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MCRegisterInfo-ize getMatchingSuperReg.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152044 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2012-03-05 19:33:24 +00:00
parent c6449b636f
commit 33ca87affb
2 changed files with 11 additions and 4 deletions
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10
include/llvm/MC/MCRegisterInfo.h
View File

@ -248,6 +248,16 @@ public:
return *(SubRegIndices + (Reg - 1) * NumSubRegIndices + Idx - 1);
}
/// getMatchingSuperReg - Return a super-register of the specified register
/// Reg so its sub-register of index SubIdx is Reg.
unsigned getMatchingSuperReg(unsigned Reg, unsigned SubIdx,
const MCRegisterClass *RC) const {
for (const unsigned *SRs = getSuperRegisters(Reg); unsigned SR = *SRs;++SRs)
if (Reg == getSubReg(SR, SubIdx) && RC->contains(SR))
return SR;
return 0;
}
/// getSubRegIndex - For a given register pair, return the sub-register index
/// if the second register is a sub-register of the first. Return zero
/// otherwise.

5
include/llvm/Target/TargetRegisterInfo.h
View File

@ -387,10 +387,7 @@ public:
/// Reg so its sub-register of index SubIdx is Reg.
unsigned getMatchingSuperReg(unsigned Reg, unsigned SubIdx,
const TargetRegisterClass *RC) const {
for (const uint16_t *SRs = getSuperRegisters(Reg); unsigned SR = *SRs;++SRs)
if (Reg == getSubReg(SR, SubIdx) && RC->contains(SR))
return SR;
return 0;
return MCRegisterInfo::getMatchingSuperReg(Reg, SubIdx, RC->MC);
}
/// canCombineSubRegIndices - Given a register class and a list of