diff options
Diffstat (limited to 'gcc/config/arm/arm.c')
| -rw-r--r-- | gcc/config/arm/arm.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index f59c1fcd3f9..85d1e8cb82b 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -12859,6 +12859,57 @@ output_move_neon (rtx *operands) return ""; } +/* Compute and return the length of neon_mov<mode>, where <mode> is + one of VSTRUCT modes: EI, OI, CI or XI. */ +int +arm_attr_length_move_neon (rtx insn) +{ + rtx reg, mem, addr; + int regno, load; + enum machine_mode mode; + + extract_insn_cached (insn); + + if (REG_P (recog_data.operand[0]) && REG_P (recog_data.operand[1])) + { + mode = GET_MODE (recog_data.operand[0]); + switch (mode) + { + case EImode: + case OImode: + return 8; + case CImode: + return 12; + case XImode: + return 16; + default: + gcc_unreachable (); + } + } + + load = REG_P (recog_data.operand[0]); + reg = recog_data.operand[!load]; + mem = recog_data.operand[load]; + + gcc_assert (MEM_P (mem)); + + mode = GET_MODE (reg); + regno = REGNO (reg); + addr = XEXP (mem, 0); + + /* Strip off const from addresses like (const (plus (...))). */ + if (GET_CODE (addr) == CONST && GET_CODE (XEXP (addr, 0)) == PLUS) + addr = XEXP (addr, 0); + + if (GET_CODE (addr) == LABEL_REF || GET_CODE (addr) == PLUS) + { + int insns = HARD_REGNO_NREGS (REGNO (reg), mode) / 2; + return insns * 4; + } + else + return 4; +} + /* Output an ADD r, s, #n where n may be too big for one instruction. If adding zero to one register, output nothing. */ const char * |