llvm.org GIT mirror llvm / aaf6cbd
Switch the NEON register class from QPR to DPair. The already allocatable DPair superclass contains odd-even D register pair in addition to the even-odd pairs in the QPR register class. There is no reason to constrain the set of D register pairs that can be used for NEON values. Any NEON instructions that require a Q register will automatically constrain the register class to QPR. The allocation order for DPair begins with the QPR registers, so register allocation is unlikely to change much. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199186 91177308-0d34-0410-b5e6-96231b3b80d8 Jakob Stoklund Olesen 6 years ago
1 changed file(s) with 1 addition(s) and 1 deletion(s). Raw diff Collapse all Expand all
155155 }
157157 void ARMTargetLowering::addQRTypeForNEON(MVT VT) {
158 addRegisterClass(VT, &ARM::QPRRegClass);
158 addRegisterClass(VT, &ARM::DPairRegClass);
159159 addTypeForNEON(VT, MVT::v2f64, MVT::v4i32);
160160 }