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isSubRegOf() is a dup of isSubRegister.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43249 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-10-23 06:51:50 +00:00
parent 152b7e1874
commit e11fb34381
2 changed files with 1 additions and 12 deletions
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11
include/llvm/Target/MRegisterInfo.h
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@ -375,17 +375,6 @@ public:
return get(RegNo).SuperRegs;
}
/// isSubRegOf - Predicate which returns true if RegA is a sub-register of
/// RegB. Returns false otherwise.
///
bool isSubRegOf(unsigned RegA, unsigned RegB) const {
const TargetRegisterDesc &RD = (*this)[RegA];
for (const unsigned *reg = RD.SuperRegs; *reg != 0; ++reg)
if (*reg == RegB)
return true;
return false;
}
/// getName - Return the symbolic target specific name for the specified
/// physical register.
const char *getName(unsigned RegNo) const {

2
lib/CodeGen/LowerSubregs.cpp
View File

@ -146,7 +146,7 @@ bool LowerSubregsInstructionPass::LowerInsert(MachineInstr *MI) {
// of the destination, we copy the subreg into the source
// However, this is only safe if the insert instruction is the kill
// of the source register
bool revCopyOrder = MRI.isSubRegOf(InsReg, DstReg);
bool revCopyOrder = MRI.isSubRegister(DstReg, InsReg);
if (revCopyOrder && InsReg != DstSubReg) {
if (MI->getOperand(1).isKill()) {
DstSubReg = MRI.getSubReg(SrcReg, SubIdx);