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# 9da697e1 14-Jun-2022 Balazs Benics <[email protected]>

Reland "[analyzer] Deprecate the unused 'analyzer-opt-analyze-nested-blocks' cc1 flag"

It was previously reverted by 8406839d1926486de900c7cabeea9f841bd3edf2.

---

This flag was introduced by
https

Reland "[analyzer] Deprecate the unused 'analyzer-opt-analyze-nested-blocks' cc1 flag"

It was previously reverted by 8406839d1926486de900c7cabeea9f841bd3edf2.

---

This flag was introduced by
https://github.com/llvm/llvm-project/commit/6818991d7165f68fe196922d9e5c6648dd57cc47
commit 6818991d7165f68fe196922d9e5c6648dd57cc47
Author: Ted Kremenek <[email protected]>
Date: Mon Dec 7 22:06:12 2009 +0000

Add clang-cc option '-analyzer-opt-analyze-nested-blocks' to treat
block literals as an entry point for analyzer checks.

The last reference was removed by this commit:
https://github.com/llvm/llvm-project/commit/5c32dfc5fb1cfcff8ae3671284e17daa8da3a188

commit 5c32dfc5fb1cfcff8ae3671284e17daa8da3a188
Author: Anna Zaks <[email protected]>
Date: Fri Dec 21 01:19:15 2012 +0000

[analyzer] Add blocks and ObjC messages to the call graph.
This paves the road for constructing a better function dependency graph.
If we analyze a function before the functions it calls and inlines,
there is more opportunity for optimization.
Note, we add call edges to the called methods that correspond to
function definitions (declarations with bodies).

Consequently, we should remove this dead flag.
However, this arises a couple of burning questions.
- Should the `cc1` frontend still accept this flag - to keep
tools/users passing this flag directly to `cc1` (which is unsupported,
unadvertised) working.
- If we should remain backward compatible, how long?
- How can we get rid of deprecated and obsolete flags at some point?

Reviewed By: martong

Differential Revision: https://reviews.llvm.org/D126067

show more ...


# ffe7950e 14-Jun-2022 Balazs Benics <[email protected]>

Reland "[analyzer] Deprecate `-analyzer-store region` flag"

I'm trying to remove unused options from the `Analyses.def` file, then
merge the rest of the useful options into the `AnalyzerOptions.def`

Reland "[analyzer] Deprecate `-analyzer-store region` flag"

I'm trying to remove unused options from the `Analyses.def` file, then
merge the rest of the useful options into the `AnalyzerOptions.def`.
Then make sure one can set these by an `-analyzer-config XXX=YYY` style
flag.
Then surface the `-analyzer-config` to the `clang` frontend;

After all of this, we can pursue the tablegen approach described
https://discourse.llvm.org/t/rfc-tablegen-clang-static-analyzer-engine-options-for-better-documentation/61488

In this patch, I'm proposing flag deprecations.
We should support deprecated analyzer flags for exactly one release. In
this case I'm planning to drop this flag in `clang-16`.

In the clang frontend, now we won't pass this option to the cc1
frontend, rather emit a warning diagnostic reminding the users about
this deprecated flag, which will be turned into error in clang-16.

Unfortunately, I had to remove all the tests referring to this flag,
causing a mass change. I've also added a test for checking this warning.

I've seen that `scan-build` also uses this flag, but I think we should
remove that part only after we turn this into a hard error.

Reviewed By: martong

Differential Revision: https://reviews.llvm.org/D126215

show more ...


Revision tags: llvmorg-14.0.5
# 07b4a6d0 10-Jun-2022 Balazs Benics <[email protected]>

[analyzer] Deprecate the unused 'analyzer-opt-analyze-nested-blocks' cc1 flag

This flag was introduced by
https://github.com/llvm/llvm-project/commit/6818991d7165f68fe196922d9e5c6648dd57cc47
com

[analyzer] Deprecate the unused 'analyzer-opt-analyze-nested-blocks' cc1 flag

This flag was introduced by
https://github.com/llvm/llvm-project/commit/6818991d7165f68fe196922d9e5c6648dd57cc47
commit 6818991d7165f68fe196922d9e5c6648dd57cc47
Author: Ted Kremenek <[email protected]>
Date: Mon Dec 7 22:06:12 2009 +0000

Add clang-cc option '-analyzer-opt-analyze-nested-blocks' to treat
block literals as an entry point for analyzer checks.

The last reference was removed by this commit:
https://github.com/llvm/llvm-project/commit/5c32dfc5fb1cfcff8ae3671284e17daa8da3a188

commit 5c32dfc5fb1cfcff8ae3671284e17daa8da3a188
Author: Anna Zaks <[email protected]>
Date: Fri Dec 21 01:19:15 2012 +0000

[analyzer] Add blocks and ObjC messages to the call graph.
This paves the road for constructing a better function dependency graph.
If we analyze a function before the functions it calls and inlines,
there is more opportunity for optimization.
Note, we add call edges to the called methods that correspond to
function definitions (declarations with bodies).

Consequently, we should remove this dead flag.
However, this arises a couple of burning questions.
- Should the `cc1` frontend still accept this flag - to keep
tools/users passing this flag directly to `cc1` (which is unsupported,
unadvertised) working.
- If we should remain backward compatible, how long?
- How can we get rid of deprecated and obsolete flags at some point?

Reviewed By: martong

Differential Revision: https://reviews.llvm.org/D126067

show more ...


# d50d9946 10-Jun-2022 Balazs Benics <[email protected]>

[analyzer] Deprecate `-analyzer-store region` flag

I'm trying to remove unused options from the `Analyses.def` file, then
merge the rest of the useful options into the `AnalyzerOptions.def`.
Then ma

[analyzer] Deprecate `-analyzer-store region` flag

I'm trying to remove unused options from the `Analyses.def` file, then
merge the rest of the useful options into the `AnalyzerOptions.def`.
Then make sure one can set these by an `-analyzer-config XXX=YYY` style
flag.
Then surface the `-analyzer-config` to the `clang` frontend;

After all of this, we can pursue the tablegen approach described
https://discourse.llvm.org/t/rfc-tablegen-clang-static-analyzer-engine-options-for-better-documentation/61488

In this patch, I'm proposing flag deprecations.
We should support deprecated analyzer flags for exactly one release. In
this case I'm planning to drop this flag in `clang-16`.

In the clang frontend, now we won't pass this option to the cc1
frontend, rather emit a warning diagnostic reminding the users about
this deprecated flag, which will be turned into error in clang-16.

Unfortunately, I had to remove all the tests referring to this flag,
causing a mass change. I've also added a test for checking this warning.

I've seen that `scan-build` also uses this flag, but I think we should
remove that part only after we turn this into a hard error.

Reviewed By: martong

Differential Revision: https://reviews.llvm.org/D126215

show more ...