[llvm] [IPO] Avoid repeated hash lookups (NFC) (PR #108796)

Mon Sep 16 07:17:49 PDT 2024

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `bolt-x86_64-ubuntu-nfc` running on `bolt-worker` while building `llvm` at step 8 "test-build-bolt-check-bolt".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/92/builds/6446

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

```
Step 8 (test-build-bolt-check-bolt) failure: test (failure)
0.012 [904/18/1] Building CXX object tools/llvm-config/CMakeFiles/llvm-config.dir/llvm-config.cpp.o
0.036 [903/18/2] Performing build step for 'bolt_rt'
ninja: no work to do.
0.051 [902/18/3] Generating VCSVersion.inc
0.108 [899/18/4] No install step for 'bolt_rt'
0.146 [898/18/5] Linking CXX executable bin/llvm-config
0.156 [897/18/6] Completed 'bolt_rt'
1.316 [896/18/7] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangSyntaxEmitter.cpp.o
FAILED: tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangSyntaxEmitter.cpp.o 
ccache /usr/bin/c++ -DGTEST_HAS_RTTI=0 -DLLVM_BUILD_STATIC -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/build/tools/clang/utils/TableGen -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/clang/utils/TableGen -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/clang/include -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/build/tools/clang/include -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/build/include -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -fno-lifetime-dse -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual -fno-strict-aliasing -O3 -DNDEBUG  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -std=c++17 -MD -MT tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangSyntaxEmitter.cpp.o -MF tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangSyntaxEmitter.cpp.o.d -o tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangSyntaxEmitter.cpp.o -c /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/clang/utils/TableGen/ClangSyntaxEmitter.cpp
/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/clang/utils/TableGen/ClangSyntaxEmitter.cpp:63:19: error: declaration of ‘const llvm::Record* {anonymous}::Hierarchy::NodeType::Record’ changes meaning of ‘Record’ [-fpermissive]
   63 |     const Record *Record = nullptr;
      |                   ^~~~~~
In file included from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/clang/utils/TableGen/ClangSyntaxEmitter.cpp:33:
/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/TableGen/Record.h:1627:7: note: ‘Record’ declared here as ‘class llvm::Record’
 1627 | class Record {
      |       ^~~~~~
1.500 [896/17/8] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ASTTableGen.cpp.o
1.819 [896/16/9] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangOpcodesEmitter.cpp.o
1.901 [896/15/10] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangBuiltinsEmitter.cpp.o
1.992 [896/14/11] Linking CXX executable tools/bolt/unittests/Profile/ProfileTests
2.030 [896/13/12] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangASTNodesEmitter.cpp.o
2.199 [896/12/13] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangSACheckersEmitter.cpp.o
2.408 [896/11/14] Linking CXX executable bin/llvm-bat-dump
2.648 [896/10/15] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangASTPropertiesEmitter.cpp.o
2.651 [896/9/16] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangOptionDocEmitter.cpp.o
3.151 [896/8/17] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangOpenCLBuiltinEmitter.cpp.o
3.741 [896/7/18] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/SveEmitter.cpp.o
3.936 [896/6/19] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangDiagnosticsEmitter.cpp.o
4.959 [896/5/20] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/NeonEmitter.cpp.o
4.991 [896/4/21] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/MveEmitter.cpp.o
5.359 [896/3/22] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/RISCVVEmitter.cpp.o
5.925 [896/2/23] Linking CXX executable bin/lld
6.991 [896/1/24] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangAttrEmitter.cpp.o
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/108796