search for: postregalloc

...;fadd' nodes and it will be translated to 'addss' in assembly. At this stage, the MOVSS/INSERTPS is still required since the ADDSS alone would not be equivalent to the hardware 'movss' instruction. I then started investigating the possibility of adding a pass that runs at 'postRegAlloc' stage. Before RegAlloc it may not be safe to remove the redundant MOVSSrr because of the TwoAddressInstruction Pass; this may decide to commute the operands of the ADDSS/MULSS. It is possible to write a pass that scans through each basic block in a function looking for opportunities to fold...

...e translated to 'addss' in assembly. > > At this stage, the MOVSS/INSERTPS is still required since the ADDSS > alone would not be equivalent to the hardware 'movss' instruction. > > I then started investigating the possibility of adding a pass that > runs at 'postRegAlloc' stage. > > Before RegAlloc it may not be safe to remove the redundant MOVSSrr > because of the TwoAddressInstruction Pass; this may decide to commute > the operands of the ADDSS/MULSS. > > It is possible to write a pass that scans through each basic block in > a function...