diff options
| -rw-r--r-- | include/llvm/Target/MRegisterInfo.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/llvm/Target/MRegisterInfo.h b/include/llvm/Target/MRegisterInfo.h index 1e118c1505..2db4f2031b 100644 --- a/include/llvm/Target/MRegisterInfo.h +++ b/include/llvm/Target/MRegisterInfo.h @@ -321,6 +321,22 @@ public: return areAliases(regA, regB); } + /// isSubRegister - Returns true if regB is a sub-register of regA. + /// + bool isSubRegister(unsigned regA, unsigned regB) const { + for (const unsigned *SR = getSubRegisters(regA); *SR; ++SR) + if (*SR == regB) return true; + return false; + } + + /// isSuperRegister - Returns true if regB is a super-register of regA. + /// + bool isSuperRegister(unsigned regA, unsigned regB) const { + for (const unsigned *SR = getSuperRegisters(regA); *SR; ++SR) + if (*SR == regB) return true; + return false; + } + /// getCalleeSavedRegs - Return a null-terminated list of all of the /// callee saved registers on this target. The register should be in the /// order of desired callee-save stack frame offset. The first register is |