[llvm] [AMDGPU] Examine instructions in pending queues during scheduling (PR #147653)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-aarch64-linux-fuzzer` running on `sanitizer-buildbot11` while building `llvm` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/159/builds/33233

<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)
...
[3/145] Generating VCSRevision.h
[4/66] Linking CXX shared module unittests/Support/DynamicLibrary/SecondLib.so
[5/66] Linking CXX shared module unittests/Analysis/InlineOrderPlugin.so
[6/66] Generating VCSVersion.inc
[7/64] Linking CXX shared module unittests/Support/DynamicLibrary/PipSqueak.so
[8/64] Linking CXX shared module unittests/Passes/Plugins/DoublerPlugin.so
[9/64] Linking CXX shared module unittests/Passes/Plugins/TestPlugin.so
[10/64] Linking CXX shared module unittests/Analysis/InlineAdvisorPlugin.so
[11/64] Linking CXX executable bin/llvm-config
[12/64] Building CXX object lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/GCNSchedStrategy.cpp.o
FAILED: lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/GCNSchedStrategy.cpp.o 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes CCACHE_SLOPPINESS=pch_defines,time_macros /usr/bin/ccache /usr/bin/clang++ -DGTEST_HAS_RTTI=0 -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/b/sanitizer-aarch64-linux-fuzzer/build/llvm_build0/lib/Target/AMDGPU -I/home/b/sanitizer-aarch64-linux-fuzzer/build/llvm-project/llvm/lib/Target/AMDGPU -I/home/b/sanitizer-aarch64-linux-fuzzer/build/llvm_build0/include -I/home/b/sanitizer-aarch64-linux-fuzzer/build/llvm-project/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -std=c++17 -fvisibility=hidden  -fno-exceptions -funwind-tables -fno-rtti -MD -MT lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/GCNSchedStrategy.cpp.o -MF lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/GCNSchedStrategy.cpp.o.d -o lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/GCNSchedStrategy.cpp.o -c /home/b/sanitizer-aarch64-linux-fuzzer/build/llvm-project/llvm/lib/Target/AMDGPU/GCNSchedStrategy.cpp
/home/b/sanitizer-aarch64-linux-fuzzer/build/llvm-project/llvm/lib/Target/AMDGPU/GCNSchedStrategy.cpp:362:24: error: out-of-line definition of 'printCandidateDecision' does not match any declaration in 'llvm::GCNSchedStrategy'
  362 | void GCNSchedStrategy::printCandidateDecision(const SchedCandidate &Current,
      |                        ^~~~~~~~~~~~~~~~~~~~~~
/home/b/sanitizer-aarch64-linux-fuzzer/build/llvm-project/llvm/lib/Target/AMDGPU/GCNSchedStrategy.h:45:7: note: GCNSchedStrategy defined here
   45 | class GCNSchedStrategy : public GenericScheduler {
      |       ^~~~~~~~~~~~~~~~
1 error generated.
[13/64] Building CXX object lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/GCNIterativeScheduler.cpp.o
[14/64] Building CXX object lib/Target/AArch64/CMakeFiles/LLVMAArch64CodeGen.dir/AArch64InstrInfo.cpp.o
[15/64] Building CXX object lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/AMDGPUTargetMachine.cpp.o
[16/64] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVISelLowering.cpp.o
ninja: build stopped: subcommand failed.
Step 7 (stage1 build all) failure: stage1 build all (failure)
...
[3/145] Generating VCSRevision.h
[4/66] Linking CXX shared module unittests/Support/DynamicLibrary/SecondLib.so
[5/66] Linking CXX shared module unittests/Analysis/InlineOrderPlugin.so
[6/66] Generating VCSVersion.inc
[7/64] Linking CXX shared module unittests/Support/DynamicLibrary/PipSqueak.so
[8/64] Linking CXX shared module unittests/Passes/Plugins/DoublerPlugin.so
[9/64] Linking CXX shared module unittests/Passes/Plugins/TestPlugin.so
[10/64] Linking CXX shared module unittests/Analysis/InlineAdvisorPlugin.so
[11/64] Linking CXX executable bin/llvm-config
[12/64] Building CXX object lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/GCNSchedStrategy.cpp.o
FAILED: lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/GCNSchedStrategy.cpp.o 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes CCACHE_SLOPPINESS=pch_defines,time_macros /usr/bin/ccache /usr/bin/clang++ -DGTEST_HAS_RTTI=0 -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/b/sanitizer-aarch64-linux-fuzzer/build/llvm_build0/lib/Target/AMDGPU -I/home/b/sanitizer-aarch64-linux-fuzzer/build/llvm-project/llvm/lib/Target/AMDGPU -I/home/b/sanitizer-aarch64-linux-fuzzer/build/llvm_build0/include -I/home/b/sanitizer-aarch64-linux-fuzzer/build/llvm-project/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -std=c++17 -fvisibility=hidden  -fno-exceptions -funwind-tables -fno-rtti -MD -MT lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/GCNSchedStrategy.cpp.o -MF lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/GCNSchedStrategy.cpp.o.d -o lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/GCNSchedStrategy.cpp.o -c /home/b/sanitizer-aarch64-linux-fuzzer/build/llvm-project/llvm/lib/Target/AMDGPU/GCNSchedStrategy.cpp
/home/b/sanitizer-aarch64-linux-fuzzer/build/llvm-project/llvm/lib/Target/AMDGPU/GCNSchedStrategy.cpp:362:24: error: out-of-line definition of 'printCandidateDecision' does not match any declaration in 'llvm::GCNSchedStrategy'
  362 | void GCNSchedStrategy::printCandidateDecision(const SchedCandidate &Current,
      |                        ^~~~~~~~~~~~~~~~~~~~~~
/home/b/sanitizer-aarch64-linux-fuzzer/build/llvm-project/llvm/lib/Target/AMDGPU/GCNSchedStrategy.h:45:7: note: GCNSchedStrategy defined here
   45 | class GCNSchedStrategy : public GenericScheduler {
      |       ^~~~~~~~~~~~~~~~
1 error generated.
[13/64] Building CXX object lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/GCNIterativeScheduler.cpp.o
[14/64] Building CXX object lib/Target/AArch64/CMakeFiles/LLVMAArch64CodeGen.dir/AArch64InstrInfo.cpp.o
[15/64] Building CXX object lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/AMDGPUTargetMachine.cpp.o
[16/64] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVISelLowering.cpp.o
ninja: build stopped: subcommand failed.
program finished with exit code 1
elapsedTime=42.873133

```

</details>

https://github.com/llvm/llvm-project/pull/147653