459     if (op_inst->opcode() == SpvOpFAdd || op_inst->opcode() == SpvOpFSub ||  in MergeNegateAddSubArithmetic()
484         inst->SetOpcode(HasFloatingPoint(type) ? SpvOpFSub : SpvOpISub);  in MergeNegateAddSubArithmetic()
548     case SpvOpFSub:  in PerformFloatingPointOperation()
1029       inst->SetOpcode(HasFloatingPoint(type) ? SpvOpFSub : SpvOpISub);  in MergeAddNegateArithmetic()
1048     assert(inst->opcode() == SpvOpFSub || inst->opcode() == SpvOpISub);  in MergeSubNegateArithmetic()
1159     if (other_inst->opcode() == SpvOpFSub ||  in MergeAddSubArithmetic()
1202     assert(inst->opcode() == SpvOpFSub || inst->opcode() == SpvOpISub);  in MergeSubAddArithmetic()
1267     assert(inst->opcode() == SpvOpFSub || inst->opcode() == SpvOpISub);  in MergeSubSubArithmetic()
1283     if (other_inst->opcode() == SpvOpFSub ||  in MergeSubSubArithmetic()
1336   if (sub_inst->opcode() != SpvOpFSub && sub_inst->opcode() != SpvOpISub)  in MergeGenericAddendSub()
1338   if (sub_inst->opcode() == SpvOpFSub &&  in MergeGenericAddendSub()
1539   assert(sub->opcode() == SpvOpFSub);  in MergeMulSubArithmetic()
2387     assert(inst->opcode() == SpvOpFSub && "Wrong opcode.  Should be OpFSub.");  in RedundantFSub()
2907   rules_[SpvOpFSub].push_back(RedundantFSub());  in AddFoldingRules()
2908   rules_[SpvOpFSub].push_back(MergeSubNegateArithmetic());  in AddFoldingRules()
2909   rules_[SpvOpFSub].push_back(MergeSubAddArithmetic());  in AddFoldingRules()
2910   rules_[SpvOpFSub].push_back(MergeSubSubArithmetic());  in AddFoldingRules()
2911   rules_[SpvOpFSub].push_back(MergeMulSubArithmetic);  in AddFoldingRules()