2 Commits

Author	SHA1	Message	Date
Jakob Stoklund Olesen	d4e1cb591a	Add <imp-def> operands when reloading into physregs. ... When an instruction only writes sub-registers, it is still necessary to add an <imp-def> operand for the super-register. When reloading into a virtual register, rewriting will add the operand, but when loading directly into a virtual register, the <imp-def> operand is still necessary. llvm-svn: 152095	2012-03-06 02:48:17 +00:00
Jakob Stoklund Olesen	fd29132e44	Use <def,undef> operands when spilling NEON bundles. ... MachineOperands that define part of a virtual register must have an <undef> flag if they are not intended as read-modify-write operands. The old trick of adding an <imp-def> operand doesn't work any longer. Fixes PR12177. llvm-svn: 152008	2012-03-04 18:40:30 +00:00