[clang][cli] CompilerInvocationTest: join two test fixtures into one

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D92825

[clang][cli] Port Frontend option flags to new option parsing system

Depends on D91861.

Reviewed By: dexonsmith

Original patch by Daniel Grumberg.

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

[clang][cli] Port Frontend option flags to new option parsing system

Depends on D91861.

Reviewed By: dexonsmith

Original patch by Daniel Grumberg.

Differential Revision: https://reviews.llvm.org/D83697

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[clang][cli] Split DefaultAnyOf into a default value and ImpliedByAnyOf

This makes the options API composable, allows boolean flags to imply non-boolean values and makes the code more logical (IMO).

[clang][cli] Split DefaultAnyOf into a default value and ImpliedByAnyOf

This makes the options API composable, allows boolean flags to imply non-boolean values and makes the code more logical (IMO).

Differential Revision: https://reviews.llvm.org/D91861

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Port some floating point options to new option marshalling infrastructure

This ports a number of OpenCL and fast-math flags for floating point
over to the new marshalling infrastructure.

As part of

Port some floating point options to new option marshalling infrastructure

This ports a number of OpenCL and fast-math flags for floating point
over to the new marshalling infrastructure.

As part of this, `Opt{In,Out}FFlag` were enhanced to allow other flags to
imply them, via `DefaultAnyOf<>`. For example:
```
defm signed_zeros : OptOutFFlag<"signed-zeros", ...,
"LangOpts->NoSignedZero",
DefaultAnyOf<[cl_no_signed_zeros, menable_unsafe_fp_math]>>;
```
defines `-fsigned-zeros` (`false`) and `-fno-signed-zeros` (`true`)
linked to the keypath `LangOpts->NoSignedZero`, defaulting to `false`,
but set to `true` implicitly if one of `-cl-no-signed-zeros` or
`-menable-unsafe-fp-math` is on.

Note that the initial patch was written Daniel Grumberg.

Differential Revision: https://reviews.llvm.org/D82756

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Ensure that CompilerInvocationTest normalizes default target triples

This fixes a build failure. More details at http://lab.llvm.org:8011/builders/llvm-clang-win-x-armv7l/builds/78/steps/test-check-

Ensure that CompilerInvocationTest normalizes default target triples

This fixes a build failure. More details at http://lab.llvm.org:8011/builders/llvm-clang-win-x-armv7l/builds/78/steps/test-check-clang/logs/FAIL%3A%20Clang-Unit%3A%3ACC1CommandLineGenerationTest.CanGenerateCC1CommandLineSeparateRequiredAbsent

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[unittest] Fix FrontendTests CanGenerateCC1CommandLineFlag when LLVM_DEFAULT_TARGET_TRIPLE is not normalized after D79796

`TargetOpts->Triple` is initialized as llvm::sys::getDefaultTargetTriple() w

[unittest] Fix FrontendTests CanGenerateCC1CommandLineFlag when LLVM_DEFAULT_TARGET_TRIPLE is not normalized after D79796

`TargetOpts->Triple` is initialized as llvm::sys::getDefaultTargetTriple() which may not be normalized.
If LLVM_DEFAULT_TARGET_TRIPLE is powerpc64le-linux-gnu, we should check
check `-triple powerpc64le-linux-gnu`, instead of (normalized) `-triple powerpc64le-unknown-linux-gnu`

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Start adding support for generating CC1 command lines from CompilerInvocation

This change includes the following:
- Add additional information in the relevant table-gen files to encode
the necessary

Start adding support for generating CC1 command lines from CompilerInvocation

This change includes the following:
- Add additional information in the relevant table-gen files to encode
the necessary information to automatically parse the argument into a
CompilerInvocation instance and to generate the appropriate command
line argument from a CompilerInvocation instance.
- Extend OptParserEmitter to emit the necessary macro tables as well as
constant tables to support parsing and generating command line
arguments for options that provide the necessary information.
- Port some options to use this new system for parsing and generating
command line arguments.

Differential Revision: https://reviews.llvm.org/D79796

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