| Rational | LLVM.Prelude |
| Read | LLVM.Prelude |
| read | LLVM.Prelude |
| readFile | LLVM.Prelude |
| readIO | LLVM.Prelude |
| readList | LLVM.Prelude |
| readLn | LLVM.Prelude |
| ReadNone | |
| 1 (Data Constructor) | LLVM.AST.ParameterAttribute |
| 2 (Data Constructor) | LLVM.AST.FunctionAttribute, LLVM.AST.Attribute |
| ReadOnly | |
| 1 (Data Constructor) | LLVM.AST.ParameterAttribute |
| 2 (Data Constructor) | LLVM.AST.FunctionAttribute, LLVM.AST.Attribute |
| readParen | LLVM.Prelude |
| ReadS | LLVM.Prelude |
| reads | LLVM.Prelude |
| readsPrec | LLVM.Prelude |
| Real | LLVM.Prelude |
| RealFloat | LLVM.Prelude |
| RealFrac | LLVM.Prelude |
| realToFrac | LLVM.Prelude |
| recip | LLVM.Prelude |
| ReferenceType | LLVM.AST.Operand |
| Release | LLVM.AST.Instruction, LLVM.AST |
| rem | LLVM.Prelude |
| repeat | LLVM.Prelude |
| replacement | LLVM.AST.Instruction, LLVM.AST |
| replicate | LLVM.Prelude |
| replicateM | LLVM.Prelude |
| replicateM_ | LLVM.Prelude |
| RestrictType | LLVM.AST.Operand |
| resultType | LLVM.AST.Type, LLVM.AST |
| Resume | LLVM.AST.Instruction, LLVM.AST |
| Ret | LLVM.AST.Instruction, LLVM.AST |
| ret | LLVM.IRBuilder.Instruction, LLVM.IRBuilder |
| return | LLVM.Prelude |
| returnAttributes | |
| 1 (Function) | LLVM.AST.Instruction, LLVM.AST |
| 2 (Function) | LLVM.AST.Global |
| returnAttributes' | LLVM.AST.Instruction, LLVM.AST |
| returnDest | LLVM.AST.Instruction, LLVM.AST |
| Returned | LLVM.AST.ParameterAttribute, LLVM.AST.Attribute |
| returnOperand | LLVM.AST.Instruction, LLVM.AST |
| ReturnsTwice | LLVM.AST.FunctionAttribute, LLVM.AST.Attribute |
| returnType | LLVM.AST.Global |
| retVoid | LLVM.IRBuilder.Instruction, LLVM.IRBuilder |
| reverse | LLVM.Prelude |
| Right | LLVM.Prelude |
| RMWOperation | LLVM.AST.RMWOperation |
| rmwOperation | LLVM.AST.Instruction, LLVM.AST |
| round | LLVM.Prelude |
| runIRBuilder | LLVM.IRBuilder.Monad, LLVM.IRBuilder |
| runIRBuilderT | LLVM.IRBuilder.Monad, LLVM.IRBuilder |
| runModuleBuilder | LLVM.IRBuilder.Module, LLVM.IRBuilder |
| runModuleBuilderT | LLVM.IRBuilder.Module, LLVM.IRBuilder |
| RValueReference | LLVM.AST.Operand |
| RValueReferenceType | LLVM.AST.Operand |