://github.com/llvm/llvm-project/pull/71165

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[NFC][CodeGen] Change CodeGenOpt::Level/CodeGenFileType into enum classes (#66295)

This will make it easy for callers to see issues with and fix up calls
to createTargetMachine after a future chang

[NFC][CodeGen] Change CodeGenOpt::Level/CodeGenFileType into enum classes (#66295)

This will make it easy for callers to see issues with and fix up calls
to createTargetMachine after a future change to the params of
TargetMachine.

This matches other nearby enums.

For downstream users, this should be a fairly straightforward
replacement,
e.g. s/CodeGenOpt::Aggressive/CodeGenOptLevel::Aggressive
or s/CGFT_/CodeGenFileType::

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[mlir] Prefer to use empty to check for emptiness (NFC)

[mlir][Target][LLVM] Adds an utility class for serializing operations to binary strings.

**For an explanation of these patches see D154153.**

Commit message:
This patch adds the utility base class

[mlir][Target][LLVM] Adds an utility class for serializing operations to binary strings.

**For an explanation of these patches see D154153.**

Commit message:
This patch adds the utility base class `ModuleToObject`. This class provides an
interface for compiling module operations into binary strings, by default this
class serialize modules to LLVM bitcode.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D154100

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[mlir][Target][LLVM] Adds an utility class for serializing operations to binary strings.

**For an explanation of these patches see D154153.**

Commit message:
This patch adds the utility base class

[mlir][Target][LLVM] Adds an utility class for serializing operations to binary strings.

**For an explanation of these patches see D154153.**

Commit message:
This patch adds the utility base class `ModuleToObject`. This class provides an
interface for compiling module operations into binary strings, by default this
class serialize modules to LLVM bitcode.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D154100

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