[clang] Reapply "[C++20][Modules] Implement P1857R3 Modules Dependency Discovery" (PR #173130)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-aarch64-linux-bootstrap-asan` running on `sanitizer-buildbot8` while building `clang` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/24/builds/15997

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure)
...
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld.lld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/ld.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/main.py:74: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 93604 tests, 72 workers --
Testing:  0.. 
FAIL: Clang :: CodeGenCXX/optnone-pragma-optimize-off.cpp (10257 of 93604)
******************** TEST 'Clang :: CodeGenCXX/optnone-pragma-optimize-off.cpp' FAILED ********************
Exit Code: 2

Command Output (stdout):
--
# RUN: at line 1
/home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/clang -cc1 -internal-isystem /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/lib/clang/22/include -nostdsysteminc /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/clang/test/CodeGenCXX/optnone-pragma-optimize-off.cpp -triple aarch64-unknown-linux-gnu -O1 -disable-llvm-passes -emit-llvm -o - | /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/clang/test/CodeGenCXX/optnone-pragma-optimize-off.cpp
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/clang -cc1 -internal-isystem /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/lib/clang/22/include -nostdsysteminc /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/clang/test/CodeGenCXX/optnone-pragma-optimize-off.cpp -triple aarch64-unknown-linux-gnu -O1 -disable-llvm-passes -emit-llvm -o -
# note: command had no output on stdout or stderr
# error: command failed with exit status: 1
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/clang/test/CodeGenCXX/optnone-pragma-optimize-off.cpp
# .---command stderr------------
# | FileCheck error: '<stdin>' is empty.
# | FileCheck command line:  /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/clang/test/CodeGenCXX/optnone-pragma-optimize-off.cpp
# `-----------------------------
# error: command failed with exit status: 2

--

********************
Testing:  0.. 10
FAIL: Clang :: ExtractAPI/attributed-typedef.m (13554 of 93604)
******************** TEST 'Clang :: ExtractAPI/attributed-typedef.m' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 1
rm -rf /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/tools/clang/test/ExtractAPI/Output/attributed-typedef.m.tmp
# executed command: rm -rf /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/tools/clang/test/ExtractAPI/Output/attributed-typedef.m.tmp
# note: command had no output on stdout or stderr
# RUN: at line 2
/home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/clang -cc1 -internal-isystem /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/lib/clang/22/include -nostdsysteminc -extract-api --pretty-sgf --emit-sgf-symbol-labels-for-testing    -triple arm64-apple-macosx -x objective-c-header /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/clang/test/ExtractAPI/attributed-typedef.m -o /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/tools/clang/test/ExtractAPI/Output/attributed-typedef.m.tmp/output.symbols.json
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/clang -cc1 -internal-isystem /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/lib/clang/22/include -nostdsysteminc -extract-api --pretty-sgf --emit-sgf-symbol-labels-for-testing -triple arm64-apple-macosx -x objective-c-header /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/clang/test/ExtractAPI/attributed-typedef.m -o /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/tools/clang/test/ExtractAPI/Output/attributed-typedef.m.tmp/output.symbols.json
# note: command had no output on stdout or stderr
# error: command failed with exit status: 1

--
Step 11 (stage2/asan check) failure: stage2/asan check (failure)
...
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld.lld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/ld.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/main.py:74: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 93604 tests, 72 workers --
Testing:  0.. 
FAIL: Clang :: CodeGenCXX/optnone-pragma-optimize-off.cpp (10257 of 93604)
******************** TEST 'Clang :: CodeGenCXX/optnone-pragma-optimize-off.cpp' FAILED ********************
Exit Code: 2

Command Output (stdout):
--
# RUN: at line 1
/home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/clang -cc1 -internal-isystem /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/lib/clang/22/include -nostdsysteminc /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/clang/test/CodeGenCXX/optnone-pragma-optimize-off.cpp -triple aarch64-unknown-linux-gnu -O1 -disable-llvm-passes -emit-llvm -o - | /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/clang/test/CodeGenCXX/optnone-pragma-optimize-off.cpp
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/clang -cc1 -internal-isystem /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/lib/clang/22/include -nostdsysteminc /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/clang/test/CodeGenCXX/optnone-pragma-optimize-off.cpp -triple aarch64-unknown-linux-gnu -O1 -disable-llvm-passes -emit-llvm -o -
# note: command had no output on stdout or stderr
# error: command failed with exit status: 1
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/clang/test/CodeGenCXX/optnone-pragma-optimize-off.cpp
# .---command stderr------------
# | FileCheck error: '<stdin>' is empty.
# | FileCheck command line:  /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/clang/test/CodeGenCXX/optnone-pragma-optimize-off.cpp
# `-----------------------------
# error: command failed with exit status: 2

--

********************
Testing:  0.. 10
FAIL: Clang :: ExtractAPI/attributed-typedef.m (13554 of 93604)
******************** TEST 'Clang :: ExtractAPI/attributed-typedef.m' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 1
rm -rf /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/tools/clang/test/ExtractAPI/Output/attributed-typedef.m.tmp
# executed command: rm -rf /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/tools/clang/test/ExtractAPI/Output/attributed-typedef.m.tmp
# note: command had no output on stdout or stderr
# RUN: at line 2
/home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/clang -cc1 -internal-isystem /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/lib/clang/22/include -nostdsysteminc -extract-api --pretty-sgf --emit-sgf-symbol-labels-for-testing    -triple arm64-apple-macosx -x objective-c-header /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/clang/test/ExtractAPI/attributed-typedef.m -o /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/tools/clang/test/ExtractAPI/Output/attributed-typedef.m.tmp/output.symbols.json
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/clang -cc1 -internal-isystem /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/lib/clang/22/include -nostdsysteminc -extract-api --pretty-sgf --emit-sgf-symbol-labels-for-testing -triple arm64-apple-macosx -x objective-c-header /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/clang/test/ExtractAPI/attributed-typedef.m -o /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/tools/clang/test/ExtractAPI/Output/attributed-typedef.m.tmp/output.symbols.json
# note: command had no output on stdout or stderr
# error: command failed with exit status: 1

--

```

</details>

https://github.com/llvm/llvm-project/pull/173130