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authorChristophe Lyon <christophe.lyon@arm.com>2021-10-13 09:16:09 +0000
committerChristophe Lyon <christophe.lyon@foss.st.com>2022-02-22 15:55:06 +0000
commitbf3e36fbf13f0db44a79988036cb9c042288841a (patch)
tree987b7c7f90f1095b5506b29beeafa296cc5250d4 /move-if-change
parent7b1cce9273ce49fee5f5ebafb22107b97e3e7741 (diff)
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arm: Add GENERAL_AND_VPR_REGS regclass
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. CLASS_MAX_NREGS and arm_hard_regno_nregs need adjustment to avoid a regression in gcc.dg/stack-usage-1.c when compiled with -mthumb -mfloat-abi=hard -march=armv8.1-m.main+mve.fp+fp.dp. Most of the work of this patch series was carried out while I was working at STMicroelectronics as a Linaro assignee. 2022-02-22 Christophe Lyon <christophe.lyon@arm.com> gcc/ * config/arm/arm.h (reg_class): Add GENERAL_AND_VPR_REGS. (REG_CLASS_NAMES): Likewise. (REG_CLASS_CONTENTS): Likewise. (CLASS_MAX_NREGS): Handle VPR. * config/arm/arm.cc (arm_hard_regno_nregs): Handle VPR.
Diffstat (limited to 'move-if-change')
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