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| author | Richard Sandiford <richard.sandiford@arm.com> | 2019-10-29 08:45:44 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2019-10-29 08:45:44 +0000 |
| commit | 183bfdafc6f1f98711c5400498a7268cc1441096 (patch) | |
| tree | 122a5518fc5cda98c2c8482bd9d700f89ee8cd6f /gcc/real.c | |
| parent | 50a2d3be7bf473c7590f77350fadf3471427ce09 (diff) | |
| download | gcc-183bfdafc6f1f98711c5400498a7268cc1441096.zip gcc-183bfdafc6f1f98711c5400498a7268cc1441096.tar.gz gcc-183bfdafc6f1f98711c5400498a7268cc1441096.tar.bz2 | |
[AArch64] Add FFR and FFRT registers
This patch adds the First Fault Register to the AArch64 port, as well
as a fake register known as the FFR Token or FFRT. The main ACLE
patch explains what the FFRT does and how it works.
2019-10-29 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* config/aarch64/aarch64.md (FFR_REGNUM, FFRT_REGNUM): New constants.
* config/aarch64/aarch64.h (FIRST_PSEUDO_REGISTER): Bump to
FFRT_REGNUM + 1.
(FFR_REGS, PR_AND_FFR_REGS): New register classes.
(REG_CLASS_NAMES, REG_CLASS_CONTENTS): Add entries for them.
* config/aarch64/aarch64.c (pr_or_ffr_regnum_p): New function.
(aarch64_hard_regno_nregs): Handle the new register classes.
(aarch64_hard_regno_mode_ok): Likewise.
(aarch64_regno_regclass): Likewise.
(aarch64_class_max_nregs): Likewise.
(aarch64_register_move_cost): Likewise.
(aarch64_conditional_register_usage): Don't treat FFR and FFRT
as general register_operands.
From-SVN: r277561
Diffstat (limited to 'gcc/real.c')
0 files changed, 0 insertions, 0 deletions