Delete unused PoisonChecking utility pass

This was introduced ~5yrs ago (by me), and has never really gotten any adoption. By now, it's significantly out of sync with new/changed poison propoagation rules. The idea is still reasonable, but the imagined use case is largely covered by alive2 these days anyways.
intel · Dec 19, 2024 · 0517772 · 0517772
1 parent 5f096fd
commit 0517772
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diff --git a/llvm/include/llvm/Transforms/Instrumentation/PoisonChecking.h b/llvm/include/llvm/Transforms/Instrumentation/PoisonChecking.h
diff --git a/llvm/lib/Passes/PassBuilder.cpp b/llvm/lib/Passes/PassBuilder.cpp
@@ -220,7 +220,6 @@
 #include "llvm/Transforms/Instrumentation/PGOCtxProfLowering.h"
 #include "llvm/Transforms/Instrumentation/PGOForceFunctionAttrs.h"
 #include "llvm/Transforms/Instrumentation/PGOInstrumentation.h"
-#include "llvm/Transforms/Instrumentation/PoisonChecking.h"
 #include "llvm/Transforms/Instrumentation/RealtimeSanitizer.h"
 #include "llvm/Transforms/Instrumentation/SanitizerBinaryMetadata.h"
 #include "llvm/Transforms/Instrumentation/SanitizerCoverage.h"

diff --git a/llvm/lib/Passes/PassRegistry.def b/llvm/lib/Passes/PassRegistry.def
@@ -115,7 +115,6 @@ MODULE_PASS("partial-inliner", PartialInlinerPass())
 MODULE_PASS("pgo-icall-prom", PGOIndirectCallPromotion())
 MODULE_PASS("pgo-instr-gen", PGOInstrumentationGen())
 MODULE_PASS("pgo-instr-use", PGOInstrumentationUse())
-MODULE_PASS("poison-checking", PoisonCheckingPass())
 MODULE_PASS("pre-isel-intrinsic-lowering", PreISelIntrinsicLoweringPass(TM))
 MODULE_PASS("print", PrintModulePass(errs()))
 MODULE_PASS("print-callgraph", CallGraphPrinterPass(errs()))

diff --git a/llvm/lib/Transforms/Instrumentation/CMakeLists.txt b/llvm/lib/Transforms/Instrumentation/CMakeLists.txt
@@ -19,7 +19,6 @@ add_llvm_component_library(LLVMInstrumentation
   PGOForceFunctionAttrs.cpp
   PGOInstrumentation.cpp
   PGOMemOPSizeOpt.cpp
-  PoisonChecking.cpp
   SanitizerCoverage.cpp
   SanitizerBinaryMetadata.cpp
   ValueProfileCollector.cpp