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Disable santizers on constructors. #111960

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Disable santizers on constructors. #111960

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a2244f5
Disable santizers on contstructors.
DanielKristofKiss Oct 10, 2024
19230ac
Address review comments
DanielKristofKiss Oct 11, 2024
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4 changes: 4 additions & 0 deletions llvm/lib/Transforms/Utils/ModuleUtils.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -433,6 +433,10 @@ bool llvm::lowerGlobalIFuncUsersAsGlobalCtor(
FunctionType::get(Type::getVoidTy(Ctx), false), Function::InternalLinkage,
DL.getProgramAddressSpace(), "", &M);

// Disable Sanitizers as they might not yet initialized when the contructor
// runs.
NewCtor->addFnAttr(llvm::Attribute::DisableSanitizerInstrumentation);

BasicBlock *BB = BasicBlock::Create(Ctx, "", NewCtor);
IRBuilder<> InitBuilder(BB);

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3 changes: 2 additions & 1 deletion llvm/test/tools/llvm-reduce/ifunc-alias.ll
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Expand Up @@ -60,9 +60,10 @@ define float @call_alias_of_ifunc(i64 %arg) {
ret float %call
}

; CHECK-FINAL-BOTH: define internal void [[CONSTRUCTOR]]() {
; CHECK-FINAL-BOTH: define internal void [[CONSTRUCTOR]]() #[[#CONSTRUCTOR_ATTR:]] {
; CHECK-FINAL-BOTH-NEXT: %1 = call ptr @resolver()
; CHECK-FINAL-BOTH-NEXT: store ptr %1, ptr [[TABLE]], align 8
; CHECK-FINAL-BOTH-NEXT: %2 = call ptr @resolver()
; CHECK-FINAL-BOTH-NEXT: store ptr %2, ptr getelementptr inbounds ([2 x ptr], ptr [[TABLE]], i32 0, i32 1), align 8
; CHECK-FINAL-BOTH-NEXT: ret void
; CHECK-FINAL-DAG: attributes #[[#CONSTRUCTOR_ATTR]] = {{{.*}} disable_sanitizer_instrumentation {{.*}}
3 changes: 2 additions & 1 deletion llvm/test/tools/llvm-reduce/remove-ifunc-program-addrspace.ll
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Expand Up @@ -90,7 +90,7 @@ define void @load_removed() addrspace(0) {
ret void
}

; CHECK-FINAL: define internal void [[TABLE_CTOR]]() addrspace(1) {
; CHECK-FINAL: define internal void [[TABLE_CTOR]]() addrspace(1) #[[#CONSTRUCTOR_ATTR:]] {
; CHECK-FINAL-NEXT: %1 = call addrspace(1) ptr addrspace(1) @resolver1_in_1()
; CHECK-FINAL-NEXT: store ptr addrspace(1) %1, ptr addrspace(2) [[TABLE]], align 8
; CHECK-FINAL-NEXT: %2 = call addrspace(0) ptr addrspace(1) @resolver1_in_0()
Expand All @@ -105,3 +105,4 @@ define void @load_removed() addrspace(0) {
; CHECK-FINAL-NEXT: %7 = call addrspace(0) ptr addrspace(1) @resolver1_in_0()
; CHECK-FINAL-NEXT: store ptr addrspace(1) %7, ptr addrspace(2) getelementptr inbounds ([6 x ptr addrspace(1)], ptr addrspace(2) [[TABLE]], i32 0, i32 5), align 8
; CHECK-FINAL-NEXT: ret void
; CHECK-FINAL-DAG: attributes #[[#CONSTRUCTOR_ATTR]] = {{{.*}} disable_sanitizer_instrumentation {{.*}}
3 changes: 2 additions & 1 deletion llvm/test/tools/llvm-reduce/remove-ifunc.ll
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Expand Up @@ -177,7 +177,7 @@ define i32 @call_used_in_initializer(double %arg) {
ret i32 %ret
}

; CHECK-FINAL-LABEL: define internal void @1() {
; CHECK-FINAL-LABEL: define internal void @1() #[[#CONSTRUCTOR_ATTR:]] {
; CHECK-FINAL-NEXT: %1 = call ptr @resolver1()
; CHECK-FINAL-NEXT: store ptr %1, ptr @0, align 8
; CHECK-FINAL-NEXT: %2 = call ptr @resolver2()
Expand All @@ -196,3 +196,4 @@ define i32 @call_used_in_initializer(double %arg) {
; CHECK-FINAL-NEXT: store ptr %8, ptr getelementptr inbounds ([8 x ptr], ptr @0, i32 0, i32 7), align 8
; CHECK-FINAL-NEXT: ret void
; CHECK-FINAL-NEXT: }
; CHECK-FINAL-DAG: attributes #[[#CONSTRUCTOR_ATTR]] = {{{.*}} disable_sanitizer_instrumentation {{.*}}
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