diff --git a/src/compiler/ppc/instruction-selector-ppc.cc b/src/compiler/ppc/instruction-selector-ppc.cc
index c943428c08..8bb712776e 100644
--- a/src/compiler/ppc/instruction-selector-ppc.cc
+++ b/src/compiler/ppc/instruction-selector-ppc.cc
@@ -2285,6 +2285,10 @@ void InstructionSelector::VisitF32x4Max(Node* node) { UNIMPLEMENTED(); }
 
 void InstructionSelector::VisitS128Select(Node* node) { UNIMPLEMENTED(); }
 
+void InstructionSelector::VisitF32x4Neg(Node* node) { UNIMPLEMENTED(); }
+
+void InstructionSelector::VisitF32x4Abs(Node* node) { UNIMPLEMENTED(); }
+
 // static
 MachineOperatorBuilder::Flags
 InstructionSelector::SupportedMachineOperatorFlags() {
diff --git a/src/compiler/s390/instruction-selector-s390.cc b/src/compiler/s390/instruction-selector-s390.cc
index 2a976c5f5f..d20b9637c7 100644
--- a/src/compiler/s390/instruction-selector-s390.cc
+++ b/src/compiler/s390/instruction-selector-s390.cc
@@ -2604,6 +2604,10 @@ void InstructionSelector::VisitF32x4Max(Node* node) { UNIMPLEMENTED(); }
 
 void InstructionSelector::VisitS128Select(Node* node) { UNIMPLEMENTED(); }
 
+void InstructionSelector::VisitF32x4Neg(Node* node) { UNIMPLEMENTED(); }
+
+void InstructionSelector::VisitF32x4Abs(Node* node) { UNIMPLEMENTED(); }
+
 // static
 MachineOperatorBuilder::Flags
 InstructionSelector::SupportedMachineOperatorFlags() {