diff options
| -rw-r--r-- | include/llvm/Target/TargetLowering.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h index f6eb5a24e5..7d1f3e00b8 100644 --- a/include/llvm/Target/TargetLowering.h +++ b/include/llvm/Target/TargetLowering.h @@ -687,8 +687,14 @@ public: /// getRegForInlineAsmConstraint - Given a physical register constraint (e.g. /// {edx}), return the register number and the register class for the - /// register. This should only be used for C_Register constraints. On error, - /// this returns a register number of 0. + /// register. + /// + /// Given a register class constraint, like 'r', if this corresponds directly + /// to an LLVM register class, return a register of 0 and the register class + /// pointer. + /// + /// This should only be used for C_Register constraints. On error, + /// this returns a register number of 0 and a null register class pointer.. virtual std::pair<unsigned, const TargetRegisterClass*> getRegForInlineAsmConstraint(const std::string &Constraint, MVT::ValueType VT) const; |