At some point during the development of this patch series, it appeared that in some cases the register allocator wants “VPR or general” rather than “VPR or general or FP” (which is the same thing as ALL_REGS). The series does not seem to require this anymore, but it seems to be a good thing to do anyway, to give the register allocator more freedom.
2021-10-13 Christophe Lyon <christophe.l...@foss.st.com> gcc/ * config/arm/arm.h (reg_class): Add GENERAL_AND_VPR_REGS. (REG_CLASS_NAMES): Likewise. (REG_CLASS_CONTENTS): Likewise. diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h index 015299c1534..eae1b1cd0fb 100644 --- a/gcc/config/arm/arm.h +++ b/gcc/config/arm/arm.h @@ -1286,6 +1286,7 @@ enum reg_class SFP_REG, AFP_REG, VPR_REG, + GENERAL_AND_VPR_REGS, ALL_REGS, LIM_REG_CLASSES }; @@ -1315,6 +1316,7 @@ enum reg_class "SFP_REG", \ "AFP_REG", \ "VPR_REG", \ + "GENERAL_AND_VPR_REGS", \ "ALL_REGS" \ } @@ -1343,6 +1345,7 @@ enum reg_class { 0x00000000, 0x00000000, 0x00000000, 0x00000040 }, /* SFP_REG */ \ { 0x00000000, 0x00000000, 0x00000000, 0x00000080 }, /* AFP_REG */ \ { 0x00000000, 0x00000000, 0x00000000, 0x00000400 }, /* VPR_REG. */ \ + { 0x00005FFF, 0x00000000, 0x00000000, 0x00000400 }, /* GENERAL_AND_VPR_REGS. */ \ { 0xFFFF7FFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x0000000F } /* ALL_REGS. */ \ } -- 2.25.1