https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71307
--- Comment #7 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> --- Author: rsandifo Date: Mon Oct 2 08:11:07 2017 New Revision: 253337 URL: https://gcc.gnu.org/viewcvs?rev=253337&root=gcc&view=rev Log: [AArch64] PR71307: Define union class of POINTER+FP ALL_REGS doesn't function as a union class of POINTER_REGS and FP_REGS since it includes the CC register as well. REGNO_REG_CLASS (CC_REGNUM) is NO_REGS, but of course NO_REGS rightly doesn't include CC_REGNUM. Adding a union class for POINTER+FP allows the RA to use it as the preferred or alternative class of a pseudo. It also works as a union class of GENERAL+FP for modes that aren't allowed in SP. This is also needed for the SVE port, which adds predicate registers to the mix. 2017-09-15 Richard Sandiford <richard.sandif...@linaro.org> Alan Hayward <alan.hayw...@arm.com> David Sherwood <david.sherw...@arm.com> gcc/ PR target/71307 * config/aarch64/aarch64.h (POINTER_AND_FP_REGS): New reg class. (REG_CLASS_NAMES, REG_CLASS_CONTENTS): Update accordingly. * config/aarch64/aarch64.c (aarch64_class_max_nregs): Handle POINTER_AND_FP_REGS. gcc/testsuite/ PR target/71307 * gcc.target/aarch64/vect_copy_lane_1.c: Remove XFAIL. Modified: trunk/gcc/ChangeLog trunk/gcc/config/aarch64/aarch64.c trunk/gcc/config/aarch64/aarch64.h trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.target/aarch64/vect_copy_lane_1.c
