static void tcg_out_movi_int(TCGContext *s, TCGType type, TCGReg ret, tcg_target_long arg, bool in_prologue) { intptr_t tb_diff; tcg_target_long tmp; int shift; tcg_debug_assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32); if (TCG_TARGET_REG_BITS == 64 && type == TCG_TYPE_I32) { arg = (int32_t)arg; } /* Load 16-bit immediates with one insn. */ if (tcg_out_movi_one(s, ret, arg)) { return; } /* Load addresses within the TB with one insn. */ tb_diff = arg - (intptr_t)s->code_gen_ptr; if (!in_prologue && USE_REG_TB && tb_diff == (int16_t)tb_diff) { tcg_out32(s, ADDI | TAI(ret, TCG_REG_TB, tb_diff)); return; } /* Load 32-bit immediates with two insns. Note that we've already eliminated bare ADDIS, so we know both insns are required. */ if (TCG_TARGET_REG_BITS == 32 || arg == (int32_t)arg) { tcg_out32(s, ADDIS | TAI(ret, 0, arg >> 16)); tcg_out32(s, ORI | SAI(ret, ret, arg)); return; } if (arg == (uint32_t)arg && !(arg & 0x8000)) { tcg_out32(s, ADDI | TAI(ret, 0, arg)); tcg_out32(s, ORIS | SAI(ret, ret, arg >> 16)); return; } /* Load masked 16-bit value. */ if (arg > 0 && (arg & 0x8000)) { tmp = arg | 0x7fff; if ((tmp & (tmp + 1)) == 0) { int mb = clz64(tmp + 1) + 1; tcg_out32(s, ADDI | TAI(ret, 0, arg)); tcg_out_rld(s, RLDICL, ret, ret, 0, mb); return; } } /* Load common masks with 2 insns. */ shift = ctz64(arg); tmp = arg >> shift; if (tmp == (int16_t)tmp) { tcg_out32(s, ADDI | TAI(ret, 0, tmp)); tcg_out_shli64(s, ret, ret, shift); return; } shift = clz64(arg); if (tcg_out_movi_one(s, ret, arg << shift)) { tcg_out_shri64(s, ret, ret, shift); return; } /* Load addresses within 2GB of TB with 2 (or rarely 3) insns. */ if (!in_prologue && USE_REG_TB && tb_diff == (int32_t)tb_diff) { tcg_out_mem_long(s, ADDI, ADD, ret, TCG_REG_TB, tb_diff); return; } /* Use the constant pool, if possible. */ if (!in_prologue && USE_REG_TB) { new_pool_label(s, arg, R_PPC_ADDR16, s->code_ptr, -(intptr_t)s->code_gen_ptr); tcg_out32(s, LD | TAI(ret, TCG_REG_TB, 0)); return; } tmp = arg >> 31 >> 1; tcg_out_movi(s, TCG_TYPE_I32, ret, tmp); if (tmp) { tcg_out_shli64(s, ret, ret, 32); } if (arg & 0xffff0000) { tcg_out32(s, ORIS | SAI(ret, ret, arg >> 16)); } if (arg & 0xffff) { tcg_out32(s, ORI | SAI(ret, ret, arg)); } }