[clang] 9faab43 - [docs] Mention that we are in the process of removing the legacy PM for the optimization pipeline

[Arthur Eubanks via cfe-commits]

Author: Arthur Eubanks
Date: 2022-04-12T10:47:58-07:00
New Revision: 9faab435a35720fd7c6b3aeafe22c5dfb29f36e0

URL: https://github.com/llvm/llvm-project/commit/9faab435a35720fd7c6b3aeafe22c5dfb29f36e0
DIFF: https://github.com/llvm/llvm-project/commit/9faab435a35720fd7c6b3aeafe22c5dfb29f36e0.diff

LOG: [docs] Mention that we are in the process of removing the legacy PM for the optimization pipeline

And remove references to flags to turn it off.

Reviewed By: nikic, MaskRay

Differential Revision: https://reviews.llvm.org/D123547

Added: 
    

Modified: 
    clang/include/clang/Driver/Options.td
    llvm/docs/NewPassManager.rst

Removed: 
    


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diff  --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
index 27957b10925f7..322cc800f7525 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -1937,8 +1937,8 @@ def fexperimental_isel : Flag<["-"], "fexperimental-isel">, Group<f_clang_Group>
   Alias<fglobal_isel>;
 defm legacy_pass_manager : BoolOption<"f", "legacy-pass-manager",
   CodeGenOpts<"LegacyPassManager">, DefaultFalse,
-  PosFlag<SetTrue, [], "Use the legacy pass manager in LLVM (deprecated, to be removed in a future release)">,
-  NegFlag<SetFalse, [], "Use the new pass manager in LLVM">,
+  PosFlag<SetTrue>,
+  NegFlag<SetFalse>,
   BothFlags<[CC1Option]>>, Group<f_clang_Group>;
 def fexperimental_new_pass_manager : Flag<["-"], "fexperimental-new-pass-manager">,
   Group<f_clang_Group>, Flags<[CC1Option]>, Alias<fno_legacy_pass_manager>;

diff  --git a/llvm/docs/NewPassManager.rst b/llvm/docs/NewPassManager.rst
index 58d5a26d84505..fd5536c2fd1cb 100644
--- a/llvm/docs/NewPassManager.rst
+++ b/llvm/docs/NewPassManager.rst
@@ -480,12 +480,9 @@ optimization pipeline (aka the middle-end) works with both the legacy PM and
 the new PM, whereas the backend target-dependent code generation only works
 with the legacy PM.
 
-For the optimization pipeline, the new PM is the default PM. The legacy PM is
-available for the optimization pipeline by setting various compiler/linker
-flags, e.g. ``-flegacy-pass-manager`` for ``clang``.
-
-There will be efforts to deprecate and remove the legacy PM for the
-optimization pipeline in the future.
+For the optimization pipeline, the new PM is the default PM. Using the legacy PM
+for the optimization pipeline is deprecated and there are ongoing efforts to
+remove its usage.
 
 Some IR passes are considered part of the backend codegen pipeline even if
 they are LLVM IR passes (whereas all MIR passes are codegen passes). This