On 2/25/22 12:38, Robin Dapp wrote: > Hi, > > the IF_THEN_ELSE detection currently prevents us from properly costing > register-register moves which causes the lower-subreg pass to assume > that a VR-VR move is as expensive as two GPR-GPR moves. > > This patch adds handling for SETs containing REGs as well as MEMs and is > inspired by the aarch64 implementation. > > Bootstrapped and regtested on z900 up to z15. Is it OK? > > Regards > Robin > > -- > > gcc/ChangeLog: > > * config/s390/s390.cc (s390_address_cost): Declare. > (s390_hard_regno_nregs): Declare. > (s390_rtx_costs): Add handling for REG and MEM in SET. > > gcc/testsuite/ChangeLog: > > * gcc.target/s390/vector/vec-sum-across-no-lower-subreg-1.c: New > test.
Ok. Thanks Andreas
