Re: [PATCH 20/31] VAX: Fix predicates and constraints for EXTV/EXTZV/INSV insns

2020-11-21 Thread Jeff Law via Gcc-patches
On 11/19/20 8:35 PM, Maciej W. Rozycki wrote: > It makes no sense for insn operand predicates, as long as they accept a > register operand, to be more restrictive than the set of the associated > constraints, because expand will choose the insn based on the relevant > operand being a pseudo regi

[PATCH 20/31] VAX: Fix predicates and constraints for EXTV/EXTZV/INSV insns

2020-11-19 Thread Maciej W. Rozycki
It makes no sense for insn operand predicates, as long as they accept a register operand, to be more restrictive than the set of the associated constraints, because expand will choose the insn based on the relevant operand being a pseudo register then and reload keep it happily as a memory referenc