[llvm] [BOLT] Gadget scanner: detect signing oracles (PR #134146)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `premerge-monolithic-linux` running on `premerge-linux-1` while building `bolt` at step 7 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/153/builds/32298

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

```
Step 7 (test-build-unified-tree-check-all) failure: test (failure)
...
PASS: LLVM :: TableGen/GlobalISelCombinerEmitter/match-table-variadics.td (6179 of 99678)
PASS: Clang :: Index/complete-block-property-assignment.m (6180 of 99678)
PASS: Clang :: CodeGen/RISCV/rvv-intrinsics-autogenerated/policy/overloaded/vfdiv.c (6181 of 99678)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/chained-comparison.cpp (6182 of 99678)
PASS: Clang :: OpenMP/declare_variant_device_isa_codegen_1.c (6183 of 99678)
PASS: LLVM :: DebugInfo/X86/prototyped.ll (6184 of 99678)
PASS: Clang :: SemaHLSL/Language/TemplateOutArg.hlsl (6185 of 99678)
PASS: Clang :: Driver/mips-img-v2.cpp (6186 of 99678)
PASS: Clang Tools :: clang-tidy/checkers/readability/redundant-access-specifiers.cpp (6187 of 99678)
TIMEOUT: SanitizerCommon-tsan-x86_64-Linux :: Posix/fork_threaded.c (6188 of 99678)
******************** TEST 'SanitizerCommon-tsan-x86_64-Linux :: Posix/fork_threaded.c' FAILED ********************
Exit Code: -9
Timeout: Reached timeout of 60 seconds

Command Output (stderr):
--
/build/buildbot/premerge-monolithic-linux/build/./bin/clang  -gline-tables-only -fsanitize=thread  -m64 -funwind-tables  -I/build/buildbot/premerge-monolithic-linux/llvm-project/compiler-rt/test -ldl -O0 /build/buildbot/premerge-monolithic-linux/llvm-project/compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.c -o /build/buildbot/premerge-monolithic-linux/build/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/tsan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp && env TSAN_OPTIONS=die_after_fork=0  /build/buildbot/premerge-monolithic-linux/build/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/tsan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp # RUN: at line 1
+ /build/buildbot/premerge-monolithic-linux/build/./bin/clang -gline-tables-only -fsanitize=thread -m64 -funwind-tables -I/build/buildbot/premerge-monolithic-linux/llvm-project/compiler-rt/test -ldl -O0 /build/buildbot/premerge-monolithic-linux/llvm-project/compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.c -o /build/buildbot/premerge-monolithic-linux/build/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/tsan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp
+ env TSAN_OPTIONS=die_after_fork=0 /build/buildbot/premerge-monolithic-linux/build/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/tsan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp

--

********************
PASS: Clang :: OpenMP/nvptx_target_parallel_proc_bind_codegen.cpp (6189 of 99678)
PASS: MemorySanitizer-X86_64 :: Linux/pthread_getaffinity_np.cpp (6190 of 99678)
PASS: LLVM :: CodeGen/RISCV/rvv/vsseg-rv64.ll (6191 of 99678)
PASS: Clang :: CodeGen/lto-newpm-pipeline.c (6192 of 99678)
PASS: UBSan-ThreadSanitizer-lld-x86_64 :: TestCases/Misc/nonnull-arg.cpp (6193 of 99678)
PASS: UBSan-AddressSanitizer-x86_64 :: TestCases/TypeCheck/vptr-non-unique-typeinfo.cpp (6194 of 99678)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/tagged-union-member-count.cpp (6195 of 99678)
PASS: UBSan-ThreadSanitizer-x86_64 :: TestCases/TypeCheck/vptr-non-unique-typeinfo.cpp (6196 of 99678)
PASS: LLVM :: CodeGen/AMDGPU/llvm.amdgcn.image.a16.encode.ll (6197 of 99678)
PASS: LLVM :: TableGen/RegisterEncoder.td (6198 of 99678)
PASS: MLIR :: Dialect/Transform/test-interpreter.mlir (6199 of 99678)
PASS: Clang :: CodeGen/RISCV/rvv-intrinsics-autogenerated/policy/overloaded/vloxseg2ei8.c (6200 of 99678)
PASS: LLVM :: CodeGen/AMDGPU/fnearbyint.ll (6201 of 99678)
PASS: NSan-X86_64 :: new_delete_test.cpp (6202 of 99678)
PASS: ThreadSanitizer-x86_64 :: java_alloc.cpp (6203 of 99678)
PASS: LLVM :: tools/llvm-exegesis/RISCV/rvv/valid-sew.test (6204 of 99678)
PASS: Clang :: CodeGen/arm-mve-intrinsics/vcvt.c (6205 of 99678)
PASS: Clang :: Driver/armv8.1m.main.s (6206 of 99678)
PASS: Clang Tools :: clang-tidy/checkers/bugprone/multiple-statement-macro.cpp (6207 of 99678)
PASS: AddressSanitizer-x86_64-linux-dynamic :: TestCases/initialization-bug.cpp (6208 of 99678)
PASS: lld :: ELF/version-script.s (6209 of 99678)
PASS: AddressSanitizer-Unit :: ./Asan-x86_64-inline-Noinst-Test/11/16 (6210 of 99678)
PASS: cfi-devirt-lld-x86_64 :: cross-dso/target_out_of_bounds.cpp (6211 of 99678)
PASS: Flang :: Driver/color-diagnostics-forwarding.f90 (6212 of 99678)
PASS: lld :: COFF/arm64x-loadconfig.s (6213 of 99678)
PASS: LLVM :: TableGen/VarLenEncoderHwModes.td (6214 of 99678)

```

</details>

https://github.com/llvm/llvm-project/pull/134146